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____________________________
Operating Instructions
Data Logger
ALMEMO
®
2890-9
V3.5
11.09.2015
www.ahlborn.com
1. Operating Controls
1. OPERATING CONTROLS
(8) Operating keys
, ,
F1 ... F4
Function selection, input
Function keys (soft keys)
PROG
Programming
Last measuring menu
Rear of device
(9) Rechargeable battery pack
6 AA NiMH rechargeable batteries, 7.2 volts
(10) Folding stand / hook
(1) ON / OFF switch
Up ON
- ON
Down OFF
- OFF
(2) Meas. inputs M0 to M8
M0 ... M8 for all ALMEMO -Sensors
M10...M38
31 additional channels
(3) Output sockets A1, A2
A1 Interface/optic fiber (ZA1909-DK5/L)
RS 422 (ZA 5099-NVL/NVB)
Ethernet (ZA 1945-DK)
Bluetooth (ZA 1709-BTx)
Analog output 1 (ZA 1601-RK)
A2 Network cable (ZA1999-NK5/NKL)
SD card connector (ZA1904-SD)
Trigger input (ZA 1000-ET/EK)
Relay outputs (ZA 1000-EGK)
Analog output 2 (ZA 1601-RK)
(4) Check lamps
SLEEP SLEEP mode
Charge Batteryrecharge
(5) Socket DC 12volts
Mains adapter(ZB1112NA10, 12Vvolts, 2 A)
Charging adapter (ZA 2690-LA, 12V)
DC -Cable isolat. (ZB 2590-UK, 10-30V)
(6) LCD
Status line:
C
©
, ll
REC
COM l©
,
©l
R01
*
,
*
Cont
.
measuring point scan
Measurement Start, Stop
Memory record
Output of meas. values
Meas. start, end programmed
Alarm relay status
Light on, pause
Battery operation/charge status
13 lines for functions
Function of keys F1, F2, F3, F4
(7) Thumb-wheel
M▲▼
Measuring poin t
P
►,
F
▲▼
Function selection
P
►, ▲▼, ►
Data input
2 ALMEMO ® 2890-9
Table of Contents
2. TABLE OF CONTENTS
1. OPERATING CONTROLS..........................................................................2
3. GENERAL...................................................................................................6
3.1 Guarantee............................................................................................6
3.2 Extent of the Delivery .........................................................................7
3.3 Waste disposal....................................................................................7
4. SAFETY INSTRUCTIONS..........................................................................8
4.1 Special notes on use...........................................................................9
4.2 Handling batteries / rechargeable batteries correctly......................9
5. INTRODUCTION.......................................................................................10
5.1 Function Range of the ALMEMO 2890-8..........................................10
5.1.1 Sensor Programming.................................................................11
5.1.2 Measurement.............................................................................12
5.1.3 Process flow control...................................................................13
6. INITIAL OPERATION................................................................................15
7. POWER SUPPLY.....................................................................................16
7.1 Rechargeable battery operation
and supply voltage monitoring........................................................16
7.2 Mains Operation................................................................................16
7.3 External DC Voltage Supply.............................................................17
7.4 Sensor Supply...................................................................................17
7.5 Switch On/Off, Reinitialisation.........................................................17
7.6 Data buffering....................................................................................17
8. CONNECTION OF THE TRANSDUCERS................................................18
8.1 Transducers.......................................................................................18
8.2 Measuring inputs and Additional Channels....................................18
8.3 Isolation.............................................................................................19
9. DISPLAY AND KEYPAD..........................................................................20
9.1 Display and Menu Selection.............................................................20
9.2 Function Keys ...................................................................................21
9.3 Control Symbols................................................................................21
9.4 Function Selection............................................................................22
9.5 Data Entry..........................................................................................22
10. MEASURING USING MEASURING-MENUS...........................................23
10.1 Measuring with one Measuring Point............................................24
10.1.1 Selecting the Measuring Point..................................................24
10.1.2 Peak Value Memory with Time and Date..................................24
10.2 Correction of the Meas. Value and Compensation ......................25
10.2.1 Setting the Meas. Value to Zero...............................................25
10.2.2 Zero Point Adjustment .............................................................26
ALMEMO ® 2890-9 3
2. Table of Contents
10.2.3 Sensor Adjustment in the case of chemical sensors................26
10.2.4 Two-point Adjustment with Setpoint Entry................................27
10.2.5 Temperature Compensation ....................................................28
10.2.6 Atmospheric Pressure Compensation......................................28
10.2.7 Cold Junction Compensation....................................................29
10.3 Measuring point scans and Output...............................................29
10.3.1 Single Output / Storage of all Measuring Points.......................29
10.3.2 Cyclic Output / Storage of all Measuring Points........................30
10.3.3 Memory space, Memory Output, Clearing the Memory............30
10.3.4 Output of Menu Functions........................................................31
10.3.5 Displaying Measured Values as a Line Diagram .....................31
10.4 Averaging.........................................................................................32
10.4.1 Damping of Meas. values by a Sliding averag. window............33
10.4.2 Averaging Mode.......................................................................34
10.4.3 Averaging over Manual Single Measurements.........................34
10.4.4 Array Measurement..................................................................35
10.4.5 Averaging over the Measuring Time, Meas. duration...............35
10.4.6 Measurement Time, Measuring duration, Timer.......................36
10.4.7 Averaging over the Cycle..........................................................36
10.4.8 Averaging over several Measuring Points................................37
10.4.9 Volume Flow Measurement......................................................38
10.5 Display of Several Measuring Points ............................................39
10.5.1 Menu Multi Channel Display and Bar chart...............................39
10.5.2 Differential Measurement.........................................................40
10.5.3 Menu List of Measuring Points.................................................40
10.6 Assistant-Menus for Special Meas. Operations............................41
10.6.1 Thermal Coefficient..................................................................41
10.6.2 Wet Bulb Globe Temperature...................................................42
10.7 User Menus......................................................................................42
10.7.1 Functions..................................................................................43
10.7.2 Configuration of the menus .....................................................44
10.7.3 Function Printouts....................................................................45
11. PROGRAMMING WITH PROGRAMMING-MENUS.................................46
11.1 Times and Cycles............................................................................46
11.1.1 Time and Date .........................................................................46
11.1.2 Cycle with Storage Activation and Output Format....................46
11.1.3 Conversion Rate, Continuous Measuring Point Scan...............47
11.1.4 Start date and time-of-day, end date and time-of-day,
measuring duration ..................................................................48
11.2 Data Memory for measured values................................................49
11.2.1 Memory connector with SD card ..............................................49
11.2.2 Data Acquisition.......................................................................50
11.2.3 Numbering of measurements...................................................51
11.2.4 Starting and Stopping of measurements..................................51
4 ALMEMO ® 2890-9
Table of Contents
11.2.5 Scanning mode........................................................................51
11.2.6 Memory Output.........................................................................53
11.3 Sensor Programming......................................................................54
11.3.1 Selecting the Input Channel......................................................54
11.3.2 Measuring Point Designation....................................................55
11.3.3 Averaging Mode.......................................................................55
11.3.4 Locking the Programming of the Sensor..................................55
11.3.5 Limit Values..............................................................................56
11.3.6 Scaling, Decimal Point Setting..................................................56
11.3.7 Correction Values.....................................................................57
11.3.8 Changing the Dimension..........................................................57
11.3.9 Selecting the Measuring Range................................................57
11.3.10 Function Channels .................................................................60
11.3.11 Special meas. ranges, linearization, multi-point calibration.....61
11.4 Special Functions............................................................................62
11.4.1 Print Cycle Factor.....................................................................62
11.4.2 Minimum Sensor Supply Voltage..............................................62
11.4.3 Limit Value Responses.............................................................63
11.4.4 Analog Output Start and End....................................................64
11.4.5 Output Function........................................................................64
11.4.6 Reference Channel 1................................................................65
11.4.7 Reference Channel 2 or Multiplexer.........................................65
11.4.8 Element Flags..........................................................................65
11.5 Device Configuration......................................................................66
11.5.1 Device Designation...................................................................66
11.5.2 Device Address and Networking...............................................66
11.5.3 Baud Rate, Data Format...........................................................67
11.5.4 Language.................................................................................67
11.5.5 Lighting and Contrast...............................................................67
11.5.6 Atmospheric Pressure..............................................................67
11.5.7 Hysteresis.................................................................................68
11.5.8 Operating Parameters..............................................................68
11.6 Output Modules...............................................................................68
11.6.1 Data cable................................................................................69
11.6.2 Relais trigger modules..............................................................69
11.6.3 Analog Output..........................................................................71
11.7 Menu Power Supply........................................................................72
11.8 The locking and calibration menu (option KL) ............................73
12. TROUBLESHOOTING..............................................................................74
13. DECLARATION OF CONFORMITY.........................................................75
14. APPENDIX................................................................................................76
14.1 Technical Data ................................................................................76
14.2 Product overview ...........................................................................77
ALMEMO ® 2890-9 5
2. Table of Contents
14.3 Keyword index.................................................................................78
14.4 Your contact....................................................................................82
3. GENERAL
Congratulations for buying this innovative ALMEMO the patented ALMEMO ®
® data logger. By means of connectors the device configures itself and with the help of menus and help windows the operation should not be too difficult. However, the device allows the connection of a great variety of sensors and peripherals with many special functions. For getting to know the function range of the sensors and the diverse possibilities of the device, you really should read these operating instructions and the corresponding chapters of the ALMEMO ® manual. This is the only way to avoid operating and measuring errors as well as damages of the device. For a quick answer to all questions, a detailed keyword index is provided at the end of the instructions and of the manual.
3.1 Guarantee
Every device has to pass through several quality tests before leaving the works. For a perfect function, a guarantee of two years from the delivery date is granted. Before sending back the device, please pay attention to the indica-
tions in chapter 12. Troubleshooting. Should there actually be a defect, please
use the original packing material for depatch if possible and enclose an expressive description of the trouble in connection with the corresponding circumstances.
In the following cases a guarantee benefit is excluded:
After forbidden operations and changes in the device by the client
Operating in surrounding conditions that are not valid for this product
Using unsuitable power supply and peripherals
Using the device in a way it is not determined for
Damages through electrostatic discharge or flash of lightning
Not paying attention to the operating instructions
Changes in the product features in favour of technical progress or due to new components are reserved to the producer.
6 ALMEMO ® 2890-9
Extent of the Delivery
3.2 Extent of the Delivery
While unwrapping the delivery, pay attention to damages of the device and to its completeness:
A
LMEMO ® 2890-9 measuring instrument, with rechargeable battery pack, folding stand / hook, and mains adapter , these operating instructions,
ALMEMO ® Manual,
CD with Software AMR-Control and useful accessories
In case of a transportation damage, the packing material is to be kept and the supplier is to be informed immediately.
3.3 Waste disposal
The pictogram showing a waste bin crossed through means that the product is subject to European Union regulations on segregated waste disposal. This applies both to the product itself and to any accessories marked with the same symbol. Disposal of any such item as unsorted domestic waste is strictly forbidden
•
•
•
•
•
Please dispose of all packaging materials according to the applicable national waste management regulations.
Please dispose of cardboard boxes, protective plastic packaging materials, and all preservative substances separately and in the proper manner.
The disposal of the device itself (also of device parts, accessories, and consumables) is subject to the applicable national and local waste management regulations and to the environmental protection legislation in force in the country of use.
Please dispose of all waste in the proper manner; this applies in particular to all parts and substances that constitute a hazard for the environment. This includes inter alia plastics, batteries, and rechargeable battery packs .
When disposing of goods, please wherever possible use the original packaging materials.
ALMEMO ® 2890-9 7
4. Safety instructions
4. SAFETY INSTRUCTIONS
DANGER Danger to life and limb, risk of damage to equipment
Read the instructions carefully before starting to operate the device.
Please ensure that you comply with all general safety advice and the special safety instructions included in other chapters.
Such risks may occur in the following circumstances :
•
•
•
•
•
•
Failure to heed the operating instructions and all the safety notes these contain
Any form of unauthorized tampering or alteration inside the device
Use of the device in environments or conditions for which it is not suited
Use of the device with an unsuitable power supply and / or in conjunction with unsuitable peripheral equipment
Use of the device for any purpose other than that for which it is intended
Damage caused by electrostatic discharge or lightning.
DANGER Risk of fatal injury caused by dangerously high voltage
Such risks may occur in the following circumstances :
•
•
•
•
Use of the device with an unsuitable power supply and
/ or in conjunction with unsuitable peripheral equipment
Damage caused by electrostatic discharge or lightning
Do not run sensor lines in the vicinity of high-voltage power cables.
Before you touch any sensor lines, ensure that all static electricity has been discharged.
