Instruction manual VibroMetra 1.8

Instruction manual VibroMetra 1.8
Instruction Manual
PC Vibration
Measuring System
VibroMetra 1.8
Metra Mess- und Frequenztechnik in Radebeul e.K.
Meissner Str. 58 - D-01445 Radebeul
Tel. +49-351 836 2191 Fax +49-351 836 2940
Email: Info@MMF.de Internet: www.MMF.de
VibroMetra Manual
Content
VibroMetra 1.8.0 ...................................................................................................................8
Sensor Interface ...................................................................................................................9
Driver installation ..........................................................................................................11
Software Instruments ..........................................................................................................12
VM-METER (+) .............................................................................................................13
Display area ............................................................................................................14
Setup area ..............................................................................................................16
Overall values ...................................................................................................18
Order values .....................................................................................................20
Speed values ....................................................................................................22
Acoustic values .................................................................................................24
VM-PLOT (+) ................................................................................................................26
Display area ............................................................................................................27
Setup area ..............................................................................................................30
Signal ...............................................................................................................31
Overall values .............................................................................................32
Order values ...............................................................................................34
Speed values ..............................................................................................36
Limits .................................................................................................................38
Display of traces ...............................................................................................40
Y axis settings ............................................................................................41
Time axis settings .......................................................................................42
Cursors ..............................................................................................................43
Statistics ............................................................................................................45
Data export .......................................................................................................46
Report ...............................................................................................................48
Annunciators .....................................................................................................50
VM-REC (+) ..................................................................................................................51
Display area ............................................................................................................52
Setup area ..............................................................................................................54
Operation mode ................................................................................................55
Signal ................................................................................................................57
Overall values .............................................................................................58
Order values ...............................................................................................60
Speed values ..............................................................................................62
Limits .................................................................................................................64
Logging (Recording) .........................................................................................66
File settings .................................................................................................67
Interlock .......................................................................................................71
Annunciators .....................................................................................................72
VM-SCOPE (+) .............................................................................................................73
Display area ............................................................................................................74
Setup area ..............................................................................................................76
Memory depth ...................................................................................................77
Signal ................................................................................................................79
Display of traces ...............................................................................................81
Y axis settings ............................................................................................82
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Time axis settings .......................................................................................85
Trigger ...............................................................................................................86
Cursors ..............................................................................................................88
Data export .......................................................................................................89
Evaluation .........................................................................................................91
Decay curve ................................................................................................92
Head Injury Criterion (HIC) .........................................................................94
Frequency analysis ...........................................................................................96
Report ...............................................................................................................98
Annunciators .....................................................................................................99
VM-FFT (+) .................................................................................................................100
Display area ..........................................................................................................101
Setup area ............................................................................................................103
Signal ..............................................................................................................104
Trigger .............................................................................................................106
FFT Settings ...................................................................................................108
Bearing diagnosis ...........................................................................................110
Signal settings ..........................................................................................111
Markers .....................................................................................................112
Calculation of damage frequencies ..........................................................115
Bearing table .............................................................................................116
Display of traces .............................................................................................118
Y axis settings ..........................................................................................119
Frequency axis settings ............................................................................121
List of magnitudes ..........................................................................................122
Settings in operation mode "normal" ........................................................123
Results in operation mode "normal" .........................................................125
Settings in operation mode "Half-width" ...................................................126
Results in operation mode "Half-width" ....................................................128
Limits ...............................................................................................................129
Cursors ............................................................................................................131
Data export .....................................................................................................133
Report .............................................................................................................135
Annunciators ...................................................................................................136
VM-TRACK(+) .............................................................................................................137
Display area ..........................................................................................................138
Setup area ............................................................................................................142
Signal ..............................................................................................................143
Measuring run .................................................................................................145
Display of traces .............................................................................................147
Y axis settings ..........................................................................................148
Frequency axis settings ............................................................................150
Cursors ............................................................................................................152
Data export .....................................................................................................154
Report .............................................................................................................156
VM-BAL (+) .................................................................................................................157
Operation panels ..................................................................................................159
Settings .................................................................................................................160
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VibroMetra Manual
Rotor list ..........................................................................................................162
Rotor data .......................................................................................................164
Balancing aim .................................................................................................166
Vibration measurement ...................................................................................168
Rotation speed ..............................................................................................169
Measuring procedure ......................................................................................171
Polar graphics .................................................................................................172
Presets for mass changes ..............................................................................173
Units ................................................................................................................174
Balancing ..............................................................................................................175
Pilot survey .....................................................................................................178
Settings .....................................................................................................180
Measurement ............................................................................................182
Test runs .........................................................................................................184
Initial run ...................................................................................................185
Vibration measurement .......................................................................186
Test run plane A .......................................................................................188
Mass change ......................................................................................189
Vibration measurement .......................................................................192
Test run plane B .......................................................................................194
Mass change ......................................................................................195
Reversion of mass changes from test run A ................................197
Vibration measurement .......................................................................198
Test mass for the current run .......................................................199
Monitoring of measuring results ...............................................................200
Verification runs ..............................................................................................202
Mass change ............................................................................................203
Main display ........................................................................................205
Reversion of mass changes from a previous run .........................206
Selecting correction methods .......................................................207
Adding mass ...........................................................................209
Removing mass ......................................................................210
Drilling radially ........................................................................211
Milling radially .........................................................................212
Shifting fixed masses concentrically .......................................213
Shifting fixed masses radially towards the center...................214
Shifting fixed masses radially away from the center...............215
Performing the correction .............................................................216
Vibration measurement .............................................................................219
General functions ............................................................................................220
Side display for vibration measurement ...................................................221
Side display for balancing runs ................................................................222
Main vibration display for balancing run ...................................................223
Unbalance result .......................................................................................226
Mass list ....................................................................................................229
Report printing ......................................................................................................231
Tools ......................................................................................................................233
Summarizing balancing measures .................................................................234
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Reversion of earlier corrections................................................................236
Aktuellen Ausgleich zurücknehmen ....................................................238
Alten Ausgleich zurücknehmen ..........................................................239
Settings for summarization .......................................................................240
Summarization ..........................................................................................241
Balancing history ............................................................................................242
VM-BODY (+)..............................................................................................................245
Operation panels ..................................................................................................247
Measuring mode ...................................................................................................249
Sensor settings ...............................................................................................251
Data storage settings......................................................................................252
Report templates ............................................................................................253
Configuration options for the measurement mode .........................................254
Measurement ........................................................................................................256
Data storage .........................................................................................................259
Analysis .................................................................................................................262
Automatic A(8) calculation sheet ..........................................................................265
Annunciators .........................................................................................................267
VM-HAND (+)..............................................................................................................268
Operation panels ..................................................................................................269
Measuring mode ...................................................................................................270
Sensor settings ...............................................................................................272
Data storage settings......................................................................................273
Evaluation settings ..........................................................................................274
Report templates ............................................................................................275
Configuration options for the measuring mode ..............................................276
Measurement ........................................................................................................278
Data storage .........................................................................................................281
Analysis .................................................................................................................284
Automatic A(8) calculation sheet ..........................................................................287
Annunciators .........................................................................................................289
VM-SHIP (+) ...............................................................................................................290
Operation panels ..................................................................................................291
Measurement mode ..............................................................................................292
Sensor settings ...............................................................................................294
Data storage settings......................................................................................295
Report templates ............................................................................................296
Configuration options for the measurement mode .........................................297
Messung ................................................................................................................299
Data storage .........................................................................................................302
Analysis .................................................................................................................305
Annunciators .........................................................................................................308
VM-WIND (+) ..............................................................................................................309
Operation panels ..................................................................................................311
Measurement mode ..............................................................................................312
Sensor settings ...............................................................................................314
Data storage settings......................................................................................315
Report templates ............................................................................................316
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Configuration options for the measurement mode .........................................317
Measurement ........................................................................................................320
Data storage .........................................................................................................323
Analysis .................................................................................................................326
Annunciators .........................................................................................................329
VM-PERS(+) ...............................................................................................................330
Operation panels ..................................................................................................331
Settings .................................................................................................................332
Sensor settings ...............................................................................................334
Data storage settings......................................................................................335
Measurement site ...........................................................................................337
Report templates ............................................................................................338
Measurement mode ........................................................................................339
Measurement ........................................................................................................341
Data storage .........................................................................................................344
Vibration history ....................................................................................................347
Analysis .................................................................................................................350
Annunciators for events and data transmission in regular intervals .....................352
VM-STRUC(+) .............................................................................................................354
Operation panels ..................................................................................................355
Settings .................................................................................................................356
Sensor settings ...............................................................................................358
Instrument type ...............................................................................................359
Data storage settings......................................................................................360
Measurement site ...........................................................................................363
Report templates ............................................................................................364
Measurement mode ........................................................................................365
Measurement ........................................................................................................367
Data storage .........................................................................................................370
Vibration history ....................................................................................................373
Analysis .................................................................................................................376
Annunciators for events and data transmission in regular intervals .....................378
Report printing ............................................................................................................380
Unified indicators ........................................................................................................383
Control center VibroMetra ................................................................................................384
VibroMetra Online .......................................................................................................385
VibroMetra Simulator ..................................................................................................387
Properties of the measuring channel - signal generators.....................................388
VibroMetra Offline .......................................................................................................390
Working with raw data ..........................................................................................392
Navigator .........................................................................................................393
Notes and masks ............................................................................................398
Sensor management ..................................................................................................399
Properties of sensor .............................................................................................400
Basic data .......................................................................................................401
Calibration state ..............................................................................................402
User measurand .............................................................................................403
Properties of sensor group ...................................................................................404
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Context menu sensor ...........................................................................................405
Context menu sensor group .................................................................................406
Context menu selection tree ................................................................................407
Measuring channel management ...............................................................................408
Device type properties ..........................................................................................409
Device properties ..................................................................................................410
Measuring channel properties ..............................................................................411
Context menu measuring channel........................................................................414
Instrument management .............................................................................................415
Context menu instrument .....................................................................................417
Context menu selection tree ................................................................................418
Annunciator management ...........................................................................................419
Context menu annunciator type ...........................................................................421
Context menu annunciator ...................................................................................422
Annunciator type Large Display ...........................................................................423
Configuration of a Large Display annunciator ................................................424
Annunciator type E-mail .......................................................................................426
Settings for the annunciator type E-mail ........................................................427
Configuration of an E-mail annunciator ..........................................................429
Annunciator type Digital Output............................................................................433
Establish connection with ADAM network ......................................................436
Detect connected modules and change addresses if necessary ...................438
Configuration of a digital output .....................................................................440
Annunciator type Radio Switch ............................................................................442
Establish connection with the radio control unit .............................................444
Teaching in the radio outlet ............................................................................446
Configuration of a radio switch .......................................................................448
Control panels .............................................................................................................450
Displaying ..............................................................................................................451
Signal processing .................................................................................................453
Workspaces and templates ..................................................................................455
Open workspace or template .........................................................................457
Save workspace or template with new name.................................................459
Arbeitsplatz oder Vorlage löschen ..................................................................461
Record raw data ...................................................................................................462
Placeholders .........................................................................................................464
System information ...............................................................................................465
System information .........................................................................................466
System settings ..............................................................................................467
Event log .........................................................................................................468
Content
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VibroMetra Manual
VibroMetra 1.8.0
VibroMetra is an efficient, expandable and economical solution for vibration measurement. Whether in
laboratory, permanent industrial installations or field, VibroMetra can be used for each of these applications.
VibroMetra provides a variety of vibration instruments based on your PC. This approach guarantees a flexibility
which is unequaled by conventional instrumentation. Particular advantages are:
• You can operate several instruments with one common vibration sensor – without any disadvantages by
electrical connection of measuring instruments. VibroMetra organizes all digital data streams efficiently so
that all instruments work with exactly the same raw data.
• Duplicate your instruments during the measurement and watch data live with different settings.
• Operate several M302 or M312 USB interfaces at the same time. Measured data is read absolutely
synchronously, as if only one data acquisition device is used.
• Save and restore the screen arrangement of instruments with individual settings in workspaces. The last
setup can be restored automatically after starting the software
• which allows you to continue your last measurement immediately.
• Play measurements again with recorded data. While playing you can modify settings in all instruments to
obtain more information than intended during live measurement.
System Design
1. Piezoelectric sensors with integrated amplifier are directly connected to the PC via the M302 or M312 USB
adapter.
2. Piezoelectric sensors with charge output are connected with Metra's charge converter IEPE100 and
thereafter are able to transmit their signals to the PC as well.
3. One or more M302 or M312 units are connected to the USB interface of the PC. The PC supplies the M302
or M312 with energy. No external power supply is required.
4. The software instruments have been tailored for various measuring applications. Still, all instruments can
work on the PC screen at the same time. You can combine them at will. The operation is performed by
mouse. The results are displayed in real-time, high resolution and color. For unattended operation external
alarm devices, like alarm lights or buzzers, can be controlled by the VibroMetra software.
This help documented can be opened from any point in the program by pressing the F1 key.
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VibroMetra 1.8.0
VibroMetra Manual
Sensor Interface
For the connection of IEPE compatible sensors the USB interfaces Models M302 and M312 are used. They
power the sensor and convert its analog output into a digital USB data stream. VibroMetra uses a loss-free
USB transfer mode so that the data stream cannot be interrupted by other events. Other USB devices can
be used at the same time. The devices M302 and M312 are powered via the USB interface.
M302 and M312 in Comparison
Model
M302
M312
Inputs
2 IEPE / AC; RI > 1 MΩ (BNC)
1 digital trigger;
0 .. 15 V (Binder 711)
2 IEPE / AC; RI > 1 MΩ (BNC)
2 digital trigger;
0 .. 24 V (Binder 711)
2 analog DC ;
0 .. 10 V (Binder 711)
1 microphone (Binder 711)
IEPE supply
4 mA constant current of 24 V
2.8 mA constant current of 21 V
Outputs
USB 1.1
1 analog AC output (Binder 711)
USB 2.0
Frequency range
0.3 ..2000 Hz (-3 dB)
0.1 ..40 000 Hz (-3 dB)
Accuracy
<2%
<2%
Input voltage ranges
±10000 mV, ±1000 mV,
±100 mV, ±10 mV
±8000 mV, ±800 mV,
±80 mV, ±8 mV
Trigger level
3V
1,5 V
TEDS support
no
IEEE 1451.4
A/D conversion
16 bits, 10 kHz per channel
24 bits, 96 kHz per channel
RMS wide band noise
20 µV (0.3 .. 2000 Hz)
3 µV (0.1 .. 40000 Hz)
Sensor supply
+12 V / 30 mA at DCH1
+13,5 V / 35 mA at SYS1
Power supply
5 V / < 475 mA via USB
5 V / < 475 mA via USB;
optionally 10 .. 30 V external
Operating
range
temperature -20 .. 55 °C
-20 .. 55 °C
dimensions
WxHxD
55 x 24 x 84 mm³
(without sockets)
105 x 22 x 84 mm³
(without sockets)
Weight
130 g
200g
Advice for applications with more than two channels
The USB interface modules M302 and M312 must not be used together with one PC. Either M302
or M312 are allowed in a VibroMetra system.
The M312 modules must be interconnected by synchronization cables in multichannel systems.
Pin assignment of the connectors
Sensor Interface
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VibroMetra Manual
M302, DCH1
M312, SYS1
M312, SYS2
1
+12 V / 30 mA
VEXT (ext. supply)
VEXT (ext. supply)
2
DI_Trig1
GND (0 V)
GND (0 V)
3
-
+13.5 V / 35 mA
Microphone input
4
GND (0 V)
Trig_Sync
Trig_Sync
5
DI_ADC_Sync
DO_ADC_Sync
6
DI_Trig1(Trigger 1)
DI_Trig2 (Trigger 2)
7
GND (0 V)
GND (0 V)
8
Analog_Out (not used)
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Sensor Interface
VibroMetra Manual
Driver installation
To enable communication between the VibroMetra and the USB devices M302/M312, a device driver needs to
be installed.
The available drivers support Windows 2000, XP, Vista, 7 and 8 at 32 and 64 bit systems.
To install a device driver you need administrator rights.
The installation process is exemplified for Windows 8.
1. The lates driver files can be found at http://www.mmf.de/software_download.htm. They are provided as ZIP
files and need to be unpacked.
2. Connect the M302/M312 to your PC via a USB cable.
3. Open the Windows Control panel and there the folder System. Start the Device Manager where you find
your connected USB device under InnoBeamer L2.
4. Right-click at InnoBeamer L2 and select Update driver software.
5. Start Browse my computer for driver software. You will be asked to enter the path to the driver files you have
downloaded.
6. After finishing the installation process you may use your M302/M312 for measurement. The new devices
appear in the hardware list as VibroMatrix Devices.
Driver installation
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VibroMetra Manual
Software Instruments
Software instruments accept signals acquired by sensors and digitized by the M302 or M312 electronics
and provide you with real-time value displays, graphic displays and further information for various
applications of vibration measurement.
General Purpose Instruments
VM-METER
VM-PLOT
VM-REC
VM-SCOPE
VM-FFT
VM-TRACK
Displays RMS and peak of vibration and sound, rotation speed, frequency as number
values.
Displays RMS and peak of vibration and sound, rotation speed, frequency as time graph.
Records RMS and peak of vibration and sound, rotation speed, frequency into a file.
Displays real-time vibration sensor signals in time domain with high resolution.
Displays real-time vibration sensor signals in frequency domain with high resolution.
Order analysis of vibration sensor signals.
Special Purpose Instruments
VM-BAL
VM-BODY
VM-HAND
VM-SHIP
VM-PERS
VM-STRUC
VM-WIND
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Balancing system
Whole-body vibration measurement to ISO 2631-1:1997, ISO 2631-2:2003, ISO
2631-4:2001
Hand-Arm vibration measurement to ISO 5349, VDI 2057-2
Measurements of vibrations with regard to habitability on passenger and merchant ships
ISO 6954:2000
Measurement and evaluation of vibrations in buildings to DIN 4150-2 for the
determination of their effects on persons
Measurement and evaluation of vibrations in buildings to DIN 4150-3 for the
determination of their effects on structures
Measurement and evaluation of vibrations of wind energy plants VDI 3834
Software Instruments
VibroMetra Manual
VM-METER (+)
VM-METER displays RMS and peak of vibration and sound, rotation speed, frequency as number values.
VM-METER (+)
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VibroMetra Manual
Display area
In this section you see measuring values and status indicators.
Upper status bar
shows the connected sensor and input channel.
Statistics
Choose between instantaneous, average, maximum and minimum value. All four values are always
measured in the background.
• Statistics will help you to detect instability.
Lower status bar
• Shows selected vibration quantity and parameter, gain, overload and low signal indication.
Open settings
Opens and closes the setup menu.
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Display area
VibroMetra Manual
Copy
Copies value and unit into the clipboard.
Multiple copy
Copies value and unit of all opened VM-METER windows into the clipboard.
Clone
Opens a new window with same settings which can be modified.
Start/Stop
Starts and stops measurement.
Display area
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VibroMetra Manual
Setup area
Parameter
Overall values
Band filtering of a vibration signal and calculation of one measuring value.
Order values
Narrow band filtering of a vibration signal and calculation of one measuring
value.
Processes the the digital input signals from the M302/M312.
Frequency weighting of a microphone signal and calculation of one measuring
value.
Speed values
Acoustic values
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Setup area
VibroMetra Manual
Statistics
Selects between:
•
•
•
•
Current value
Minimum value
Maximum value
Average value
Statistics can be performed over the entire measuring time or a defined number of measurements.
Settings for the selected quantity
The controls depend on the selected quantity.
Setup area
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VibroMetra Manual
Overall values
These values are calculated from the analog inputs of the M302/M312.
Signal input
Selects the physical input and the gain of the USB device
M302/M312.
Filter
Here you adjust the frequency range of the displayed value
fmin to fmax.
Measurand
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Overall values
VibroMetra Manual
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration.
Characteristic
The following options are available:
4 peak
values:
True RMS:
Main
frequency:
THD
Crest
factor:
Positive, negative, absolute, peak-to-peak
Root mean square value
Frequency with the highest magnitude
Total harmonic distortion, deviation from pure sine-wave
Ratio of absolute peak and RMS
Time window
Time interval for calculating the characteristic value.
Overall values
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VibroMetra Manual
Order values
Order values are frequency selective. Only the signal at one frequency is measured. This frequency is
determined by the key phase (rpm) input of the M302/M312. You can also measure at multiples or fractions
of this frequency.
Signal input
Selects the physical input and the gain of the USB device
M302/M312.
Key phase selects the input of the digital rpm sensor.
Measurand
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Order values
VibroMetra Manual
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration.
Characteristic
A pure sine-wave signal remains after narrow-band filtering. The following
display options are available:
Peak
value
RMS
Shows the magnitude
Phase
angle
Phase shift between the sine-wave magnitude and the low-high slope of the digital rpm
signal
Root mean square value
Order
Selects multiples or fractions of the rotation frequency for band filtering.
Examplese:
Rotation frequency
Triple rotation
frequency
Half rotation
frequency
13/5 rotation
frequency
1:1
3:1
1:2
13 : 5
Minimum speed
The M302 and M312 units are capable of detecting down to 6 1/min. However, it may take up to 10
seconds to detect standstill. To shorten this detection time you may increase the minimum speed
value. For example at 30 1/min detection will be finished after 2 second. Frequencies below 30 1/
min will then be suppressed.
Order values
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VibroMetra Manual
Speed values
Speed values are measured at the digital input of the M302/M312.
Signal input
Selects the source for the rotation speed signal from the
connected M302/M312 devices.
Measurand
Choose between:
Rotation Shows the rotation frequency with the selected unit.
speed:
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Speed values
VibroMetra Manual
UserSee My measurand.
defined:
Available units are: Hz, 1/s, 1/min, 1/h
My measurand
By multiplication with a factor the frequency signal can be
transformed into another quantity, for example a track speed.
Characteristic
The only option is mean value.
Time window
Time window for calculating the mean value. Down to 0.1 Hz
can be measured which requires 10 seconds measuring time.
Speed values
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VibroMetra Manual
Acoustic values
For this mode a microphone has to be connected to at least one of the M302/M312 inputs.
Signal input
Selects the physical input and the gain of the USB device
M302/M312. The connected sensor has to be a microphone
(sound pressure sensor). Otherwise acoustic measurement
will be disabled.
Characteristic
Selects the weighting filter and automatically sets the time constant
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Acoustic values
VibroMetra Manual
LEX,8h
LpAeq
LpApeak
LpCeq
LpCpeak
Daily exposure level
Equivalent A-weighted continuous sound pressure level
Peak sound pressure level, A-weighted
Equivalent C-weighted continuous sound pressure level
Peak sound pressure level, C-weighted
Acoustic values
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VibroMetra Manual
VM-PLOT (+)
VM-PLOT measures and displays graphically parameters, like
• overall values, like vibration acceleration, velocity and displacement
• order values, i.e. frequency selective quantities, like phase and magnitude of acceleration
• speed values, i.e. digital signals, like rotation speed and frequency
These parameters draw a y/t diagram.
Such parameters allow a quick evaluation of a process. The parameter can be compared with a warning and
alarm limit. External alarm devices can be tripped.
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VM-PLOT (+)
VibroMetra Manual
Display area
Diagram
The diagram shows the measured parameter versus time. Two time axes are drawn:
upper: The clock time
lower: The elapsed time since since start
Display area
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VibroMetra Manual
For each channel a curve is drawn in a different color. Each curve has its own y axis with individual
scaling and zero shifting.
For changing the axis scaling the buttons
arrows.
and
are used. Shifting can be done by clicking the
Alternatively you may shift the axis with presses left mouse button and scale with right mouse
button pressed.
Status bars
This status bars indicate for overall and order values
•
•
•
•
•
•
the sensor
the measuring channel
the measured quantity
the gain setting
low signal
overload
and for speed values
• the measuring channel
• the measured quantity
Open settings
Opens and closes the setup menu.
Clone
Opens a new window with the same settings which can be modified.
Copy / Save
Copies the diagram data into the clipboard or saves it on hard disk. Different file formats can be
chosen.
Channels
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Display area
VibroMetra Manual
Increase or decrease the number of measuring channels (and curves). One to four channels are
possible.
Start/Stop
Starts and stops measurement.
Display area
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VibroMetra Manual
Setup area
The setup menu opens after clicking the Settings button.
Tabs for setup menus
Signal:
Limits:
Display:
Cursor:
Statistics:
Settings for the signal source
Settings for the warning and alarm limits
Settings for curve scaling and grids
Cursor enable / disable, cursor readout
Maximum, minimum and average values for each channel
Data transfer: Settings for the copy / save button
Report:
Settings for report printing
Annunciators: Settings for external alarm devices
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Setup area
VibroMetra Manual
Signal
Channels
All settings can be entered independently for each channel. Different parameters, like
vibration and frequency can be mixed in one diagram.
• The number of tabs depends on the number of active channels.
• Channel D will be always visible. It has a special function.
Parameter groups
The selectable parameters are arranged in the following groups:
Overall
values
Order values
Speed values
Vibration signals with high pass and low pass filtering and peak or RMS
detection
Vibration signals with narrow-band filtering and peak or RMS detection
Signals from the digital inputs of the M302/M312.
Changing a parameter results in a restart of measurement.
Signal
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VibroMetra Manual
Overall values
For overall vibration values VM-PLOT measures analog input signals from the M302/M312 devices.
Signal input
Selects the physical input and the gain of the USB device
M302/M312.
Filter
Here you adjust the frequency range of the displayed value
fmin to fmax.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-PLOT+ only).
Characteristic
The following options are available:
4 peak
Positive, negative, absolute, peak-to-peak
values:
True RMS:
Root mean square value
Main
Frequency with the highest magnitude
frequency:
THD
Total harmonic distortion, deviation from pure sine-wave
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Overall values
VibroMetra Manual
Crest
factor:
Ratio of absolute peak and RMS
Time window
Time interval for calculating the characteristic
value.
Overall values
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VibroMetra Manual
Order values
Order values are frequency-selective vibration values. The frequency of the bandpass filter is measured at
the digital input of a M302/M312. The bandpass filter can also be set at multiples or fractions (orders) of this
frequency.
Signal input
Selects the physical input and the gain of the USB device
M302/M312 for the analog signal and the digital input for
frequency measurement.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-PLOT+ only).
Characteristic
After passing the bandpass filters a sine-wave signal will remain.
The following parameters can be measured to characterize it:
Peak value Magnitude
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Order values
VibroMetra Manual
RMS
Phase
angle
Root mean square value
Phase shift between the sine-wave magnitude and the low-high slope of the
digital rpm signal
Order
Selects multiples or fractions of the rotation frequency for bandpass
filtering.
Examples:
Rotation
frequency
Triple rotation
frequency
Half rotation
frequency
13/5 rotation
frequency
1:1
3:1
1:2
13 : 5
Minimum speed
The M302 and M312 units are capable of detecting down to 6 1/min. However, it may take up to 10
seconds to detect standstill. To shorten this detection time you may increase the minimum speed
value. For example at 30 1/min detection will be finished after 2 second. Frequencies below 30 1/
min will then be suppressed.
Order values
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VibroMetra Manual
Speed values
Speed values are measured at the digital inputs of the M302/M312 devices.
Signal input
Selects the digital input
Measurand
Choose between:
Rotation
Shows the rotation frequency with the selected unit.
speed:
User
See User defined.
measurand:
Available units are: Hz, 1/s, 1/min, 1/h
Characteristic
The only option is mean value.
Time window
Time window for calculating the mean value. Down to 0.1 Hz can be
measured which requires 10 s measuring time.
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Speed values
VibroMetra Manual
User defined measurand
By multiplication with a factor the frequency signal can
be transformed into another quantity, for example a
track speed.
After selecting User measurand in the Measurand menu you may enter:
User defined
the name of your measurand.
Unit
measuring unit
1 1/min ->
conversion factor
Speed values
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VibroMetra Manual
Limits
The measurand can be compared with warning and alarm limits. These limits can be displayed as lines in
the diagram.
Channels
• All settings can be entered independently for each channel. The number of tabs depends on
the number of active channels.