DANGER Warning - explosive atmospheres or substances
In the vicinity of various fuels or chemicals there is a risk of explosion.
Do not use the device in the close vicinity of blasting work or filling stations!
8 ALMEMO ® 2890-9
Special notes on use
4.1 Special notes on use
•
•
•
•
If the device is brought into the work-room from a cold environment there is a risk that condensation might form on the electronics. In measuring operations involving thermocouples pronounced changes in temperature may cause substantial measuring errors. You are advised therefore to wait until the device has adjusted to the ambient temperature before starting to use it.
Before using the mains adapter make sure that the mains voltage is suitable.
Be sure to observe the maximum load capacity of the sensor power supply.
Sensors with their own integrated power supply are not electrically isolated from one another
4.2 Handling batteries / rechargeable batteries correctly
When inserting batteries / rechargeable batteries ensure that these are correctly polarized.
If the device will probably not be needed for a relatively long period of time or if the batteries are empty, remove the batteries; this will prevent battery acid leaking onto the device and damaging it.
Rechargeable batteries should be recharged as and when necessary.
You should never attempt to recharge an ordinary (nonrechargeable) battery; it may explode !
Batteries / rechargeable batteries must never be short-circuited or thrown onto the fire.
Batteries / rechargeable batteries are special waste and must not be discarded together with normal domestic waste.
ALMEMO ® 2890-9 9
5. Introduction
5. INTRODUCTION
The data logger
ALMEMO
®
uct range of measuring devices that are all equipped with the ALMEMO
ALMEMO
®
2890-9 is a new instrument from the unique prod-
®
connector system, which has been patented by Ahlborn GmbH. The intelligent
connector provides important advantages with regard to the connection of sensors and peripherals as all parameters are stored in an EEP-
ROM within the connector. As a result, the programming that usually has to be performed for the connection is not required. All sensors and output modules can be connected to all ALMEMO
®
measuring devices in the same way. The operation and programming is identical with all units. Therefore, all of the
ALMEMO
®
measuring system items listed below are described, in detail, in a separate ALMEMO
®
manual that is supplied with every device:
Detailed description of the ALMEMO
®
system (manual section 1)
Overview of the device functions and measuring ranges (manual section 2)
All sensors with basic principles, operation, technical data (man. section 3)
The options for connecting existing sensors (manual section 4)
All analog and digital output modules (manual section 5.1)
The interface module RS232, fiber optics, Centronics (manual section 5.2)
The entire ALMEMO
®
networking system (manual section 5.3)
All functions and their control via the interface (manual section 6)
A complete interface command list with all print outputs (manual section 7)
These operating instructions only cover features and controls that are specific for a certain device. As a result, many sections will often provide a note referring to the more detailed description within the manual (man. sect. x.x.x).
5.1 Function Range of the ALMEMO 2890-8
The ALMEMO
®
2890-9 data logger has 9 electrically isolated measuring inputs
- suitable for all ALMEMO
®
sensors. The measuring possibilities are virtually unlimited; there are 36 channels in the sensor connectors and 4 device-internal function channels - with over 70 measuring ranges. For operation purposes the device incorporates an LCD graphics display, a thumb-wheel, and a soft-key keypad with cursor block. User menus can be configured to adapt the display for any application. The data logger function is carried out by a real time clock and a 512kB EEPROM memory for approximately 100000 measured values.
Two output sockets allow for connecting any ALMEMO
®
output modules, for example, the digital interface, memory card, analogue output, trigger input or alarm contacts. Several devices can be networked by simply connecting them with network cables.
10 ALMEMO ® 2890-9
Function Range of the ALMEMO 2890-8
5.1.1 Sensor Programming
The measuring channels are automatically programmed by the ALMEMO
® connectors. However, the user can easily complete or modify the programming via keyboard or via interface.
Measuring Ranges
There are corresponding measuring ranges for sensors with a non-linear characteristic such as 10 thermocouple types, Ntc and Pt100 sensors, infrared sensors, and flow sensors (rotating vanes, thermoanemometers, pitot tubes).
Humidity sensors are available with function channels that also calculate humidity data such as dew point, mixture ratio, vapour pressure and enthalpy.
Even complex chemical sensors can be used. The acquisition of measured data from other sensors is easily possible by using the voltage, current and resistance ranges with individual scaling in the connector. Existing sensors can be used without problems. Only the corresponding ALMEMO
®
connector has to be connected using its terminals. Furthermore, there are adapter connectors with an own microcontroller for digital signals and for measuring frequencies and pulses. This way, nearly all sensors can be connected to any ALMEMO
® measuring instrument and are interchangeable without requiring any settings.
Function Channels
Maximum, minimum, average values and differences of certain measuring junctions can be programmed as function channels, also in device internal channels, and can be processed and printed like normal measuring junctions.
Furthermore, function channels for special measuring tasks are provided to determine the temperature coefficient Q/
D
T and wet bulb globe temperature.
Dimension
The 2 digit dimension can be altered for each measuring channel so that the display and the printout will always indicate the correct dimension, for example when a transmitter is connected. The conversion from °C to °F is automatically performed according to the dimension.
Name of Measured Values
For identification of the sensors a 10-digit alphanumeric name is provided. It is entered via the keypad or the interface and appears on the display, the printout or the computer display.
Correction of Measured Values
For correcting measured values a zero point and slope correction can be applied to the measured value of each measuring channel. This also allows for sensors to be interchanged that usually, at first, require an adjustment (expansion, force, pH). The zero point and the slope correction are virtually performed by the push of a button.
Scaling
The base value and the factor allow for a further scaling of the corrected measured value of each measuring channel for zero point and slope. The decimal
ALMEMO ® 2890-9 11
5. Introduction point position can be set by the exponent. By setting to zero and entering the nominal value the scaling values can be automatically calculated.
Limit Values and Alarm
Two limit values (1 max and 1 min) can be set for each meas. channel. If a limit value is exceeded alarm contacts, that can be individually allocated to limit values, are provided by means of relay output modules. As a standard, the hysteresis is set to 10 digits; however, it can also be adjusted between 0 and
99 digits. Furthermore, limit value exceeding can also be used to start or stop a data logging.
Sensor Locking
All sensor data stored in the EEPROM of the connector can be protected against undesired access by means of a graded locking function.
5.1.2 Measurement
A total of up to 36 meas. channels are available for 9 transducers, i.e. it is also possible to evaluate double sensors, individually scaled sensors, or sensors with function channels. The meas. channels can be successively selected forwards or backwards via keypad. By default all measuring points are scanned continuously at a measuring rate of 10 mops and the data thus obtained is listed in the display. However, if you want to have the measured values for the selected channel sent to an analog output, it may be an advantage to use semi-continuous mode instead; the output value will then always be refreshed at half the measuring rate set - irrespective of the number of measuring points involved.
Measured Values
The measured values of 1 to 20 measuring points can be indicated on the display in different menus (that can also be configured) in three font sizes, as bar graph or as line chart. They are automatically acquired with auto zero and self calibration and can also be arbitrarily corrected and scaled as required. A sensor breakage condition is, with most sensors, automatically detected.
Analog Output and Scaling
By means of analog start and analog end any measuring point can be scaled so that the resulting measuring range covers the full range of the bar graph or line chart or of an analog output (2V, 10V or 20mA). The measured value of any measuring point as well as a programmed value can be output to the analog output
Measuring Functions
Special measuring functions are required for some sensors to achieve an optimal data acquisition. The cold junction compensation is available for thermocouples, a temperature compensation for dynamic pressure and pH and conductivity probes, and an atmospheric air pressure compensation for humidity sensors, dynamic pressure sensors and O2 sensors. With infrared sensors the parameters zero point and slope correction are used for background tem-
12 ALMEMO ® 2890-9
Function Range of the ALMEMO 2890-8 perature and emissivity factor.
Max and Min Value
Each measurement involves an acquisition and storage of the Max value and the Min value including the time and date. The values can be displayed, printed or cleared.
Average Value
Measured values can be expressed as a sliding average obtained by continuous automatic smoothing or averaged over a particular period or cycle or over a series of individual measuring operations.
5.1.3 Process flow control
A continuous measuring point scan with a time-based process flow control for the output of measuring valures is required to register the measuring data of all connected sensors. For this purpose, an output cycle is available and, if fast processing is required, the conversation rate is available. The measurement can be started and stopped by using the keyboard, the interface, an external trigger signal, the real time clock or an exceeding of limit values.
Time and Date
The real time clock with data function or the pure measuring time are used for an accurate recording of any measurement. Start and end time/date can be programmed in order to start or stop a measurement.
Cycle
The Cycle is programmable between 1 s and 59 h, 59 min and 59 s and provides a cyclic output of measured values to the interfaces or memories and also provides a cyclic averaging.
Print Cycle Factor
If necessary, the print cycle factor allows for limiting the data output of particular channels so that an excessice data flow can be limited, especially during data storage.
Average Value over Measuring Point Scans
The measured values resulting from scanning measuring junctions can be averaged as desired either over the total measuring time or over the cycle time.
Function channels are available for a cyclic output and storage of these average values.
Conversion Rate
With the ALMEMO
®
2890-9 all measuring points can be continuously scanned with the conversion rate (2.5;10 or 50 M/s). To realize a high recording speed it is possible to store all measured values in the memory and/or to perform an output via the interface.
Data Memory
During the cycle, all measured values can be manually or automatically stored in an EEPROM. The memory capacity is, as standard, 512 Kilobyte, which al-
ALMEMO ® 2890-9 13
5. Introduction lows up to 100.000 measured values. The memory organisation can be configured as linear or ring memory.The output can be carried out via the display or the interface. It is possible to specify a selection according to a time interval or number. Memory capacity can be increased substantially by means of an external memory connector with a multi-media memory card. With an external memory connector, available as an accessory, files can be read out very quickly via any standard card reader.
Numbering of Measurements
By entering a number, single scans or entire series of measurements can be identified and selectively read out from the memory.
Control Outputs
Via keyboard and interface allows to individually trigger up to 4 output relays and one analog output.
Operation
All measuring and function values can be displayed in different menus on the dot matrix LCD display. 3 user menus can be individually configured from nearly 50 functions for your specific applications. Using texts, lines and blank lines allows to format the printout in an application-specific style. Nine keys
(four of them are soft keys) can be used to operate the device. This also allows you to fully program the sensors, the device and the process control.
Output
All data logs, menu functions and stored measured values and programmed parameters can be provided as output to any peripheral equipment. Various interface cables can be used to provide a RS232, RS422, Centronics or Ethernet interface. The output of measuring data can be selected in list format, columns or spreadsheet format. Files in spreadsheet format can be processed by each spreadsheet software. The print header can be programmed specifically to the company or application.
Networking
All ALMEMO
®
devices can be addressed and can be easily networked by simply linking them using network cables, or RS422 network distributors for longer distances.
Software
The AMR-Control software, which allows for the entire programming of the sensors, the configuration of the measuring instrument, of the user menus and the read-out of the data memory is supplied with each ALMEMO
® manual. The integrated terminal also allows for online measurements. The WINDOWS
® software WIN-Control is available for data acquisition of networked devices, graphical presentation and complex data processing.
14 ALMEMO ® 2890-9
Initial Operation
6. INITIAL OPERATION
Sensor connection
Connect transducers to the sockets M0 to M8 (1),
Power supply
Switch-on
with accumulators or mains adapter on DC (5) s. 7.1, 7.2
Move the left slide switch (1) upwards,
Automatical display of the last measuring menu,
keys
:
Menu selection
MEAS.-Menus: call up with key:
< ESC > or F4
e.g. select menu
StandardDisplay
Call up the menu with key:
Select meas. point
with keys:
Select function
Max/MinVal
with:
Clear max/min values,
,
/
... (
F
)
PROG
/
... (
M
)
,
...
< CLR > or F1
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
MEASURING-Menus:
Standard display ©
U1 Meas. value correction
U2 Averaging
U3 Volume flow
Data logger
Multi channel display
*List of measuring points
Bar charts
Line diagram
_____________________
Menu1 PROGRAMMING-Menus
Menu2 ASSISTANT-Menus
POFF *ON F MENU1 MENU2
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
01:
Velocity m/s
æ » H º
28.67
Maximum value:
Minimum value:
31.34 mls
25.37 mls
Cycle-timer: 00:02:30 Un
Memory free: 512.0 kB
START MANU M PRINT ESC
F1 F2 | F3 F4
ON PROG
F1 F2 | F3 F4
ON PROG
Output of measuring data or memory via interface:
- Connect peripheral device, via data cable, to socket A1 (3), s. man. 5.2
- Set 9600bd, 8 data bits, 1 stop bit, no parity at peripheral device
Single output
/storage,
< MANU > or F2
PROG
,
...
Cyclic measurement:
Select
Cycle-Timer
:
Enter cycle (hh:mm:ss)
Output format list ´ ´, columns ´
n
´, table ´
t
´
Stop programming
Start/stop the cyclic measurement,
Output of memory data
to printer or computer:
Cycle-Timer: 00:05:00 Sn
< FORM> or F3 ...
< ESC> or F4
<START> , <STOP> or F1
Select the function
Memory Free
with:
Memory data output,
Clear memory, s.
PROG
,
...
< PRINT> or F3
< CMEM >
ALMEMO ® 2890-9 15
7. Power supply
7. POWER SUPPLY
Power can be supplied to the instrument in any of the following ways :
Rechargeable battery pack,
NiMH 7.2 volts / 1600 mAh, internal or supplementary ZB 2890-AP
Mains adapter / charge adapter, 12 volts, 2 A
Our product line includes corresponding accessories.
ZB1112-NA10
Power supply cable (10-30 volts DC, 1 A), electr. isol.
ZB 2590-UK
7.1 Rechargeable battery operation
and supply voltage monitoring
The standard power supply used for this device is a rechargeable battery pack with 6 NiMH cells (7.2 volts / 1600 mAh). At a current consumption of approx.
37 mA this will operate for approx. 43 hours. If the lighting is switched on continuously the operating time drops to approx. 16 to 32 hours (depending on brightness). To prolong the operating time for the purposes of long-term recording the device can be left in SLEEP mode. (see 10.2.5). The operating voltage can be checked in the “ power supply
” menu; this gives you a basis for estimating the remaining operating time. (see 10.7). As soon as the remaining battery capacity drops to approx. 10% the
´´µµµµµµµµµ¶
symbol in the status line of the display starts to flash. As and when this happens the battery should be recharged using the mains adapter provided (12 volts, 2 A) (ZB1112-NA10); delay may result in critically low discharge and damage the battery. (see 6.2).
The NiMH rechargeable batteries can in fact be recharged at any time and in any charge status using the intelligent charge circuitry. If the batteries are completely discharged, the device will switch off but measured data and the timeof-day will be maintained in the battery-buffered memory. (see 6.6) To continue operation without having to wait you can replace the discharged battery with a supplementary battery pack (ZB 2590-AP).
When replacing the rechargeable battery pack ensure that type ZB
2890-AP with Ntc is used; the predecessor model of the rechargeable battery packs ZB 2590-AP will not function on this device.
7.2 Mains Operation
To supply the device with power from an external source or to recharge the batteries the mains adapter provided (12 volts / 2 A) (ZB1112-NA10) must be connected at socket DC (5). Please ensure the mains voltage is correct !
When the mains adapter is plugged in the green “ CHARGE ” LED lights up indicating that the batteries are being recharged. After approx. 2.5 hours the batteries are recharged and the LED goes out again; i.e. the charge circuitry has switched over to trickle charge. The mains adapter can thus be left permanently connected to the measuring instrument in buffer mode without risk of overcharging the batteries.
16 ALMEMO ® 2890-9
External DC Voltage Supply
7.3 External DC Voltage Supply
It is also possible to connect another DC voltage (6-12 volts ±5%, minimum
800 mA) to socket DC (5). This must be connected using a low-voltage connector (NES1 as per DIN 42323) with its center pin to minus. If, however, the power supply has to be electrically isolated from the transducers or if a larger input voltage range (10-30 volts) is required, then electrically isolated supply cable ZB 2590-UK must be used. It will then be possible to use the measuring instrument in a 12-volt or 24-volt on-board supply system.
7.4 Sensor Supply
At the terminals + (plus) and - (minus) in the ALMEMO ® connector there is a configurable sensor supply voltage available (self-healing fuse, 500 mA). The sensor is programmed by default to 9 volts (150 mA); it can if necessary be programmed in the power supply
menu to 12 volts (100 mA) instead. (see
10.7) In mains operating mode the sensor voltage is set automatically to 12 volts. Other voltages (12, 15, or 24 volts or references for a potentiometer and strain gauge) can be obtained using special connectors.
(see Manual. Sections 4.2.5 and 4.2.6)..
7.5 Switch On/Off, Reinitialisation
To switch on or off use the slide switch (1) located on the left side of the de vice.
●
● up down
ON
OFF
The measuring menu most recently selected always appears first in the display.
After the device is switched off the real-time clock continues to run and all saved values data and settings are retained intact. (see 6.6).
If interference (e.g. electrostatic) or a malfunction (e.g. battery failure) causes the device to behave abnormally, the device can be reinitialized. You can activate this reset by pressing key F1 r when switching on. You can restore all device programming (including times, device designation, user menus, etc.) to the factory default settings by pressing key F4 when switching on. Only the programming of the sensors in the ALMEMO ® connectors remains unaffected.
7.6 Data buffering
The sensor programming is stored in the EEPROM of the sensor connector, the calibration and the programmed parameter of the device is fail-safe stored in the EEPROM of the device. Time and date are buffered by a lithium battery so that storage of the data is also guaranteed without batteries and when the device is switched off.
ALMEMO ® 2890-9 17
8. Connection of the Transducers
8. CONNECTION OF THE TRANSDUCERS
Any ALMEMO
®
sensors can be connected to the ALMEMO to M8 of the measuring instrument (2). For connecting existing sensors it is only necessary to connect a corresponding ALMEMO
®
®
input sockets M0
connector.
8.1 Transducers
A detailed description of the comprehensive ALMEMO
®
sensor range (see manual section 3) and the connection of existing sensors (see manual section
4) to the ALMEMO ® instruments are provided in the ALMEMO ® manual. All standard sensors with ALMEMO
®
connector usually have the measuring range and dimension already programmed and can be immediately connected to any input socket. A mechanical coding ensures that sensor and output modules can only be connected to the correct sockets. Furthermore, each ALMEMO
® connector has two locking levers that snap in when the insertion into the socket is established and that prevent a disconnection caused by pulling the cable.
Both levers must be pressed on the sides for disconnecting the connector.
8.2 Measuring inputs and Additional Channels
The measuring instrument ALMEMO
®
2890-9 has 9 input sockets (2) that the measuring channels M0 to M8 are initially allocated to. However, ALMEMO
® sensors can, if required, provide up to 4 channels so that 36 channels are available with 5 input sockets. The additional channels can be especially used with humidity sensors with 4 measuring variables (temperature/humidity/dew point/mixture ratio) or used for function channels. If required, the sensor can also be programmed with several ranges or scaling or, depending on the pin assignment, 2 or 3 sensors can be combined in one connector (e.g. rH/Ntc, mV/V, mA/V etc.). The additional measuring channels of a connector are increased in steps of 10 (e.g. the first sensor has the channels M0, M10, M20,
M30, the second sensor has the channels M1, M11, M21, M31 etc.).
Device-internal channels:
An innovation on this device is its four extra additional channels. The first of these M5 is programmed by default as differential channel M1 – M0. This only happens, however, if there are two sensors with the same units and same decimal point position connected at measuring points M0 and M1. However, all four channels can be programmed with any other function channels (e.g. U-
Bat, CJ, average, volume flow, etc.); (s. 11.3.10, man. 6.3.4). Mb1 = M1 and
Mb2 = M0 are always used as reference channels by default.
Advantage
of the device-internal channels: If several sensors are being used for the same application, they do not have to be reprogrammed and can be freely exchanged without losing their function channels. If, however, the whole application operates with just one sensor, then programming in the sensor itself makes more sense.
On the measuring instrument this gives the following channel assignment:
18 ALMEMO ® 2890-9
Measuring inputs and Additional Channels
Sensor channels
4. Channel
3. Channel
2. Channel
1. Channel
30
20
10
00
31
21
11
01
32
22
12
02
33
23
13
03
34
24
14
04
35
25
15
05
36
26
16
06
37
27
17
07
Device internal channels
38
28
18
08
39
29
19
09
Difference M01-M00
M0 M1 M2 M3 M4 M5 M6 M7 M8
8.3 Isolation
When building up a working measuring arrangement, it is very important that there cannot flow any compensation currents between sensors, power supply and peripherals. This is the case when all measuring points are on the same potential or when unequal potentials are electrically isolated.
U+
Data cable
Sensors
DC
M2
DC
M1
M0 electr. isol.
U-
B
A
S
ADC uC
DC
AC
Power supply
DC
DC
230V≈
10..30V=
The 9 analog inputs are electrically isolated from each other by means of photovoltaic relays and - on this device for the first time - also from the device itself and from the power supply by means of optocouplers. Between all inputs and outputs (even the analog output cables which are not electrically isolated) the maximum potential difference permitted is 50 volts. The voltage at the measuring inputs themselves must not exceed 12 volts (between B, C, D, and A).
However, the following are not electrically isolated
: all sensors which are connected to the common internal power supply ±U or combined sensors within one connector. The sensors must themselves be isolated or the device must be operated with an electrically isolated power supply (mains adapter or connecting cable ZA2690-UK with DC/DC converter). For these sensors the electrical isolation must be disabled by means of switch S (see above) or by wire; some inputs would otherwise be left without reference potential. (see
10.5.8) Configuration is by means of element flag 5 ´ ISO OFF ´; this is usually set automatically the first time the device is connected. With certain connectors
(especially divider connectors without power supply) element flag 5 should be checked and if necessary corrected.
Data and trigger cables are also isolated by means of optocouplers.
ALMEMO ® 2890-9 19
9. Display and Keypad
9. DISPLAY AND KEYPAD
9.1 Display and Menu Selection
The display (6) of the measuring instrument ALMEMO 2890-9 consists of a dot matrix LCD display with 128x128 dots, or 16 lines with 8 dots. For the acquisition of measuring data with the required functions and for the programming of the process control, the sensors and the device parameters, 3 categories of
menus are available: Measuring-Menus (s. 10), Programming-Menus (s. 11)
and Assistant-Menus, which can be called up over corresponding selecting menus. Of the 9 measuring menus, there are 3 ´user´ menus U1, U2, U3,
which are freely definable by the user (s. 10.7).
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
MEASURING-Menus:
Standard display ©
U2 Averaging
U3 Volume flow
Data logger
Multi channel display
*List of measuring points
Bar charts
Line diagram
_____________________
* ALMEMO 2890-9 *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
PROGRAMMING-Menus:
Times, cycles
Recording to memory ©
Output from memory
Sensor programming
...Special functions
Menu1 PROGRAMMING-Menus
Menu2 ASSISTANT-Menus
Device configuration
Output modules
Power supply
* ALMEMO 2890-9 *
ASSISTANT-Menus:
Start-Stop
Averaging ©
Volume flow
Function channels
Scaling
Sensor adjustment
Limits, Alarm
_____________________
Wet bulb globe temperature
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Menu2 PROGRAMMIER-Menus
POFF *ON F MENU1 MENU2
If necessary, call up the menu selection using the key:
<ESC>
If necessary, select the desired menu selection with key:
<MENU1>
o.
<MENU2>
Switch on the
Display Lighting
Select the menus using the keys:
Call up the selected menu with key:
<
ON >
or
...
or
PROG
Or, alternatively, the thumb-wheel (7) on the right side of the device can be used, rotating it upwards or downwards and then pressing to confirm.
▲
▼
P ►= PROG
Back to the last meas. menu using the key once:
Back to the last programming menu using the key again:
Back to the menu selection with key:
<ESC>
The device designation in the header line can be as easily pro-
grammed(s. 11.5.1) as the menu titles of the user menus (s.
20 ALMEMO ® 2890-9
Function Keys
9.2 Function Keys
The function of the keys
F1
to
F4
(8)
can be different in the various menus. It is indicated by abbreviations in the bottom line of the display (soft keys). In the manual the soft key abbreviations are set in angle brackets, e.g.
<START>
.
Next to the meas. value, control symbols for the meas.value are displayed
(s. below)
.
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
01:
Velocity m/s
æ » H º
28.67
Maximum value:
Minimum value:
31.34 mls
25.37 mls
Cycle-timer: 00:02:30 Un
Memory free: 512.0 kB
START MANU M PRINT ESC
The following keys are available in the
Standard display
(s.r.) :
F1 F2 | F3 F4
Selection of measuring points
with the cursor keys
(8)
o.
...