Alarm limit
The alarm limit is entered in measuring units according to the
channel settings.
Warning limit
The warning limit is entered in percent of the alarm limit.
Draw lines
If the checkboxes are activated the alarm limits will be drawn as lines in the
diagram.
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Limits
VibroMetra Manual
Alert
When the measuring signal crosses a limit line VM-PLOT can perform the following
actions:
• Saving the measured data on disk
• controlling external alarm devices
Logic combination of alarms
Each channel may have the following conditions:
• below warning limit:
• above warning limit:
• above alarm limit:
OK
Warning
Alarm
These channel status conditions can be combined to an overall status (channel O) by means of
logic operations.
Limits
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Display of traces
Settings for Y axes
These settings change vertical scaling and arrangement of
traces in the diagram.
Shift all traces
Shifts all traces together into the desired direction.
Settings for time axis
These settings change horizontal scaling and scrolling of traces
in the diagram.
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Display of traces
VibroMetra Manual
Y axis settings
Grid density
If you activate this checkbox, VM-SCOPE will show grid lines at all graduation marks
of the Y-axis.
Permanent autoscaling
Rescales the diagram after each update with the last scaling mode.
Step size
The step width in percent of full scale length for shifting the signal trace.
Scaling modes
There are four scale modes:
•
•
•
•
All curves are maximized.
Same scale for all curves.
All curves are maximized and stacked with their own area.
All curves use the same scale, they are stacked with their own
area.
Compress / expand
These buttons expand or compress all traces in Y direction.
Y axis settings
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VibroMetra Manual
Time axis settings
Grid density
If you activate this checkbox, VM-PLOT will show grid lines at all graduation marks of
the Y axis.
Step size
The step size (shown in scale lengths) by which measurement curves and
scale are shifted during a movement. For instance, 10% means that the
measurement curves are moved by 1/10 of the frequency axis.
Permanent autoscaling
Scales the trace always in a way that always the complete measuring time will be visible.
Automatic scaling
Scales the trace once in a way that the complete
measuring time is visible.
Compress expand
These buttons expand or compress all measurement curves in time
direction.
Scroll automatically
Shifts the curve left if it reaches the right edge so that
always the current value will be shown.
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Time axis settings
VibroMetra Manual
Cursors
Cursor on/off
Shift cursor
Shift the cursor in the direction of the time axis. Shifting is also possible by dragging the
cursor line directly.
Cursor data
Cursor time position and measuring value for each trace at this moment.
Open the cursor menu at cursor motion
When this option is selected the cursor tab will open automatically when the position of the cursor line
is moved by the mouse.
Difference between cursor values
Cursors
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VibroMetra Manual
Shows the difference of magnitude and time between the two
cursors.
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Cursors
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Statistics
Shows statistic parameters for the currently displayed time section.
Statistics
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Data export
These settings control the action after clicking the copy / save button.
Copy to clipboard
Selects the Copy function.
Save to file
Selects the Save function. In addition periodic saving can be activated.
File name
Enter the name of the file to be saved. The file name may include variables, like date, time, channel
etc.
Export mode
The following modes are available:
• Export only
Data is only saved when clicking the Save button
manually
• Export periodically Data is saved in time intervals. In addition manual saving is possible.
• Export event
controlled
46
Data export
Data is saved when a trace crosses a limit line. In addition manual saving is
possible.
VibroMetra Manual
File format
The following formats can be chosen for the export file
• Bitmap
raster graphics file format
• PNG
• Enhanced
Metafile
• Text
raster graphics file format, less than 10 % of
bitmap file size without loss of quality
Windows enhanced metafile format, allow later
changes of characters
data is saved in a text table format including
header which allows later processing by table
calculation software
Data export
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VibroMetra Manual
Report
Here the settings are made for printing reports including text information, diagrams, logos etc. After designing
the report layout you may save these settings.
Configure reports
In this tree view you find the available report templates. Some sample reports are provided. You may
adapt them to your needs.
Printer setup
Opens the printer configuration menu.
Select report template
You can select one of the report templates for printing.
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Report
VibroMetra Manual
Print report
Report
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VibroMetra Manual
Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
Channel
For each channel the annunciators can be assigned separately. For logic combinations of
channel events use channel O.
Annunciators
Shows a list of available and used annunciators.
Annunciator management can be found in
VibroMetra Online.
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Annunciators
VibroMetra Manual
VM-REC (+)
VM-REC measures and records graphically parameters, like
• overall values, like vibration acceleration, velocity and displacement
• order values, i.e. frequency selective quantities, like phase and magnitude of acceleration
• speed values, i.e. digital signals, like rotation speed and frequency
In addition it records real-time signals for later processing by other software.
Recorded data is saved in a file.
The current measuring value is shown as bar graph and number.
Recording is triggered when the measurand exceeds the entered limit value.
VM-REC (+)
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Display area
This section shows the most important status and signal data.
Measuring value
VM-REC displays the measuring value and status information for each channel. The channel
number can be found on the left side. There is a bar graph and a number display for the measuring
value.
Below is a status bar giving information about
•
•
•
•
•
52
connected sensor
used input channel
selected measurand
slelected parameter
gain, low signal and overload.
Display area
VibroMetra Manual
Instrument status
If pre-trigger memory is filling with data a bar graph will indicate the fill level. The colored indicator in
the middle shows the instrument status:
OK
No limit value exceeded
TRIG
Limit value exceeded but alarm delay not yet elapsed
ALARM Limit value exceeded and alarm delay elapsed
The field on the right side indicates the number of records.
Channel number
Increase or decrease the number of measuring channels (and curves). One to four channels are
possible.
Open settings
Opens and closes the setup menu.
Clone
Opens a new window with the same settings which can be modified.
Start/Stop
Starts and stops measurement.
Display area
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Setup area
Tabs for setup menus
Operation
mode
Signal
Limits
Logging
Annunciators
54
Setup area
Parameter or real-time signal recording
Signal settings
Limit values for recording
Settings for record length and stop conditions
Settings for external alarm devices
VibroMetra Manual
Operation mode
Characteristics mode
Records compressed values like RMS or peak.
Signal mode
Records real-time signals with the chosen data rate. Since these values may be very fluctuating the
bar graph will show only the highest magnitude with the respective sign.
Data rate
In Signal mode you can decide whether the signals are recorded with maximum or with adaptive data
rate.
Maximum data
rate
The full sampling rate of the M302/M312 will be used for recording:
Adaptive data
rate
The recording data rate is set according to the used low pass filters. The sampling
rate will be sufficiently high to meet the Nyquist criterion.
Example: All channels use a 10 Hz low pass. It is not necessary to sample with the
full rate of 96 000 Hz. The sampling rate can be reduced to < 1000 Hz which will
reduce the amount of data by 99 % without loss of information.
• 10 kHz for M302
• 96 kHz for M312
Digital input
Operation mode
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VibroMetra Manual
For automated test systems it can be advantageous to control VM-REC by an external trigger, which is
a digital input of the M302/M312 devices. VM-REC starts when logic high level is detected and stops at
low level.
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Operation mode
VibroMetra Manual
Signal
Channels
All settings can be entered independently for each channel. Different parameters, like
vibration and frequency can be mixed in one diagram. The number of tabs depends on
the number of active channels.
Parameter groups
The selectable parameters are arranged in the following groups:
Overall values Vibration signals with high pass and low pass filtering and peak or RMS
detection
Order values Vibration signals with narrow-band filtering and peak or RMS detection
Speed values Signals from the digital inputs of the M302/M312.
Only two options will be available in the operation mode Signals:
Sensor
Vibration signals with high pass and low pass filtering and peak or RMS
signals
detection
Speed signals Signals from the digital inputs of the M302/M312.
Changing a parameter results in a restart of measurement.
Signal
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Overall values
For overall vibration values VM-PLOT measures analog input signals from the M302/M312 devices.
Signal input
Selects the physical input and the gain of the USB device
M302/M312.
Filter
Here you adjust the frequency range of the displayed value
fmin to fmax.
The fmax setting may control the recording data rate.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-REC+ only).
The unit should be selected in a way that the measuring value does not drop below 0.001
permanently.
Characteristic
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Overall values
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The following options are available:
4 peak
Positive, negative, absolute, peak-to-peak
values:
True RMS:
Root mean square value
Main
Frequency with the highest magnitude
frequency:
THD
Total harmonic distortion, deviation from pure sine-wave
Crest
Ratio of absolute peak and RMS
factor:
Time window
Time interval for calculating the characteristic value.
Overall values
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Order values
Order values are frequency-selective vibration values. The frequency of the bandpass filter is measured at
the digital input of a M302/M312. The bandpass filter can also be set at multiples or fractions (orders) of this
frequency.
Signal input
Selects the physical input and the gain of the USB device
M302/M312 for the analog signal and the digital input for
frequency measurement.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-REC+ only).
Characteristic
After passing the bandpass filters a sine-wave signal will remain. The following
parameters can be measured to characterize it:
Peak
value
RMS
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Order values
Magnitude
Root mean square value
VibroMetra Manual
Phase
angle
Phase shift between the sine-wave magnitude and the low-high slope
of the digital rpm signal
Order
Selects multiples or fractions of the rotation frequency for bandpass filtering.
Examples:
Rotation
frequency
Triple rotation
frequency
Half rotation
frequency
13/5 rotation
frequency
1:1
3:1
1:2
13 : 5
Minimum speed
The M302 and M312 units are capable of detecting down to 6 1/min. However, it may take up to 10
seconds to detect standstill. To shorten this detection time you may increase the minimum speed
value. For example at 30 1/min detection will be finished after 2 second. Frequencies below 30 1/
min will then be suppressed.
Order values
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Speed values
Speed values are measured at the digital input of the M302/M312.
Signal input
Selects the
digital input
Measurand
Choose between:
Rotation
Shows the rotation frequency with the selected unit.
speed:
User
See User defined.
measurand:
Available units are: Hz, 1/s, 1/min, 1/h
Characteristic
The only option is mean
value.
Time window
Time window for calculating the mean value. Down to 0.1 Hz can be
measured which requires 10 s measuring time.
User measurand
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By multiplication with a factor the frequency signal
can be transformed into another quantity, for
example a track speed.
After selecting User measurand in the Measurand menu you may enter:
User
the name of your measurand.
defined
Unit
measuring unit
1 1/min ->
conversion factor
Speed values
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VibroMetra Manual
Limits
Recording is triggered when a limit was exceeded. The limits can be entered for each channel separately.
Channel
All settings can be entered independently for each channel. Different parameters, like vibration
and frequency can be mixed in one diagram. The number of tabs depends on the number of
active channels.
Alarm logic
You may decide whether recording is triggered if
• the signal is inside the limits
• the signal is outside the limits
Tripping delay
If short signal peeks shall not start a recording you may enter here a
minimum duration. The alarm condition must persist during this time
before recording is triggered.
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Alarm and bar graph limits
You can enter here a lower and an upper alarm limit. The limits are indicated by red markers above
the bar graph. At the same time the alarm limits set the length of the bar graph. The length can be
entered in percent above / below the alarm limit.
Overall state
The individual alarm settings of each channel determine whether an alarm event is detected. After
the tripping delay is over the alarm will be set. In overall state you may select whether a single
channel alarm or all alarms need to be set in order to trigger recording:
• AND: all channels need to be in alarm condition to trigger recording
• OR: recording is triggered by an alarm condition at any channel
Limits
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VibroMetra Manual
Logging (Recording)
These settings control how measuring data is saved on hard disk.
Set / Lock
These tabs provide settings for
• Recording
• Criteria for stopping VMREC
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Logging (Recording)
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File settings
Log duration
Pretrigger allows to record signals that occur before the actual trigger event. It can be up to 30
seconds.
Posttrigger sets the duration of recording after the trigger event. Maximum value is 24 hours.
Log file
Here you enter file name, folder and file type.
The option Create default name automatically generates a file name as follows:
year-month-day-hour-minute-second VM-REC ID. The default folder is <your VibroMetra folder>
\Data\M302/M312 serial number.
Alternatively you can enter your own file name, including variables.
These are the available file formats:
Header>text, Data- A single file is generated with header data in text format and recording data in
>binary
binary format.
Header->text, Data- Both header and data are saved in text format in a single file.
>text
1: Header->text, 2: Two files are generated, one containing the header data as text, the other
Data->binary
containing binary data.
File settings
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Header example:
Version=1.8
VM-REC version number
Pretrigger=5
Pretrigger time in seconds
Posttrigger=30
Posttrigger time in seconds.
SampleRate=10000
SampleRate in samples per second
NumChannels=3
Number of active channels
Channel settings
Settings for channel 1, identified by ending "_1".
InputID_1=K1 - M302 #1000
channel number, device type and serial number
InputName_1=Lager 12
Channel name
Sensor_1=KS80 3346
Sensor name
Measurand_1=0
Index of the selected measurand in the menu, starting with 0
MeasurandName_1=acceleration
Measurand as text
Unit_1=1
Index of the selected unit in the menu, starting with 0
UnitName_1=mm/s²
Unit as text
Parameter_1=5
Index of the selected parameter in the menu, starting with 0
ParameterName_1=Echter Effektivvalue
Parameter as text
fmin_1=0.3
Lower filter frequency
fmax_1=200
Upper filter frequency
LimitMax_1=75
Upper alarm limit
LimitMin_1=0
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File settings
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Lower alarm limit
UpperAdd_1=10
Upper bar graph extension in percent
LowerAdd_1=0
Lower bar graph extension in percent
After channel 1 follow the settings of the other active channels (NumChannels), marked with "_2"
etc.
Measuring data
These fields specify the data format:
DataType=binary
binary or text format
DataStart=1024
Byte position of the first data byte in binary mode, first text line in text mode
DataSize=4
Data type, 4 = 4 byte floating point numbers (float), 8 = 8 byte floating point numbers (double)
There is no DataSize in text format where the values are separated by line separators.
After this the actual data follows in the order of channels (example for 3 channels):
value 1, channel 1; value 1, channel 2; value 1, channel 3;
value 2, channel 1; value 2, channel 2; value 2, channel 3;
value 3, channel 1; value 3, channel 2; value 3, channel 3;
value 4, channel 1; value 4, channel 2; value 4, channel 3;
...
To program external software for the reading of data you need to check DataType to identify the
type of data (binary / text). DataStart is used to set the pointer to the start position. DataSize
determines the size (float/double). With this information reading can be performed. Header data,
like MeasurandName and UnitName, can be used for diagram text etc. Time axis information is
derived from SampleRate.
To calculate the amount of data, add Pretrigger and Posttrigger from the header and multiply by
SampleRate and NumChannels.
Information
Here you are informed about the expected file size. The colors mean:
Space left for more than
10 files
Space left for 1 to 10 files
Disk full
Logging mode
File settings
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Usually recording will be triggered by an overall status event. Sometimes immediate recording after
start is desired. This feature is often used in combination with external start.
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File settings
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Interlock
VM-REC is often used in remote places to capture unpredictable events. In this case it may be useful to
determine when logging shall be stopped. Three criteria are selectable in any combination. Recording is
stopped if any of the conditions is met.
Number of files
VM-REC stops after the specified number of files.
Minimum time between files
Sets the minimum time between two files.
Remaining disk size
If the remaining disk space drops below the entered value VM-REC will be stopped.
Interlock
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
Channel
For each channel the annunciators can be assigned separately. For logic combinations of channel events
use channel O.
Annunciators
Shows a list of available and used annunciators.
Annunciator management can be found in VibroMetra
Online.
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Annunciators
VibroMetra Manual
VM-SCOPE (+)
VM-SCOPE is a versatile tool for the observation of vibration and shock transients in time domain.
It can help to answer questions like
•
•
•
•
•
Is the vibration composed of several frequencies or is it just one?
Are the shock components?
Are there beat frequencies?
What is the peak amplitude?
How long is the shock duration?
The VM-SCOPE data memory holds 10 million samples per channel. The time graph can be exported as text or
graphics.
• VM-SCOPE+ also measures velocity and displacement based on integrated acceleration.
• VM-SCOPE+ also displays HIC (Head Injury Criterion) and the decay curve.
• VM-SCOPE can be coupled with VM-FFT to simplify the measurement of natural frequencies.
VM-SCOPE (+)
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Display area
Diagram
The diagram shows the vibration signal versus time. There is one trace per channel. Each one has
its y axis which can be independently scaled and shifted.
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Display area
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Scaling is done with the buttons
and
. Click the arrows to shift the axis.
The time axis can be scaled and shifted directly by the mouse pointer. Hold the left mouse button to
shift and the right button to zoom.
Status bars
This status show the most important channel setings
•
•
•
•
•
•
the sensor
the measuring channel
the measured quantity
the gain setting
low signal
overload
Open settings
Opens and closes the setup menu.
Clone
Opens a new window with the same settings which can be modified.
Copy / Save
Copies the diagram data into the clipboard or saves it on hard disk. Different file formats can
be chosen.
Channels
Increase or decrease the number of measuring channels (and curves). One to four channels are
possible.
Start/Stop
Starts and stops measurement.
Display area
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Setup area
The setup menu opens after clicking the Settings button.
Tabs for menus
The submenus are:
Memory
depth:
Signal:
Display:
Trigger:
Cursor:
Data export:
Evaluation:
FFT
Report:
Annunciators:
76
Setup area
Settings for the use of memory
Settings for the signal source
Settings for curve scaling and grids
Trigger source, slope, pre and post trigger
Cursor enable / disable, cursor readout
Settings for the copy / save button
Automated evaluation of the traces
Settings for the communication with VM-FFT
Settings for report printing
Settings for external alarm devices
VibroMetra Manual
Memory depth
VM-SCOPE stores 10 million samples per channel. The use of this memory can be controlled in the Memory
depth menu. If, for example, 40 kHz bandwidth are needed, VM-SCOPE will store about 100,000 samples per
second. We assume that the measuring time is 10 seconds which results in 1 million samples. If VM-SCOPE
averages 10 measurements the memory of 10 million samples will be filled completely.
Maximum signal frequency
This is the highest frequency for the band filter. The band filter can always be set to lower frequencies.
VM-SCOPE ensures that the signal will always be free of aliasing effects.
Maximum posttrigger time
The maximum duration of measurement starting at the trigger event. It can always be set to lower
values during measurement.
Maximum number of averages
Maximum number of averaged measurements. It can always be set to lower values during
measurement.
Confirm settings
After making above settings click this button to check whether the available memory is
sufficient. Measurement cannot be started before confirmation.
Maximum memory usage
Memory depth
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The bar graph indicates how much memory will be used with your settings.
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Memory depth
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Signal
Channels
All settings can be entered independently for each channel. For example, you may
use different filters. The number of tabs depends on the number of active channels.
Signal input
Selects the physical input and the gain of the USB
device M302/M312.
Filter
Here you adjust the frequency range of the
displayed value fmin to fmax.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-SCOPE+ only).
Signal
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VibroMetra Manual
The unit should be selected in a way that the measuring value does not drop below 0.001
permanently.
Invert signal
Inverts the sign of the measured signal. This can be useful, for example, to compensate the
mounting direction of an accelerometer.
Signal statistics
If this checkbox is activated VM-SCOPE will hold several subsequently triggered measurements in
its memory. This will allow to select in Display menu between several display modes which help to
detect signal variations.
Number of signals
The number of signals used for statistics.
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Signal
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Display of traces
Y axes settings
These settings change vertical scaling and arrangement of traces
in the diagram.
Shift all traces
Shifts all traces together into the desired direction.
Time axis settings
These settings change horizontal scaling and scrolling of traces in
the diagram.
Display of traces
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Y axis settings
Grid density
If you activate this checkbox, VM-SCOPE will show grid lines at all graduation
marks of the Y axis.
Permanent autoscaling
If you activate this checkbox, VM-SCOPE will rescale the Y-axes each
time the measurement chart is refreshed, using the last scaling mode.
Step size
The step size (shown in scale lengths), by which measurement curves and scale are
shifted during a movement. For instance, 10% means that the measurement curves
are moved by 1/10 of the Y-axis.
Scaling modes
There are four scale modes:
•
•
•
•
All curves are maximized.
Same scale for all curves.
All curves are maximized and stacked with their own area.
All curves use the same scale, they are stacked with their own
area.
Compress / expand
These buttons expand or compress all traces in Y direction.
Statistics
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Y axis settings
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The Statistics function can be used to evaluate several subsequent measurements. You may display
average value or compare the measured value with maximum and minimum values. Statistics
function is activated and the number of signals is entered in the Signal menu.
The following statistic calculations can be performed:
Current
signal
Maximum
value
Mean
value
Minimum
value
Current
signal
with
maximum
and
minimum
values
Mean
value
with
maximum
and
minimum
values
Y axis settings
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Time axis settings
Grid density
If you activate this checkbox, the VM-SCOPE will show grid lines at all graduation marks
of the time axis.
Permanent autoscaling
Scales the time axis automatically so that always three periods of the dominant
signal are shown.
Step size
The step size (shown in scale lengths) by which measurement curves and scale are
shifted during a movement. For instance, 10% means that the measurement curves are
moved by 1/10 of the frequency axis.
Automatic scaling
Scales the time axis once so that three periods of the dominant
signal are shown.
Compress / expand
These buttons expand or compress all measurement curves in time
direction.
Time axis settings
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Trigger
The trigger settings determine the starting conditions for a new measurement.
Trigger source
Trigger sources can be the analog input signals or the digital inputs of the M302/M312 devices.
Trigger mode
Behavior after recording:
• Free running: The trace will continue to run trough the diagram
• Normal: The trace will freeze till the next trigger event
• Single: VM-SCOPE stops, freezes the trace and does not trigger
again.
Trigger slope
Triggering at rising ( _/¯ ) or falling ( ¯\_ ) signal slope
Trigger level
Trigger level for analog sources
Trigger times
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Length of recording before and after thze trigger event
Posttrigger to right border
Activate this checkbox to set the posttrigger time automatically to the
right end of the time axis.
If this feature is not activated recording duration can be manually set by the posttrigger and the
signal trace may reach outside the visible diagram range.
Trigger
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Cursors
Cursors on/off
Cursor data
Cursor time position and measuring value for each trace at this moment.
Shift cursor
Shift the cursor in the direction of the time axis. Shifting is also possible by
dragging the cursor line directly.
Open the cursor menu at cursor motion
When this option is selected the cursor tab will open automatically when the position of the cursor line
is moved by the mouse.
Difference between cursor values
Shows the difference of magnitude and time between the two cursors.
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Data export
These settings control the action after clicking the copy / save button.
Copy to clipboard
Selects the Copy function.
Save to file
Selects the Save function. In addition trigger controlled saving can be activated.
File name
Enter the name of the file to be saved. The file name may include variables, like date, time, channel
etc.
Saving mode
Two modes are available:
• Manually
VM-FFT only saves when clicking the save button.
(unchecked)
• At trigger
(checked)
VM-FFT starts saving at a trigger event. The maximum saving time can be
entered.
Data export
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File format
The following formats can be chosen for the export file
• Bitmap
raster graphics file format
• PNG
• Enhanced
Metafile
• Text
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Data export
raster graphics file format, less than 10 % of bitmap file
size without loss of quality
Windows enhanced metafile format, allow later changes
of characters
data is saved in a text table format including header
which allows later processing by table calculation
software
VibroMetra Manual
Evaluation
VM-SCOPE+ offers the evaluation of the measured traces in terms of HIC (Head Injury Criterion) and decay
time.
Evaluation mode
The available evaluation options are
• No
evaluation
• Decay
time
• Head
Injury
Criterion
(HIC)
Evaluation
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Decay curve
If a signal trace is measured after triggering VM-SCOPE+ can envelope the signal automatically and draw a
decay curve. Decay time and exponential decay time are displayed.
Settings and results
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Two limits can be set for decay time measurement. They mark the magnitudes limits between which
VM-SCOPE+ calculates the decay time. The table shows the magnitudes on both ends in percents
of the maximum magnitude and the time between them. The limits and the curves can be displayed
in the diagram.
Signal trace with time limits and decay curve
Decay curve
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Head Injury Criterion (HIC)
Head Injury Criterion or Head Impact Criterion (HIC) is a measure of the likelihood of head injury arising
from an impact. The HIC can be used to assess safety related to vehicles, personal protective gear, and
sport equipment.
Evaluated period
Selects the part of the trace to be evaluated. This can be the time between trigger event and first
zero crossing or a fixed time interval.
Maximum duration
The time interval for HIC calculation. Common values are 15 and 36 ms(HIC15 and HIC36).
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Measuring values
The values found by HIC calculation are listed for each channel. They can be displayed in the
diagram.
Head Injury Criterion (HIC)
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Frequency analysis
VM-SCOPE can control the frequency analyzer VM-FFT for an event triggered analysis.
Start VM-FFT
The connection between VM-SCOPE and VM-FFT (if licensed) is established by clicking this button.
A VM-FFT window will be placed on the right side of VM-SCOPE. VM-FFT is controlled by VM-SCOPE and will
analyze the shown time range.
There are the following dependencies:
• VM-SCOPE starts VM-FFT.
• VM-FFT stops if VM-SCOPE is stopped.
• VM-FFT is moved together with the VM-SCOPE window.
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•
•
•
•
•
•
•
•
The analysis in VM-FFT is triggered by VM-SCOPE.
If VM-SCOPE is waiting for a trigger no analysis is performed.
If VM-SCOPE is closed VM-FFT also closes.
Changing the signal source in VM-SCOPE changes also the signal source in VM-FFT provided that VM-FFT
is licensed for this channel.
Changing the measurand in VM-SCOPE changes the measurand in VM-FFT. The units can be set
independently.
Changing the band filter in VM-SCOPE sets the maximum frequency in VM-FFT.
The settings for pre and post trigger in VM-SCOPE determine the time interval for analysis. Since an FFT
only allows discrete time windows at a certain sample rate it may occur that VM-FFT fwill fill missing values
with zeros.
Conflicts caused by certain VM-FFT settings are marked yellow.
Frequency analysis
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Report
Here the settings are made for printing reports including text information, diagrams, logos etc. After designing
the report layout you may save these settings.
Configure reports
In this tree view you find the available report
templates. Some sample reports are provided. You
may adapt them to your needs.
Printer setup
Opens the printer configuration menu.
Select report template
You can select one of the report templates for printing.
Print report
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
List of annunciators
Shows a list of available and used annunciators.
Annunciator management can be found in
VibroMetra Online.
Annunciators
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VM-FFT (+)
Vibrations mostly consist of a mix of different frequencies. TVM-FFT decomposes this mix into its different
frequencies and thus allows the detection of causes for the different vibration frequencies. It is also used to
detect the natural frequencies of bodies or damages on rolling bearings.
The VM-FFT offers more than one million lines and a resolution better than 0.01 Hz.
VM-FFT simplifies the setup process by presets for typical applications. Even users with less experience will
quickly be able to perform an FFT with optimum resolution.
Experienced users may change all relevant settings like, for example, window functions and averaging
techniques.
With its trigger function or in combination with VM-SCOPE single or uncontinuous events can be analyzed. An
example is resonance finding by an impulse hammer.
VM-FFT+ features an envelope function for bearing analysis.
For stochastic signals power spectral density analysis (PSD) may be useful.
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Display area
Diagram
The magnitudes at the different frequencies are displayed in the diagram. One curve is displayed
for each measuring channel. Each curve has its own y-axis which can be scaled and scrolled
independently.
Display area
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Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and . Scrolling is carried out by clicking on the scroll arrows. The display control panel
contains more settings for the measurement chart.
By means of the mouse, the measurement chart can be zoomed or scrolled on the frequency axis.
The chart is scrolled with the left mouse button held down. By holding down the right mouse button,
you choose an area to be zoomed.
Status bar
The status bar indicates the most important settings for the respective channel of the instrument:
•
•
•
•
•
•
•
•
Sensor
Measuring channel
Measurand
Characteristic
Gain
Underload
Overload
Progress of read time data
Open settings
Opens and closes the setup menu.
Clone
Opens a new window with the same settings which can be modified.
Copy / Save
Copies the diagram data into the clipboard or saves it on hard disk. Different file formats can
be chosen.
Channels
Increase or decrease the number of measuring channels (and curves). One to four channels are
possible.
Start / Stop
Starts and stops measurement.
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Setup area
Tabs for menus
The submenus are:
Signal:
Trigger:
FFT:
Bearing
diagnosis:
Display:
List of
magnitudes:
Limits:
Cursors:
Signal processing settings to condition the signal
Settings to analyze processes with defined starting points
Extended settings for frequency analysis
Diagnosis of damages on rolling bearings
Settings for the display of measurement curves
Automatic detection of magnitudes, display and half width identification
Data export:
Settings for limit curves
Activation/deactivation of cursors, display of measurement data at the cursor
position
Settings for destination, time and formats of data to be saved
Report:
Annunciator:
Settings for report printing
Settings for actions of annunciators, e.g. in case of limit exceedance
Setup area
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Signal
Channels
All settings can be entered independently for each channel. For example, you may
use different filters. The number of tabs depends on the number of active channels.
Signal input
Selects the physical input and the gain of the USB
device M302/M312.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-FFT+ only).
The unit should be selected in a way that the measuring value does not drop below 0.001
permanently.
Characteristic
Selects peak or RMS spectrum.
FFT mode
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VM-FFT can be operated in different modes:
Automatic mode
In this mode, the setting of the FFT parameters is carried out automatically. You only select the
desired frequency range. Based on this setting, the InnoAnalyzer determines the line density. The
time window is automatically set in a way that each displayed line is covered by a calculated line.
The Flattop window is used for weighting in time domain. It displays magnitudes in a very exact
way. Overlapping is 0.
Since the selected frequency range is the base for the FFT parameters, the FFT is set anew in case
of changing the frequency range.
Manual settings
Two new tabs are available after having chosen this mode. Here you can configure many
parameters for the FFT manually and also carry out a triggered FFT if required.
Bearing diagnosis
The two tabs for the manual configuration are available as well as an additional tab for adjusting
bearing frequencies. These frequencies make it easy to assign displayed frequencies to damages
on rolling bearings.
Power spectral density (PSD)
For measuring stochastic vibration processes, e.g. vibrations during the transport of goods, the
power spectral density is used. A respective control panel opens when selecting this mode.
Signal
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Trigger
The trigger control panel is available in all FFT modes except the automatic mode. Without trigger, the FFT
is carried out continuously with the measured data from time domain. By using a trigger, the FFT only starts
after defined conditions have been fulfilled. This way, the analysis can be carried out synchronized with
rotation speed or shocks can be evaluated purposefully.
Use the VM-SCOPE as trigger source if you also want to watch the respective time signal immediately.
Trigger on / off
Enables / disables the trigger function.
Trigger source
analog All channels of the instrument can be selected. If the
signal in time domain exceeds the trigger level, the
trigger is initiated.
digital All digital inputs of the M302/M312 devices with
licenses for VM-FFT are available as trigger source.
This way, several VM-FFT channels can be fed
from the same digital input. It allows for instance
triggering synchronized with rotation speed in
several VM-FFT. The trigger is initiated if the value
switches from 0 to 1.
Trigger mode
Trigger repeatedly
Single shot
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Trigger
After a triggered FFT, the trigger is ready again. If the trigger
condition is met again, a new FFT will be carried out.
After having carried out a triggered FFT, the VM-FFT stops.
VibroMetra Manual
Pretrigger and posttrigger
The beginning of the time frame to be analyzed can be shifted
with regard to the start of the trigger. A pretrigger of 0 means that
the start of the trigger and the beginning of the time frame to be
analyzed coincide. Accordingly, the beginning of the time frame is
before the start of the tigger when entering a value >0.
Trigger level
When selecting an analog trigger source, the level of the measurand in time
domain is displayed in a bar graph. The measurand is bandpass filtered with
the frequency limits entered in the FFT settings and displayed as absolute
peak value.
When selecting a digital trigger source, a colored field shows the current
digital level.
• white:
level = 0
• black:
level = 1
Trigger
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FFT Settings
You can configure FFT parameters manually in all FFT modes except the automatic mode. The FFT control
panel is composed of three areas:
• Signal configuration in time domain (previous to FFT)
• Signal configuration in frequency domain (after FFT)
• Process data (shows how the analysis is working internally)
Time window
The signal in time domain is divided into fixed time segments. Such a segment is transformed into
the frequency range. The longer the time segment, the finer the resolution in frequency domain.
VM-FFT always uses real measurement data and does not artificially extend with zeros (Zero pad).
Windowing function
An FFT is exact for discrete frequencies only. Usually, the frequencies in the measurement signal
do not correspond to these discrete frequencies. As a result, there is so called leakage. To
extenuate this effect, windowing functions are used. Common windowing functions are:
Rectangle For analyzing shocks
Hann
For analyzing frequencies
Flattop
For analyzing magnitudes
Note: The windowing function "Hann" is also known as "Hanning". Actually it has been named after
the mathematician Julius von Hann, so that "Hann" is the correct name.
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Overlapping
The FFT can take over the different time segments successively without interruption or with an
overlap. The percentage Overlapping indicates how much two successive time segments overlap.
The more the time segments overlap, the more FFTs are generated in the same time - without a
decrease in frequency resolution. Thus it is easier to monitor dynamic processes, for instance the
start of an engine.
Spectral statistics
Several frequency analyses can be combined mathematically, which makes it easier, for instance,
to distinguish stationary from random vibrations.
Statistics can be either carried out infinitely for the whole switch-on time or for an adjustable
number of analyses. In the statistics, the frequency values of several analyses are combined. Three
methods are available:
Mean
The magnitudes are averaged arithmetically.
Square mean The magnitudes are RMS averaged.
Maximum
Maximum values are formed.
For certain statistical methods, names have been established. For instance, the permanent forming
of maximum values corresponds to the function peak hold.
Frequency range to be analyzed
You can enter a frequency range for the analysis. The measurement
chart will only show values from within this range. The FFT can be
carried out with a lower CPU load when entering a lower frequency
range. Furthermore, the frequency range is used as a parameter for the
bandpass filter of analog trigger sources.
FFT process data
In this area, you can read of internal parameters of
the FFT which result from the selected settings. This
process data is for information only.
FFT Settings
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Bearing diagnosis
Bearing diagnosis uses envelope analysis to display damages. Suitable damage frequencies for the type
of bearing are displayed in the measurement chart and thus allow to allocate displayed magnitudes to the
damaged component.
Menu tabs
The following submenus are available:
Settings
Parameters of envelope analysis and source for rotation speed
Marker
Setting and display of markers for damage frequencies
Calculate
Calculation of damage frequencies using the dimensions of the bearing
frequencies
Table of
Storage for damage frequencies of bearings that are frequently used
bearings
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Signal settings
Band pass filter
The vibrations caused by damages on bearings occur at high frequencies. Low frequency effects,
e.g. unbalance, are suppressed. The first value of the bandpass filter is a high pass value which
suppresses these low frequency parts.
The upper band limit allows for instance to suppress the resonant frequency of the sensor. However, it
is often taken into consideration because the sensor is particularly sensitive to bearing damages at this
frequency.
Source for rotation speed
For allocating damage characteristics, it is essential to know
the exact rotational frequency.
• It is especially comfortable to use an rpm sensor, which
moves the damage markers in real-time. Select the option
Measurement if you use such an rpm sensor.
• If the rotation speed is known and constant, you can do
without measuring the rotational frequency. In this case, it
is possible to enter the rotation speed manually.
Signal settings
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Markers
Markers help to detect particular bearing faults from the spectral diagram.
Diagram with markers
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In the spectral diagram the active markers are displayed at the positions which are set by the
rotational frequency factor and the current rotational frequency. The abbreviations for the bearing
components are completed by names for harmonics and side bands.
•
•
•
•
•
•
•
•
•
x2: Harmonic with double fundamental frequency
x3: Harmonic with triple fundamental frequency
...
SB+1: first side band on the right
SB-1: first side band on the left
SB+2: second side band on the right
SB-2: second side band on the left
...
Marker settings
The marker settings can be adjusted separately for each component of the bearing. The columns
feature the following settings:
Component This column lists up the bearing components. It cannot be changed.
Short
An abbreviation for the bearing component.
x fn
Rotational frequency factor. The damage frequency is specified as a factor to the
rotation speed. This way, the damage frequency is characterized correctly for each
rotation speed.
on
Activates (resp. deactivates) the marker in the measurement chart.
Hrm.
Number of harmonics to be indicated as a marker in the measurement chart.
Markers
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Number of side bands to be indicated in the measurement chart. Side bands can only
be activated for components which technically can possess side bands.
FG
Foreground color. The text in the markers will be written in this color.
BG
Background color of the markers.
Navigation 3 navigation buttons.
SB
Navigation
By means of the navigation buttons you can quickly select the magnitudes of the envelope analysis.
When clicking the cross hairs, VM-FFT directly zooms in on the damage frequency of the
respective bearing component.
By means of the arrows, the measurement chart is set to the previous resp. next
harmonic.
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Calculation of damage frequencies
If you do not know the damage frequencies, but the geometric dimensions of the bearing, you can calculate the
damage frequencies for the bearing at the push of a button.
Operation mode
Different damage frequencies are calculated depending on whether inner or outer race rotate
respectively are fixed. Calculation is integrated for both operation modes.
Inputs for geometric data
You can either take over geometric data from the manufacturer's instructions or measure them at the
bearing.
Calculation
By pushing the calculation button damage frequencies are calculated and taken over into the marker
table as well.
Calculation of damage frequencies
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Bearing table
You can save damage frequencies for the bearings you use most in the table of bearings. You can enter values
from the manufacturers' instructions here. Data can be acquired from the technical service or online, e.g. http://
medias.schaeffler.de/medias/en. Furthermore, numerous series will be available for import within VibroMetra.
The table of bearings is centrally available for all VM-FFT windows on one computer. If you want to take over
the table of bearing to other computers as well, just copy it. You find it here: <VibroMetra folder>\1.8.0\Config
\MyBearings.txt.
New bearing
Click to create a new entry.
Bearing table
The table of bearing contains the name of the bearing and the respective damage frequencies (as
multiples of the rotation speed). By pushing the button
, you take over the bearing into the table of
markers. The table of bearings can contain up to 100 entries.
By clicking right on a row, you open a context menu which offers the deletion of a row.
Save bearing
This button saves the table at a fixed location:
[VibroMetra folder]\1.8.0\Config\MyBearings.txt.
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Bearing table
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Bearing table
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Display of traces
Settings for Y axis
These settings change vertical scaling and arrangement of
traces in the diagram.
Shift all traces
Shifts all traces together into the desired direction.
Settings for frequency axis
In this area, you can adjust all settings which influence the
measurement curves in horizontal direction, i.e. in direction of
the frequency axis.
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Y axis settings
Split the diagram
In principle, an FFT provides magnitude and phase. Both can be displayed in the measurement chart.
You can select whether one of them is to be shown mainly (using more space) or only.
In some FFT or statistics modes, phase values do not have any technical significance. In this case,
only magnitudes will be displayed.
Grid density
If you activate this checkbox, VM-FFT will show grid lines at all graduation marks
of the Y-axis.
Permanent autoscaling
If you activate this checkbox, VM-FFT will rescale the Y-axes each time the
measurement chart is refreshed, using the last scale mode.
Step size
The step size (shown in scale lengths), by which measurement curves and scale are
shifted during a movement. For instance, 10% means that the measurement curves
are moved by 1/10 of the Y-axis.
Scaling modes
There are four scale modes:
•
•
•
•
All curves are maximized.
Same scale for all curves.
All curves are maximized and stacked with their own area.
All curves use the same scale, they are stacked with their own
area.
Y axis settings
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Expand / compress curves
These buttons expand or compress all measurement curves in Y direction.
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Frequency axis settings
Unit
Switch between Hz and 1/min.
Grid density
If you activate this checkbox, the VM-FFT will show grid lines at all graduation
marks of the frequency axis.
Permanent autoscaling
If you activate this checkbox, VM-FFT will scale the frequency axis permanently in
a way that all lines with more than 5% of the highest magnitude are visible.
Step size
The step size (shown in scale lengths) by which measurement curves and scale are
shifted during a movement. For instance, 10% means that the measurement curves
are moved by 1/10 of the frequency axis.
Automatic scaling
This button scales the frequency axis in a way that the signal is
displayed with three periods of its main frequency.
Compress / expand curve
These buttons compress or expand the measurement curve.
Frequency axis settings
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List of magnitudes
If you activate the list of magnitudes, the VM-FFT detects the magnitudes from the frequency analyze and lists
them up. Optionally, it also displays the measured values in the measurement chart.
Menu tabs
By these tabs you can switch between setting options for the list of magnitudes and the presentation of
the results. The appearance changes depending on the selected operation mode.
•
•
•
•
Settings in the "normal" operation mode
List of results in the "normal" operation mode
Settings in the "Half-width" operation mode
List of results in the "Half-width" operation mode
Operation mode
Three operation modes are available in the list of magnitudes:
• switched The list of magnitudes is inactive.
off
• normal
Magnitudes and their respective frequencies are detected.
• Half-width Magnitudes and their respective frequencies are detected, half-width and attenuation
are identified.
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Settings in operation mode "normal"
Chart marks
The found magnitudes can be marked in the measurement chart.
You can select whether frequency and/or magnitude values are
displayed numerically in the mark.
Search parameter
The search parameters define whether only
the highest (and thus few) magnitudes or many
magnitudes are to be found.
• Peak density determines the number of found
magnitudes. The more you move the controller to
the right side, the more magnitudes will be found.
• Ignore noise carpet determines which level is to
be ignored as noise carpet during the finding of
magnitudes. The more you move the controller
to the right, the more is ignored and fewer
magnitudes will be found.
Settings in operation mode "normal"
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Settings in operation mode "normal"
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Results in operation mode "normal"
List of results
In the list of results, frequency and
magnitude are indicated for each channel of
the instrument.
By clicking on the head of a column, the
data is sorted. By clicking on the head of
the column again, the sorting direction is
reversed.
When moving the mouse pointer to an entry,
this entry is shown in inverted colors. By
clicking on the entry, the measurement chart
automatically zooms in on the frequency of
this entry.
Copy
Copies the list of results to the clipboard (in text format).
Results in operation mode "normal"
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Settings in operation mode "Half-width"
Chart marks
The found magnitudes can be marked in the measurement chart. You
can select whether frequency and/or magnitude values are displayed
numerically in the mark. Furthermore, the half-width can be marked
optically.
Linear interpolation
Frequency analyses by FFT show discrete frequencies. In order to make it easier to identify the halfwidth, VM-FFT can interpolate linearly among these frequencies.
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Settings in operation mode "Half-width"
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Ignore noise carpet
Ignore noise carpet determines which level is to be ignored as
noise carpet during the finding of magnitudes. The more you
move the controller to the right, the more is ignored and fewer
magnitudes will be found.
Settings in operation mode "Half-width"
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Results in operation mode "Half-width"
Copy
Copies the list of results to the clipboard (in text format).
Result list
In the list of results, the following values are indicated for each channel of the instrument:
•
•
•
•
Frequency
Magnitude
Half-width
Attenuation
By clicking on the head of a column, the data is sorted. By clicking on the head of the column again,
the sorting direction is reversed.
When moving the mouse pointer to an entry, this entry is shown in inverted colors. By clicking on the
entry, the measurement chart automatically zooms in on the frequency of this entry.
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Results in operation mode "Half-width"
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Limits
You can set up a frequency-selective limit curve for the analyzed data. On the one hand, it allows a quick
optical check with regard to exceedance. On the other hand, it can be used for automated annunciations as
well.
The limit curve allows to set up arbitrary linear segments, also with gaps.
Switch on
Activates the limit function.
Announce at limit crossing
If this checkbox is activated, annunciators will be activated in case of exceedance of
the limit curve.
Table with corner values for the limit curve
Limits
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In this table, you can set up the limit curve point by point. The table contains the columns From and
To. You can only change the coordinates in column From: Click right on a field and enter the value.
In the last column you can select whether the point is to be drawn or not. This way, you can add
gaps to the limit curve.
By clicking right on a row, you open a context menu which offers the deletion of a row.
Add a new point
This button creates a new point in the table. The new point takes over the coordinates of the
previous point. You can enter new coordinates.
Save curve
This button saves the limit curve in a file.
Open curve
This button loads a limit curve from a file.
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Cursors
You can activate 2 cursors and move them on the frequency axis. The measured values at the marked
frequency are displayed.
Cursor on / off
Activates the cusror function
Cursor data
Frequency and magnitude at the cursor
position.
Shift cursor
Shift the cursor in the direction of the time axis. Shifting is also possible by
dragging the cursor line directly.
Automatic display of measured values at the cursor position
If you activate the automatic opening of the cursor control panel, the measured values at the cursor
position are displayed immediately in case of cursor movement.
Difference between cursors
Cursors
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Shows the difference of magnitude and frequency between the two
cursors.
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Data export
The measurement data from VM-FFT can be exported easily. The export is started by pushing the export
button.
Copy to clipboard
Selects the Copy function.
Save to file
Selects the Save function.
File name
You can directly enter a file name for the data to be saved. The button (...) opens a dialog which
also allows to enter a file name. Additionally, you can include placeholders in the filename which are
filled when the data is saved.
Saving mode
Two modes are available:
• Manually Data is saved when clicking the save button.
• PeriodicallyData is saved in time intervals.
File format
Data export
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The following file formats are available:
• Bitmap
raster graphics file format
• PNG
• Enhanced
Metafile
• Text
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Data export
raster graphics file format, less than 10 % of bitmap file
size without loss of quality
Windows enhanced metafile format, allow later changes
of characters
data is saved in a text table format including header
which allows later processing by table calculation
software
VibroMetra Manual
Report
Here the settings are made for printing reports including text information, diagrams, logos etc. After designing
the report layout you may save these settings.
Configure reports
In this tree view you find the available
report templates. Some sample reports
are provided. You may adapt them to your
needs.
Printer setup
Opens the printer configuration menu.
Select report template
You can select one of the report templates for printing.
Print report
Report
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
List of annunciators
Shows a list of available and used
annunciators.
Annunciator management can be
found in VibroMetra Online.
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VM-TRACK (+)
The typical application of VM-TRACK is finding resonances and the rotation speeds when they occur. For this
purpose rotation is started up to the nominal rotation speed. During this startup process VM-TRACK measures
magnitude and phase of the vibration signal at the rotation frequency or its multiples. The same measurement
can also be performed during coast-down. From the measured diagram you can quickly determine resonances.
A special feature of VM-TRACK is filtering at fractional parts of rotation frequency like, for example 12 : 27. This
enables the analysis of gears by entering the teeth ratios.
In addition to measurements at multiples or fractions of the rotation frequency VM-TRACK also allows
measurements within a frequency band. This can be useful, for example, to measure vibration severity from 10
to 1000 Hz to ISO 10816 against rotation speed.
VM-TRACK(+)
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Display area
Diagram
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Display area
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The curves show magnitude and phase of the vibration signal versus rotation speed or multiples of
rotation speed. Each curve has its own y-axis which can be scaled and scrolled independently.
Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and . Scrolling is carried out by clicking on the scroll arrows. The display control panel
contains more settings for the measurement chart.
By means of the mouse, the measurement chart can be zoomed or scrolled on the frequency axis.
The chart is scrolled with the left mouse button held down. By holding down the right mouse button,
you choose an area to be zoomed.
Traces
Different types of traces inform you about the reliability of the measured values. Each trace is
divided into several rotation speed sections. Revolutions belonging toe the same rotation speed are
averaged.
• Grey line
0 ..1 revolution measured in this section, less reliable
• Thin line in channel
color
2..9 revolutions measured in this section, acceptable reliability
• Bold line in channel
color
10 or more revolutions measured in this section, good reliability
Display area
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Satus bar
Shows the most important settings of the channel:
•
•
•
•
•
•
•
•
Sensor,
Measuring channel,
Measurand
Parameter
Gain
Low signal
Overload
Current rotation speed
Open settings
Opens and closes the setup menu.
Clone
Opens a new window with the same settings which can be modified.
Copy / Save
Copies the diagram data into the clipboard or saves it on hard disk. Different file formats can
be chosen.
Channels
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Increase or decrease the number of measuring channels (and curves). One to four channels are
possible.
Start/Stop
Starts and stops measurement.
Display area
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Setup area
Tabs for menus
he submenus are:
Signal:
Measuring
run
Display:
Cursors:
Data export:
Report:
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Setup area
Signal processing settings to condition the signal
Speed up / slow down settings
Settings for the display of measurement curves
Activation/deactivation of cursors, display of measurement data at the cursor position
Settings for destination, time and formats of data to be saved
Settings for report printing
VibroMetra Manual
Signal
Channel
All settings can be entered independently for each channel. For example, you may use
different filters. The number of tabs depends on the number of active channels.
Signal input
Selects the physical input and the gain of the USB device M302/M312.
Filter
The filter determines which frequencies are observed. It can be an order, i.e. a multiple of the
current rotation speed or a frequency range.
In Order analysis mode VM-TRACK selectively measures at
the rotation frequency or a multiple. Other frequencies are
suppressed.
Examples:
rotation
1:1
frequency
double rotation 2 : 1
frequency
half rotation
1:2
frequency
13/5 rotation
13 : 5
frequency
Signal
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In Overall value mode VM-TRACK measures RMS or peak values
within the entered filter range, independent of rotation speed.
There is no phase measurement in this mode.
Measurand
The connected sensor determines the available options. Velocity and displacement are calculated
from acceleration by integration (VM-TRACK+ only).
The unit should be selected in a way that the measuring value does not drop below 0.001
permanently.
Characteristic
In Order analysis mode the following choices are possible:
Peak value
True RMS
value
Peak-to-peak
value
The order value represents the magnitude of the filtered sine-wave signal.
The order value represents the root mean square value of the filtered sine-wave
signal.
The order value represents the double magnitude of the filtered sine-wave signal.
In Overall values mode you can choose between positive, negative and absolute peak value, peakto-peak value, RMS value and instantaneous value
Rotation source
Selects the signal source for rotation speed measurements at all channels.
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Measuring run
This panel controls the measuring procedure. The suggested ramp parameters can be used to control
drives. They also provide useful information about the suitability of the settings made.
Method
VM-TRACK measures at increasing or at decreasing rotation speeds. If both conditions occur you
may select which sections are to be displayed.
• free analysis
Measurement at rising and falling speeds
• Speed up analysis Measurement at rising speeds
• Coast down
analysis
Measurement at falling speeds
The mode can also be changed during measurement.
Rotation speed resolution
The rotation speed range is divided into discrete sections. This entry selecets the width of these
sections. The smaller the value the slower should be the change of rotation speed. Otherwise it
may happen that there are invalid sections with less than one revolution measured.
VM-TRACK shows different line types depending on the measured number of revolutions.
Speed range
Measuring run
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You can enter the expected minimum and maximum rotation speed here. These frequencies
determine the limits of the displayed frequency axis.
Suggestion for speed ramp
If you are able to control the machine's change of rotation speed you will find here some
information about the needed duration of measurement. The slider can be moved between shortest
measurement and highest precision.
• Shortes measurement assumes at the lowest speed only one revolution for measurement. There
will be more revolutions considered at higher speeds.
• Highest precision guarantees even at low speed that at least 10 revolutions are measured.
The data shown here is only a suggestion for your information. It does not influence measurement.
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Display of traces
Y axis settings
These settings change vertical scaling and arrangement of
traces in the diagram.
Shift all traces
Shifts all traces together into the desired direction.
Settings for frequency axis
In this area, you can adjust all settings which influence the
measurement curves in horizontal direction, i.e. in direction of
the frequency axis.
Display of traces
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Y axis settings
Split the diagram
VM-TRACK provides magnitude and phase. Both can be displayed in the measurement chart. You can
select whether one of them is to be shown mainly (using more space) or only.
In some FFT or statistics modes, phase values do not have any technical significance. In this case,
only magnitudes will be displayed.
Grid density
If you activate this checkbox, VM-TRACK will show grid lines at all graduation marks of
the Y-axis.
Permanent autoscaling
If you activate this checkbox, VM-FFT will rescale the Y-axes each time the
measurement chart is refreshed, using the last scaling mode.
Scaling mode
There are four scale modes:
•
•
•
•
All curves are maximized.
Same scale for all curves.
All curves are maximized and stacked with their own area.
All curves use the same scale, they are stacked with their own
area.
Step size
The step size (shown in scale lengths), by which measurement curves and scale are
shifted during a movement. For instance, 10% means that the measurement curves
are moved by 1/10 of the Y-axis.
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Compress / expand
These buttons expand or compress all measurement curves in Y direction.
Y axis settings
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Frequency axis settings
Time / rotation speed diagram
Switches on the display of a time / speed diagram. Switching it off allows a bigger area for the
magnitude / phase diagram.
Example: The speed diagram shows a speed up measurement with a short drive interruption at
9600 1/min after 1 hour.
Grid density
If you activate this checkbox, the VM-TRACK will show grid lines at all graduation
marks of the frequency axis.
Permanent autoscaling
The frequency axis is permanently adapted so that all lines with more than 5 %
of the highest magnitude are visible.
Automatic scaling
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Automatically scales the frequency axis.
Compress / expand
These buttons compress or expand the measurement curve.
Unit for frequency axis
Switch between Hz and 1/min.
Step size
The step size (shown in scale lengths) by which measurement curves
and scale are shifted during a movement. For instance, 10% means that
the measurement curves are moved by 1/10 of the frequency axis.
Frequency shift
If in order analysis mode different orders are examined you can choose here how the frequency
axis as scaled:
Measurements are displayed at their actual frequencies. This will help you to
detect resonance frequencies.
Measurements are scaled to order 1, i.e. rotation frequency. The diagram will
show you the reaction of the test object in different orders at the same speed.
Frequency axis settings
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Cursors
You can activate 2 cursors and move them on the frequency axis. The measured values at the marked
frequency are displayed.
Cursor on / off
Activates the cursor function
Cursor data
Frequency and magnitude at the cursor position.
Shift cursor
Shift the cursor in the direction of the time axis. Shifting is also possible by dragging the
cursor line directly.
Automatic display of measured values at the cursor position
If you activate the automatic opening of the cursor control panel, the measured values at the cursor
position are displayed immediately in case of cursor movement.
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Difference between cursors
Shows the difference of magnitude and frequency between the
two cursors.
Cursors
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Data export
The measurement data from VM-FFT can be exported easily. The export is started by pushing the export
button.
Copy to clipboard
Selects the Copy function.
Save to file
Selects the Save function.
File name
You can directly enter a file name for the data to be saved. The button (...) opens a dialog which
also allows to enter a file name. Additionally, you can include placeholders in the filename which are
filled when the data is saved.
Saving mode
Two modes are available:
• Manually Data is saved when clicking the save button.
• PeriodicallyData is saved in time intervals.
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File format
The following file formats are available:
• Bitmap
raster graphics file format
• PNG
• Enhanced
Metafile
• Text
raster graphics file format, less than 10 % of
bitmap file size without loss of quality
Windows enhanced metafile format, allow later
changes of characters
data is saved in a text table format including
header which allows later processing by table
calculation software
Data export
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Report
Here the settings are made for printing reports including text information, diagrams, logos etc. After designing
the report layout you may save these settings.
Configure reports
In this tree view you find the available report templates.
Some sample reports are provided. You may adapt
them to your needs.
Printer setup
Opens the printer configuration menu.
Select report template
You can select one of the report templates for printing.
Print report
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VM-BAL (+)
VM-BAL is intended for field balancing in one or two planes. Ideally, the rotor is balanced directly in its
regular operating condition.
VM-BAL safely guides the user through all steps of setup and operation. Operations and results are clearly
displayed as graphics.
Special features for high balancing efficiency are:
• To avoid erroneous balancing at rotation speeds near the rotor resonance VM-BAL provides instructions
for finding an optimum rotation speed after a first test run.
• VM-BAL calculates the optimum test mass.
•
VM-BAL (+)
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The test mass can be left at the rotor during balancing. VM-BAL will consider it in its calculations, if
desired.