Starting
a cyclic measurement
Stopping
a cyclic measurement
Single
manual output
/storage of all measured values
Output
of menu functions via the interface
Returning back
to the menu selection
<START> or F1
< STOP > or F1
< MANU > or F2
< PRINT > or F3
< ESC > or F4
9.3 Control Symbols
Symbols for monitoring the state of the device in the status line:
Continuous measuring point scan:
C
Measurement stopped or started:
Measuring point scan started including storing:
Start/end time of measurement is programmed:
REC
Measuring point scan started incl. output via interface:
COM
Relay status (external output module) off or on:
Display illumination switched on or pause:
Batt./accumulator charge state:100% charged, 50% charged, discharged : ll or l© or ©l
R--
or
R01
* or
*
´´´´´´´´¶
,
©
´´´´´µµµµ¶
,
´µµµµµµµµ¶
flashes
Symbols for checking the measured value (see above)
No sensor, measuring point deactivated: ´ ----´
Measured value altered by sensor correction or scaling: º
Averaging in progress:
Output function altered (s. 11.4.5):
»
D
,
H
,
L
,
M
,
A
Exceeding of limit value Max or Min:
▲
or
▼ flashes
Exceeding of measuring range: display of max. value
O
flashes
Undershooting of meas. range: display of min. value
U flashes
Sensor breakage sensor voltage Lo :display ´-.-.-´
B
flashes /
L
flashes
Supply voltage too low for measurement: display switched off
ALMEMO ® 2890-9 21
9. Display and Keypad
9.4 Function Selection
Each menu consists of a number of functions that, possibly, have to be used or programmed during operation.
Help window
at function selection:
To set measured value to
zero, press key: ZERO
To adjust sensor
in zero point (slope)
press key: ADJ
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
01:
Velocity m/s
æ » H º
28.67
Maximum value:
Minimum value:
31.34 mls
25.37 mls
Cycle-timer: 00:02:30 Un
Memory free: 512.0 kB
Selection of the functions.
First changeable parameter is highlighted
PROG as inverse coloured font on a black bar:
Velocity
In the middle of the softkey line appears for control:
F
Switching to the next function:
Depending on the functions, the keys up
F1
to
F3
or ...
provide corresponding functions, e.g. MaxValue Clear
<CLR>
Meas. value Set to zero, Meas. value Adjust
<ZERO>
/
<ADJ> , PROG
Memory data output
Memory Clear
ZERO ADJ M ESC
<PRINT>
<CMEM>
9.5 Data Entry
If a programm. parameter is selected (s. 9.4) you can enter or clear the value.
Clearing the programmed values
Changing the sign
of numerical values
< CLR >
For programming
, press the key
PROG
Then you are in the
input mode
P in the middle of the softkey line
the cursor flashes below the first cursor position
Cycle-Timer: 00:00:00
Increasing
the selected number with
...
Decreasing
the selected number with
...
< +/- >
Selecting the next position
the cursor flashes below the second digit
Switching back to the previous digit
Cycle-Timer: 00:00:00
Each digit
is programmed analogously to the first one
/
...,
Quitting the data entry
PROG
Cancelling the programming process
<ESC>
Or, alternatively, input can be made using the thumb-wheel (7). To start press
(P), then set value by rotating (▲▼), then press again, etc..
22 ALMEMO ® 2890-9
Measuring using Measuring-Menus
10. MEASURING USING MEASURING-MENUS
After the first switch-on, the device shows the menu
Meas. points list
good overall view over the whole measuring system. This is also where to control, if time and date are right. If not, there is the possibility
to programm them immediately (s. 9.4 and 9.5).
Additionally, you can already see continuously the measured values of all connected sensors and measuring channels. It is even possible to
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Meas.points list: Comment
Time: 12:34:56 Date: 01.01.04
Cycle-timer: 00:00:30 nS
00: 23.12 °C Temperatur
01: 11.37 mls Velocity
02: 123.4 mV U2.4
10: 53.6 %H r.Humidity
20: 15.2 °C Dew point
30: 11.2 glk a.Humidity
assign extra additional functions like comment, range, max values and limits with the cursor keys
or
. If you programm the cy-
cle timer (s. 10.3.2) you can start the first mea-
START MANU F PRINT ESC surement with the key
<START>
and cyclically record the measured values.
If a printer or terminal is connected, all values are also put out online. After selecting the channels, it is also possible to programm measuring points. To select other measuring menus, press key
<ESC>
.
Menu selection
The data logger 2890-9 provides a series of prefabricated measuring menus for a best possible display of the measured values and corresponding function values. They are called up in the selection MEASURING-Menus and differ in the number of measuring points (1 to 20), in the display of measured values in different sizes of the digits (4, 8, 12 mm) or as bar or line chart and in the arrangement of functions.
If this does not come up to your expectations you can arrange the 3 user menus U1 to U3
yourself from over 50 functions (s. 10.7).
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
MEASURING-Menus:
Standard display ©
U1 Meas. value correction
U2 Averaging
U3 Volume flow
Data logger
Multi channel display
*List of measuring points
Bar charts
Line diagram
_____________________
Menu1 PROGRAMMING-Menus
Menu2 ASSISTANT-Menus
POFF *ON F MENU1 MENU2
Call up the menu selection with key:
Select a menu with keys:
Call up the selected menu with key:
<ESC>
or ...
or PROG
The most important functions for controlling the measuring operation are already available in the measuring menus and can be programmed there directly.
For a special programming of the sensors or the device, there are extra PRO-
GRAMMINIG -Menus and for special functions ASSISTANT-Menus .
They are selected with the keys:
<MENU1>
or
<MENU2>
.
ALMEMO ® 2890-9 23
10. Measuring using Measuring-Menus
10.1 Measuring with one Measuring Point
Standard display
The menu
Standard display
shows a measuring point in the largest display with measuring point, comment and dimension. Some symbols serve for the control of the status of measured
values (s. 9.3). The functions maximum and
minimum value are described in 10.1.2, cycle
timer in 10.3.2 and memory free in 10.3.3.
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
01:
Velocity m/s
æ » H
º
28.67
Maximum value:
Minimum value:
Memory free:
31.34 mls
25.37 mls
Cycle-timer: 00:02:30 Un
512.0 kB
START MANU M PRINT ESC
10.1.1 Selecting the Measuring Point
The key
allows for successively selecting all active meas. points including the display of the current meas. value(
M
in the middle of the softkey line). If the key
is pressed, the previous channel is again indicated. By selecting the meas. channel the input channel is, at the same time, also selected.
Increasing the meas. channel using the key:
Decreasing the meas. channel using the key:
● Alternatively, the meas. points can be selected using the thumb-wheel (7).
10.1.2 Peak Value Memory with
Time and Date
The highest and lowest value, including the time and date, will each time be determined and stored from the acquired measured values of each measuring point. The functions listed below are available to display these values, function channels are available put them out
The software AMR-Control can be used to easily load or configure the menu Monitoring with Max/Min times (illustrated on the right) as
Function Maximum Value:
Function Minimum Value:
Function Time and Date of Maximum Value:
Function Time and Date of Minimum Value:
To clear, select function (s. 9.4):
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Time: 12:34:56 Date: 01.01.04
Cycle-timer: 00:00:30 Sn
01: 244.5 °C
NiCr Temperatur » H º
7 Limit max:
Maximum value:
7 Limit min:
250.0 °C
245.7 °C
Maximum time: 12:34 01.02.
Minimum value:
Minimum time:
230.0 °C
224.1 °C
12:56 01.02.
START MANU M PRINT ESC
Maximum Value: 245.7 °C
Minimum Value: 224.1 °C
Max Time: 12:34 01.02.
Min Time: 12:56 01.02.
Maximum Value: 245.7
°C
24 ALMEMO ® 2890-9
Measuring with one Measuring Point
Clear single value wich key: <CLR>
Clear Max, Min and Avg. Values of all channels: <CLRA>
Due to the continuous measurement the current measured value will be immediately displayed after the clearing process. Furthermore, the peak values are cleared at each start of a measurement, if the device has been correspond-
ingly configured (standard setting, s. 11.5.8).
10.2 Correction of the Meas. Value and Compensation
To achieve a maximum accuracy of measurements it is possible to correct the zero point of the sensores in all menus by pushing a button.
Additional correction functions are provided in the ´User Menu´
U1 Meas. Correction
(selec-
tion s. 9.1). By entering a setpoint the correc-
tion value will be automatically calculated and stored in the sensor connector. A corresponding compensation is provided for sensors, which are affected by the ambient temperature or the atmospheric pressure.
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
01: 25.45 m/s
L840 Staurohr º
Locking mode:
Setpoint:
5 Base:
5 Factor:
4 Zero corr:
4 Slope corr:
Temp. comp:
Air. pressure:
3
25.0 mls
-----
0.6891
0.7 mls
-----
245.7 °C
1027 mb
10.2.1 Setting the Meas. Value to Zero
START MANU M PRINT ESC
The user can zero the measured value at certain locations or at certain times in order to check the deviation from this reference value. After selecting the
function Meas. Value (s. 9.4) in any menu, a help window shows you all possi-
bilities of correction of the measured value. The keys <ZERO> , PROG can be used to store the displayed measured value as base value and, as a result, to set it to zero.
Function select
Measuring Value
:
Function
Set Measuring Value to Zero:
Carry out with key:
Measuring Value:
Base Value:
If the function is locked (s. 11.3.4), the base
value is not stored in the connector, but only temporarily in the RAM until switch-off.
00: 23.4 °C
<ZERO>
PROG
00: 00.0 °C º
Base: 23.4 °C
Sensor ist locked
-Zero setting temporarily
press key: PROG
-To cancel press key: ESC
As long as the deviation from the base value is indicated (instead of the actual measured value) the symbol º appears in the display.
The base value must be cleared in order to re-obtain the actual mea-
ALMEMO ® 2890-9 25
10. Measuring using Measuring-Menus
10.2.2 Zero Point Adjustment
Many sensors must be adjusted at least once or at regular intervals to compensate for instabilities. For this purpose, a specific
zero point adjustment
is available, in addition to the ´Set Meas. Value to Zero´ mentioned above, for not influencing the scaling. In this function the zero point error is not stored as base but as
zero point correction
Select function
Measuring Value
:
Function
Zero Point Adjustment
using the key:
00: 01.2 °C
<ADJ>
Carry out with key: PROG
00: 00.0 °C º
Zero Point: 01.2°C
Meas. Value:
Zero Point:
If the function is locked more than 3 (s. 11.3.4),
a help box announces that the function can only be unlocked momentarily for adjustment, for a permanent storage of the correction values in the connector.
Unlock momentarily for adjustment with key:
Sensor ist locked
-Zero setting temporarily
press key: PROG
-To cancel press key: ESC
<FREE>
If a base value has been programmed, the measured value indicated after adjustment is not zero but the negative base value.
In the case of
dynamic pressure probes
the zero-point error is always written temporarily (i.e. until you switch off) to the calibration offset - even if the channel is locked.
10.2.3 Sensor Adjustment in the case of chemical sensors
In the case of the following sensors, with <ADJ>
(s. 10.2.2), you get automati-
cally from the function measured value to the assistant menu Sensor adjustment , for a
two-point adjustment
of
zero point
and
slope
. The corresponding callibration value setpoints are already entered, but can also be changed:
Probe: pH probe:
Type:
ZA 9610-AKY:
Conductivity: FY A641-LF:
FY A641-LF2:
FY A641-LF3:
O
2 saturation: FY A640-O2:
Zero Point Slope
7.00
4.00
pH or
10.00
pH
0.0
0.0
2.77mS/cm
147.0uS/cm
0.0
0
111.8mS/cm
101 %
If required, temperature and air pressure can also be entered here for compensation.
(s. 9.2.5 and 9.2.6)
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Select measuring channel:
01: 7.23 pH pH-Wert
Temp.Compensation: 25.0 °C
Air pressure 1013. mb
Zero point:
Setpoint 1: 7.00 pH
01: 7.00 pH pH-Wert
Slope:
Setpoint 2: 10.00 pH
01: 10.00 pH pH-Wert
Slope error: -10.8 %
START MANU M PRINT ESC
26 ALMEMO ® 2890-9
Correction of the Meas. Value and Compensation
1. Setting up a means of calibration for the zero point:
Select function
Setpoint 1
Zero point adjustment
:
with key:
Setpoint 1: 07.00 pH
<ADJ>
The adjustment meas. value is recorded:
00: 07.00 pH º
In the case of pH probes, the standard values, base value 7.00 and slope -0.1689, can be restored by pressing the key <CLEAR> .
2. Setting up a means of calibration for the slope:
Select function
Setpoint 2
Slope adjustment
: with key:
Setpoint 2: 10.00 pH
<ADJ>
The adjustment meas. value is recorded:
The slope shows approximately:
The
slope error
shows the deviation from the no-
00: 10.00 pH º
Slope: minal value and therefore the state of the probe:
Slope error:
-0.1689
9 %
If the sensors are locked, they can be momentarily unlocked by pressing the key <FREE> .