• Drilling, milling, adding or removing mass, sliding blocks, set screws, etc. - VM-BAL offers 8 corrections
methods.
• Incomplete balancing sessions can be saved and reloaded to be continued later.
• Only a few mouse clicks are needed to produce a balancing report.
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Operation panels
Menu tabs
Settings
Balancing
Report
Tools
Settings to be made before starting the balancing process
The actual balancing process consisting of vibration measurement and mass
shifting
Printing balancing reports
Useful functions supporting the balancing process
Operation panels
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Settings
Submenus
Before balancing, it is recommended to check all settings of these submenus from the top to the bottom.
Scroll bar
Scroll up and down to open the submenus.
Clone
Opens a new window with the same settings which can be modified in a different
way.
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Confirm settings
Click this button when you have finished all settings. This is a precondition for balancing. After
pressing this button all settings will be crossed out and blocked until you press the Edit settings
button.
Settings
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Rotor list
All settings concerning the rotor may be saved in file. This will save time when the same machine or a similar
one are balanced again.
List of rotor files
The list shows all rotor files that have been saved. Click at a file name to put it into the input field.
Input field
Select either an existing file name from the list (see above) or type in a new file name.
Open rotor file
Opens the rotor file entered in the input filed and loads all data and settings.
Save rotor file
Saves a rotor file under the name entered in the input field .
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Delete rotor file
Deletes the file in the input field.
Rotor list
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Rotor data
These settings are important for specifying the rotor properties.
Number of planes
Factors for the decision between one or two plane
balancing:
• One-plane balancing saves time compared with two-plane
balancing.
• Two-plane balancing requires at least one additional
balancing run and mass shifting in both planes.
• One-plane balancing only compensates static unbalance.
• Two-plane balancing compensates static and couple
unbalances.
• Disk shaped rotors can be usually balanced in one plane.
• For longish rotors two-plane balancing is required in many
cases.
Balancing radius
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This is the radius at the rotor where mass shifting will be done.
It is not necessarily the outer rotor radius.
Simple balancing with the aim of reducing the unbalance mass with the methods of adding or
removing mass will also succeed without entering a balancing radius. For many other calculations,
however, the balancing radius is needed. Therefore entering a radius is recommended.
Use complete circumference
This selection allows balancing at any angle position of the rotor
circumference.
Use fixed positions
If the rotor only allows changes at a limited number of positions,
e.g. when balancing propellers or crankshafts, choose this option.
Number of fixed positions
You can enter here between 3 and 360 positions. VM-BAL assumes
that the fixed positions are evenly distributed in the same angles at the
rotor circumference.
Start angle
For efficient balancing the zero angle should correspond to the
angle of the rotation speed mark at the rotor. This will not always
be the case when balancing at fixed positions, e.g. in two-plane
balancing when there is an offset between the fixed positions of
both planes. You may enter here an angle offset.
Additional data
If rotor mass and rotation speed are known, it is recommended to enter them here. This data is not
mandatory for balancing but it helps to determine the right test mass and to calculate balancing quality
to ISO 1940.
Disable the checkboxes if the data is unknown.
Rotor data
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Balancing aim
Balancing can be performed with different aims. The purpose will always be to bring the unbalance under a
certain tolerance limit. It may also be necessary to create a determined unbalance.
Balancing aim
Balancing can be performed for different reasons, like reaching a
certain balancing quality or reducing vibration levels. Select the
desired aim here so that VM-BAL can present the results in the
appropriate way and compare them with suitable tolerance limits.
Once balancing has been started the balancing aim cannot be
changed anymore.
Tolerance
After selecting the balancing aim you enter here
the acceptable limit. VM-BAL will ask you to finish
balancing when the entered value is reached.
Target unbalance
A special feature of VM-BAL is the possibility of creating
a certain unbalance. This can be advantageous in
situations where the rotor is not completely assembled
in the moment of balancing. VM-BAL will take into
account that parts added later will be compensated.
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Unbalances added afterwards
Enter the unbalances to be mounted later for the calculation of target unbalance. Up to 9
unbalances can be entered with name, amount and angle. They will be considered if the respective
checkbox is enabled.
Balancing aim
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Vibration measurement
Initial unbalance is measured indirectly. A rotating unbalance generates a centrifugal force acting at the
bearings. This results in vibration which is measured. For each plane an accelerometer is mounted in radial
direction and connected to the inputs of the M302/M312 device.
Vibration measurand
Vibration can be displayed as acceleration, velocity or displacement.
Most common in the machine building industry is vibration velocity which
is also used in machine condition monitoring to ISO 10816.
Characteristic
RMS or peak values can be measured to characterize vibration.
Signal source
Selects the physical signal input for vibration of the USB device
M302/M312.
Gain
Selects the physical gain of the USB device M302/M312 for vibration. Auto ranging
must not be used for balancing.
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Rotation speed
Balancing is performed at constant rotation speed. VM-BAL uses the rotation speed signal from the
photoelectric reflex switch VM-PS which is connected to the digital input of the M302/M312. Alternatively
signals from rotor-specific sensors can be measured like, for example, the z signal of a rotary encoder.
Signal source
Default setting is the digital input of the M302/M312 device.
Maximum deviation
Constant speed is crucial for successful balancing. VMBAL monitors the stability of rotation speed to ensure that
balancing is performed within specified limits.
The allowable deviation will depend on the type of drive and
load variance. For a controlled drive with low load the preset
of 2 % can be higher than the actual variations. The situation
may be different for a combustion engine controlled by a foot
throttle.
Cycles for measurement run
Here you enter the number of revolutions used for vibration
measurement. The higher the number of revolutions the better VMBAL can distinguish unbalance from vibration of other sources.
Rotation speed
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Start speed
VM-BAL covers a very wide range of rotation frequencies from 6 to
100,000 rpm and higher.
For monitoring the stability at low speeds VM-BAL needs to
measure over a longer period which may take some time.
Operation can be sped up by entering a minimum rotation speed.
The entered value should be at least the nominal speed less the
expected tolerances.
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Measuring procedure
Improvement of unbalance calculation
After unbalance measurement VM-BAL will make suggestions for balancing and ask you whether
you have implemented these suggestions. Your answers will give VM-BAL the necessary information
about the current state of the rotor. By this means VM-BAL can use test runs as well as correction
runs to evaluate the remaining unbalance. This can be particularly useful when a large portion of the
unbalance has been compensated already and when the current vibration information is very different
from the initial test runs.
You can choose for each test run whether you want to use its data for calculation. This menu option
sets the default choice for balancing.
Switch option panels automatically
Balancing is performed in a given order of actions and measurements. If the check box is enabled
VM-BAL will automatically switch to the panel for the next step. You can always reset the results of the
last step manually. Alternatively you may deselect this option and switch manually to the next step.
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Polar graphics
Vibration and unbalance are displayed for both planes as polar graphics. The length of the pointer indicates the
amount and the angle the position. There are some options concerning the polar graphics display.
Position of zero angle
By mathematical definition zero position is on the right side of the circle. You may
change the zero position if desired.
Angle count direction
By definition angles are measured counterclockwise. This can be
changed to clockwise.
The setting only affects the diagram. The angles at the rotor are
always counted against the direction of rotation.
Fixed position counting
• Fixed positions (if selected in rotor settings) can be counted
starting at number zero or one.
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Presets for mass changes
If balancing is always performed in the same way you can enter here some presets. In conjunction with the rotor
list typical settings for the test mass and for mass changes can be entered here for each type of rotor. These
presets may be modified later during the actual balancing process.
Detailed descriptions are found in the sections
• Test mass
• Correction mass
Presets for mass changes
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Units
VM-BAL is capable of balancing tiny rotors with only 1 mg remaining unbalance but also rotors weighing some
tons.
The physical units can be adapted to the balancing application here.
Units of the same type can occur several times if they occur with different magnitudes. For example, the
quantity "mass" is listed as mass (of the rotor) and added mass.
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Balancing
After finishing the settings you may start balancing. The panel below lists each step with the relevant
information.
List of measuring runs
Balancing
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The table lists all balancing runs
belonging to the balancing session.
Some entries are divided into steps.
Click the respective run or step to
see the belonging settings.
The button Discard all runs and
restart opens a new balancing
session.
There are the following types of balancing runs:
• Pilot survey detects the optimum rotation speed for the rotor.
• Test runs determine the dynamical properties of the rotor.
• Verification runs suggest correction measures and show whether their application was
successful.
Side display
Shows compiled information about the
current run.
Main display
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Shows further detailed information.
Balancing
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Pilot survey
Balancing should be performed at rotation speeds where there are no resonances. This condition is checked
by the pilot run. To perform this test the rotor has to run through the relevant range of rotation speed. If there
is no way to control rotation speed you may also coast down rotation.
• For rotors running at constant speed the pilot survey issues warnings in case of expected problems.
• For rotors with variable speed the pilot run recommends optimum rotation speeds for balancing.
Selection of pilot survey
The pilot survey has two steps:
• Settings
• Measurement
Measurement can only be started
after finishing the settings.
Side display of pilot survey
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This area informs you about the next step to
do.
Pilot survey
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Settings
The only setting needed for the pilot survey is the rotation speed range used.
Settings selected
Click this entry to open the settings.
Rotation speed range
Enter the rotation speed range here in which you
intend to balance the rotor.
Recommended ramp duration
VM-BAL calculates the minimum time needed
for acceleration. The smaller the entered rotation
speed range and the minimum value the faster
rotation speed can be increased.
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Confirm button
Click this button to confirm the settings you have made. The settings will be locked by
horizontal lines and measurement is enabled.
Settings
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Measurement
The results of pilot survey are displayed in a diagram versus the specified speed range. Recommended
speeds are indicated in a list.
Measurement selected
Select measurement as the next step after
settings.
Side display
This area is similar in all steps of measurement. A description can be found here.
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Start / stop measurement
Current speed
Recommended speeds
This field shows recommended rotation speeds. The best values are found on the left side. Each entry has
the form Min..Nominal..Max
The nominal value is in the middle between minimum and maximum. It should be used preferably.
Diagram
The horizontal axis shows the entered rotation speed range. The blue line marks the recommended speed.
You can see from the diagram why this speed has been chosen:
1. Angle stability: Resonances result in changeable phase angles. There are three colored bars for angle
stability. The green bar indicates best values below +/- 5 %.
2. Dominant unbalance signal: Unbalance vibration is only one component in a mix of other frequencies.
The higher the difference between unbalance vibration and other vibration the better the chance of good
balancing results. A value of 100 % in the U/E diagram would mean that there is no other signal than
unbalance vibration.
Measurement
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Test runs
Unbalance is measured indirectly by the vibration which the rotator is generating by centrifugal force. The
magnitude of vibration does not only depend on the unbalance. It is also influenced by the stiffness of machine
parts and the foundation. A machine with flexible foundation will vibrate stronger than the same machine with
stiff foundation.
VM-BAL conducts test runs to evaluate the behavior of an unknown rotor. For one-plane balancing two test runs
are needed, for two-plane balancing there are three test runs.
• Test runs typically start with the "initial run". The rotor remains in unchanged condition and its vibration is
measured at constant speed.
• After this, the mass in plane A is changed and test run A is started.
• For two-plane balancing this procedure needs to be repeated for plane B.
The test runs are selected in the list of measuring runs. In the beginning there is only one entry of the initial run.
If the initial run was finished the next test run will be shown. You are guided through the process step by step.
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Initial run
Test runs start with the initial run. The rotor is left in its initial condition. Vibration is measured at constant speed.
Generally, a balancing run will always include the following steps:
1. Changing the mass
2. Measuring vibration
3. Decision based on the results
Since there is no mass change needed for initial runs, step 1 can be skipped and the procedure starts at step 2,
vibration measurement. There will be no information about unbalance yet after the initial run.
There is an information on the right side of the list which is explained here.
Initial run
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Vibration measurement
Vibration measurement in the initial run determines the magnitude of vibration caused by the unknown
unbalance.
The rotor has to run at constant speed.
Vibration measurement is followed by a test run for plane A starting with mass change.
Vibration measurement selected
Select Vibration measurement under Initial run in the list of measuring runs.
Side display
This section is explained here.
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Main display
This section is explained here.
Vibration measurement
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Test run plane A
The initial run is followed by the test run for the first plane.
• A change of mass is carried out and entered into VM-BAL.
• Rotation is started again and vibration measured at constant speed.
• Depending on the number of planes
• the result will be available for one-plane balancing
• test run B follows in case of two-plane balancing.
There is an information on the right side of the list which is explained here.
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Mass change
Mass change is carried out before vibration measurement.
The changes made need to be entered into VM-BAL. The software can also make suggestions for the test
mass.
Mass change selected
After finishing the initial run the first test run
is started with a mass change.
Side display
Mass change
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This section gives information about the next step
and quick access to the relevant settings.
Adding / removing mass
Select the intended way of changing mass.
Amount of test mass
Enter the mass you have removed or added.
Angle of test mass
Enter the angle position where you have added or removed
mass. Angle steps will be offered for balancing at fixed
positions.
All subsequently displayed angles will refer to this position. Preferably the test mass should be at
the same position as the zero angle of the reflex mark because
1. There is a visible mark at this angle position.
2. The angles of vibration measurement, unbalance display and mass changes refer to the same
coordinate system.
Mass after measurement
Normally the test mass will be removed after the test run. In some situations it may be desired to
leave the test mass at the rotor.
Suggestion
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The test mass is often chosen
arbitrarily, sometimes based on
experience. The purpose of adding
or removing some mass is changing
the dynamical behavior of the rotor to
a certain degree. Extreme vibration
needs to be avoided, too.
VM-BAL can make a suggestion for
the test mass under the following
preconditions:
•
•
•
•
Balancing radius and rotor mass have been entered.
The sensors for vibration and zero angle are in one line.
The recommended angle uses the reflex mark as reference.
The suggestion is only applicable for adding mass.
Accept suggestion
Click this button to transfer the suggested mass and angle into the input fields.
Confirm settings
Click this button to confirm your changes and proceed to vibration measurement.
The confirm button turns into an edit button. You can return to the mass edit
menu as long as vibration measurement has not been started yet.
Mass change
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Vibration measurement
Vibration measurement for plane A evaluates the effects of mass change. The rotor has to run at the same
constant speed as in the initial run.
Vibration measurement selected
Select under Test run plane A the step Vibration measurement.
Side display
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This section is explained here.
Main display
This section is explained here.
Vibration measurement
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Test run plane B
The Test run of plane A is followed by the test run for the second plane.
•
•
•
•
Firstly, mass changes at plane A are cancelled if this was chosen in test run A.
A change of mass is carried out at plane B and the change is entered into VM-BAL.
Rotation is started again and vibration measured at constant speed.
VM-BAL will now show the unbalance result.
There is an information on the right side of the list which is explained here.
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Test run plane B
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Mass change
Mass change in the second plane may include:
1. Returning the mass change of plane A.
2. Performing the mass change for plane B.
Mass change selected
Mass change
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If the test run for plane A has been completed
plane B test run will be displayed in case of
two-plane balancing. The first step is a mass
change.
Side display
This section shows information about the next
step and allows quick access to the relevant
settings.
Reversion of test mass / mass change
The mass change during test run B may include
1. the reversion of the mass change in plane A
2. changing the mass in plane B
Confirm settings
Click this button to confirm your changes and proceed to vibration measurement.
The confirm button turns into an edit button. You can return to the mass edit menu as long
as vibration measurement has not been started yet.
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Reversion of mass changes from test run A
You can decide yourself whether you want to keep mass changes of test run A or not.
Example: A mass was added for plane A. The initial intention was to remove this mass again. However,
vibration measurement after test run A indicates that vibration has been reduced by adding the test mass.
Therefore you might wish to keep the test mass.
The information on the right side of this panel shows you what has been done in test run A including the location
of the added mass.
Reversion of mass changes from test run A
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Vibration measurement
Vibration measurement for plane B evaluates the effects of mass change. The rotor has to run at the same
constant speed as in the initial run.
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Test mass for the current run
The settings are the same as in test run of plane A.
Test mass for the current run
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Monitoring of measuring results
Mass changes during the test runs need to cause significant changes of rotor vibrations. VM-BAL will
indicate problems by insufficient changes as shown below:
Warning
Reliable unbalance calculation cannot be performed if the results of the test runs are too similar.
Reason 1
A possible reason is that you might have forgotten to do the calculated mass changes of plane A or
plane B at the actual rotor. Click this button to discard the measuring run and to start a new one after
you have done the mass changes.
Reason 2
The test mass might have been too small. Use a test mass with higher weight.
Reason 3
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Vibrations of other sources with similar frequencies may interfere with the balancing process. You may
repeat the measurement with a higher number of revolutions.
Ignore
If none of the above reasons applies or no changes are possible you may skip this warning. Please
keep it in mind, however, for the evaluation of the balancing results.
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Verification runs
After you have got the unbalance result and decided to continue balancing, VM-BAL will start the verification
runs. They consist of the following steps:
1. Compensating the unbalance by a mass change.
2. Vibration measurement to determine the remaining unbalance
3. Decision about continuing balancing
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Mass change
The mass of the rotor is changed with the purpose of reducing its unbalance. VM-BAL offers suggestions for
suitable measures.
Mass change selected
After continuing balancing a verification run
is opened. The first step is a mass change.
Mass change
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Side display
Here you find information about the steps of
mass change to be done.
Main display
This panel allows
• the reversion of mass changes and
• the selection of balancing methods.
It also shows
• balancing suggestions and
• done corrections.
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Main display
This panel shows the corrections for one plane each. Suggestions are offered. You can enter your intended
correction measures and check their expected impacts.
Current plane
Switch to next plane
Only relevant for two-plane balancing
Steps for mass change
A mass change may include the following steps:
1. Reversion of mass changes from a previous balancing
run
2. Selecting a correction method
3. Performing the correction
Main display
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Reversion of mass changes from a previous run
This panel will open in locked condition. Click the edit button to unlock it.
A change of the reversion setting will also change the current unbalance result.
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Selecting correction methods
VM-BAL offers up to 8 correction methods. To unlock these settings click the edit button.
Correction methods
Click the edit button to unlock these settings. 8
correction methods are available:
1.
2.
3.
4.
5.
Adding mass
Removing mass
Radial drilling
Radial milling
Shifting fixed masses concentrically (sliding
block, swivel)
6. Shifting fixed masses radially towards the
center
7. Shifting fixed masses radially away from the
center
8. Mass list
Selecting correction methods
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Edit / Confirm
Click to enable the selection and setup of correction methods.
Click to confirm your settings and to lock the panel again.
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Adding mass
The most common way of unbalance compensation is adding a piece of mass opposite to the unbalance. VMBAL will calculate the amount of mass to be added and its angle position.
Mass limitation
Click this checkbox and enter a maximum possible correction mass if necessary. VM-BAL will consider
this in its calculations.
Maximum mass
Adding mass
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Removing mass
This method is used to remove material at the rotor side with the unbalance. The removed mass corresponds to
the measured unbalance. VM-BAL calculates the amount of mass and the angle position.
Mass limitation
Click this checkbox and enter a maximum value for the mass that can be removed if necessary. VMBAL will consider this in its calculations.
Maximum mass
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Drilling radially
Drilling is a method to remove mass on the side of the unbalance. VM-BAL calculates angle positions, depth
and number of drillings.
Maximum number of drillings
Up to 3 equal drillings are allowed to increase the amount of
removed material
Maximum depth
Drill diameter
Drill point angle
Material density
The density of the removed rotor material is needed to
calculate the removed mass.
Drilling radially
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Milling radially
Mass can be removed on the side of the unbalance by milling. VM-BAL calculates angle position and milling
depth.
The density of the removed rotor material is needed to calculate the removed mass.
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Shifting fixed masses concentrically
This method adds mass to the opposite of the unbalance. Two identical mass pieces are used which can be slid
concentrically around the rotation axis. In practice these can be sliding blocks or adjusting rings.
At the time of vibration measurement these masses are either removed or in neutral position (exactly opposite
each other) .
VM-BAL calculates the angles to be adjusted for both masses.
Shifting fixed masses concentrically
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Shifting fixed masses radially towards the center
This correction method is applied on the side of the unbalance. In practice set screws are used in radially drilled
tapped holes. This method is normally combined with fixed positions.
Fixed mass
Mass of the set screw.
Limit displacement
Limits the maximum distance for moving mass.
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Shifting fixed masses radially away from the center
This correction method is applied on the opposite of the unbalance. In practice set screws in radially drilled
tapped holes are used. This method is normally combined with fixed positions.
Fixed mass
Mass of the set screw.
Limit displacement
Limits the maximum distance for moving mass.
Shifting fixed masses radially away from the center
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Performing the correction
Correction is done interactively.
• VM-BAL offers a correction suggestion based on the measured unbalance result and the selected
correction method.
• You may modify these suggestions if desired.
• Enter your own corrections and you will see the effects immediately in the right section of the panel.
• Confirm if the correction was done actually at the rotor.
If all steps are finished in both planes you can proceed to the next step, a vibration measurement run.
Switch measures
Especially for balancing at fixed positions several
suggestions can be issued.
Use the buttons
and
to switch between them. The location of the currently selected
correction is indicated in the preview diagram by a bold framed number, for example
correction 2.
Suggestion
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Performing the correction
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VM-BAL issues a suggestion for
unbalance correction based on the
unbalance result and the selected
correction method.
Actual execution
Reasons for user inputs can be
• No correction can be made at the
calculated angle
• The calculated correction mass is not at
hand
etc.
The effects of the entered changes can be observed in the preview section.
This button resets the data entered by the user back to the system suggestions.
Preview
Performing the correction
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This section shows all correction
measures at their location.
Completed steps are indicated
green, unfinished steps are grey.
The preview also shows the
estimated unbalance pointer
after all correction steps will be
finished. A zero length pointer would
indicate complete correction of the
unbalance. Under the diagram you
see a calculation of the remaining
unbalance.
The length of the pointer will not
become zero in case of practical
balancing restrictions, like mass
limitations) or differences between
calculated suggestions and practical
measures. A tolerance circle
indicates whether the deviation
is acceptable or another way of
correction needs to be found.
The preview function can be
practical to test different correction
methods. Please note that the show
unbalance is an estimation only.
It cannot replace the subsequent
verification run.
Finished change
A finished correction is shown as a green box.
Unfinished change
An unfinished correction is shown as a grey box.
Confirm / Edit button
Click this button to confirm your entries.
The confirm button turns into an edit button. As long as the next balancing step is not
completed you may return to the edit mode.
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Vibration measurement
Vibration measurement as part of the verification run determines the amount of vibration after mass changes.
The rotor needs to run at constant speed.
After vibration measurement the remaining unbalance will be shown.
Vibration measurement
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General functions
This section explains functions used in different steps of the balancing process.
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Side display for vibration measurement
This panel appears each time vibration is measured.
Discard measurement
Click this button to discard the measurement.
After finishing vibration measurement VM-BAL will lock the start button so that no further measurement
can be started. Before repeating the measurement you need to discard the previous measurement.
After discarding the measurement the button changes its design:
Click again to restore the discarded measurement if
you have pressed the above button by mistake.
Side display for vibration measurement
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Side display for balancing runs
This panel is displayed in all balancing runs
Use measurement run for unbalance calculation
Two inputs are needed for unbalance calculation:
1. How was the rotor mass changed?
2. What was the resulting vibration?
For the first unbalance calculation VM-BAL uses the data from the test runs. However, VM-BAL can
also use verification runs in its calculations. This can be advantageous in the last balancing stage
when a large portion of the initial unbalance has been compensated already. In such cases balancing
would be based on vibration data measured under very different conditions. Instead of performing
new test runs VM-BAL may simply include verification run results in its calculation. This option can be
selected in the settings. Even if you have enabled the inclusion of verification runs you can still disable
this option individually for each run.
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Main vibration display for balancing run
Vibration measurement is performed in initial runs, test runs and verification runs. The measured vibration
values are intermediate results for the calculation of the final unbalance.
In the vibration diplay you find the button for starting a measurement. If rotation speed reaches the specified
range, vibration is measured and indicated. After measuring the specified number of revolutions VM-BAL
stops vibration measurement.
Depending on the selected mode VM-BAL will switch to the next step or wait for user control. You may
always return to the vibration display by selecting Vibration measurement in list of measuring runs.
Start/Stop
Starts and stops vibration measurement. VM-BAL will stop measurement automatically after raching the
entered number of revolutions. Hence a manual stop is usually not necessary.
Rotation speed monitoring
Rotation speed is monitored before and during vibration measurement.
In the first measuring run there is no nominal speed. In this case VM-BAL only checks whether rotation
speed is within the limits for a sufficiently long period. By this means VM-BAL can find a nominal speed
and starts vibration measurement. If the actual rotation speed differs from the nominal value VM-BAL will
discard the measured vibration values, find a new nominal speed and restart the measurement.
Main vibration display for balancing run
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In further measuring runs the nominal speed is fixed and vibration measurement is performed only at
rotation speeds within the specified limits.
Measuring values
For both planes amount and phase angle are indicated with the selected unit.
Diagram
The vibration value is shown as a pointer. The angle is marked according to the settings. Fixed
positions are indicated in the diagram.
Inspecting single measurements
This feature informs about deviation of the averaged single measurement.
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Main vibration display for balancing run
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High deviations can reduce the reliability
of the result. This can happen when the
unbalance becomes so low that there is
almost no remaining vibration. On the other
hand there can be fundamental problems,
for example strong interference by external
sources. The image shows a measurement of
good quality.
Status bar
The following properties of the measuring channel are shown:
•
•
•
•
Channel name,
Gain
Underload
Overload
Main vibration display for balancing run
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Unbalance result
After finishing the test runs you will get the first unbalance result. Further unbalance results are shown after
the test runs.
Unbalance result selected
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Unbalance result
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Good / Bad
Good / bad indication based on the tolerance limits.
Next step
You may decide what to do next. If the tolerance limit was exceeded VM-BAL will suggest to
continue balancing. However, you can always finish the procedure.
Edit / Confirm
Click this button to confirm your entries and proceed to the next run.
The confirm button turns into an edit button. You can return to the mass edit menu as long
as the next mass change has not been finished yet.
Result
The result is shown as magnitude and angle according to the balancing aim.
The angle corresponds to the measured unbalance. If the balancing aim was a reduction of
vibrations the angle may differ from the angle measured vibration display because of dynamic
rotor properties. To maintain concurrence with the angles used during unbalance correction the
unbalance angle is here also used for vibration indication.
Diagram
Unbalance result
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The diagram shows magnitude and
position of the unbalance with regard
to the tolerance limit indicated as a
green circle.
Further results
In addition the results according to the
balancing aim VM-BAL shows other
measurands providing information about the
balancing condition of the rotor.
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Unbalance result
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Mass list
A mass list is belongs to a correction method of adding mass pieces opposite to the unbalance.
In practice it will be often time-consuming to make an exact mass according to the balancing calculations. It
may be advantageous to use prefabricated mass pieces instead. These can be prepared in practical weight
steps, for example 1, 2 and 5.
VM-BAL can calculate the optimum combination of these masses using as few pieces as possible.
The mass list method can be particularly useful for fixed locations. Many rotors have on their face side
screws or threads in certain angles which can serve as fixed locations. Washers can be put under the screw
heads for balancing. These washers could be entered as a mass list. VM-BAL will ensure that only a limited
number of washers can be mounted and it can also consider the weight of the screws.
List
The list shows the entered mass pieces. All entries
can be directly edited. An entry can be deleted by
right mouse click.
New mass piece
Click to add a new mass piece.
Maximum mounting length
The number of mass pieces that can be attached at one
position will be usually limited, for example by the length
of the used screw. This entry is the total length of all all
Mass list
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stacked mass pieces. The individual lengths of the mass
pieces is found in the mass list.
Mass of mounting part
The part used for attaching the mass pieces, for example
a screw, will also contribute a mass. Enter zero if this part
was already attached to the rotor at the time of vibration
measurement. If the mounting part is attached only in
combination with a mass piece, enter here its weight.
Open / save list
A mass list can be saved and loaded.
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Mass list
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Report printing
This panel includes functions for printing a balancing report. Elements like texts, logos and variables can be
combined to report templates.
Configure reports
The report templates can be found
in this tree structure. One report
example is pre-configured. User
templates can be configured or
loaded.
Report template
Select one of the saved report templates.
Printer setup
Report printing
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This button opens a dialog for printer selection and
configuration.
Print report
Prints the report.
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Tools
The following tools facilitate the balancing process:
• Summarize balancing measures
• Balancing history
Tools
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Summarizing balancing measures
In practical unbalancing it may occur that over a longer period several correction masses accumulate at the
rotor.
If, for example, a mass is added each time, there will be a number of masses around the rotor after some
balancing periods.
One could attempt to remove the old masses completely before balancing. However, this could lead to
unexpected unbalance with the risk of high vibrations.
This tool of VM-BAL allows the reduction of several old masses to one or two pieces by calculation. This will
provide space for further balancing.
Summarizing masses can only be done before or after balancing. For summarizing masses before balancing
the input rotor data is needed.
Current plane
Switch to other plane
Only for two-plane balancing
Summarization steps
•
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Summarizing balancing measures
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Summarization starts with the reversal of earlier
corrections.
• Then you choose the method for the summarized
correction.
• The last step is the new correction
Summarizing balancing measures
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Reversion of earlier corrections
A number of corrections can be reversed in order to summarize them into one or a few new corrections.
You can reverse
• the existing corrections of earlier balancing sessions
• the corrections of a balancing session that was just finished
Choose correction
Available options are
• Current balance: Reverses the corrections of a balancing session that was just finished . This option
is only available if a balancing session was just finished and is still in the buffer.
• Old balancing: Reverses the existing corrections of earlier balancing sessions
Unbalance caused by removing
Here you see the resulting new unbalance if a
correction will be removed.
Confirm
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Reversion of earlier corrections
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Click to confirm your entries and to start summarization.
Reversion of earlier corrections
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Aktuellen Ausgleich zurücknehmen
Mit der Zusammenfassung nach einem gerade stattgefundenen Auswuchtvorgang können die alle
erfolgten Einzelmaßnahmen zu wenigen Maßnahmen zusammengefasst werden. Der VM-BAL hat alle
Masseänderungen während des Auswuchtvorgangs registriert und listet sie wieder auf. Dadurch muss nichts
weiter ausgemessen werden.
Befanden sich noch Ausgleichsmaßnahmen aus vorherigen Auswuchtvorgängen am Rotor, können auch diese
in die Zusammenfassung einbezogen werden.
Entscheidung zur Rücknahme
Sollen die Maßnahmen aus dem aktuellen Auswuchtvorgang
in die Zusammenfassung einfließen ist die Option werden
zurückgenommen zu wählen.
Liste aller aktuell durchgeführter Maßnahme
Wurde sich für die Rücknahme der Maßnahmen aus
dem aktuellen Auswuchtvorgang entschieden, werden
alle erfolgten Maßnahmen aufgelistet, damit sie am
Rotor zurückgenommen werden können.
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Alten Ausgleich zurücknehmen
Die Rücknahme von Ausgleichsmaßnahmen ist auf die Entfernung von angesetzten Massen aus frühreren
Auswuchtvorgängen eingerichtet. Wird eine Masse demontiert, dann sind ihre Daten in der Liste der entfernten
Massestücke festzuhalten. Das ist die Winkelposition, an welcher die Masse montiert war und der Betrag der
Masse, welcher mittels Wägen ermittelt werden muss.
In jedem Fall ist darauf zu achten, dass die Massen an einem Auswuchtradius entfernt werden, welcher mit
dem eingegebenen übereinstimmt.
Entfernte Massestücke
Die Liste enthält die entfernten Massestücke. Alle
Daten können direkt in der Liste geändert werden.
Der Betrag der Masse wird mit einer Waage bestimmt.
Die Winkelposition wird vorteilhaft gegenüber der
Nullmarke abgenommen. Sie muss aber mit den
eingegebenen Winkeleinstellungen zusammenpassen,
wenn zusätzlich noch Maßnahmen aus einem eben
erfolgten Auswuchtlauf in die Zusammenfassung
einfließen.
Das Löschen einer Zeile oder der ganzen Tabelle wird
durch Anklicken mit der rechten Maustaste eingeleitet.
Weiteres entferntes Massestück eingeben
Legt eine neue Zeile in der Liste an.
Alten Ausgleich zurücknehmen
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Settings for summarization
For the summarized correction you can choose again
between the 8 correction methods offered by VM-BAL. The
settings to be entered are the same as in the balancing
process. Details are found here.
Reversion of an existing correction and summarization are
blocked until the settings have been made.
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Settings for summarization
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Summarization
The calculation of the summarized correction is done in the same way as in a balancing session. Details can be
found here.
Summarization
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Balancing history
This tool shows in a clear way the resulting unbalance vibrations after mass
changes for each balancing run. The vibration behavior is also shown a
graphics.
Diagram
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Balancing history
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The graphics shows magnitude and
angle of the measured vibration for each
balancing run. The abbreviations are
explained in the table below.
List of measuring runs
The table lists the balancing runs and shows for each one the mass changes and the resulting vibration.
Mass changes can be listed twice: as reversal of a previous correction (first entry) and as change from the
current run (second entry).
A mouse click into a row highlights the run in the diagram.
Separator
Use the mouse pointer to adapt the space for the diagrams.
Save / load history
VM-BAL can save balancing sessions including measuring data and settings.
• This feature can be used to interrupt a balancing session and to continue it later at the same
point.
• It is also useful to archive balancing sessions and to reuse the information for later balancing
sessions.
•
Balancing history
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The rotor dynamics data obtained in the test runs can be saved. A future balancing session can
load this data and skip the test runs.
• Saved history files can be sent by e-mail in order to consult specialists in complicated situations.
These files can be opened and inspected in the VibroMetra Simulator.
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VM-BODY (+)
Occupational medicine
VM-BODY is applied for measuring human whole-body vibrations. Whole-body vibrations are caused by
vibrations or shocks which are transmitted by machines and vehicles in the workplace via seat or feet. If a
person is exposed to strong whole-body vibrations, safety and health are endangered and it is proven that
backache can be provoked or aggravated.
The "vibration directive” (directive 2002/44/EC) defines minimum requirements for the protection against
risks arising from whole-body vibrations.
Comfort
The measurement modes are based on the international standard ISO 2631. This standard not only covers
whole-body vibrations from a medical view, but also comfort assessments, e.g. for passengers in rail
vehicles (trains, underground railway, etc.). Thus, the comfort of a person during the transport can be
assessed objectively and according to an internationally accepted method.
Identify causes
As an extra measurement mode, the identification of transmission characteristics of seats (SEAT value) is
available in VM-BODY+. For each measurement, the VM-BODY+ version additionally offers an analysis in
frequency domain - for both, the unweighted signal and also with weighting filters. This way, causes (e.g.
structural ones) which contribute to the total vibration value most are detected quickly.
VM-BODY (+)
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Supported standards
VM-BODY offers 21 different measurement modes, based on
•
•
•
•
•
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2002/44/EC
ISO 2631-1:1997 (whole-body vibration) health assessment
ISO 2631-1:1997 (whole-body vibration) comfort assessment
ISO 2631-2:2003 (vibration in buildings) comfort assessment
ISO 2631-4:2001 (rail vehicles) comfort assessment
VM-BODY (+)
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Operation panels
Menu tabs
There are the following menus:
Measurement
Settings for the measurement
mode
Measurement
Execution of the measurement with indication of the measured values and
colored evaluation
Data storage
Storage for the completed measurements, detailed evaluation, printing a
report
Analysis
Frequency analysis for the detection of vibration causes
Operation panels
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Evaluation
Annunciator
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Operation panels
Automatic calculation sheet for the calculation of the daily vibration
exposure A(8) from several exposure segments
Signaling measured values and states for automated tests
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Measuring mode
Selection tree
Measuring mode
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In the selection tree, you find the setting
options and measurement modes in a clearly
arranged way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
By means of the buttons Show all
measurement modes and Show only
standards the selection tree can be closed or
opened completely.
Detailed settings
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
Sensor
Data storage
Reports
Measurement mode
Show all modes
This button opens all measurement modes in the selection tree.
Show only standards
selection tree.
This button only shows the top level of measurement modes in the
Clone
Opens a new window with the same settings which can be modified.
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Sensor settings
Sensor automatics
The measurements for whole-body vibrations are carried out in three axes. The allocation of the
axes plays an important role because they are weighted differently in some measurement modes.
The coordinate system refers to humans and is constant. The triaxial sensor has its own coordinate
system, which - depending on the sensor positioning - does not always correspond to the body's
coordinate system.
If you activate the automatic assignment of axes, VM-BODY correctly assigns the sensor axes to the
body's coordinate system. It also shows the correct sensor positioning in graphical drawings. If you
follow these graphical instructions you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires assigned
sensors. In the drop-down list, you can choose among all
sensors from the sensor management.
Sensor settings
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Data storage settings
Storage location
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be newly
generated in the displayed directory tree.
Save remarks
The measurement is monitored by VM-BODY.
For instance, it recognizes overload and low signal conditions. Such measurement remarks can be
automatically taken over into the remark field, which is available for every measurement. The remarks
are also taken over when a report is printed. Deselect this option if you do not wish to take over the
remarks.
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Report templates
Reports can be printed directly from VM-BODY. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in this tree structure.
One report example is pre-configured. More templates
can be configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
Report templates
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Configuration options for the measurement mode
Detailed name of the measurement mode
Details
For greater certainty concerning the selected
measurement mode, the following details are
displayed:
•
•
•
•
•
•
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Configuration options for the measurement mode
assessment type
position
measurement location
weighting filters for the different axes
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Aimed measuring time
The measurement is usually carried out for a limited time.
This duration can be entered here. However, it must not be below a certain minimum duration. By
means of the ISO button, the minimum duration conforming to the standard is entered .
Integration time
The validity ot the measurement is monitored by means of
a running RMS value.
You can enter the time frame (integration time) for forming this RMS value. By means of the ISO
button, the time is set conforming to the standard.
ISO button
By means of the ISO button you can set the following parameters conforming to the
standard:
• the minimum duration of a measurement
• the integration time of the running RMS value
Daily exposure time
To be able to show a colored evaluation already during the measurement, VM_BODY requires
a daily exposure time to which the measured values can be referred. The measurements are
usually not carried out for the actual exposure time, but for a representative duration and then the
measured values are extrapolated to the daily exposure time.
Delay to start
If you do not want the measurement to start right after pushing the start button, you can enter a
delay here.
Configuration options for the measurement mode
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Measurement
While measuring, VM-BODY displays the vibration total value and a colored assessment.
Measuring mode
Shows the selected mode.
Sensor placement
The image shows the body's coordinate
system and the position of the sensor with
regard to the person.
Start/Stop
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Starts and stops measurement. Starting is only possible when all settings in
Measurement mode menu have been completed.
Measuring values X/Y/Z
This field displays the vibration value (weighted RMS value) for the measurement axes.
Status bar 1
This status bar displays sensor and measuring channel.
Status bar 2
This status bar indicates:
•
•
•
•
•
Measurand
Characteristic
Gain
Underload
Overload
Status bar 3
This status bar displays weighting filters, crest factor and MTVV.
Crest factor and MTVV are two additional characteristics which always have to measured when
measuring human whole-body vibration conforming to the standard. For instance, they indicate
whether the measurement contained shocks. If they exceed a certain value, this information has
to occur in the measurement report. VM-BODY automatically monitors these characteristics in the
background. In case of exceedance, the respective characteristic field is displayed yellow. VMBODY is also able to take over limit exceedance to the measurement report automatically.
Status bar 4
This status bar displays k factor and VDV.
The Vibration Dose Value (VDV) is common especially in Great Britain and is classified as vibration
characteristic for whole-body vibrations there. It is formed automatically in VM-BODY.
Vibration total value
Measurement
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This can be, depending on the measuring mode, the vector sum or the maximum value of the 3 axis
values.
Duration of measurement
Remaining and elapsed measurement duration are displayed. The elapsed measurement duration
counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement duration
counts up to the aimed measuring time. The measurement is stopped when it reaches the aimed
measuring time.
Remark
This remarks inform about the current state.
Signal input
At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatic, VM-BODY selects the measuring channel automatically.
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Data storage
The results of all completed measurements are transferred to the data storage. All measurements are listed
up here incl. individual details. Data storages can be saved on a data medium and be read into VM-BODY
again. You can load several data storages to combine the contained measurements to one big data storage.
List of measurements
The results of all measurements are listed up here including the values of the single axes as well as
the vibration total value and its assessment. If irregularities were detected during the measurement,
the measurement is marked with an exclamation mark.
Details
Here you can find more details for each
measurement, including measured values,
additional characteristics and measurement
settings.
Data storage
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Remarks
You may add your own remarks for each
measurement.
Remarks concerning measurement
For a whole-body vibration measurement conforming to the standard, some additional
characteristics and measurement conditions have to be monitored during the measurement.
VM-BODY monitors these characteristics and conditions simultaneously to the measurement
and informs you about irregularities. Optionally, the remarks concerning the measurement can
automatically be taken over into "Your remarks" as well.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the measurement folder. The read
data is added to the data in data storage. This way, you can for instance combine measurements
from different days.
Save a file
This button saves the current data storage on a data medium.
Copy to ...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Recently used folders
This drop-down list shows the currently used data folders.
By clicking on an entry, the respective data folder is opened.
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Report
Allows the selection of a report template and the printing of the selected measurement.
Data storage
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Analysis
VM-BODY+ allows a frequency analysis for both, the unweighted and weighted vibration signal. This way
you can detect causes of too high vibration values.
Channel
Graphical analysis is provided for each measuring channel.
Info
Information concerning the storage location of the measured data for analysis etc.
Unweighted Signal
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The unweighted signal only contains the bandpass filter before it is transmitted to the frequency
analysis. The displayed vibration frequencies do not have a special weighting with regard to health,
comfort or perception of humans.
Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to the chart.
The detection algorithm can be configured.
Weighted Signal
The weighted signal contains the bandpass filter and weighting filter for human vibration before it is
transmitted to the frequency analysis. Thus, the displayed vibration frequencies are weighted with
regard to health, comfort or perception of humans.
Analysis
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Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to it to
graphic. The detection algorithm can be configured.
Controls for the list of magnitudes
These controls work like the ones in VM-FFT.
Copy
By means of this button the graphical presentation of both signals is copied to the clipboard.
Afterwards, the chart can be entered into a word processing or other programs.
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Automatic A(8) calculation sheet
If only one activity is carried out the whole day, the vibration total value corresponds to the daily vibration
exposure. But persons usually carry out many different activities during one working day. All these activities
have to be considered when calculating the daily vibration exposure. VM-BODY makes it absolutely easy to
calculate a complex daily vibration exposure:
1. The vibration total value is measured for each activity. It is not necessary to carry out the measurement
for the entire exposure duration per day. It is sufficient to measure for a minimum duration. You can
repeat the measurement for one activity several times to obtain a higher statistical certainty.
2. All measurements can be found in the data storage. And exactly these measurement are available in the
list of all measurements as well.
3. Now you simply drag the measurements into the calculation sheet by mouse, name the activities
(exposure segments) and enter the actual exposure duration.
Now you have finished the complex calculation of the daily vibration exposure with the A(8) value as result.
List of measurements
Automatic A(8) calculation sheet
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All measurements from the data storage are listed up here. If the single measurements have been
carried out on different days, they are read into the data storage successively and create a big data
storage for all measurements.
Calculation sheet
The single measurements are taken over to the calculation sheet by drag & drop.
• When the measurement is dropped to "daily exposure", a new exposure segment is created which
contains the dropped measurement. Now simply enter a name for the new exposure segment.
• If the measurement is dropped to an exposure segment, an average value is indicated. This
procedure is intended to increase the statistical certainty when several measurements were
carried out for one activity.
For every exposure segment, the actual exposure duration has to be entered in the column Duration.
The measurement is not usually carried out for the entire exposure duration, but for a shorter
duration which must not be below a certain minimum duration.
As a result, there is a daily vibration exposure A(8) calculated conforming to standards, which can be
printed in a detailed report at the push of button.
Report
The calculated daily vibration exposure can be printed in a report. You can choose the report
template.
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
List of annunciators
Shows a list of available and used annunciators.
Annunciator management can be found in
VibroMetra Online.
Annunciators
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VM-HAND (+)
Occupational medicine
VM-HAND is applied for measuring human hand-arm vibrations. Hand-arm vibrations are caused by vibrations
or shocks which are transmitted by tools, machines and vehicles in the workplace via inner hand and fingers. If
a person is exposed to strong hand-arm vibrations, safety and health are endangered and there is an increasing
risk of bone, joint and muscle diseases.
The "vibration directive” (directive 2002/44/EC) defines minimum requirements for the protection against risks
arising from hand-arm vibrations.
The measurements are based on the international standards ISO 5349 and ISO 8041.
Identify causes
VM-HAND+ offers as additional feature a frequency analysis of the weighted and unweighted vibration signal.
This can help to find the source of vibration and to change the design of the tested equipment accordingly.
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Operation panels
Menu tabs
Here you can enter the following submenus:
Measurement
mode
Measurement
Data storage
Analysis
Evaluation
Annunciator
Settings for measurement
Execution of the measurement with indication of the measured values and colored
evaluation
Memory for measuring values, evaluation and report generation
Frequency analysis for the detection of vibration sources
Calculation of the calculation of vibration exposure A(8) with different activities
Signaling measured values and states for automated tests
Operation panels
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Measuring mode
Selection tree
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In the selection tree, you find the setting
options and measurement modes in a
clearly arranged way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
By means of the buttons Show all
measurement modes and Show only
standards the selection tree can be closed
or opened completely.
Detailed settings
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
•
Sensor
Data storage
Evaluation
Reports
Measuring modes
All modes
Opens the complete selection tree.
Only standard modes
Only shows ISO 5349 settings.
Clone
Opens a new window with the same settings which can be modified.
Measuring mode
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Sensor settings
Sensor automatics
The measurements for hand-arm vibrations are carried out in three axes. The direction of the axes
plays an important role. The coordinate system refers to humans and is constant. The triaxial sensor
has its own coordinate system, which - depending on the sensor positioning - does not always
correspond to the hand's coordinate system.
If you activate the automatic assignment of axes, VM-HAND correctly assigns the sensor axes to the
body's coordinate system. It also shows the correct sensor positioning in graphical drawings. If you
follow these graphical instructions you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires assigned
sensors. In the drop-down list, you can choose among all
sensors from the sensor management.
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Data storage settings
Storage location
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be newly
generated in the displayed directory tree.
Save remarks
The measurement is monitored by VM-HAND.
For instance, it recognizes overload and low signal conditions. Such measurement remarks can be
automatically taken over into the remark field, which is available for every measurement. The remarks
are also taken over when a report is printed. Deselect this option if you do not wish to take over the
remarks.
Data storage settings
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Evaluation settings
Hand-arm vibration is usually not measured for a whole work shift but for representative intervals and works
steps. To improve accuracy measurements can be repeated several times for averaging. However, VM-HAND
can already display an estimated daily exposure value during measurement. The daily exposure time can be
entered.
Preliminary assessment
Allows evaluation and color change of the measuring result already during the measurement. This
feature is only available for triaxial measurements.
Daily exposure time
This is the exposure time per day by the currently measured activity needed for preliminary A(8)
calculation.
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Report templates
Reports can be printed directly from VM-HAND. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in this tree
structure. One report example is pre-configured. More
templates can be configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
Report templates
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Configuration options for the measuring mode
Details
For greater certainty concerning the selected
measurement mode, the following details are
displayed:
• evaluation type
• weighting filters for the different axes
• evaluation zones
Aimed measuring time
The measurement is usually carried out for a limited time.
This duration can be entered here. A minimum of 1 minute is recommended.
Start delay
If you do not want the measurement to start right after pushing the start button, you can enter a delay
here.
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Configuration options for the measuring mode
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Measurement
While measuring, VM-HAND displays the vibration total value and a colored assessment.
Measuring mode
Shows the selected mode
Sensor placement
The image shows the hand's coordinate
system and the position of the sensor with
regard to the hand. The assignment of sensor
axes can be changed .
Start/Stop
Starts and stops measurement. Starting is only possible when all settings in
Measurement mode menu have been completed.
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Measuring values X/Y/Z
This field displays the vibration value (weighted RMS value) for the measurement axes.
Status bar 1
Shows sensor and channel settings.
Status bar 2
This status bar indicates:
•
•
•
•
•
Measurand
Characteristic
Gain
Underload
Overload
Vibration total value
This is the vector sum of the 3 axis values.
Duration of measurement
Remaining and elapsed measurement time are displayed. The elapsed measurement duration
counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement duration
counts up to the aimed measuring time. The measurement is stopped when it reaches the aimed
measuring time.
Remark
This remarks inform about the current state.
Measurement
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Signal input
At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatics VM-HAND selects the measuring channel automatically.
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Data storage
The results of all completed measurements are transferred to the data storage. All measurements are listed
up here incl. individual details. Data storages can be saved on a data medium and be read into VM-HAND
again. You can load several data storages to combine the contained measurements to one big data storage.
List of messurements
The results of all measurements are listed up here including the values of the single axes as well as
the vibration total value and its assessment. If irregularities were detected during the measurement,
the measurement is marked with an exclamation mark.
Data storage
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Details
Here you can find more details for each
measurement, including measured values,
additional characteristics and measurement
settings.
Remarks
You may add your own remarks
for each measurement.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the measurement folder. The read
data is added to the data in data storage. This way, you can for instance combine measurements
from different days.
Save file
This button saves the current data storage on a data medium.
Save file as ...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Recently opened folders
This drop-down list shows the currently used data folders.
By clicking on an entry, the respective data folder is opened.
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Report
Allows the selection of a report template and the printing of the selected measurement.
Data storage
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Analysis
VM-HAND+ allows a frequency analysis for both, the unweighted and weighted vibration signal. This way
you can detect causes of too high vibration values.
Channel
Graphical analysis is provided for each measuring channel.
Info
Information concerning the storage location of the measured data for analysis etc.
Unweighted signal
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The unweighted signal only contains the bandpass filter before it is transmitted to the frequency
analysis. The displayed vibration frequencies do not have a special weighting with regard to health,
comfort or perception of humans.
Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to the chart.
The detection algorithm can be configured.
Weighted signal
The weighted signal contains the bandpass filter and weighting filter for human vibration before it is
transmitted to the frequency analysis. Thus, the displayed vibration frequencies are weighted with
reagrd to health, comfort or perception of humans.
Analysis
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Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to it to
graphic. The detection algorithm can be configured.
Controls for the list of magnitudes
These controls work like the ones in VM-FFT.
Copy
By means of this button the graphical presentation of both signals is copied to the clipboard.
Afterwards, the chart can be entered into a word processing or other programs.
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Automatic A(8) calculation sheet
If only one activity is carried out the whole day, the vibration total value corresponds to the daily vibration
exposure. But persons usually carry out many different activities during one working day. All these activities
have to be considered when calculating the daily vibration exposure. VM-HAND makes it absolutely easy to
calculate a complex daily vibration exposure:
1. The vibration total value is measured for each activity. It is not necessary to carry out the measurement
for the entire exposure duration per day. It is sufficient to measure for a minimum duration. You can
repeat the measurement for one activity several times to obtain a higher statistical certainty.
2. All measurements can be found in the data storage. And exactly these measurement are available in the
list of measurements as well.
3. Now you simply drag the measurements into the calculation sheet by mouse, name the activities
(exposure segments) and enter the actual exposure duration.
Now you have finished the complex calculation of the daily vibration exposure with the A(8) value as result.
List of measurements
Automatic A(8) calculation sheet
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All measurements from the data storage are listed up here. If the single measurements have been
carried out on different days, they are read into the data storage successively and create a big data
storage for all measurements.
Calculation sheet
The single measurements are taken over to the calculation sheet by drag & drop.
• When the measurement is dropped to "daily exposure", a new exposure segment is created which
contains the dropped measurement. Now simply enter a name for the new exposure segment.
• If the measurement is dropped to an exposure segment, an average value is indicated. This
procedure is intended to increase the statistical certainty when several measurements were
carried out for one activity.
For every exposure segment, the actual exposure duration has to be entered in the column Duration.
The measurement is not usually carried out for the entire exposure duration, but for a shorter
duration which must not be below a certain minimum duration.
As a result, there is a daily vibration exposure A(8) calculated conforming to standards, which can be
printed in a detailed report at the push of button.
Report
The calculated daily vibration exposure can be printed in a report. You can choose the report
template.
288
Automatic A(8) calculation sheet
VibroMetra Manual
Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
List of annunciators
Shows a list of available and used annunciators.
Annunciator management can be found in
VibroMetra Online.
Annunciators
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VM-SHIP (+)
Comfort and health assessment
VM-SHIP is used to measure human whole-body vibrations on ships. Whole-body vibrations are caused by
vibrations which are transmitted from drives and machines to a person that is standing, sitting or lying down. If
the crew is exposed to strong whole-body vibrations, safety and health are endangered. Too strong vibrations
also diminish the comfort of the passengers in their cabins.
The international standard ISO 6954 provides guide values for different classes of rooms. Exceeding these
guide values may cause complaints. For acceptance inspections, parties can use these guide values or agree
on their own values.
Identify causes
VM-SHIP+ additionally offers a frequency analysis of the weighted and unweighted vibration signal. This can
help to find the source of vibration.
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Operation panels
Menu tabs
Here you can switch between the different submenus of VM-SHIP:
Measurement
mode
Measurement
Data storage
Analysis
Annunciators
Measurement settings
Execution of the measurement with indication of the measured values and
colored evaluation
Memory for measured values, detailed evaluation and report generation
Frequency analysis for the detection of vibration sources
Signaling measured values and states for automated tests
Operation panels
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Measurement mode
Selection tree
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The selection tree shows setting options and
measurement modes in a clearly arranged
way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
By means of the buttons Show all
measurement modes and Show only
standards the selection tree can be closed
or opened completely.
Detail and configuration area
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
Sensor
Data storage
Report templates
Measurement modes
Show all modes
This button opens all measurement modes in the selection tree.
Show only standards
selection tree.
This button only shows the top level of measurement modes in the
Clone
This button generates an additional VM-SHIP window with the same
settings. The newly generated instrument can be configured freely.
Measurement mode
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Sensor settings
Sensor automatic
The measurements for whole-body vibrations are carried out in three axes. The allocation of the
axes plays an important role because they are weighted differently in some measurement modes.
The coordinate system refers to humans and is constant. The triaxial sensor has its own coordinate
system, which - depending on the sensor positioning - does not always correspond to the body's
coordinate system.
If you activate the automatic assignment of axes, VM-SHIP correctly assigns the sensor axes to the
body's coordinate system. It also shows the correct sensor positioning in graphical drawings. If you
follow these graphical instructions you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires assigned
sensors. In the drop-down list, you can choose among all
sensors from the sensor management.
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Data storage settings
Storage location
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be newly
generated in the displayed directory tree.
Save remarks
The measurement is monitored by VM-SHIP.
For instance, it recognizes overload and underload. Such measurement remarks can be automatically
taken over into the remark field, which is available for every measurement. The remarks are also taken
over when a report is printed. Deselect this option if you do not wish to take over the remarks.
Data storage settings
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Report templates
Reports can be printed directly in VM-SHIP. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in
this tree structure. One report example is
pre-configured. More templates can be
configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
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Configuration options for the measurement mode
Measurement mode details
For greater certainty concerning the selected
measurement mode, the following details are
displayed:
• evaluation type
• weighting filters for the different axes
• evaluation zones
Aimed measuring time
The measurement is usually carried out for a limited time.
This duration can be entered here. However, it must not be below a certain minimum duration. By
means of the ISO button, the minimum duration conforming to the standard is entered.
ISO button
Configuration options for the measurement mode
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By clicking the ISO button, the minimum measurement duration conforming to the standard is
entered as aimed measuring time.
Delay to start
If you do not want the measurement to start right after pushing the start button, you can enter a
delay here.