10.2.4 Two-point Adjustment with Setpoint Entry
In the menu
U1 Meas.Correction
a two-point adjustment is also possible for
other sensors. Additionally to the zero point adjustment 10.2.2 , the slope can
be corrected with a second measuring point using the function
Setpoint
.
Pressing a button, the correction factor is automatically determined and stored in the sensor connector.
1. Zero point adjustment
Set sensor to the
zero state
(ice water, unpressurized etc.),
Set the meas. value to zero by using (s. 10.2.2).
<ZERO> / <ADJ> , PROG
2. Final value adjustment
Put sensor to a defined
setpoint
((boiling water, known weight etc.)
00: 098.7 °C
At
ALMEMO force transducers,
switch on/off the calibration resistor (s. man. 3.6.2) with:
<ON> or <OFF>
Enter the
setpoint
in function ´Setpoint´:
Setpoint: 100.0 °C
Calibrate
the meas. value in function ´Setpoint´: <ADJ>
Afterwards, the meas. val. should indicate the set point.
00: 100.0 °C
If the sensor is locked with 4 or momentarily unlocked with the key
<FREE> , the correction factor is programmed as ´factor´. If the locking level is set <= 3, the correction factor is programmed as
ALMEMO ® 2890-9 27
10. Measuring using Measuring-Menus
10.2.5 Temperature Compensation
Sensors with measured values that are strongly depending on the temperature of the measuring medium are, in most cases, equipped with a specific temperature sensor and the instrument will automatically perform a temperature com-
pensation (s. 11.3.9 measuring range list ´w. PC´). However, dynamic pressure
probes and pH probes are also available without a temperature sensor. If the temperature of the medium deviates from 25°C the following measuring errors must be considered:
e.g. error per 10 °C: Compensation range:
Dyn.press: approx. 1.6% -50 to 700 °C pH probe: approx. 3.3% 0 to 100 °C
Sensor:
NiCr-Ni
Ntc or Pt100
The temperature compensation can either be performed automatically using the reference channel and external temperature sensors or manually by using the function
Temp Comp
e.g. in the menu
Meas.Correction
and entering the temperature:
Entering the compensation temperature in the function
:
Temp Comp: 31.2°C
10.2.6 Atmospheric Pressure Compensation
Some measuring variables depend on the environmental atmospheric pressure
(s. 11.3.9 measuring range list ´w. PC´). As a result, higher deviations from the
normal pressure of 1013mbar can cause corresponding measuring errors:
e.g. error per 100 mbar: Compensation range:
Rel. humidity psychrometer approx. 2% 500 to 1500 mbar
Mixture ratio, cap.
Dynamic pressure
O2 saturation approx. 10% vapour pressure VP to 8 bar approx. 5% 800 to 1250 mbar (error < 2%) approx. 10% 500 to 1500 mbar
Therefore, the atmospheric pressure should be considered (approx.
-11mb/100m over mean sea level, MSL) especially during use in a correspond-
ing height above sea level. It can either be programmed (s. 11.5.6) or mea-
sured with a reference sensor (reference sensor marked with comment ´*P´ s.
man. 6.7.2).
The function
Atmospheric Pressure
can be integrated into any user menu or be set in the standard menu Device Configuration :
Entering the atm. pressure in function ´Atm. Press.´:
AtmPress: 1013. mb
With each reset the atmospheric pressure is set to 1013mb. It can be set to the
current value by the usual data entry (s. 9.5). If it is measured, the measured
value will be displayed.
Please note that the last measured value will be retained when a reference sensor is being disconnected.
28 ALMEMO ® 2890-9
Correction of the Meas. Value and Compensation
10.2.7 Cold Junction Compensation
Cold junction compensation (CJ) for the thermocouples is normally performed completely automatically. On this device, with 5 sockets, to ensure the highest possible degree of accuracy - even in difficult thermal conditions (e.g. thermal irradiation) the socket temperatures are acquired by means of two precision
Ntc sensors in measuring sockets M0 and M8 and then calculated by linear interpolation. The mean cold junction temperature is displayed as an operating
parameter in the device configuration. (s. 10.5.8
It can be incorporated if necessary in measured data acquisition as a device
temperature with function channel "CJ" (s. 11.3.10) Instead of this form of cold
junction temperature measurement it is also possible to use an external measuring sensor (Pt100 or NTC) in an isothermal block (see Manual, section
6.7.3); this must be positioned upstream from the thermocouples and "*J" must
have been programmed in the first two positions in the comments (s. 11.3.2).
For especially exacting requirements (e.g. for thermocouples for which there is no connector with thermo-contacts or for large temperature differences caused by thermal irradiation) there are special connectors available for cold junction compensation each with its own integrated temperature sensor (ZA-9400-FSx).
These can be used for all thermocouple types; however, they require two measuring channels. Having "#J" programmed in the first two positions in the comments for the thermocouple ensures that the temperature sensor integrated in the connector is indeed used for cold junction compensation.
10.3 Measuring point scans and Output
Measuring point scans can be used to acquire the measured values of all measuring points at particular times, either manually or cyclically over a period of time, which means to store or to record on printer or computer (s. man. 6.5).
For this purpose, the menu
Data logger
, e.g., is available:
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Time: 12:34:56 Date: 01.01.04
Cycle timer:
Memory free:
Number:
00:00:30 nS
508.3 kB
01-001 A
01: 244.5 °C
10.3.1 Single Output / Storage of all
Measuring Points
Single manual measuring point scans for ac-
NiCr Temperatur » H º
7 Limit max:
Maximum value:
7 Limit min:
Minimum value:
250.0 °C
245.7 °C
230.0 °C
224.1 °C quiring the momentary measured values of all active measuring points (s.man. 6.5.1.1) can be triggered by the key <MANU> . If the true time of
day has to be indicated, it must first be set (s. 11.1.1). The output format can
be set in the function
Cycle Timer
START MANU M PRINT ESC
ALMEMO ® 2890-9 29
10. Measuring using Measuring-Menus
Single manual measuring point scan:
<MANU>
The following symbols will,
for a short period,
be indicated in the
status line
:
The start arrow will light up and then go off again
Lightening up in case of data output via interface
Indicated when measured values are being stored (s. 11.1.2)
´
©
´
´
COM
´
´
REC
´
Each time the key is pressed again after this, the measured values are equally processed with the corresponding measuring time.
10.3.2 Cyclic Output / Storage of all Measuring Points
For cyclic outputs of measured values (s. man. 6.5.1.2) and recording, the cycle and the output format have to be programmed. The measurement can be
started
by pressing the key <START> and
stopped
with the key <STOP> . At each start of a measurement the max, min and average values of all measuring points are cleared, if the device has been correspondingly configured (stan-
The function
Cycle Timer
indicates the cycle as long as a measurement has
counting down to the next cycle.
Function
Cycle Timer
:
Cycle ( hh:mm:ss ), Memory On, Format List
Cycle Timer: 00:02:00 S
The key <FORM> can be used as the quickest way to set the required Output
Format (printouts s. man. 6.6.1).
Change format:
Format columns next to each other ´ n
´:
Change format:
Format table ´ t ´:
<FORM>
Cycle Timer: 00:02:00 Sn
<FORM>
Cycle Timer: 00:02:00 St
Starting a cyclic measuring point scan wih key:
<START>
For control purposes the following symbols will
continuously
, i.e. for the whole meas.period, be indicated in the
status line
:
The start arrow lights up
Lightening up in case of a data output via interface
Indicated when measured values are being stored (s. 11.1.2)
´
©
´
´
COM
´
´
REC
´
Stopping a cyclic measuring point scan with key:
<STOP>
´
ll
´
10.3.3 Memory space, Memory Output, Clearing the Memory
The function
MemoryFreei
allows, during recording of measuring data, to continuously monitor the available memory space. By selecting this function, two soft keys are available for a direct output and clearing of the memory. The out-
put format corresponds to the setting in the cycle (s. 10.3.2 and 11.1.2)
30 ALMEMO ® 2890-9
Measuring point scans and Output
Function
MemoryFree
e.g.:
Memory data output (s. 11.2.6):
Clear memory:
MemoryFree: 0378.4 kB
<PRINT>
<CMEM>
10.3.4 Output of Menu Functions
Each data menu, together with all displayed functions, can be output via interface to a printer or computer (connection of peripheral devices, see manual
5.2). If you have selected the standard display, pressing the key
<PRINT>
leads to a printout of the following listing:
Print data menu:
<PRINT>
Meas. point, meas. value, designation:
01:+0023.5 °C Temperature
MAXIMUM: 01:+0020.0 °C
MINIMUM: 01:-0010.0 °C
PRINTTIMER: 00:01:23
Total memory capacity, free mem. in kB
MEMORY: S0512.1 F0324.4 A
The listing of the individual functions is given in section 6.6.1.
10.3.5 Displaying Measured Values as a Line Diagram
When using the menu Line diagram the meas. value of the selected channel is indicated as a line chart with 100x200 dots as soon as a measurement is started. The curve continuously moves from the right to the left, the time resolution is determined by the
cycle
, each scan involves one point (dot). Therefore, time data for the whole t axis is given as (days) hours:minutes in the bottom right corner. In the upper right corner the time of day is indicated.
In this mode, the curve is also updated during an active measurement, if the user leaves the menu (in this case, do not change the meas.
point!).
Limits, if activated, are entered as dotted lines.
The functions
Analog Start
and
Analog End
of the menu
Special functions
(s. 11.4.4) can be used to set the display range of the y-axis. They can also be
entered directly at the axis using the key PROG .
Displaying a measured value as line chart:
Enter the cycle in the menu Times - Cycles .
Time axis 120 x 5s = 10min:
Select meas. channels using the keys:
Cycle: 00:00:05
00:10
or ...
ALMEMO ® 2890-9 31
10. Measuring using Measuring-Menus
Scaling the y-axis with key:
Analog end at the upper end:
Change value (s. 9.5) with the keys:
Analog start at the lower end as above.:
Stop input:
Start measurement:
Stop measurement:
PROG
40.0 %H
PROG ,
/
...,
...
20.0 %H
<ESC>
<START>
<STOP >
´
©
´
´
ll
´
Channel switching is blocked during the measurement!
At each start and at each channel switching the line chart will be cleared!
10.4 Averaging
The
average value
of the measured value is required for various applications: e.g.
Smoothing of a largely varying measured value (wind, pressure etc.).
The average flow velocity in a ventilating channel.
Hourly or daily average values of weather data (temp., wind etc.).
As above, of consumption values (current, water, gas etc.).
The average value
M
of a measured value results when a number of measured values Mi are added together and then divided by the number N of the measured values:
Average value
M
=
∑ i
M i
/
N
There are several different averaging modes in the ALMEMO 2890-9:
Attenuation of measured values of the selected channel with a sliding averaging window, averaging over single measurements of place or time (also as net measurement according to the guidelines from VDE), averaging over the whole measuring time, over cycles or over several measuring points.
You can call up an own assistant menu for all modes to put in the necessary parameters and to learn the operation by help windows.
* ALMEMO 2890-9 *
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
AVERAGING: damping by a sliding window © over single manual scans
Net measurement n points over the measuring time over the cycle over measuring points
F ESC
Measuring menu
Average Value
:
32 ALMEMO ® 2890-9
Averaging
However, most of the averaging functions can also be carried out directly in a measuring menu, e.g. the ´User menu´
U2 Averaging
. The operation of the different modes is explained with help windows during the programmation of the averaging mode, e.g.
Averaging: CONT
-over whole measurement
with key: START/STOP
-over single manual scans
with key: MANU
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
01: 254.5 °C
NiCr Temperatur
Damping:
Maximum value:
Minimum value:
Average value:
Counts:
Averaging mode:
Cycle-timer:
20
255.0 °C
224.1 °C
245.7 °C
123
CONT
00:00:30 Sn
Conv.rate: 10M/s Cont: -
Measuring time: 00:01:23.45
To calculate the volume flow from average velocity and cross-section of a flow conduit,
START MANU M PRINT ESC there is a ´User meas. menu´ U3 Volume flow (
menu
Volume flow .
10.4.1 Damping of Meas. values by a Sliding averag. window
The first possibility of averaging concerns only the measured value of the indicated channel and helps to damp measured values of an unstable or strongly fluctuating nature, e.g. particular turbulent flows by means of sliding averaging over a time window. The
Level of damping
can be set via the function
Damping
over the number of the respective taken values within the range of 0 to
99. The smoothed measured value also applies for all subsequent evaluation functions. Damping can thus also be used in conjunction with averaging over
single measured values (s. 10.4.3) or at net measurements (s. 10.4.4) .
m1 m15
M
=
∑ i m i
/
N
Time window
Meas. value damping over e.g. 15 values with:
Damping: 15
Continuous scanning should be switched off, because otherwise the conversion rate would be reduced too much with many measuring points:
Conv.rate: 10M/s Cont: -
Time constant (s) = smoothing / (measuring rate * measuring points +1)
is calculated and displayed by the averaging wizard.
ALMEMO ® 2890-9 33
10. Measuring using Measuring-Menus
10.4.2 Averaging Mode
A detailed description of averaging over measuring point scans is given in the manual section 6.7.4. The type of averaging is determined through the function
Averaging Mode . With the averaging mode and the corresponding operation the following modes can be set:
Function no averaging:
Averaging Mode: -----
Averaging over single measurements with MANU or all measured values from START to STOP:
Averaging over all measured values of a cycle:
Lightening up for control purposes if averaging is in progress:
»
Display of the average value in the function
Average value 12.34 m/s
CONT
CYCL
For recording average values a function channel with the range M(t) or the corresponding output function M(t) is required instead of the measured value. (s. 10.5.5).
10.4.3 Averaging over Manual Single Measurements
Single manual meas. point scans E
i
are performed for an averaging of isolated measurements at certain points or times. At all measuring points where measured values must be averaged the averaging must be switched on by using the averaging mode ´
CONT
´.
E1 E2 E3 E4
M
=
∑ i
E i
/
N
CLR MANU MANU MANU MANU
1. Stop measurement, if it is started:
2. Set the averaging mode (s. 9.5):
<STOP>
Averaging mode: CONT
For smoothing a meas. value select damping:
Damping: 20
Switch the continuous scanning off, if required:
Conv. rate:10M/sCont: -
3. Clear avg. value by selecting it (s. 9.4) and using:
<CLR>
Function ´Average value´ displays:
Function ´Counts´ displays:
4. Manual scans Ex of single measurements:
Average val: ----- m¡
Counts: 00000
Function ´Average value´ displays:
Function ´Counts´ displays:
5. Repeat step 4 for each measuring point.
<MANU>
Average val: 12.34 m¡
Counts: 00001
6. Output of all function values of the menu by using: <PRINT>
34 ALMEMO ® 2890-9
Averaging
10.4.4 Array Measurement
Especially when determining the average velocity in a flow conduit according to the guidelines VDI/VDE 2640, measurements are to be carried out in a net of individual points in a cross-section which is placed vertically with respect to the flow direction (s. man. 3.5.5). A special menu for net measurements is available to record all single values or to have the
Array measur. Points: 5
01: 11.43 m¡
02: 12.51 m¡
03: 19.71 m¡
04: --.-- m¡
05: --.-- m¡ possibility to repeat error measurements. It can be selected in the function ´Average value´, using the key
<ARRAY>
. The menu can be used for other point measurements, too, of course.
Avarage value: 14.51m¡
STOP CLEAR F ESC
1.The Averaging mode is not important:
AveragingMode: ----
For smoothing a meas. value select damping:
Damping: 20
2. Select function average value:
AverageValue: -----
3. Select menu net measuremet using the key:
<ARRAY>
4. For data recording, press the key:
5. Set the number of points:
PROG
A cleared array appears:
6. Select a measuring point using the key:
7. Start the measurement with key:
8. Stop the measurement with key:
Net measurement Points: 5
01: --.-- m¡
<START>
<STOP>
01 : --.-- m¡
01 : 11.22 m¡
01 : 11.43 m¡
9. Record all points according to steps 6 to 8:
10. Clear the array and new measurement with key:
<CLEAR>
11. Back to the measuring menu:
<ESC>
10.4.5 Averaging over the Measuring Time, Meas. duration
To determine the average value of all meas. values, that were acqired over the conversion rate, over a defined period, the averaging mode ´
CONT
´ must be set for the required measuring channel. Averaging can be carried out with or without cycle. A measuring point scan will be performed in any case on start and stop allowing to record the start and end values including the time of day.
A function channel
M(t)
is required for the recording of the average value M
Conv. rate m i
M
M
=
∑ i m i
/
N
Start Stop
Set the averaging mode:
Automatic clearing of average val. on start (s.
or, after selecting the average value, by using:
Averaging Mode: CONT
Check:
<CLR>
ALMEMO ® 2890-9 35
10. Measuring using Measuring-Menus
Starting the averaging using the key:
Reading the meas. time (s. 10.4.6) in function:
Stopping the averaging using the key:
<START>
© »
Meas.Time: 00:01:23.40
<STOP> ll
For a fixed mean time the following function:
Measuring duration 00:02:00
Reading the average value in function:
Average value: 13.24°C
Output of all function values of the menu by using: <PRINT>
10.4.6 Measurement Time, Measuring duration, Timer
For the averaging over time (see above) and for many other measurement experiments, in many cases, the actual measurement time, from start to stop, is required. The function ´Measuring time´ has a resolution of 0.10s and is available to allow a continuous monitoring of the measurement time without clearing the real time. If the function ´Clear Meas. Values On Start of a Measurement´
is activated within the operating parameters (s. 11.5.8), the measurement time
will also be automatically cleared on each start.
Function measuring time:
Clearing the measuring time by using:
Measuring time: 00:00:00.00
<CLEAR>
Measuring duration
If you want to stop a measuring operation or an averaging process (see above) after a certain length of time, you can program the measuring duration in the menu
Times - Cycles
or in a user menu; (this function is displayed in the status bar with ´ ©l ´). (see 10.1.4)
Measuring duration function
Measuring duration 00:00:00
Use a programmed measuring duration when recording to memory; this ensures that recording does not abort prematurely.
Timer as function channel
Measuring times can be output and saved by means of the function channel
Time
; the format is “sssss” or “ssss.s”. (see 10.3.9) The resolution can be raised to 0.1 seconds by programming the exponent to -1. At a count of 60000 the timer is reset and starts again at 0. All the normal start / stop functions can be used; in addition, the start, stop, output, and zero-setting of the timer can also be triggered by actions in the event of limit values being exceeded.
10.4.7 Averaging over the Cycle
The averaging mode ´
CYCL
´ must be used if average values have to be acquired in cyclic periods over these periods. This ensures, that the average value is cleared after each cycle, but appears in the display during the next cycle.
Conv. rate m i m
=
∑ i m i
/
N
Cycle
Display m
1
m
1 m
2
36 ALMEMO ® 2890-9
Averaging
Setting the averaging over cycles:
Programming the cycle (s. 11.1.2):
Start measurement, averaging in progress:
Stop measurement:
Averaging mode: CYCL
Cycle: 00:15:00
Check:
<START>
<STOP>
© ll
»
Reading the average value/cycle in function:
Average value: 13.24°C
Output of all function values of the menu by using: <PRINT>
Average value over manual periods:
It is also possible to determine the average value over periods from one manual measuring point scan to the next with the same averaging mode, but without cycle:
Setting the averaging over cycles:
Select and clear cycle using the key:
Averaging mode: CYCL
<CLR>
Cycle timer: 00:00:00
Check:
Start measurement, averaging in progress:
Manual measuring point scan:
Average value from one scan to the next scan:
<START>
<MANU>
©
©
...
»
Average value: 13.24°C
For recording the average values an additional
function channel
with the range
M(t)
(s. 11.3.9, 11.3.10) or the corresponding
output function
M(t)
(s. 11.4.5, man. 6.10.4) is required instead of
the measured value.
10.4.8 Averaging over several Measuring Points
In all measuring point scans the average value can also be determined over a number of associated measuring points. However, for this average value a function channel with the meas. range
M(n)
must be available
wish to program reference channels and the measuring points to be averaged begin with
M0, you need simply to program the function channel
M(n)
to the 2nd channel of the last
connector (e.g. M13) (s. 11.3.10). This will
then refer automatically to the series from reference channel 2 (M0) through to reference channel 1 (M3 = 1st channel). Other ranges of measuring points can be activated by programming the reference channels accordingly
(s. 11.4.6). The function channel can be con-
figured quickly and easily by means of the
AVERAGING over range of meas. points:
From meas. channel :
00: 234.5 °C NiCr to meas. channel :
03: 189.7 °C NiCr
Program function channel to channel:
13: 213.7 °C M(n)
Range: M(n)
START MANU M PRINT ESC
ALMEMO ® 2890-9 37
10. Measuring using Measuring-Menus help menu for
Averaging
.
Sensor channels
M
= n
=
Bk1
∑ i
=
Bk2
M i
/
N
4. Channel
3. Channel
30
20
2. Channel
1. Channel
10
00
31
21
11
01
32
22
12
02
33
23
13
03
Device internal channels
34
24
14
04
35
25
15
05
Avg. value M(n)
Difference M01-M00
M0 M1 M2 M3 M4
Example:
M13
= n
=
M3
∑ i
=
M0
M i
/
N
M13=
M from M0 to M3
If the sensors are to stay untouched, the function channel can also be pro-
grammed to the device internal channels (e.g. M19) (s. 11.3.10). The standard
reference channels are here M0 to M1.
10.4.9 Volume Flow Measurement
The
volume flow
in flow channels can be calculated by multiplying the average flow velocity v and the cross-section surface. The functions needed for this purpose can be accessed via the ´User menu´ U3
Volume flow
(see on the right); these are a flow channel with averaging, the functions ´diameter´ and ´cross-section
´, and a function channel for volume flow (s.
11.3.10) If the volume flow channel has not yet
been programmed or if other functions are needed, e.g. factor or length and width for rectangular cross-sections, please refer to the help menu
Volume flow
.
Volume flow
VF = average flow velocity v
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
01: 11.67 mls Volocity
|¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹|¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹®®®¸®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®®|
5.00 S220 mls 15.00
Damping: 20
Averaging mode: CONT
Average value:
Counts:
Volume flow:
13.24 mls
12
11: 8343. m
Diameter:
Cross section:
• cross section area CS:
3
/h
150 mm
175 c¥
START MANU M PRINT ESC
VF = v
. CS . 0.36
VF = m
3
/h, v
= m/s, CS = cm
2
For rough air volume measurements at air vents the
average flow velocity
v can be determined by a
time-based averaging
rotating vane must be applied at one end, the averaging has to be started and it is necessary to proceed uniformly over the whole cross-sectional area and to stop the averaging when the other end of the cross-sectional area is reached.
Alternatively, the average flow velocity can also be determined by single
array measurements
according to VDI/VDE 2640 (s. 10.4.4 ) (e.g. 13.24 m/s).
For outputting and storing the number of measuring operations, the function channel ´
n(t)
´ is provided (s. 11.3.9, 11.3.10).
With Pitot tubes, in order to calculate actual velocity, both temperature com-
pensation and atmospheric pressure compensation are required; (see 10.2.5)
38 ALMEMO ® 2890-9
Averaging
The average velocity v
is displayed in function:
Average value: 13.24m¡
Input of the diameter in mm (max. 2000):
Input of the cross section area CS directly in cm
2
2
)
Diameter: 0150 mm
:
CrossSection: 0175c¥
(max. 32000 cm
Display of the volume flow VF channel in m
3
/h: in a function
Volume flow:
11: 834.¦¢
Output of all function values of the menu by using: <PRINT>
Converting to standard conditions
With all flow sensors it is possible to convert the actual measured values to standard conditions, i.e. temperature = 20°C and atmospheric pressure = 1013 mbar. To do so the actual measured values for temperature and atmospheric pressure must be entered in the functions ´temperature compensation´ and
´pressure compensation´ and ´
#N
´ must be programmed in the designation via the interface - either in the velocity channel or in the volume flow channel; this then automatically produces the standard volume flow. (see 11.3.2)
10.5 Display of Several Measuring Points
The already mentioned measuring menus allow, on principle, only the selection and display of one measuring point. This chapter provides a description on how you can get several measuring points with your selection of functions simultaneously on the display.
10.5.1 Menu Multi Channel Display and Bar chart
After the first call the menu
Multi
Channel Display
indicates the measured value of the first three active channels in average scale. But they can be programmed as required:
In the menu
Bar Chart
the first four active channels will be displayed with measured value and bar chart:
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
Time: 12:34:56 Date: 01.01.04
01: 25.45 °C
Ntc Temperatur
11: 54.5 %H
HcrH r. Humidity
21: -12.5 °C
H DT Dew point
START MANU M PRINT ESC
±±±±±±±±±±±±±±±ƒ±±±±±±±±±±±±±±±±±±±±±±
Time: 12:34:56 Date: 01.01.04
01: 21.67 °C Temperatur
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10.00 Ntc °C 30.0
11: 7.8 %H r.Humidity
|¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹®®¸®®®®®®®®®|®®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®|
0.0 % rH %H 20.0
21: -14.2 °C Dew point
|¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹¹¹¸¹¹¹¹¹¹¹®®¸®®®®®®®®®¸®®®®®®®®®|®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®®¸®®®®®®®®|
-20.0 H DT °C 0.0
31: 1.2 glk a.Humidity
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0.0 H AH glk 10.0
START MANU M PRINT ESC
ALMEMO ® 2890-9 39
10. Measuring using Measuring-Menus
Measuring point selection:
The first measuring channel is always the selected measuring point.