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Messung
While measuring, VM-SHIP displays the vibration total value and a colored assessment.
Measurement mode
The selected measurement mode is shown once again.
Sensor placement
The image shows the body's coordinate
system. The sensor has to be mounted in a
way that its axes are aligned accordingly resp.
you have to select the axis accordingly in the
sensor automatic.
Start/Stop
This button starts resp. stops the measurement.
Status bar 1
This status bar shows sensor and measuring channel.
Messung
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Measuring values X/Y/Z
The vibration value (weighted interval RMS value) for the axis is displayed here.
Status bar 2
•
•
•
•
•
•
•
The second status bar shows:
Measurand
Characteristic
Gain
Underload
Overload
Vibration total value
The maximum of the values from the single axes is displayed as vibration total value.
Measurement duration
VM-SHIP displays elapsed and remaining measurement duration. The elapsed measurement
duration counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement
duration counts up to the aimed measuring time. The measurement is stopped when it reaches the
aimed measuring time.
Remark
This remark informs about the current state.
Signal input
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At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatic VM-SHIP selects the measuring channel automatically.
Messung
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Data storage
The results of all completed measurements are transferred to the data storage. All measurements are listed
up here incl. individual details. Data storages can be saved on a data medium and be read into VM-SHIP
again. You can load several data storages to combine the contained measurements to one big data storage.
List of measurements
The results of all measurements are listed up here including the values of the single axes as well as
the vibration total value and its assessment. If irregularities were detected during the measurement,
the measurement is marked with an exclamation mark.
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Details
This field shows time and assessment of the
measurement.
Your remarks
You may add your own remarks for each
measurement.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the
measurement folder. The read data is added to the data in data
storage. This way, you can for instance combine measurements from
different days.
Save
This button saves the current data storage on a data medium.
Copy to...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Recently opened folders
This drop-down list shows the recently used data folders.
By clicking on an entry, the respective data folder is opened.
Data storage
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Report
Allows the selection of a report template and the printing of the selected measurement.
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Analysis
VM-SHIP+ allows a frequency analysis for both, the unweighted and weighted vibration signal. This way you
can detect causes of too high vibration values.
Channel selection
Graphical analysis is provided for each measuring channel.
Info
Information concerning the storage location of the measured data for analysis etc.
Unweighted signal
Analysis
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The unweighted signal only contains the bandpass filter before it is transmitted to the frequency
analysis. The displayed vibration frequencies do not have a special weighting with regard to health,
comfort or perception of humans.
Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to the chart.
The detection algorithm can be configured.
Weighted signal
The weighted signal contains the bandpass filter and weighting filter for human vibration before it is
transmitted to the frequency analysis. Thus, the displayed vibration frequencies are weighted with
regard to comfort/health of humans.
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Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to it to
graphic. The detection algorithm can be configured.
Controls for the list of magnitudes
These controls work like the ones in VM-FFT.
Copy
By means of this button the graphical presentation of both signals is copied to the clipboard.
Afterwards, the chart can be entered into a word processing or other programs.
Analysis
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
These annunciators are suitable e.g. for unattended permanent measurements. If a limit value was exceeded,
you are for instance informed by e-mail.
List of annunciators
This list shows all available and used annunciators.
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VM-WIND (+)
Measurement and evaluation of vibration in wind energy turbines
There is a neutral technical guideline for evaluating vibrations in wind energy turbines – VDI 3834.
Manufacturers, operators and insurers brought in their knowledge about vibrations on wind energy turbines.
There is a simple basic principle: Turbines with lower vibrations are better turbines. Too high vibrations stress
the components of wind energy turbines, particularly the drive train, in a way that these components often do
not reach the intended lifetime of 20 years.
The VDI guideline 3834 also offers guide values for evaluating vibrations on wind energy turbines. The
software module VM-WIND features automatic evaluation: The result is indicated in traffic light colors and
numerically. A report is printed at the push of a button.
Identify causes
VM-WIND+ additionally displays the vibration signals in time and frequency domain and thus allows to
identify causes of elevated values. However, it is an additional function and not required by the guideline VDI
3834.
For deeper analysis, further specialized software modules, e.g.
• VM-SCOPE
• VM-FFT
VM-WIND (+)
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• VM-TRACK
• VM-PLOT
are available. If vibrations are caused by an unbalance, use the VM-BAL to balance the rotating component.
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Operation panels
Menu tabs
Here you can switch between the different submenus:
Measurement
mode
Measurement
Data storage
Analysis
Annunciators
Measurement settings
Execution of the measurement with indication of the measured values and colored
evaluation
Memory for measured values, detailed evaluation and report generation
Frequency analysis for the detection of vibration sources
Signaling measured values and states for automated tests
Operation panels
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Measurement mode
Selection tree
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The selection tree shows setting options and
measurement modes in a clearly arranged
way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
When selecting combined measurement,
different measurement modes which have to
carried out on the same measuring point are
carried out simultaneously.
By means of the buttons Show all
measurement modes and Show only
standards the selection tree can be closed
or opened completely.
Detail and configuration area
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
Sensor
Data storage
Report templates
Measurement modes
Show all modes
This button opens all measurement modes in the selection tree.
Show only standards
selection tree.
This button only shows the top level of measurement modes in the
Clone
This button generates an additional VM-WIND window with the same
settings. The newly generated instrument can be configured freely.
Measurement mode
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Sensor settings
Sensor automatic
The measurements for vibrations in wind energy turbines are carried out in three axes. The direction
of the axes plays an important role. The coordinate system refers to the turbine and is constant. The
triaxial sensor has its own coordinate system, which - depending on the sensor positioning - does not
always correspond to the turbine's coordinate system.
If you activate the automatic assignment of axes, VM-WIND correctly assigns the sensor axes to the
turbine's coordinate system. It also shows the correct sensor positioning in graphical drawings. If you
follow these graphical instructions you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires
assigned sensors. In the drop-down list, you
can choose among all sensors from the sensor
management.
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Data storage settings
Storage location and directory name
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be newly
generated in the displayed directory tree.
Take over measurement remarks
The measurement is monitored by VM-WIND.
For instance, it assesses whether the measurement has been over- or underloaded. Such
measurement remarks can be automatically taken over into the remark field, which is available for
every measurement. The remarks are also taken over when a report is printed. Deselect this option if
you do not wish to take over the remarks.
Data storage settings
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Report templates
Reports can be printed directly in VM-WIND. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in this tree
structure. One report example is pre-configured. More
templates can be configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
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Configuration options for the measurement mode
Measurement mode / WT component
This field shows the selected measurement mode on the selected WT component.
Measurement site
This drop-down menu lists up all measurement sites for the respective WT component. Some
components are measured on several site, e.g. the generator.
Measurement mode details
For greater certainty concerning the selected
measurement mode, the following details are
displayed:
• weighted measurand
• unit
• frequency range
When selecting combined measurement, several measurement modes which have to carried out on
the same measuring point are carried out simultaneously. The measurement modes are numbered
consecutively.
Configuration options for the measurement mode
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Guide values
In case of combined measurements, several measurands are recorded simultaneously. They
have different guide values. By means of the tabs you can see the different guide values. The
numbers stand for the measurement modes described in the measurement mode details.
VDI guide values
Show the VDI 3834 guide values for the limits of the evaluation zones.
These zones have the following meaning:
Vibrations within this zone are generally regarded as so
III dangerous that damage to the WT and its components could
occur.
The WT and its measured components are not normally
regarded as being suitable for running in continuous operation.
Investigation is recommended to detect the causes of the
II
vibration excitations and decide whether design and operating
conditions of the equipment in question permit continuous
operation.
I
The WT and its measured components are regarded as suitable
for running in continuous operation with these vibratory stresses.
Special WT values
The contracting parties can agree to use other (higher or lower)
values for the zone limits of certain WTs. It is necessary that the
manufacturer gives reasons for this decision and - in case of
higher limit values - confirms that the WT or the component can
be operated with higher vibration values.
You can enter the changed values for the zone limits in the
respective fields. However, the VDI guide values remain visible
to make it possible to return to them.
Watch measurement site
By clicking on this tab, the measurement site for the selected measurement mode is shown
graphically.
Examples:
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Aimed measuring time
To obtain correct result, a certain minimum measurement duration must
be adhered. But the measurement duration can also be longer than this
minimum duration. If you changed the aimed measuring time, you can enter
the minimum measurement duration acc. to guideline by clicking the VDI
button.
VDI button
By clicking this button, you enter the minimum measurement duration acc. to the guideline
in the aimed measuring time.
Delay to start
Right after having been switched on, vibration measurement equipment usually shows transient
effects. During this time, the measurement signal is not yet displayed correctly. The start delay
makes it possible to react. The lower the lower limit frequency of the filter, the longer these transient
effects will last (90 s for measurements with a lower limit frequency of 0.1 Hz).
Configuration options for the measurement mode
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Measurement
While measuring, VM-WIND displays the vibration total value and a colored assignment to the evaluation
zones.
Measurement mode
The selected measurement mode is shown once again.
Measurement mode selection in case of combined measurements
When selecting combined measurement in the selection tree, different measurement modes
which have to carried out on the same measuring point are carried out simultaneously. They are
numbered consecutively.
During the the measurement, you can select which measurand with its values is to be displayed.
The other measurement modes are carried out in the background. You can watch their results in
status bar 3.
Sensor placement
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The image shows the coordinate system
for the wind energy turbine. The sensor has
to be mounted in a way that its axes are
aligned accordingly resp. you have to select
the axis accordingly in the sensor automatic.
A correct alignment is especially
advantageous for analyzing the causes, e.g.
for elevated vibration values.
Start/Stop
This button starts resp. stops the measurement.
Status bar 1
This status bar shows sensor and measuring channel.
Measuring values X/Y/Z
The vibration value (interval RMS value) for the axis is displayed here.
Status bar 2
• The second status bar
shows:
• Measurand
• Characteristic
• Gain
• Underload
• Overload
Status bar 3
This status bar shows additional values. If you carry out combined measurements, the measuring
value of the other measurand (which is measured in the background) is shown here.
Measurement
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Vibration total value
The maximum of the values from the single axes is displayed as vibration total value.
Measurement duration
VM-WIND displays elapsed and remaining measurement duration. The elapsed measurement
duration counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement
duration counts up to the aimed measuring time. The measurement is stopped when it reaches the
aimed measuring time.
Remark
This remark informs about the current state.
Signal input
At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatic VM-WIND selects the measuring channel automatically.
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Data storage
The results of all completed measurements are transferred to the data storage. All measurements are listed
up here incl. individual details. Data storages can be saved on a data medium and be read into VM-WIND
again. You can load several data storages to combine the contained measurements to one big data storage.
List of measurements
The results of all measurements are listed up here including the values of the single axes as well as
the vibration total value and its assessment. If irregularities were detected during the measurement,
the measurement is marked with an exclamation mark.
Details
Here you can find more details for each
measurement:
•
•
•
•
time
verbal assessment
limit values for all axes
measured values of all axes
Data storage
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Remarks
You may add your own remarks for
each measurement. If you activated the
respective option, measurement remarks are
automatically written into this field as well.
Measurement remarks
While measuring, VM-WIND simultaneously monitors additional characteristics and measurement
conditions to ensure a correct measurement and informs you about irregularities. Optionally, the
remarks concerning the measurement can automatically be taken over into the "Your remarks"-field
as well.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the measurement folder. The read
data is added to the data in data storage. This way, you can for instance combine measurements
from different days.
Save file
This button saves the current data storage on a data medium.
Copy to ...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Recently opened folders
This drop-down list shows the recently used data folders.
By clicking on an entry, the respective data folder is opened.
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Report
Allows the selection of a report template and the printing of the selected measurement.
Data storage
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Analysis
VM-WIND offers an analysis of vibration signals in time and frequency domain: Beyond the measurements
required by VDI 3834 you identify first causes for elevated vibration total values.
For deeper analysis, further specialized software modules are available, e.g.
•
•
•
•
VM-SCOPE
VM-FFT
VM-TRACK
VM-PLOT.
If vibrations are caused by an unbalance, use the VM-BAL to balance the rotating component.
Channel
Graphical analysis is provided for each measuring channel.
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Info
Information concerning the storage location of the measured data for analysis etc.
Time domain
The analysis in time domain shows e.g. whether the values vary a lot during the measurement or
whether the signal contains shocks.
Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the time axis. The chart is scrolled
with the left mouse button held down. By holding down the right mouse button, you choose an area
to be zoomed.
Frequency domain
Rotor frequency, generator frequency, natural frequency... By means of the frequency analysis you
can identify the components which are mainly responsible for the vibration total value.
Analysis
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Scaling (spreading and compressing the measurement curve) is carried out by means of the
buttons
and
. Scrolling is carried out by clicking on the scroll arrows.
Scaling with the mouse
By means of the mouse, the chart can be zoomed or scrolled on the frequency axis. The chart is
scrolled with the left mouse button held down. By holding down the right mouse button, you choose
an area to be zoomed.
List of magnitudes
The highest magnitudes are detected automatically and they are presented with frequency and
value. Frequency and value are indicated directly in the chart as well as in the list next to it to
graphic. The detection algorithm can be configured.
Controls for the list of magnitudes
These controls work like the ones in the InnoAnalyzer.
Copy
By means of this button the graphical presentation of both signals is copied to the clipboard.
Afterwards, the chart can be entered into a word processing or other programs.
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Annunciators
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment. Depending
on the used annunciator measuring data and other information can be transferred.
These annunciators are suitable e.g. for unattended permanent measurements. If a limit value was exceeded,
you are for instance informed by e-mail.
List of annunciators
This list shows all available and used annunciators.
Annunciators
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VM-PERS(+)
Vibrations in buildings - Effects on persons in buildings
Vibrations in buildings can be caused by
• Construction activities, like impact driving, falling material (e.g. demolition), explosions, pile driving by
vibration, compaction and tunnel drilling
• Rail and road traffic, uneven railway tracks and wheels, track switches, uneven pavements etc.
• Operation of machinery, like die cutters, forging presses, forging hammers, reciprocating saws
VM-PERS covers all field of application to DIN 4150-2:
•
•
•
•
•
•
short-time vibration
vibration by road traffic
vibration by underground rail traffic
vibration by public and non-public rail traffic
vibration by civil works (day and night)
other vibration sources
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Operation panels
Menu tabs
In VM-PERS you find the following menus:
Settings
Measurement
Settings for measurement
Execution of the measurement with indication of the measured values and colored
evaluation
Data storage
Memory for measuring values, evaluation and report generation
Vibration history Graphical display of the vibration trend
Analysis
Automated analysis of vibration maximum and main frequency
Annunciator
Signaling measured values and states for automated tests
Operation panels
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Settings
Selection tree
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In the selection tree, you find the setting
options and measurement modes in a clearly
arranged way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
By means of the buttons Show all
measurement modes and show only
standards the selection tree can be closed or
opened completely.
Detailed settings
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
•
Sensor
Data storage
Measuring location
Report
Measuring method
All modes
Opens the complete selection tree.
Only standard modes
Only shows DIN 4150-2 settings.
Clone
Opens a new window with the same settings which can be modified.
Settings
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Sensor settings
Sensor automatics
The measurements are carried out in three axes. The direction of the axes plays an important role. If
you activate the automatic assignment of axes, VM-PERS correctly assigns the sensor axes. It also
shows the correct sensor positioning in graphical drawings. If you follow these graphical instructions
you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires assigned
sensors. In the drop-down list, you can choose among all
sensors from the sensor management.
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Data storage settings
Storage location
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be
newly generated in the displayed directory tree.
Saving method
DIN 4150-2 demands measurements in intervals of 30 seconds. The menu is locked therefore.
Record time signal
Data storage settings
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For a deeper analysis or for conservation of evidence VM-PERS can save the signal in time
domain.
The following options are available for saving time signals
• never
• always
Save remarks
The measurement is monitored by VM-PERS.
For instance, it recognizes overload and low signal conditions. Such measurement remarks can
be automatically taken over into the remark field, which is available for every measurement. The
remarks are also taken over when a report is printed. Deselect this option if you do not wish to take
over the remarks.
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Measurement site
Description
You can enter here a short description of the measuring site. This is not needed for measurement but
the data is used in reports.
Measurement site
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Report templates
Reports can be printed directly from VM-PERS. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in this tree
structure. One report example is pre-configured. More
templates can be configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
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Measurement mode
On the left side of this window you find a selection tree with the different measuring modes. The right section
shows some detailed settings.
Guide values
These are the limit values to DIN 4150-2 for the selected mode.
Measuring method
Shows the selected mode.
Measuring time
Measurement mode
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The measuring time can be limited to switch off the instrument automatically after measurement.
Start delay
The time delay between pressing Start and the beginning of the actual measurement can be used
to suppress signal settling effects.
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Measurement
While measuring, VM-PERS displays the vibration total value and a colored assessment.
Measuring mode
The selected mode is shown here.
Sensor placement graphics
The X and Y axes should be oriented along
the walls of the building. Adjust the Z axis
vertically using the level and the adjustable
feet.
Start/Stop
Starts and stops measurement. Starting is only possible when all settings in
Measurement mode menu have been completed.
Measurement
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Status bar 1
Shows sensor and measuring channel.
Measuring values X/Y/Z
Shows the vibration value KB_Fmax for each axis.
Status bar 2
Shows for each direction:
•
•
•
•
•
Measurand
Characteristic
Gain
Low level
Overload
Status bar 3
Shows for each direction:
• the most critical value at the frequency with the highest
magnitude
• the frequency with the highest magnitude
Vibration total value
This is the maximum value of the three axes.
Measurement duration
Remaining and elapsed measurement time are displayed. The elapsed measurement duration
counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement duration
counts up to the aimed measuring time. The measurement is stopped when it reaches the aimed
measuring time.
For infinite measurement there is no display of remaining time.
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Remarks
Shows the current status of measurement.
Signal input
At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatics VM-PERS selects the measuring channel automatically.
Measurement
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Data storage
Data is stored in the memory in time intervals.
List of intervals
This section shows the record intervals including time, date and maximum value. An exclamation
mark indicates possible conflicts.
The first line gives an evaluation summary including the highest measuring value.
Details
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Here you see for the marked event:
• Guide value for each axis
• Measuring value for each axis
• Main frequency for each axis
Remarks
You can enter comments here for each event.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the measurement folder.
Save file as ...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Save file
This button saves the current data storage on a data medium.
Recently opened folders
This drop-down list shows the currently used data folders.
By clicking on an entry, the respective data folder is opened.
Data storage
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Report
Allows the selection of a report template and the printing of the selected measurement.
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Vibration history
This diagram shows the maximum values over the measuring time. There are zooming and report printing
functions.
Time period
Choose the time period to be displayed.
Alarms only
Only events exceeding guide values (alarms) are displayed.
Vibration history
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All events
Only alarm events
Grafik
The diagram shows the maximum vibration magnitudes versus time with their color depending on the
alarm / warning limits.
Scaling the vertical axis
You may compress and expand the vertical axis by clicking the symbols
and . Double left click at
the vertical axis scales it automatically so that the maximum value can be displayed.
Right click at the vertical axis switches the unit between mm/s and percent of the guide value.
Display in mm/s
Display in %
Scaling the time axis
You may shift and zoom the graphics in time direction by the mouse with pressed left or right button.
The time axis can be compressed and expanded by clicking the symbols
and
.
Synchronize cursor
This enables a cursor which synchronizes the time in the diagram with the belonging entry in the
data storage. In the same way you may mark an event in the data storage and the cursor will move
to the respective position.
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Report
Allows the selection of a report template and the printing of the selected measurement.
Vibration history
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Analysis
If you select an event in the data storage VM-STRUC+ can perform an analysis provided that time signal
recording was enabled.
Axis
There is an analysis for each axis direction. The first shown analysis always belongs to the
direction with the most critical magnitude.
Info
Information concerning the file location.
Time domain
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Band filtered weighted vibration velocity KBF(t) in time domain. The peak magnitude is marked.
Frequency domain
Band filtered weighted vibration velocity KBF(t) in frequency domain. The peak magnitude is
marked.
Copy
Copies the analysis data to the clipboard for use in reports.
Analysis
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Annunciators for events and data transmission in regular intervals
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment.
Depending on the used annunciator measuring data and other information can be transferred.
Annunciators can be useful for unattended long term measurements. VM-PERS can send you an e-mail, for
example, if a guide value was exceeded.
Signaling vibration total value
The vibration value can be signaled by all types of annunciators. For example, the radio-controlled
outlet can switch an alarm light on if a guide value was exceeded. This may inform construction
workers about the potential risk of their activities.
You may also configure the e-mail annunciator to send you a message each time an alarm was
tripped.
Sending the data storage
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To observe the measured data from a remote location VM-PERS can also send the contents of its
data storage periodically by e-mail.
Annunciators for events and data transmission in regular intervals
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VM-STRUC
Structural Vibration
Vibrations in buildings can be caused by
• Construction activities, like impact driving, falling material (e.g. demolition), explosions, pile driving by
vibration, compaction and tunnel drilling
• Rail and road traffic, uneven railway tracks and wheels, track switches, uneven pavements etc.
• Operation of machinery, like die cutters, forging presses, forging hammers, reciprocating saws
VM-STRUC measures to DIN 4150-3. This standard considers both sustained and short-time vibration.
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Operation panels
Menu tabs
In VM-STRUC you find the following menus:
Settings
Measurement
Settings for measurement
Execution of the measurement with indication of the measured values and colored
evaluation
Data storage
Memory for measuring values, evaluation and report generation
Vibration history Graphical display of the vibration trend
Analysis
Automated analysis of vibration maximum and main frequency
Annunciator
Signaling measured values and states for automated tests
Operation panels
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Settings
Selection tree
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In the selection tree, you find the setting
options and measurement modes in a clearly
arranged way.
A measurement mode has to be selected
before starting a measurement.
Depending on the selected measurement
mode or setting option, the detail and
configuration area on the right side changes.
By means of the buttons Show all
measurement modes aand Show only
standards the selection tree can be closed or
opened completely.
Detailed settings
The detail and configuration area changes depending on the selection in
the selection tree. Here you can configure:
•
•
•
•
•
•
Sensor
Instrument type
Data storage
Measuring location
Reports
Measuring method
Only standard modes
Only shows DIN 4150-3 settings.
All modes
Opens the complete selection tree.
Clone
Opens a new window with the same settings which can be modified.
Settings
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Sensor settings
Sensor automatics
The measurements are carried out in three axes. The direction of the axes plays an important role. If
you activate the automatic assignment of axes, VM-STRUC correctly assigns the sensor axes. It also
shows the correct sensor positioning in graphical drawings. If you follow these graphical instructions
you avoid positioning errors.
Sensor selection
To work correctly, the sensor automatic requires
assigned sensors. In the drop-down list, you
can choose among all sensors from the sensor
management.
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Instrument type
Upper frequency limit
DIN 4150-3 normally observes frequencies up to 80 Hz. In special cases, like for explosions, an
extended frequency range up to 315 Hz may be necessary.
Instrument type
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Data storage settings
Storage location
The data storage can be named here. It is saved as a directory. Additional to fixed components, the
name of the directory can also contain variable components, the placeholders.
Directory tree
This button opens a directory tree.
Data storage is carried out in a directory which contains several files. The target directory can be
newly generated in the displayed directory tree.
Saving method
VM-STRUC will typically be used for long term monitoring. It will store a list of measuring intervals.
Each of these interval is evaluated for warning or alarm events.
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Level-controlled data storage will save records with variable
length. A new record will only be saved if the evaluation
result has changed. This method is practical and memory
saving because it saves quick changes in short intervals
whereas just one record is saved for long intervals when
there is no change. The duration of each event is also
recorded.
The time window for event separation defines how long
a certain alarm event must persist to become a separate
record.
Clock-controlled data storage saves records of constant
length.
Each record is evaluated. The time resolution only depends
on the entered clock rate. Long intervals without change will
produce large amounts of data without additional information.
Example for two periods of time:
1. Alarm level exceeded for 5 seconds
2. No alarm event for 1 hour
• Level-controlled recording with 3 seconds event separation will save two records:
1. Alarm condition for 5 seconds
2. No alarm condition for 1 hour
• Clock-controlled recording with 60 seconds clock will save 61 records:
1. 1 record of 60 seconds with alarm event
2. 60 records of 60 seconds each without event
Warning threshold
DIN 4150-3 only defines two conditions: alarm or good. VM-STRUC features an additional
threshold for warnings at a certain percentage of the alarm level.
Record time signal
Data storage settings
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For a deeper analysis or for conservation of evidence VM-STRUC can save the signal in time
domain.
The following options are available for saving time signals
• never
• only at alarm events
• at alarm and warning events
Save remarks
The measurement is monitored by VM-STRUC.
For instance, it recognizes overload and low signal conditions. Such measurement remarks can
be automatically taken over into the remark field, which is available for every measurement. The
remarks are also taken over when a report is printed. Deselect this option if you do not wish to take
over the remarks.
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Measurement site
Description
You can enter here a short description of the measuring site. This is not needed for measurement but
the data is used in reports.
Measurement site
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Report templates
Reports can be printed directly from VM-STRUC. Texts, graphical elements (e.g. company logo) and variable
components can be combined to one or more report templates, which are saved. For printing, you simply select
the configured report template and print it with one mouse click.
Configure reports
The report templates can be found in this tree
structure. One report example is pre-configured. More
templates can be configured or loaded.
Printer setup
This button opens a dialog for printer selection and
configuration.
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Measurement mode
On the left side of this window you find a selection tree with the different measuring modes. The right section
shows some detailed settings.
Measuring method
Shows the selected mode.
Guide values
These are the limit values to DIN 4150-3 for the selected mode.
Set own limits
Measurement mode
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Here you may enter non-standard limits if desired.
Measuring time
The measuring time can be limited to switch off the instrument automatically after measurement.
Start delay
The time delay between pressing Start and the beginning of the actual measurement can be used
to suppress signal settling effects.
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Measurement
While measuring, VM-STRUC displays the vibration total value and a colored assessment.
Measuring mode
Shows the used settings
Sensor placement graphics
Shows sensor placement with regard to the building and in detail.
Total view
Place the sensor at a location
in the building where highest
vibration is expected.
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Sensor position
The X and Y axes should be
oriented along the walls of
the building. Adjust the Z axis
vertically using the level and the
adjustable feet.
Start/Stop
Starts and stops measurement. Starting is only possible when all settings in
Measurement mode menu have been completed.
Status bar 1
Shows sensor and channel data.
Measuring values X/Y/Z
Shows the peak value of vibration velocity for each direction.
Status bar 2
Shows for each direction:
•
•
•
•
•
Measurand
Characteristic
Gain
Low level
Overload
Status bar 3
Shows
• the most critical peak value at the frequency with the highest
magnitude
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• the frequency with the highest magnitude
Vibration total value
The maximum value of the three axes.
Measuring duration
Remaining and elapsed measurement time are displayed. The elapsed measurement duration
counts with minus sign from start delay to 00:00:00. Afterwards, the elapsed measurement duration
counts up to the aimed measuring time. The measurement is stopped when it reaches the aimed
measuring time.
For infinite measurement there is no display of remaining time.
Remarks
Shows the current status of measurement.
Signal input
At the signal input, you select the measuring channel and configure the measuring range. If you
activated the sensor automatics VM-STRUC selects the measuring channel automatically.
Measurement
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Data storage
Data is stored in the memory in time intervals or when levels are reached.
List of events
This section shows all alarm or warning events including time, date and maximum value. An
exclamation mark indicates possible conflicts.
The first line gives an evaluation summary including the highest measuring value.
Details
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Here you see for the marked event:
•
•
•
•
•
Time of occurrence
Duration of the event
Guide value for each axis
Measuring value for each axis
Main frequency for each axis
Remarks
You can enter comments here for
each event.
Currently opened folder
This field shows which data folder is currently open.
Read file
This button opens a directory tree from which you can select the measurement folder. The read
data is added to the data in data storage. This way, you can, for instance, combine measurements
from different days.
Save file
This button saves the current data storage on a data medium.
Save file as ...
This button saves the current data storage on a data medium.
You can enter a new name for the measurement folder.