This can be selected directly by means of:
or ...
To change the other channels, the measuring point
PROG and must be selected as function, by means of keys:
The channel can now be changed by means of:
The channel selection is terminated with key:
or ...
<M
>
,
<M
>
<ESC>
...
To
set the display range
for the bar chart the functions
"Analog start"
and
"Analog end"
in the
"Special functions" menu should be used;
(see
11.4.4).Having selected these functions they can be entered by pressing
PROG and
or directly on the appropriate axis; (see 9.5).
10.5.2 Differential Measurement
If there are two sensors with the same dimensions and same decimal point position connected at measuring points M0 and M1, the difference M1-M0 ap-
pears automatically at the device-internal measuring point M5 (s. 8.2). If the
differential channel is not required, it must be explicitly deleted (s. 11.3.9). If
further differential channels are needed, these can be created using the appro-
priated reference channels (s. 11.4.6).
10.5.3 Menu List of Measuring Points
The best overview of the meas. system incl.
all meas. values, time of day, date and cycle is obtained with the menu
Meas.point list
.
From here, it is also possible to get to the
Sensor programming
of all measuring points.
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Meas.points list: Comment
Time: 12:34:56 Date: 01.01.04
Cycle-timer: 00:00:30 nS
00: 23.12 °C Temperatur
01: 11.37 mls Velocity
02: 123.4 mV U2.4
10: 53.6 %H r.Humidity
20: 15.2 °C Dew point
30: 11.2 glk a.Humidity
This menu cannot be individually configured, it can only be combined with some selected functions:
START MANU F PRINT ESC
At first call a list with max 20 meas. pts is displayed:
MeasptsList: 20 Meas.v.
00: 23.12°C ...
Functions can be allocated to a meas. value with:
or ...
This reduces the max. number of channels to 10.
Select the following function with:
Measured value including
comment:
Measured value including
maximum value:
MeasValList: Comment
00: 23.12°C Temperature
MeasValList: Max value
40 ALMEMO ® 2890-9
Display of Several Measuring Points
Measured value including
Measured value including
Measured value including
Measured value including
minimum value: average value: limit value max: limit value min:
00: 23.12 °C 32.67 °C
MeasValList: Min value
00: 23.12 °C 19.34 °C
MeasValList: Avg. value
00: 23.12 °C 25.45 °C
MeasValList: Linit max
00: 23.12 °C 32.67 °C
MeasValList: Limit min
00: 23.12 °C 19.34 °C
Measuring range
only (again max. 20 channels):
MeasValList: Range
00: NTC °C
The programming functions can be accessed as follows:
PROG ,
/
...
10.6 Assistant-Menus for Special Meas. Operations
Special measuring operations, i.e. thermal coefficient or wet bulb globe temperature, require a series of sensors in a particular arrangement and function channels programmed for calculating the required variables. To ensure that these two special measuring operations can be performed quickly and easily there is a special assistant menu for each.
10.6.1 Thermal Coefficient
To determine the thermal coefficient q
/
T1
−
T0
the two temperature sensors are connected as required (see manual, section 3.2) to channels M0 and M1, and the heat flow plate to M2. The temperature difference T(M1)-T(M0) is obtained automatically on channel M9 with range Diff .
For this measuring operation the following programming steps are needed :
Averaging mode on M9 : CONT or CYCL
Averaging mode on M2:
CONT
or
CYCL
Range on M12: q/dt default reference channels: Mb1 = q = M02
Mb2 = Diff = M09
Enter the cycle by means of: Cycle timer
Start measuring by means of:
<START>
Stop measuring by means of:
<STOP>
Assistant-Menu
Thermal Coefficient:
Inner temp. T0: Channel: 00
00: 21.67°C NiCr
Outer temp. T1 : Channel: 01
01: 11.42°C NiCr
Difference dt: Channel: 05
05: 10.25°C Diff
Averaging mode: CONT
Heat flow q Channel: 02
02: 103.6 ¤¥
Averaging mode: CONT
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
±
Thermal coeff. Channel: 12
12: 193. ¤mK q/dt
1 Range: q/dt
Cycle-timer: 00:30:00 Sn
START MANU PRINT ESC
ALMEMO ® 2890-9 41
10. Measuring using Measuring-Menus
10.6.2 Wet Bulb Globe Temperature
The stress caused in heat-exposed workplaces can be evaluated in terms of their wet bulb globe temperature calculated according to the following formula:
WBGT=0.1TT + 0.7HTN + 0.2GT (s.man.
3.1.4)
To measure the dry temperature (DT) and the natural humid temperature (HT) a psychrometer (FN A848-WB) with turn-off motor is connected to socket M0 and a Pt100 globe thermometer is connected to socket M1. The output on channel 11 is programmed to
WBGT; (for this device the factor 0.2 must not be programmed !).
Assistant-Menu Wet Bulb
Globe Temperature:
WET-BULB-GLOBE-TEMP.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Dry temperature: Channel: 00
00: 21.67°C Ntc
Humid temp:
10: 11.42°C HT
Channel: 10
Globe temp:
01: 19.42°C P204
Channel: 01
Wetbulbglobetemp: Channel: 11
11: 17.43 °C
1 Range: WBGT
START MANU PRINT ESC
10.7 User Menus
When studying the measurement menus you may have noticed that the display of the meas. value and the combination of functions does not always match your applications in an optimum way. Therefore, you can freely configure the three user menus
U1
to
U3
, in addition to the standard measuring menus using the software AMR-Control. You can use the following list of functions to individually place the functions you require, in any sequence, on your display up to the available space of 13 lines. In addition to the meas. functions that have been described before, it is possible to use times and cycles for the process
control (s. 11.1.) and most of the sensor programming functions (s. 11.3).
42 ALMEMO ® 2890-9
User Menus
10.7.1 Functions
Functions:
Meas.value small
Meas. value medium
3 lines
Meas. value large
7 lines
Meas. value bar chart
2 lines
Limit value Max
Limit value Min:
Base value
Factor:
Zero point corr.
Slope correction:
Analog start
Analog end:
Range
Maximum value
Minimum value:
Average value
Cycle
Time, date
Averaging mode
Conv. rate:
Cycle Timer:
Averaging Counts
Number
Range, comment:
Diameter
Cross section cm 2
Max-time-date
Min-time-date
Blank line:
Line:
Smoothing
Memory free
Display: Keys:
Command
:
00: 234.5°C Temperature
00: 1234.5 °C
ZERO ADJ
o 15 o 16
ZERO ADJ
o 17
00:
Temperature
°C
1234
.
5
ZERO ADJ
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5.0 S220 mls 15.00
Limit Max: 1234.5°C
Limit Min: -0123.4°C
Base: ------
Factor: 1.12345
Zero correction: ------
Slope correction: ------
Averaging mode: CONT
Conv.rate: 10M/s Cont: -
Cycle-timer: 00:00:00Un
Counts: 00000.
Number: 123-56
NiCr Temperature » H º
Diameter: 0000 mm
Cross-section: 0000 c¥
Max Time: 12:34 01.02.
Min Time: 13:45 01.02.
__________________
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
o 34
Analog-start: 0.0°C
Analog-end: 100.0°C
Range: NiCr
Maximum value: 1122.3°C
Minimum value: 19.3°C
Average value: ------
Cycle: 00:00:00Un
o 08
CLR CLRA
o 09
CLR CLRA
CLR CLRA
Time:12:34:56 Date:01.02.00
CLR
CLR
OFF ON
o 10 o 11
CLR FORM
o 12 o 14 o 18 o 19
CLR FORM
OFF ON
CLR
CLR
o 00 o 01 o 02 o 03 o 04 o 05 o 06 o 07 o 20 o 22 o 23 o 24 o 25 o 26 o 28 o 29 o 30 o 31
Damping: 10
MemoryFree: 502.1kB
CLR
CMEM PRINT
o 32 o 33
ALMEMO ® 2890-9 43
10. Measuring using Measuring-Menus
Device designation
Text1:
SampleMan Corporation
1: CommentLine
Text2:
Text3:
2: CommentLine
U1 MenuTitle
Text4:
Text5:
Locking
Atm. Pressure
TemperatureComp
Setpoint
Meas. time:
Meas. duration:
End of menu:
U2 MenuTitle
U3 MenuTitle
Locking: 5
Atm.pressure: 1013mb
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
Temp.compens.: 25.0°C
Setpoint: 1100.0°C
CLR
OFF ADJ
Meas. Time: 00:00:00.00
CLR
Meas. Duration: 00:00:00.00
CLR
o 36 o 37 o 38 o 39
10.7.2 Configuration of the menus
Select one user menu U1 , U2 or U3 from the
MEAS.Menus: measuring menus you do not need at the moment:
/
...,
Please connect the device for configuration via data cable with your PC and call up the delivered
Software AMR-Control
.
With one click on: you get to the:
Network scanning
Device list
Select the device and press: P rogram user menus
Pull the functions from the left side to the menu window on the right with the drag and drop function.
At all functions containing a measured value (e.g. max, average
value, also bar display) you have to put in the measured value of the measuring point first, afterwards the corresponding functions!
Put in an expressive menu title: User menu title
Store the finished menu in the device on Ux with: Menu store, Ux, OK
All menus can also be stored in the PC and be reloaded, if required!
o 40 o 41 o 42 o 43 o 44 o 45 o 46 o 47 o 99
44 ALMEMO ® 2890-9
User Menus
10.7.3 Function Printouts
Meas. Values all
Maximum Value
Maximum Time
Minimum
Minimum Time
Average Value
Averaging Mode
Averaging Count
Memory Free
Number
Range (Comment)
Limit Max
Limit Min
Base
Factor
Zero Point Correction
Slope Correction
Analog-Start
Analog-End
Cycle
Cycle-Timer
Time, Date
Start Time
End Time
Satrt Date
End Date
Measuring Time
Damping
Diameter
Cross section
Atm. pressure
Temp. compensation
Setpoint
Device designation
Line
Blank line
Text1
Text2
Text3
Text4
Text5
Locking
The functions of all measurement menus can be printed out in the listed sequence by using the key: <PRINT> (s.a.
9.3.4Fehler: Referenz nicht gefunden)
The print format of the individual functions is given in the following table:
Function Printout
Comment Text 1
Command
01: +0023.5 °C Temperature
MAXIMUM: 01: +0020.0 °C
MAX-TIME: 01: 12:32 01.02
MINIMUM: 01: -0010.0 °C
MIN-TIME: 01: 12:32 01.02
AVERAGE VAL.:01: +0017.8 °C
AVERAGEMODE: 01: CONT
AVERAGECOUNT:01: 00178.
MEMORY: S0512.1 F0324.4 A
NUMBER: 01-012
RANGE: 01: NiCr
LIMIT MAX: 01: -0100.0 °C
LIMIT MIN: 01: +0020.0 °C
BASE: 01: -0273.0 °C
FACTOR: 01: +1.0350E-1
ZERO CORR: 01: -0000.7 °C
START DATE: 01.02.04
END DATE: 02.02.04
MEASURETIME: 00:00:00.00
DAMPING: 01: 10
DIAMETER: 01: 00100 mm
CROSS SECT: 01: 00078 cm2
A.PRESSURE:+01013.mb
COMPENSATION:01: 25.0°C
SET POINT: 01: 1100.0°C
Fa.Ahlborn,Holzkirchen
-----------------------------
P35
P02
P28
P03
P29
P14
P21
P22
P33
P23
P24
P08
P09
P06
P07 f1 P06
SLOPE CORR: 01: +1.0013
ANALOG START:01: +0000.0 °C
ANALOG END: 01: +0100.0 °C
PRINT CYCLE: 00:06:00 f1 P07
P16
P17
P11
PRINT TIMER: 00:06:00 f1 P11
TIME: 12:34:00 01.02.04 P10, P13
START TIME: 07:00:00
END TIME: 17:00:00 f1 P10 f2 P10 f1 P13 f2 P13
P46
P32
P25
P26
Comment Text 2
Menu Title U1
Menu Title U2
Menu Title U3
LOCKING MODE: 5
P43
P44
P45
P36
P31
P30
P37
P38
P39
P40
P41
P42
ALMEMO ® 2890-9 45
11. Programming With Programming-Menus
11. PROGRAMMING WITH PROGRAMMING-MENUS
Apart from the measuring functions you have already get to know some functions for process control and sensor programming in the measuring menus.