Recently opened folders
This drop-down list shows the currently used data folders.
By clicking on an entry, the respective data folder is opened.
Data storage
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Report
Allows the selection of a report template and the printing of the selected measurement.
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Vibration history
This diagram shows the maximum values over the measuring time. There are zooming and report printing
functions.
Time period
Choose the time period to be displayed.
Alarms only
Only events exceeding guide values (alarms) are displayed.
Vibration history
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All enents
Only alarm events
Graphics
The diagram shows the maximum vibration velocity magnitudes versus time with their color depending
on the alarm / warning limits.
Scaling the vertical axis
You may compress and expand the vertical axis by clicking the symbols
and . Double left click at
the vertical axis scales it automatically so that the maximum value can be displayed.
Right click at the vertical axis switches the unit between mm/s and percent of the guide value.
Display in mm/s
Scaling the time axis
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You may shift and zoom the graphics in time direction by the mouse with pressed left or right button.
The time axis can be compressed and expanded by clicking the symbols
and
.
Synchronize cursor
This enables a cursor which synchronizes the time in the diagram with the belonging entry in the
data storage. In the same way you may mark an event in the data storage and the cursor will move
to the respective position.
Report
Allows the selection of a report template and the printing of the selected measurement.
Vibration history
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Analysis
If you select an event in the data storage VM-STRUC+ can perform an analysis provided that time signal
recording was enabled.
Axis
There is an analysis for each axis direction. The first shown analysis always belongs to the
direction with the most critical magnitude.
Info
Information concerning the file location.
Time domain
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Band filtered vibration velocity in time domain. The peak magnitude is marked.
Frequency domain
Band filtered vibration velocity in frequency domain. The peak magnitude is marked.
Guide value and warning curves
This diagram shows the signal (as a black mark) in comparison with the guide value and the
warning limits.
The guide values are frequency dependent for short-time vibration.
Text display
Here you find the most important characteristics
calculated from the analysis.
Copy
Copies the analysis data to the clipboard for use in reports.
Analysis
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Annunciators for events and data transmission in regular intervals
VibroMetra provides annunciators for sending messages to remote recipients or to other equipment.
Depending on the used annunciator measuring data and other information can be transferred.
Annunciators can be useful for unattended long term measurements. VM-STRUC can send you an e-mail,
for example, if a guide value was exceeded.
Signaling vibration total value
The vibration value can be signaled by all types of annunciators. For example, the radio-controlled
outlet can switch an alarm light on if a guide value was exceeded. This may inform construction
workers about the potential risk of their activities.
You may also configure the e-mail annunciator to send you a message each time an alarm was
tripped.
Sending the data storage
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To observe the measured data from a remote location VM-STRUC can also send the contents of its
data storage periodically by e-mail.
Annunciators for events and data transmission in regular intervals
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Report printing
Simple reports can be directly printed from the VibroMetra modules. Each module with report function
includes a sample report. It can be used as a basis for your customized report templates.
Printing without printer
If no printer is at hand you can use PDF printers to save your reports.
Using templates
Report templates
are shown in a tree structure of printable
elements. Each of these elements has properties like its position on
the page. Three types of report elements are selectable:
fixed text
fixed images
variable text or images generated by the software
Functions related to report templates are shown in a context menu. There are also import and export
functions to exchange report templates between different Workspaces and computers.
Changing report elements
Double click an element in the tree menu to change its properties.
For fixed text enter
• the text to be printed
• the text position on the page
• character size and color
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For fixed images enter
• the file name of the image to be printed
• the position on the page
• the zoom ratio
Variables are filled by the VibroMetra modules, for
example, with measuring values or settings.
For variable text enter
• the variable to be printed
• the text position on the page
• character size and color
For variable images enter
• the variable of the image to be printed
• the position on the page
• the zoom ratio
Clone, export or import report templates
There are several ways of reusing or modifying existing report templates:
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Right click an existing report template
based on the existing one.
. Click Clone... to create a new template
Right click an existing report template
template.
. Click Export... to save the report
Right click in an empty space of the tree structure to import an existing template
file.
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Unified indicators
All VibroMetra modules have status bars showing the following indicators:
Sensor
This field shows the sensor type connected with the channel. A red indicator warns if the
instrument was started without assigning a sensor to the channel. In this case the measuring
signal will be a voltage.
Channel
This is the name of the measuring channel or a standard text if no name was entered.
Gain
The gain range that was selected on this channel.
Overload
This indicator becomes red if the peak amplitude of the signal is > 95 % of the magnitude which the
M302/M312 devices can handle without clipping.
To lower the magnitude you may switch to a lower gain.
Low signal
If the unfiltered and unweighted measuring signal drops for at least 3 second s below 1 % of the full
scale value this indicator becomes yellow. This is a warning that the accuracy may decrease. To
increase the magnitude you may switch to a higher gain.
Low signal condition is not a problem in periods when there is no relevant signal.
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Control center VibroMetra
VibroMetra is highly modular. Sensors, measuring channels, instruments and - if required - annunciators are
combined to solve vibration measurement tasks. The control center of VibroMetra serves for central settings
and gives you an overview. It positions itself at the lower edge of your screen after having started VibroMetra.
The control center is available in 3 variants:
VibroMetra Online
VibroMetra Offline
VibroMetra Simulator
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Offline measurement with recorded raw data
For testing all instruments without measurement hardware (free of charge)
Control center VibroMetra
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VibroMetra Online
For real-time measurement and additional recording of raw data, you start VibroMetra.
Measuring chain
All elements of the measuring chain are administrated in the upper area. They are sorted in order of the natu
signal flow, which starts with the sensors and ends with the instruments or the optional annunciators.
•
•
•
•
Sensors
Measuring channels
Instruments
Annunciators
Expand/collapse control panels
This button switches the view of the control panels.
CPU load
VibroMetra works in streaming mode. That means, from the moment you start the instruments until
you stop them, sensor signals are acquired without interruption and with high sample rate. They are
displayed in the instruments immediately. Not a single value gets lost.
The CPU load shows how fast VibroMetra can solve this tasks with regard to the computing time
assigned by the computer. Values below 100% mean that VibroMetra can carry out all tasks. Values
above 100% signal an overload: The computer cannot carry out real-time measurement. In this
case, the following measures can put things right:
• Closing instruments
• Reducing the number of channels in the instruments (example)
• Reducing the refresh rate
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Start/stop all instruments
Instruments can be started and stopped separately or centrally in VibroMetra.
Start/stop all annunciators
This button starts/stops all annunciators centrally.
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VibroMetra Simulator
Using the VibroMetra Simulator is free of charge. You can operate all instruments without purchasing licenses.
VibroMetra Simulator works like VibroMetra Online, but there is one important difference:
Instead of using measurement data from the connected measuring equipment, signals are generated by
VibroMetra Simulator. You can adjust magnitude and frequency of three sine wave generators for each
measuring channel.
You can use VibroMetra Simulator for different purposes:
• Training: All instruments are available for operation. By means of the artificial measurement signals,
measuring is possible as well. This way, you can practice the handling of VibroMetra without connecting
measuring hardware.
• Evaluation without measuring hardware: Several instruments can read back their saved data (IVMBODY/VM-HAND/VM-SHIP/VM-PERS/VM-STRUC/VM-WIND). With this data, you can carry out further
evaluations and print reports.
• Analysis of special effects: You can purposefully analyze effects from digital signal processing, for instance
the leakage effect during Fourier transformation of finite signals in time domain. The artificial signals can be
set exactly, they are free of disturbances (e.g. secondary frequencies) of real measurement objects.
Differences in comparison with the Online are:
• No raw data recording
• Extended settings for the measuring channel to adjust the signal generators.
VibroMetra Simulator
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Properties of the measuring channel - signal generators
In VibroMetra Simulator measurement signals can be generated artificially. This way, no connected
measuring devices are required.
Switching the control panels
The control panel Properties contains the same settings like in VibroMetra Online. The elements of
the control panel Signal simulation are explained here.
Sine wave generator
Three sine generators are available to generate a signal mix. The generated signal simulates the
input of a measuring device, to which measurement signals (in this case: the artificially generated
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ones) are applied. You can adjust magnitude and frequency for each generator. A magnitude of 0
mV disables the respective signal generator.
Key phase signal
In addition to the sinusoidal signals you can generate a digital pulse. It occurs at a frequency of
one of the selectable sine generators and you can enter a phase angle. To disable the digital pulse,
select "Off" in the Frequency list.
OK
This button closes the window, saves the data and adjusts the signals.
Abbrechen
This button closes the window without saving changes.
Properties of the measuring channel - signal generators
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VibroMetra Offline
The raw data recorded in VibroMetra Online can be played back in VibroMetra Offline. To display the data,
you open the instruments and adjust them acc. to the measurement task. The raw data contains the full
information content of the sensor signals. So when playing back the data, the settings in the instruments can
be different from those during the original measurement.
Thus, you can carry out analyses which remained undone during the measurement. This
way, repeated measurements are often unnecessary so that you save time and costs.
Play back raw data
The following elements are available for playing back the raw data:
This button opens a raw data file.
This buttons replays the data with normal speed. After you pushed this button, it changes its
appearance and becomes the pause button
This button pauses the replay of raw data.
Single-step button. By means of this button, a short time segment of raw data can be played
back. This way, you can reconstruct fast processes that are visible for a short time only in
slow-motion. The single-step button is only visible in the pause mode. It changes to Fastforward button
during play-back.
This button replays the data with maximum speed. Its only available during play-back and
changes to single-step button in pause mode
Jump back to important points in time:
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• to a note
• to the time a measuring channel starts measuring
• to the start of the raw data file
Jump forward to important points in time:
• to a note
• to the time a measuring channel stops measuring
• to the end of the raw data file
The time display shows the play-back position, which is also marked by a cursor.
Preview of raw data
The raw data control panel provides, amongst others, a preview of the recorded raw data.
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Working with raw data
In addition to the controls for playing back raw data, the raw data control panel of the VibroMetra Offline
provides further options.
Tabs for the selection of control areas
The raw data control panel is divided into three control areas:
Navigator
Notes and
masks
Info
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Table of all notes entered during measurement or later.
Information about the opened raw data file or about the export progress.
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Navigator
The Navigator provides a preview of the saved raw data and notes. Furthermore, diverse display and export
functions are available.
Preview chart
The recorded raw data is visible in the preview chart. It is displayed as level of the measuring
channel for the whole measurement range and also includes the gain ranges of the different parts
of the measurement range.
Time axis
By clicking right on the time axis you can switch between
• the relative time since starting the measurement and
• absolute time of day (of the measurement PC) during measurement.
By means of the
button you expand the raw data, by means of the
button you compress it. By
means of the the scroll arrows you shift the raw data in the respective direction.
Scaling with the mouse
By means of the mouse, the measurement chart can be zoomed or scrolled. The chart is scrolled
with the left mouse button held down. By holding down the right mouse button, you choose an area
to be zoomed.
Notes
Notes are shown with a line that connects them to their exact time of recording
on the time axis. Setting options for notes can be found in the Notes menu.
Cursor
Navigator
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The cursor is shown as vertical line at the position of play-back. You can move it by mouse
after you paused play-back. As moving the cursor interrupts the time consistence of the raw
data signal, the instruments are resetted after cursor movement.
Menu button axes
Pushing this button opens a menu. The axes menu provides functions for the channel axis and for
the time axis.
Maximize
If this entry is active, the maximum level in the displayed time range is drawn with
automatically maximum height. The other level values are scaled accordingly. At the same time,
the entries for manual adjustments are deactivated. They are available again after
deactivating "Maximize automatically".
Maximize in Activating this entry causes the same behavior as automatic maximizing. But if
displayed
you change the displayed time range, scaling is kept and not changed. If there are
range
higher levels in the new time range, they are cut off in their height.
Adjust to full The levels are scaled to the full dynamic range of the measuring equipment (M302/
scale
M312).
Display
measuring
time
Display
measuring
time
The relative time since starting the measurement file is displayed on the time axis
when activating this entry.
The wall clock time valid during the original measurement is displayed on the time
axis when activating this entry. If the time range is longer than 24 hours, the date is
displayed as well.
Menu button notes
Pushing this button opens a menu. This menu controls the display of notes saved in the data
stream.
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Insert note at
cursor
Show all notes
Hide all notes
Only show
notes at cursor
Only show note
with table focus
Indicate hidden
notes
Interrupt replay
at notes
In addition to notes that were entered during the measurement, you can
also add notes during offline-analysis by means of this function. It is only
available if the cursor is not positioned at the beginning of the time axis,
i.e. time display does not show 00:00:00 000.
Activating this function causes a switch to the control panel notes and
masks and adds a new row to the table at the correct time position. The
time marker is filled automatically and a default text for the note is given.
You can change this text.
If you select this option, the Navigator displays all notes in maximum
presentable length. This function is useful if there are only few notes in the
displayed time range.
No notes are displayed if you select this option. Thus you have a clear
view on other elements of the preview chart.
The note closest to the cursor is displayed in full length.
The Navigator displays the note you selected in the control panel Notes
and masks.
Notes are displayed as running numbers, not as text. If Only show notes
at cursor is active at the same time, only the note closest to the cursor
is displayed in full length and all other notes are displayed with running
numbers.
If the cursor reaches a note during play-back, the Navigator automatically
switches to pause mode and play-back is interrupted.
Menu button masks
The masking technology of VibroMetra Offline allows to suppress measurement data (section by
section) while it is transmitted to the instruments. This function may be helpful if there are short
sections of measurement data which are not representative for the complete measurement course.
For instance there may be measurements forming parameters for a longer time. If there are
abnormal short-time events now, for example overload of a measurement channel because of
accidentally vibrations on the sensor, the whole measurement would have to be dismissed. By
masking the abnormal time period, the measurement is still valid. This procedure saves time
and costs since the measurement does not need to be dismissed and carried out again. Another
advantage of using masks is the preservation of the original measurement data. When the mask is
deleted, the complete measurement data is visible again..
Insert masked range
This function enters a mask visible in the Navigator graphic. This provisional
mask is displayed in pale red first and can be
adjusted now. Therefore, the mouse pointer is positioned on one of the mask's
side borders. By clicking left and dragging, the border can be adjusted anew.
Navigator
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If the mask is situated and sized correctly, the procedure is finished by the
menu entry Finish masking. This entry is only active while a mask is inserted.
After finishing, the mask is displayed in red. Additionally, an entry is created in
the control panel notes and masks. Here you can describe for which reason the
mask was entered so that this information is available later.
If inserting a mask is to be aborted, the entry Abort masking has to be selected. The pale red mask
disappears then. The entry is only active while a mask is inserted, too.
Fill masks with zero
This option causes the measuring time to run normally during the masked time period, but as
signal, zeros are transmitted instead of the original measurement signal.
Omit masks
This option means that masked time periods are simply skipped. So regular measurement data
is transmitted to the instruments until the masks starts and afterwards the measurement data
following the mask is transmitted immediately.
Menu button export
The export functions allow to save measurement data from the currently displayed time period in a
new file. This way, interesting sequences in the measurement data can be extracted and saved in
smaller files. These files can be send by e-mail.
Different output formats are available. Text and binary export are only possible if you purchased
licenses for these options.
IDS (ACh + DCh) This option exports data in IDS format. This format is the VibroMetra format so
that all additional pieces of information like wall clock time, notes, masks, etc. are
saved as well. VibroMetra exports the signals of the measuring channels (ACh) as
well as the rotation speed signal (DCh).
Text (ACh)
This option exports the signals of the measuring channels (ACh) into a text
file. The data from all channels for the same time period is shown in one row
separated by tabulators. The first column shows the time axis is seconds.
Text (DCh)
This option exports the rotation speed signal (DCh) into a text file.
Binary (ACh)
This option exports the signals of the measuring channels (ACh) into a file in
binary format.
At first, a header in text format is written with two rows for the name of the
measuring channels and the unit. Its followed by time and measurement data for
each time period:
For each time period, the time of the measurement in seconds is written in double
format (floating point number, 8 Byte), followed by the measured values of all
channels in float format (floating point number, 4 Byte). In this order, the data of
the time range shown in the preview chart follows time period per time period.
After having selected the format, you decide which channels are to be exported. You can deselect
unimportant channels to reduce the amount of data.
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Click on Start export to initiate exporting. The generated file has the same name as the currently
opened one, but with a new index.
Navigator
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Notes and masks
This control area shows all notes and masks in a table assorted by time.
Table
Additional to the time stamp of a note resp. the time range of a mask the table also shows the type of
entry.
O Original notes saved during measurement.
U Unsaved notes or masks.
M Mask
(Empty) Saved note that has been changed or entered during offline analysis.
Edit
Click this button to edit the text of the selected note/mask.
Jump to
Click this button to position the cursor at the position of the selected note/mask in the
preview chart.
Save
This button saves changes or new notes/masks.
Delete
This button deletes the selected note/mask.
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Sensor management
VibroMatrix supports the use of different sensors by means of a sensor data base.
Selection tree
The selection trees shows all saved sensors. They are divided into
groups. The traffic light on the left side of the sensor name is an
activity indicator:
• red: The sensor is not in use at the moment.
• yellow:
The sensor is assigned to a measuring channel but this
channel is inactive.
• green:
The sensor is assigned to a measuring channel and this
channel is measuring at the moment.
Mouse operation
• A double click on a sensor entry opens the properties window of
the respective sensor.
• A double click on a sensor group opens the properties window of
the respective group.
• A right click on a sensor opens its context menu.
• A right click on a sensor group opens its context menu.
• A right click in an empty space of the selection tree opens its
context menu.
Filter
You can restrict the sensor list, e.g. to sensors which are currently measuring (green activity indicator).
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Properties of sensor
You can save the properties of each sensor in use. Several common alternating measurands are already listed
with suitable units. But you can also enter sensors for other measurands. The basic data contains a clear
identification with type and serial number as well as the sensor sensitivity.
If the sensor is equipped with TEDS technology, basic data and calibration state are read directly from the
sensor and entered automatically.
Input areas
By means of these tabs, you switch the input areas:
• Basic data: Measurand, clear identification and sensitivity
• Calibration state: Time information concerning calibration
• If you selected the measurand User measurand, a third input area is available to characterize this
measurand.
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Basic data
Basic data of the sensor includes measurand, clear identification and sensitivity.
Measurand
Different common alternating measurands are listed with suitable units. You can select the required
measurand from the drop-down list. By selecting the entry User measurand you can enter another
non-predefined measurand.
Sensor type
You can enter the sensor type here. The combination of type and serial number is usually unique and
it is used to distinguish the sensors. When using triaxial sensors, you usually add the name of the axis
(e.g. X, Y or Z) to type or serial number.
Serial number
You can enter the serial number of the sensor here. The combination of type and serial number is
usually unique and it is used to distinguish the sensors. When using triaxial sensors, you usually add
the name of the axis (e.g. X, Y or Z) to type or serial number.
Sensitivity
The sensitivity characterizes the transmission behavior of the sensor. The sensor converts a
mechanical quantity into a voltage signal. You can find this conversion factor or sensitivity in the
sensor calibration sheet.
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Calibration state
The calibration state panel shows time information concerning the calibration and the calibration state.
Calibration interval
You can adjust the calibration interval of a sensor. Manufacturers usually recommend a calibration
interval of 12 months for piezoelectric sensors which are frequently used and 24 months for rarely
used piezoelectric accelerometers.
Date of last calibration
Shows the date of the last calibration. The date is set by
• entering a sensitivity,
• saving in the instrument Calibrator
• in case of using TEDS sensors by writing data into the internal storage of the sensor.
Status
The status gives a quick overview about the elapsed time since the last calibration.
• If less than 90% of the calibration interval have elapsed, the status is OK.
• From 90% .. 100% the label shows: Calibrate soon
• If more than 100% of the calibration interval have elapsed, the status is: Calibrate!!!
However, you can use the sensor independently from the calibration state. The status information is
only there to remind you of the calibration and you can still use a sensor with an expired calibration
interval together with VibroMetra.
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User measurand
If you use a sensor for a measurand which is not available in the prepared list, you can characterize this
measurand as user measurand.
Full name of the measurand
This name is used for instance in drop-down lists for selecting the measurand.
Short name of the measurand
This name is used for instance in status bars.
Symbol
The symbol for the measurand is used for instance as axis label in charts.
Unit
The unit of the measurand is used for all numerical displays of the measurand or also as axis label.
User measurand
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Properties of sensor group
Sensor groups are used for a clear sorting in case of measuring with many different sensors.
Name
Name of the sensor group in the selection tree. It has to be unique, i.e. it is not possible to have two
sensor groups with the same name in a selection tree.
Description
An optional description of the sensor group.
Statistics
Statistics for the number of sensors in the group and their states.
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Context menu sensor
A context menu opens when clicking right on a sensor in the selection tree.
Delete sensor
prompt.
A click on this entry deletes the sensor from the selection tree after confirmation
Properties
A click on this entry opens the properties window of the sensor.
Context menu sensor
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Context menu sensor group
A context menu opens when clicking right on a sensor group in the selection tree.
New sensor
window.
A click on this entry creates a new sensor in the group and opens its properties
Delete group
A click on this entry deletes the sensor group after confirmation prompt.
Properties
A click on this entry opens the properties window of the sensor group.
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Context menu selection tree
A context menu opens when clicking right in an empty space of the selection tree.
New group
A click on this entry creates a new sensor group and opens its properties window.
Context menu selection tree
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Measuring channel management
VibroMetra can be operated with one single measuring channel, but also with 32 channels. The management of
measuring channels provides an overview.
Selection tree
The selection tree shows all devices incl. their measuring channels. The
devices are sorted acc. to their type.
The left picture shows a device type M312 with serial numbers are 1010.
A sensor model KS80D is connected to channel 1 and a sensor KS91B to
channel 2. On the left of the channel name, there is a status indicator in
traffic light colors:
• red: This measuring channel belongs to a device which is not
connected at the moment.
• Yellow:
This measuring channel belongs to a connected device and it is
ready for measuring. However, the channel is not measuring yet.
• green:This measuring channel is currently measuring.
Mouse operation
• A double click on a device type opens the properties window of the
respective device type.
• A double click on a device opens the properties window of the respective
device.
• A double click on a measuring channel opens the properties window of
the respective channel.
• A right click on a measuring channel opens its context menu.
Filter
You can restrict the list of measuring channels, e.g. to channels which are currently measuring (green
activity indicator).
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Device type properties
The window shows some properties which are characteristic of that device type.
Device type properties
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Device properties
The window shows some characteristics of the device.
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Measuring channel properties
You can adjust measuring input settings separately for each measuring channel. Additionally, you can enter
an individual name which is used in the whole program.
Hardware high pass
The high pass frequency of VibroMetra instruments is freely adjustable. However, this freedom is
limited by the hardware high pass of the measuring channel. Two high passes are available:
• 0.1 Hz for low-frequency processes.
• 1.0 Hz for all other processes.
In principle, you can also measure all other processes for which the 1.0 Hz high pass is suitable
if you selected 0.1 Hz. But a high-pass filter always features a settling time after switching on or
sensor connection: the lower the limit frequency, the longer the settling time. When measuring lowfrequency processes, one accepts a longer settling time (e.g. 30 s). However, such a long settling
time may be disturbing when measuring faster processes. It can be reduced to 1/10 when selecting
the 1.0 high pass.
IEPE supply
The measuring input supports piezoelectric sensors or microphones with so-called IEPE interface.
A constant current supplies the sensor's integrated amplifier. Thanks to this integrated amplifier, it is
possible to transfer the sensor signal over long distances (e.g. 100 m).
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If you connect other sensors, we recommend to switch off the IEPE supply. This way, the measuring
input is a high-quality measuring input for AC voltages from +/- 10 V.
TEDS detection
TEDS is an abbreviation for Transducer Electronic Data Sheet. The sensor not only contains an
amplifier as described at IEPE supply, but also a chip with important data. For instance, this data
contains type, serial number, transmission behavior, date of last calibration. To work with TEDS
information, you have to activate the IEPE supply.
There are few IEPE sensor types which react to TEDS detection in a way which does not conform
to the standard. The result is that the IEPE supply is switched on and off. In this case you have to
deactivate TEDS detection.
Channel name
For each measuring channel, you can enter an individual name identifying the measurement task.
In VibroMetra, this name is used e.g.
• when selecting the measuring channel
• in status bars
If you do not enter a name, a standard name is used for the measuring channel. It consists of
device type, serial number and channel number, for instance
K1 - M302 #1010 (channel 1 of the M302 with serial number 1010)
Calibration information
This field displays the date of the last calibration. Internally, 5 years are used as calibration interval.
The status information means:
• If less than 90% of the calibration interval have elapsed, the status is OK.
• From 90% .. 100% the label shows: Calibrate soon
• If more than 100% of the calibration interval have elapsed, the status is: Calibrate!!!
However, you can use the measuring channel independently from the calibration state. The status
information is only there to remind you of the calibration and you can still use a measuring channel
with an expired calibration interval in VibroMetra.
Licenses
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The licenses for the instruments of are saved in the M302/M312. This field shows the licenses for
the respective measuring channel.
A file window opens when adding a license. Select the key file and confirm with Open. The license
will be loaded into the USB device now.
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Context menu measuring channel
A context menu opens when clicking right on a measuring channel in the selection tree.
Properties
Opens the properties window of the channel.
Disconnect sensor
A click on this entry disconnects the sensor from the measuring channel.
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Instrument management
VibroMetra offers a variety of instruments, each for a certain purpose. Several instruments can be operated
together.
Selection tree
The selection tree lists up all available instruments. The traffic light
on the left side of the instrument's name is an activity indicator:
• red: This instrument has been installed, but there is no license
for using it.
• yellow:
This instrument is ready for measuring, but it has not yet
been started.
• green:
This instrument has been started.
Mouse operation
• A double click on an instruments opens a new instrument
window.
• A right click on an instrument opens its context menu.
• A right click in an empty space of the selection tree opens its
context menu.
The number following the instrument indicates how much instrument windows are opened. One license
allows the five-fold use of an instrument. With a single license, you can for instance open 5 VMMETER windows to display 5 different values simultaneously, e.g. vibration displacement, velocity,
acceleration, rotation speed and main frequency.
Filter
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You can restrict the list of instruments, e.g. to instruments which can be opened (yellow or green
activity indicator).
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Context menu instrument
A context menu opens when clicking right on an instrument in the selection tree.
NeW
A click on this entry opens a new window for the respective instrument.
New at channel ...
A click on this entry opens a new window for the respective instrument and
uses the selected channel as first measuring channel.
Context menu instrument
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Context menu selection tree
A context menu opens when clicking right in an empty space of the selection tree.
Add
A click on this entry adds an instrument license.
The instrument license is key file. Usually this file will be sent to you from your VibroMetra dealer, e.g.
by e-mail. This license is transferred to the USB device. That's why you need to connect the M302/
M312. When clicking on Add, a file window opens in which you select the respective key file.
Confirm the selection by clicking on Open to transfer the file to the M302/M312.
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Annunciator management
Many instruments of VibroMetra can signal information outward optionally by means of annunciators.
Here, in the annunciator management, you create the annunciators. Afterwards, they are available in the
instruments. Annunciators are additional ways to communicate information:
1.
2.
3.
4.
Transfer by e-mail
Signaling in a display
Using radio switches
Controlling digital outputs
Selection tree
The selection tree shows all available types of annunciators and
the created annunciators for each type. The traffic light on the
left side of the annunciator name is an activity indicator:
• red: This annunciator is not connected to an instrument.
• yellow:
This annunciator is connected to an instrument, but the
respective instrument has not yet been started.
• green:
This annunciator is connected to an instrument and the
respective instrument has been started.
If there are missing general preconditions for operating an
annunciator type (e.g. a disconnected radio control unit for
operation of radio switches), the respective annunciators are
marked as follows:
Mouse operation
• A double click on an annunciator type opens the properties window of this type: E-Mail, radio
switch, digital output.
• A double click on an annunciator opens its properties window: E-Mail, display, radio switch,
digital output.
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• A right click on an annunciator type opens the context menu of this type.
• A right click on an annunciator opens its context menu.
Filter
You can restrict the list of annunciators, e.g. to annunciators which are currently connected (yellow
or green activity indicator).
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Context menu annunciator type
A context menu opens when clicking right on an annunciator type in the selection tree.
Properties
The annunciator types E-Mail, digital output and radio switch feature a properties
window. It is opened by clicking on Properties.
Neuer Melder
Clicking on this entry creates a new annunciator of the respective type.
Context menu annunciator type
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Context menu annunciator
A context menu opens when clicking right on an annunciator in the selection tree.
Properties
By clicking on Properties, you open the properties window of the annunciator
(display, E-Mail, digital output, radio switch).
Delete annunciator
By clicking on this entry, you delete the annunciator. But it is only possible if the
annunciator is used in no instrument.
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Annunciator type Large Display
If VibroMetra is to be applied for monitoring or inspection tasks (for instance in quality control), work is often
divided:
1. Measurement experts define measurement modes as well as limit values and configure the VibroMetra
instruments acc. to these specifications.
2. Measurement staff carries out the measurements afterwards. A clear but also simplified view on the
measurement result is required.
This simplified view is obtained by the display annunciator. The display is a window adjustable in size, which
fills out the complete screen if required. It indicates a measured value or status and colors the text color and the
background acc. to the configured specifications.
Configuration
The configuration is carried out in the properties window of the display.
Annunciator type Large Display
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Configuration of a Large Display annunciator
The display is suitable for a big but reduced view on the measurement results. Connected to an instrument, it
can collapse its detailed settings and only displays the result of the measurement in a big and clear way.
Output area
After you have completed the configuration of the display, you can collapse the settings area. You
can expand it again for configuration.
Expand/collapse settings
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After you have completed the configuration of the display, you can collapse the settings area. You
can expand it again for configuration.
Settings for output area
You can configure the output area individually for three states.
• If you activate this option, the entered text will be displayed in the output area.
• If you do not activate this option, the measured value will be displayed in the
output area.
Enter the text for the respective state here.
This button opens a dialog box for selecting font type and also font size.
This button opens a dialog box for selecting the background color.
Hold display after switching off
• If you activate this option, the last output is held after you switched off the connected instrument.
• If the option is deactivated, the display shows "Off" in grey color after you switched off the
connected instrument.
Configuration of a Large Display annunciator
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Annunciator type E-mail
Long-term measurements with few events are often to run unattended. Data needs to be sent only for particular
events.
A suitable way of transmitting data in general is by e-mail. Depending on the instrument, the following
VibroMetra data is transmitted:
•
•
•
•
Single values
Status annunciations
Measurement charts
Greater amounts of measurement data
Configuration
A VibroMetra instrument notes an event – how does the respective measuring value reach the recipient at the
other end of the world?
1. Firstly, you configure for each messenger with which text it is to be sent and to which recipient the measured
values are to be sent.
2. From these data, an e-mail is created and transmitted to the e-mail program installed on the PC. Therefore,
you have to configure the connection to the e-mail program before. Configuring the e-mail program is not a
part of VibroMetra.
3. Your e-mail program sends the mail to the recipients configured in the e-mail annunciator via Internet.
Configuring the Internet access is carried out as usual under Windows and is not explained here.
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Settings for the annunciator type E-mail
VibroMetra does not create its own connection to an e-mail server to send event annunciations by e-mail. It
uses the installed e-mail software instead. This way, there are two advantages:
1. You only enter your e-mail data once and not a second time for VibroMetra.
2. You work in your usual environment, e.g. you can watch all e-mails send from the annunciator in the email software you are used to.
In order to enable the E-mail annunciators to work, you have to create a connection to an installed e-mail
software. This bridge is called MAPI. Many e-mail programs feature a MAPI interface, e.g. Outlook, Outlook
Express, Windows Mail, Thunderbird, The Bat!...
Input field
Some e-mail clients, e.g. Outlook, expect a profile name if you want establish a connection to them.
You can check the profile in the system control under Mail.
Graphical presentation of the connection status
The connection status between VibroMetra and the installed e-mail software is shown in a
connection chart.
VibroMetra is not connected to the e-mail
software.
Settings for the annunciator type E-mail
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VibroMetra is connected to the e-mail
software.
Connect VibroMetra to e-mail software
By clicking this button you connect VibroMetra to the installed e-mail software. You can see whether
a connection has been established or not in the connection chart and in the protocol.
Protocol
The connection attempts to the e-mail software and the result are listed up here as well as entries
for sent e-mails.
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Configuration of an E-mail annunciator
You can create up to 100 E-mail annunciators in VibroMetra and enter recipients and texts individually for
each annunciator.
Status bar
The status bar indicates
• whether the annunciator is switched on or not,
• how many e-mails have been sent by the
annunciator,
• how many errors occurred.
Reset counter
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This button zeros the counters for the sent e-mails and the errors in the status bar.
Expand/collapse settings
After having finished the configuration of the e-mail annunciator, you can hide the setting area to
save space on the screen. For configuration, you can expand the setting area again.
Recipient
In this area, you enter the recipients for the e-mails.
• In line To: you enter the main recipients.
• In line Cc: you enter recipients who are to receive a copy of the e-mail and whose e-mail address
is to visible for all recipients.
• In line Bcc: you enter recipients who are to receive a copy of the e-mail and whose e-mail
address is to be invisible for all recipients.
• You can enter several addresses in each line. Therefore, you confirm the address by pressing the
•
•
Enter button and enter the next address. By means of the
enter addresses.
button you can expand the list and
If you want to delete an address, expand the list by means of the
address you want to delete. Confirm by clicking on
button and select the
.
The buttons
open the address book of the e-mail software. But only few email programs support this function (e.g. Outlook 2000), so that clicking on these buttons mostly
does not have any effect.
Insert variables
In subject line and text of the e-mail, you can insert variables which are filled with current values at
time when the e-mail is sent. 4 variables are available:
•
•
•
•
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Measured value: The currently measured value is inserted.
State: The current state is inserted.
Date: The current date is inserted.
Time: The current time is inserted.
Configuration of an E-mail annunciator
VibroMetra Manual
By clicking on Insert, you insert the variable in the subject or text of e-mail at the place of the cursor.
The placeholder for the variable is simple text which is specially marked (with @@)
Subject
You can configure the subject line of the e-mail in this field. This subject can contain simple text but
also variables.
Text
You can configure the text of the e-mail in this field. You can enter simple text but also variables.
Configure states
You can change the state names here. For instance, a limit exceedance could be named
"exceedance of guide values" instead of "alarm". Furthermore, you can select for which states emails are to be sent.
Configure sending
You can set different limits for e-mail sending so the recipient will not receive too many e-mails.
• For instance you can decide that attached files will only be sent if they do not exceed a certain
size.
• Up to 16 measured values can be ready for sending per second. It is advisable to send measured
values only in case of state changes.
• Finally, you can restrict e-mail sending globally by a maximum number of e-mails per minute. If
the connected instrument generates more e-mails per minute. these e-mails are blocked until the
minute is over. E-mail which have not been sent are counted as errors in the status bar.
Configuration of an E-mail annunciator
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Annunciator type Digital Output
By means of this type of annunciator alarm states can be signaled via industrially common electrical
switching outputs, e.g. relays as well as simple or insulated digital outputs. You can connect electrical
annunciators to this switching outputs, e.g. alarm lamps, horns or flashlights.
That is why these annunciators are particularly suitable for stationary installations, e.g. in process or quality
control. The variety of electrical outputs is represented by different output modules of the ADAM* system.
The system design allows modular extensions. Thus, VibroMetra can control hundreds of electrical switching
outputs.
* The ADAM system is a product of Advantech, represented in Germany by the Advantech Europe GmbH.
Setup
The measuring PC (1) is connected to a single converter type ADAM-4561 (2) via USB interface. It converts
commands for the output modules of the ADAM network (3). Each output module contains several electrical
switching outputs. Number and type of switching outputs differ depending on the type of output module. The
switching outputs control annunciators or signal their state to other devices, e.g. controls or a PLC (4).
Modules in the ADAM network
All modules of an ADAM network can be connected to each other by a twisted pair wire. Without further
measures you can connect 32 modules in series. The allowable distance between two modules is up to 1200
m. You can use repeaters for more modules or longer distances.
The RS485 standard is used for communication between the modules. Two terminals are required, the
following colors are recommended for the wires:
• DATA+ Yellow (on module: Y)
• DATA– Green (on module: G)
Supply
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The converter ADAM-4581, which
connects the ADAM network to the PC,
is supplied from the USB interface.
The output modules feature two
terminal blocks, to which you can apply
a supply voltage of 10..30 V DC. The
following colors are recommended for
the wires:
• +Vs Red (on module: R)
• GND Black (on module: B)
It is not necessary to connect the supply
lines of all modules. It is also possible to
supply separate modules locally.
Mounting
For all ADAM modules, adapters for wall mounting but also for DIN rail are included in delivery. Additionally,
the modules can be screwed to each other.
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Configuration
The configuration is carried out in three steps:
1. Establish the connection to the converter ADAM-4561.
2. Detect connected modules and change addresses if necessary.
3. Configure the annunciator.
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Establish connection with ADAM network
VibroMetra always tries to establish connection with the ADAM network automatically. By double click on the
annunciator type Digital output in the selection tree, you open the settings for the ADAM network to check
the connection.
As a condition for a successful connection you have to install the driver for the converter ADAM-4561 and
connect the converter ADAM-4561 with the PC. If you want VibroMetra to detect an ADAM output module,
you have to supply it and wire it with the converter ADAM-4561 (see design).
As long as there is no connection, the settings are displayed as follows:
Connection chart
The connection status between VibroMetra and the ADAM network is shown in a connection chart.
Unconnected status
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Connected status
Connect VibroMetra with ADAM network
By clicking this button you connect VibroMetra to the ADAM network. You can see whether a
connection has been established or not in the connection chart and in the journal.
Protocol
The connection attempts to the ADAM network and the result are listed up here as well as entries
for switching processes.
Establish connection with ADAM network
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Detect connected modules and change addresses if necessary
If VibroMetra is connected with the ADAM network, it can detect the connected output modules and you can
change their addresses if necessary.
Connection chart
The connection status between VibroMetra and the ADAM network is shown in a connection chart.
Connected status
Unconnected status
Connect again
If the connection with the converter ADAM-4561 has been interrupted (for instance because the
USB cable has been removed), you can establish the connection again by clicking this button.
Protocol
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The connection attempts to the ADAM network and the result are listed up here as well as entries
for switching processes.
New scan
By clicking this button you start a search for output modules connected to the ADAM network.
They are taken over to a list. To ensure that the scanning process will not take too long, you can
limit the number of addresses to be scanned.
Number of addresses during scanning
This entry limits the number of scanned addresses.
List of detected output modules
This field lists up the detected output modules with address, module type number and functionality.
Change of address
Every ADAM output module has its own address so that you can address it clearly. When delivered,
this address is often set to 0. So make sure that all output modules have different addresses if you
want to use them together.
You can change the address comfortably in this window. The left list contains the addresses of all
detected modules. The right list offers free addresses. You change the address by clicking on the
button --- Change address to --->.
Detect connected modules and change addresses if necessary
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Configuration of a digital output
Each digital output can be configured individually.
Status bar
The status bar indicates
•
•
•
•
operating mode
last command
number of sent commands
number of errors occured when sending commands
Reset counter
This button zeros the counter for the errors.
Selection of the switching contact
In this area, you select the actual switching contact.
• All detected device types are listed up.
• All devices of the selected type are listed up. They are represented by their addresses since
there might be several devices of the same type.
• Finally you can select the switching channel of the selected device (most devices feature several
digital outputs).
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Switching behavior
In this area, you decide at which state the digital output is to switch on. The output switches off if
the connected instrument shows a different state.
Hold time
You can enter a minimum hold time after switching on to make sure that slower successive devices
are able to recognize the switching state.
Configuration of a digital output
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Annunciator type Radio Switch
By means of this type of annunciator, alarm states can be signaled by electric devices. Therefore, the
annunciator controls a 230V radio switch which switches the power supply of connected loads. These loads
can be alarm lamps, horns, flashlights or other devices as well.
These annunciators are suitable for temporary monitoring tasks at a certain location. Thanks to radio
transmission, no wiring is required. This way, you can install your equipment quickly.
The radio switch is a component of the FS20 radio system, which is offered by different suppliers
independently from the VibroMetra system. It is quite common in automation. In free field, the radio range is
up to 100 m.
The FS20 radio system does not have a feedback channel. There is no feedback for VibroMetra whether
the switch was actually switched after the switching command. Apart from that, the system has proved its
reliability in thousands of installations. It is a versatile and simple option for alarms.
Notice: The FS20 system is operated in the 868 MHz band. Please make sure that the 868 MHz band is
licensed for public use in your country.
Setup
The measurement PC (1) is equipped with a single USB radio control unit type FHZ 1000 PC (2). It transfers
the switching commands to all associated radio switches (3) by radio communication. 16 different channels
are available so that 16 different states can be signaled.
Even if there is another FS-20 system working in the closer environment, there will be no interference due
to so called home code. This code is set especially for the FS20 system controlled by VibroMetra. Your
VibroMetra distributor already does that for you as factory setting. The chance of having the same home
code in a neighboring system is very low.
Driver installation
If the radio control unit FHZ 1000 PC is connected to the PC for the first time, Windows will ask for a driver
for this device. You find this driver on your VibroMetra CD.
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Configuration
The configuration is carried out in three steps::
1. Establish connection with the radio control unit.
2. Teach-in the radio outlet
3. Configure the annunciator.
Annunciator type Radio Switch
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Establish connection with the radio control unit
As soon as you generated an annunciator type radio switch, VibroMetra tries to establish a connection with
the radio control unit automatically. To check the connection, double click on the higher-level entry radio
switch. A control window for the connection with the radio control unit will open.
As a condition for a successful connection you need to install the driver for the radio control unit FHZ 1000
PC and connect the radio control unit to the PC.
Connection chart
The connection status between VibroMetra and the radio control center is shown in a connection
chart.
Connected status
Unconnected status
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Establishing a connection
By clicking this button you connect VibroMetra to the radio control center. You can see whether a
connection has been established or not in the connection chart and in the journal.
Protocol
The connection attempts to the radio control center and the result are listed up here as well as
entries for switching processes.
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Teaching in the radio outlet
The radio-controlled outlet needs to be programmed for the channel in use (out of 16). There is a teachin function for this purpose in the setup panel of the radio switch annunciator. This function is only visible
if the connection between annunciators and instruments was interrupted by the central switch "Stop all
annunciators".
Connection chart
The connection status between VibroMetra and the radio control center is shown in a connection
chart.
Unconnected status
Connected status
For teaching in the radio outlet a connection between VibroMetra and the radio control unit needs to
be established.
Connect again
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If the connection has been interrupted (e.g. because the USB cable has been removed), you can
establish the connection again by clicking this button.
Connection status
This entry shows the successful connection.
Protocol
The connection attempts to the radio control unit and the result are listed up here as well as entries
for switching processes.
Teaching in the radio outlet
• Select the channel you want to use for communication
• Plug-in the radio outlet
• Press the button at the radio outlet for 15 seconds. A flashing LED in the button indicates the
active teach-in mode.
• Click Teach-in
• The radio outlet LED stops flashing, programming was successful.
• Select a channel for the radio outlet.
Teaching in the radio outlet
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Configuration of a radio switch
Each radio switch can be configured individually.
Status bar
The status bar indicates
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operating mode
last command
number of sent commands
number of errors occured when sending commands
Reset counter
This button zeros the counter for the errors.
Switching behavior
In this area, you decide at which state the output is to switch on. The output switches off if the
connected instrument shows a different state.
Hold time
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You can enter a minimum hold time after switching on to make sure that slower successive devices
are able to recognize the switching state.
Channel selection
channel.
Selection of the transmission channel. The settings are valid for all radio switches on this
Configuration of a radio switch
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Control panels
The VibroMetra Online control panels explained below are for global settings of VibroMetra.
Tabs
By means of the tabs you switch among the control panels:
Displaying
Signal
processing
Workspace
Raw data
Placeholder
System
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Settings for refresh, arrangement of windows and language.
Settings for filter slope and dB references.
Saving arrangements and configurations of instrument windows.
Recording of sensor signals with full information content.
Placeholders as variable components in file names.
Information about the VibroMatrix system.
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Displaying
In this control panel, you adjust global displaying settings.
Refresh rate
VibroMetra works with a streaming technique. From the time an instrument is started to the time
it is stopped, there is a continuous stream of measuring data. There are no interruptions when
processing the measured values: Every single sample is transmitted to the instruments to be
processed.
The refresh rate determines how many times per second the measurement data is transmitted to
the instruments so that they can refresh their displays. VibroMetra distinguishes between numeric
displays (characteristics) and graphic displays (raw data). Graphic displays require a high quality
and thus a faster refresh than numeric displays which are analyzed quantitatively.
Views
VibroMetra allows to start and operate many instruments at the same time. If the number of
instruments is too large to be displayed on your screen, they can be grouped in so called views.
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Therefore, you minimize all instruments which are not to be visible in a view.
Arrange the other instruments on the screen in a suitable way.
Enter a name for the view in the drop-down list.
Save the view by pushing the 'Save' button.
Proceed in a similar way for other groups of instruments.
Displaying
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If you select a view from the list, the instruments will be shown on the screen or will be minimized
like they were at the time when the view was saved. By simply selecting a view you can switch
quickly from one group of instruments to another group. The minimized instruments keep on
working in the background, which means that they show their data as soon as they are called up.
To ensure a smooth working we recommend to deactivate effects and animations for minimizing
and maximizing windows. You find these settings in the system control of Windows.
Show annunciator management
Activate this checkbox to show the annunciator management.
Only a part of users works with annunciators. That is why they are not shown by default.
Show signal processing settings
Activate this checkbox to show the signal processing settings. These settings require an advanced
knowledge in the field of signal processing so that this control panel is not shown by default.
Magnetic function active
VibroMetra allows the operation of many instruments at the same time.
The magnetic function supports you when arranging instrument windows on the screen. The edges
of the windows are magnetically pulled to other edges when approaching them. Magnetic areas are
the edges of the screen and the edges of other instruments, but not the control center. By means
of the magnetic function you can arrange instruments quickly without using the mouse for fine
positioning.
VibroMetra always on top
Activate this checkbox to display the VibroMetra Online and its
administration windows on top of the instruments.
Language selection
Here you select the language for VibroMetra. System, German, English are available. The default
setting is System. It means that VibroMetra automatically detects the Windows language setting
when starting the VibroMetra Online and uses this language. If the detected language is not
available, VibroMetra automatically uses German.
When switching the language, all instruments are automatically closed and re-opened.
Consequently, switching the language during the measurement causes a loss of data in the
instruments. So do not switch the language during the measurement if you want to keep the data.
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Signal processing
The signal processing settings are only visible after you activated them in the displaying settings.
Filter slope
The filter slope determines how much VibroMetra attenuates the magnitudes of instruments with
freely adjustable filters outside the pass band. The pass band is limited by means of the fmin and
fmax settings in the instruments (example). The higher the filter slope, the stronger the separation
between pass band and cutoff region.
The filter slope is set to 60 dB/decade by default. It means that vibrations at a frequency 10 times
higher than fmax or 1/10 of fmin are attenuated to one thousandth of their original magnitude. A
filter slope of 60 dB/decade corresponds to specifications in standards, e.g. DIN ISO 2954 which
standardizes measurement equipment for vibration measurement on rotating machinery acc. to ISO
10816.
The filter slope can be set up to 1280 dB/decade. A high filter slope can be useful when
extracting single frequencies from a mix of periodical signals. In contrast, a high filter slope can be
disadvantageous with transient signals, e.g. shocks, because the filter reacts with longer duration
transients depending on the selected lower limit frequency fmin..
The type of bandpass filter used in VibroMetra is Butterworth. This type of filter does not show
ripples in the pass band of the amplitude frequency response. It is also stipulated in standards for
vibration measurement equipment (DIN 45662, DIN ISO 2954).
The filter slope does not influence instruments which are directly measuring acc. to a certain
standard. For instance, the filter slope of measuring equipment for building vibration is set to a fix
value of 40 dB/decade according to DIN 4150-3. So this slope is integrated in the instrument VMSTRUC and it is not influenced by the global filter slope setting.
Signal processing
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Decibel reference
The measurands vibration acceleration, velocity or displacement can be displayed in absolute units,
but also as reference measurand. In case of displaying as reference measurand, the measured
value is displayed as percentage of a fixed reference value. These reference values can be entered
for:
• a: vibration acceleration
• v: vibration velocity
• x. vibration displacement
The default values are based on standard specifications but they can be adjusted.
VibroMetra uses the logarithmic dB scale as unit for the reference measurand.
Corner frequencies
Limit to corner frequencies of M302/M312
The limit frequencies for bandpass filter can be adjusted freely in many VibroMetra instruments.
However, there are restrictions by the measurement hardware (M302/M312). For the M312 these
limits are 0.1 to 40 000 Hz, for the M302 0.3 to 2000 Hz.. The restriction to the corner frequencies
(resp. cutoff frequencies*) is the default setting.
Warn if corner frequencies of M302/M312 are exceeded
For special analysis, it can be useful to set the the limit frequencies in the bandpass filter beyond
the corner frequencies of the measurement hardware. In this case, VibroMetra will allow the
bandpass filters for fmin to be below the lower limit frequency of the measurement hardware. In this
case, the input field will be colored yellow as a warning.
* Cutoff frequency is the limit frequency with an amplitude attenuation of -3 dB.
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Workspaces and templates
VibroMetra can operate combinations of different instruments. These instruments can be configured and
placed on the screen individually. This way, you can adapt VibroMetra to every measurement task optimally.
To be able to use a configuration again for the same or similar measurement tasks, you can save it as
workspace. A workspace contains information about all opened instruments, their configuration and the
configuration of the InnoMaster.
Templates are working in a similar way. But they contain a more general description of a workspace and thus
can be used in a more flexible way.
For instance, the serial numbers of the M302/M312 in use are saved in a workspace. So if you open a
workspace again, exactly the same measuring channels will be used even if you are working with more
devices now. In contrast, templates only contain general information about the used devices. By means
of templates, you can exchange configurations with measurement teams that use other PCs and USB
interfaces with different serial numbers. It is also possible to start the VibroMetra Simulator without using
measurement hardware, configure a template there and use it in VibroMetra Online with real measurement
hardware.
Open workspace
By clicking on this button, you open a window for selecting a workspace or a template to be loaded.
Save workspace
By clicking on this button, you save your current configuration with the name of the currently used
workspace.
However, a confirmation request will open to avoid accidental overwriting.
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Save workspace as...
By clicking on this button, you open a window for saving workspaces and templates. You can enter
a new file name.
Delete workspace
By clicking on this button, you open a window for selecting a workspace or template to be deleted.
Currently used workspace
This field shows the currently used workspace.
Load last workspace
If you activate this option, VibroMetra will open at start the workspace that was in use before the
program was closed last time.
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Open workspace or template
All available workspaces are listed up so that you can select the one to be opened. If you click on a
workspace in the list, a respective description is shown on the right.
Selection Workspaces / Templates
You can open a workspace or a template. If you open a template, VibroMetra generates a
workspace from it. Since a template contains only general information about measuring channels
and accelerometers, you should check whether the generated workspace corresponds to your
requirements.
The layout of the control panels for workspaces and templates is identical.
Description
You can enter a description of a workspace or template when saving it. This description is shown
here.
Open workspace or template
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List of workspaces
This list contains all saved workspaces.
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Save workspace or template with new name
To use a configuration repeatedly, save it with a new name. You can enter a description as well.
Selection Workspaces / Templates
You can save a workspace or a template. The layout of the control panels for workspaces and
templates is identical.
List of workspaces
The list contains all saved workspaces.
Name of the new workspace
You can enter a new name for the workspace to be saved.
Description of the workspace
This field shows the description of the workspace or template.
Save workspace or template with new name
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Take over description
Transfers the existing description into the field for the new description. The text is positioned after
the new description (if already existing). So VibroMetra does not overwrite existing texts.
Division
Divides the space between the input fields for existing and new description.
New description
In this field, you can enter a new description to be saved with the workspace or template.
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Delete workspace or template
All available workspaces are listed up so that you can select the one to be deleted. If you click on a workspace
in the list, a respective description is shown on the right. Click on OK to delete the selected workspace.
Selection Workspaces / Templates
You can delete a workspace or a template. The layout of the control panels for workspaces and
templates is identical.
List of workspaces
The list contains all saved workspaces.
Description
This field shows the description of the workspace or template.
Arbeitsplatz oder Vorlage löschen
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Record raw data
VibroMetra offers the recording of raw measurement data. The unprocessed data stream from the M302/
M312 devices is recorded into a file with full information content before it is transmitted to the software
instruments. You can replay this data later with VibroMetra Offline and analyze it offline. In VibroMetra Online
you determine whether raw data is to be recorded and where the files are to be saved.
VibroMetra generates files with a maximum file size of 2 GB. After a file reached the maximum size, a new
file is opened automatically. The name for the new file is the file name used so far followed by an index.
Raw data recording not only includes the measured data, but also additional information:
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Gain of each measuring channel
Connected sensor of each measuring channel
Clock time
Comments
Activate/deactivate raw data recording
By this checkbox, you activate raw data recording. But VibroMetra only starts recording when
instruments are working on the measuring channels and only saves raw data of channels that are
currently measuring.
If all instruments are stopped, VibroMetra keeps on writing into the raw data file. However, no raw
data is recorded any longer, but additional information like clock time.
Free disc space
Indicates free disc space.
• If raw data recording is deactivated, the free disc space is stated in units like MB, GB etc.
• If raw data recording is activated, free disc space in stated in time units. This value is refreshed
continuously.
File name
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You can enter a file name for the raw data in this field, optionally preceded by a directory. If you
enter no directory, the raw data will be saved in the VibroMetra directory, sub-directory Data.
Furthermore, you can also use placeholders.
You can also select the storage location in the file system by means of file dialog:
Enter comments
According to experience, a measurement task often requires comments, e.g. about the
measurement conditions. In VibroMetra Online, such comments can be entered directly into an
input field and they are recorded with the measurement data stream. All comments are time
stamped automatically and displayed again with their time stamp when replaying measurement
data in VibroMetra Offline.
• Activate raw data recording (checkbox Record raw data info file) to save comments.
• Enter a text into the input field for comments.
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Save the text in the data stream by pushing the Enter key or by clicking on the button
.
• Afterwards, the text turns grey to signal that it has been already saved. But it can still be edited
and as soon as you change a single character, the text turns black again.
File currently used for recording
This field indicates the storage location incl. directory name and entered placeholders.
Record raw data
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Placeholders
Placeholders can be integrated into file names, which are used in different instruments of the VibroMetra
system (example). Additional to fixed built-in placeholders you can also enter 5 individual ones. At the moment
the file is saved the placeholders are filled with their current values and are part of the file name then.
Built-in placeholders
These placeholders are already integrated in VibroMetra. They
are listed up again for explanation.
User placeholders
You can enter individual values for the placeholders %0 .. %4.
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System information
Global system information and settings for the VibroMetra system.
Tabs
System information and settings are distributed to three control panels:
Info
Information about the version of the program.
Settings
Settings e.g. concerning the log file.
Log
Special states of the VibroMatrix system (for instance, start/stop are listed
here)
System information
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System information
This panel provides information about the version of the VibroMetra system.
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System settings
Log file
You can activate the logging of internal states and events into a file to analyze the behavior of
VibroMetra in special situations.
Error response
VibroMetra works with a continuous data stream. From start to stop, every single sample is transmitted
to the instruments for analysis. But if the PC is not able to cope with the data stream (CPU load
permanently exceeds 100%) , there will be interruptions which are not in accordance with VibroMetra's
way of working.
In this case, VibroMetra usually simply stops measuring to signal the problem. Just click on Stop/Start
to continue the measurement.
For unattended measurements, you can instruct VibroMetra to restart the measurement automatically
after overload.
System settings
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Event log
This panel lists up internal states and events in the VibroMetra system.
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Event log
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