Here in the PROGRAMMING Menus you find a complete and systematic list of all programming functions.
From the measuring menu, you reach the selection menu using the key: <MENU1>
For some programming function, there are additional
ASSISTANT Menus
.
* ALMEMO 2890-9 *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
PROGRAMMING-Menus:
Times, cycles
Recording to memory ©
Output from memory
Sensor programming
...Special functions
Device configuration
Output modules
Power supply
_____________________
Menu1 ASSISTANT-Menus
Menu2 MEASURING-Menus
POFF *ON F MENU1 MENU2
11.1 Times and Cycles
All time functions for measurement, process control and recording are combined in the programming menu
Times - Cycles
and can also be programmed there.
* TIMES - CYCLES *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Time: 12:34:56 Date: 01.01.04
Cycle:
Storing: Ø Sleep: -
Output form:
00:00:00
Columns
Conv. rate: 10M/s Cont: Ø
Output: -
Storing: -
Measurement:
Start time:
Start date:
End time:
End date:
07:00:00
01.01.04
17:00:00
01.01.04
11.1.1 Time and Date
PRINT ESC
The ALMEMO 2890-9 is equipped with a real time clock with date function for recording the measuring time. It has a lithium battery so the time and date are
also maintained after battery change. By selecting the function (s. 9.4) the time
can be programmed in the specified format in the first line on the left side and
the date on the right side (s. 9.5).
Function Time and Date:
Format of time and date:
Time: 12:34:56 Date:01.05.00
hh:mm:ss dd.mm.yy
11.1.2 Cycle with Storage Activation and Output Format
The
Cycle
is used for cyclic storage and outputs of measuring data on the interface (it corresponds to the print cycle of other ALMEMO ® devices, the measuring cycle is no longer implemented). The storage activation in the cycle, i.e.
the cyclic recording of data in the memory is automatically switched on after a reinitialisation but it can also be switched off, if required.
46 ALMEMO ® 2890-9
Times and Cycles
The
output format
(see manual 6.6.1) determines the print format at measuring point scans and at the memory output. It is programmed by using the function
Output form
. Apart from the standard format ´
List
´ with all measured values given in a list, the output format ´
Columns
´ allows for a clear and space-saving printout in columns. For this purpose, a printer will automatically switch to the condensed character mode. The
format ´
Table
´
is available to further process measuring data by means of spreadsheet applications (s. print images man. 6.1).
Function
Cycle
(format hh:mm:ss)
:
Clear cycle, terminate current scan:
Cycle: 00:15:00
<CLR>
Function
Storage actication in cycle:
Switch on storing (basic setting):
Switch off storing:
Storing: Sleep: -
<ON>
Ø
<OFF>
<ON>
-
Switch on function
sleepmode
Sleep: Ø
Output format
´ ´ measured values in list format:
Output form: List
Output format ´
n
´ columns side by side:
Output form: Columns
Output format ´
t
´ table with semicolon separation:
Output form: Table
In the meas. menus the format abbreviations ´
n
´ or
´
t
´ and ´
S
´ (with storage activation) or ´
U
´ (without storage activation) are displayed next to the cycle :
Cycle: 00:15:00 Sn
11.1.3 Conversion Rate, Continuous Measuring Point Scan
If required, for measuring point scans the conversion rate can in function
Conv. rate
be increased from 2,5 up to 10 , 50 or 100M/sec (s. man. 6.5).
There is also an option (SA0000-Q4) for setting the measuring rate to 400 mops but this is only possible for 1 measuring channel at a time.
Half-continuous measuring point scan
The possibility to record only the selected measuring point (not continuous) is not intended anymore, because errors are easily made when corresponding sensors are not recorded. However, it can be useful, especially with many sensors, to treat the selected measuring point in a favoured way and to replace the measured value once in a while, e.g. at analog output or smoothing of the measured value. Therefore, by default the not continuous meas. point scan was replaced by the
half-continuous meas. point scan
, i.e. all measuring points are continuously recorded, but every second measurement records the selected measuring point.
0
M 1 M 2 M 3 M 4 M 5 M
0
M 1 M 2 M 3 M
Continuous measuring point scan
If the
continuous measuring point scan
is switched on, all active measuring channels will be continuously and successively scanned by the conversion rate and all measured values are always up-to-date (s. man. 6.5.1.3). The output
ALMEMO ® 2890-9 47
11. Programming With Programming-Menus and storage of all measured values is also possible.
The continuous storage and the continuous output of the measured values can be activated with the conversion rate using the following two functions.
Function Conversion rate:
half-continuous measuring point scan (basic setting): <OFF>
Cont: - continuous measuring point scan:
Conv. rate: 10M/s
<ON>
Cont: Ø continuous storage off: activate continuous storage: continuous output off: activate continuous output:
Storing: -
<ON>
Ø
Output: -
<ON>
Ø
At a conversion rate of 50 measurements/sec. the following limitations due to shortened analysation times are to be considered:
It should be noted, however, when selecting the measuring rate, that the higher the measuring rate so the lower the measuring quality and, conversely, the lower the rate, the higher the quality.
At measuring rates above 10 mops (measuring operations per second) mains hum suppression is not possible; as a result accuracy may be adversely affected by interference over the connection lines; (wherever possible use twisted wires).
At 100 or 400mops saving to memory is only possible with the multimedia card but not with the internal EEPROM.
11.1.4 Start date and time-of-day, end date and time-of-day,
measuring duration
A sequence of measurements can, at certain points in time, be automatically started and stopped. For this purpose the start time and date and the end time and date can be programmed. If a date has not been specified the measurement will be performed every day in the defined period. The current time must be programmed beforehand. Or, alternatively, instead of specifying the end time-of-day the measuring duration itself can be programmed.
Measuring duration function (format = hh:mm:ss) Measuring duration 00:00:00
Function Start Time
(format hh:mm:ss
):
Function End Time
(format hh:mm:ss
):
Start time: 07:00:00
End time: ------
Function Start Date
(format dd:mm:yy ):
Function End Date
(format dd:mm:yy
):
Start date: 01.05.00
End date: ------
<OFF> To clear values, select function and then use:
If the start time of a measurement has been programmed, the status line will show the symbol:
If the end time of a measurement has been programmed, the status line will show the symbol: ´
´ l©
©l
´
´
48 ALMEMO ® 2890-9
Data Memory for measured values
11.2 Data Memory for measured values
The basic information on saving data in ALMEMO ® devices is provided in the
Manual, Section 6.9. The internal data memory on the ALMEMO ® 2890-9 is a
512-KB EEPROM with capacity sufficient for 64,000 to 100,000 measured values (depending on the number of channels). In the event of a failure in the supply voltage the measured data is retained intact. The EEPROM can be reconfigured from linear memory to ring memory. (see Manual, Sec.
6.10.13.2)
11.2.1 Memory connector with SD card
If memory capacity proves insufficient or if the data needs to be evaluated elsewhere, you can, as additional external memory, use a memory connector
(ZA 1904-SD) with a conventional SD card, available from our range of accessories. The measured data is written to it via the memory connector in table mode and in standard FAT16 format. The SD card can be formatted and its contents can be read and deleted via any normal PC using any card reader.
Measured data can be imported into MS-Excel or into the accompanying measured value software Win-Control.
The memory connector with the additional memory card can be connected at socket A2; it is recognized automatically. You can see that it is properly connected in menu Record to memory in the function External memory , by the higher memory capacity, and a file name in the function File name . (s.10.3.1 )
If the external memory is connected at the start of any measuring operation, it will be used. In the course of the measuring operation it must not be unplugged; this would cause temporarily buffered measured values to be lost.
External memory capacity available
Memory capacity still free
File name (maximum 8 characters)
External memory 64.00 MB
Memory free 21.75 MB
File name ALMEMO.001
In the function File name , before starting any measuring operation, you can enter an 8-character file name. In the absence of a user-assigned file name, the default name “ALMEMO.001” or the name most recently used will be provided automatically. So long as the connector configuration is not altered, you can save several measuring operations, either manual or cyclic, even with numbers, in the same file. (s. 10.3.2) If, however, the
connector configuration has been changed
since the most recent measuring operation and if no new file name has been programmed, then a new file is always created and in so doing the index in the file name extension is automatically incremented by 1, e.g. “ALMEMO.002”. Similarly, if the file name entered already exists, then a new file will be created with the same file name prefix but with a new index.
To check that the memory connector is
functioning properly
there is an LED incorporated in the end of the handle; this indicates the following states :
●
●
No memory card detected : LED flashes once long and then three times short.
Data is being recorded : LED flashes in the same rhythm as the cycle.
ALMEMO ® 2890-9 49
11. Programming With Programming-Menus
●
Data is being read out : LED lights up continuously for the duration of data output
When plugging in the connector make sure that the card remains
latched in position !
The ring memory mode is not supported by memory cards
11.2.2 Data Acquisition
Most of the parameters, which are required for the
recording
of measuring data, have already been described in the menu
Times - Cycles
1. Time and date
2. Cycle, storage activation, sleep mode
3. Conversion rate with storage activation
4. Time of start and end of a measurement
The menu
Recording to memory
can be used for an especially simple recording to memory.
Additionally, there are extra assistant menus for the various possibilities to start and stop
* RECORDING TO MEMORY *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Memory internal:
Memory free:
512.0 kB
125.8 kB
Ring memory: Ø
Meas.channels: 24 active: 05
Cycle: 00:01:00.00
Storing: Ø Sleep: -
Storing time: 24d 13h
Attention:
The first time the device is started only one sensor configuration is saved to the internal memory; however, with effect from the next start this can be supplemented by additional sensors .
If other sensors are connected, memory must be readout and cleared before the next recording!
Meas. duration: 00:01:00
Number: 01-001 A
PRINT ESC
Menu
Recording to memory
:
Internally available memory capacity:
Available free memory space:
External memory capacity available
Linear memory
without overwriting of data:
Memory internal: 512.0 kB
Memory free: 217.5 kB
External memory 64.01 MB
Ring memory: -
Activate
ring memory
with overwriting of data: <ON>
Ø
Nb of act. channels to calculate the storing time:
Meas.chann: 24 active: 05
Input of
cycle
Select and switch on
storing
using the key:
Cycle:
Minimal cycle
with 50 M/s corresp. to active channels: <MIN>
Cycle without storing and without sleepmode:
00:01:00
00:00:00.12
Storing: - Sleep: -
<ON>
Ø Sleep: -
Switch on
sleepmode
<ON>
Storing time
from cycle and channel number:
StoringTime:
Sleep: Ø
24d 13h
Meas.duration,
after start automatic stop after:
Meas.duration: 00:10:00
File name
with memory connector (max. 8 char.) File name ALMEMO.001
Number
: e.g. room 12, meas. point 1
Number: 12-001 A
50 ALMEMO ® 2890-9
Data Memory for measured values
11.2.3 Numbering of measurements
For the identification of measurements or series of measurements it is possible to individually enter a number before starting. With the next measuring point scan it will be output or stored, respectively. This allows to also assign single measurements during a read-out to specific measurement locations or measuring points (s. manual 6.7).
After selecting the function
Number
the 6-digit number is entered in the usual
way (s. 9.5). In addition to the figures 0 to 9 the characters A,F,N,P,- or _
(space) can be used. After the input the number is activated and next to it an
´
A
´ will be indicated until the next cyclic or manual measurement will be stored.
Function
Number:
(e.g. room 12, meas. point 1)
NUMBER: 12-001 A
Zero setting
and deactivating the number with key: <CLR>
Activating
and
deactivating
the number with key: <ON> , <OFF>
Incrementing
and
activating
the number with: < +1 >
11.2.4 Starting and Stopping of measurements
Additionally to starting and stopping of the measurement with the keys, there are even more possibilities, concretely conveyed by the assistant menu
START-STOP
.
The operation via interface is described in the manual section 6.6.
* ALMEMO 2890-9 *
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
MEASURING START-STOP: by pressing: START-STOP key by interface comand: S2-X
The function of start time and end time or measuring duration is described here in sec-
tion 11.1.4, the limit value responses in sec-
tion 11.4.3 and the varieties of relais and
by time © by limit values by trigger cable
11.2.5 Scanning mode
F ESC
For autonomous operation and / or for scanning by computer there are 4 scanning modes available.
Normal
Internal cycle or cyclic scanning by the computer
Sleep
Internal cycle only, automatically switching off for long-term monitoring
Monitor
Internal cycle, not disturbed by computer scanning
Fail-safe
Cyclic scanning by the PC after any failure the internal cycle
Sleepmodus:
For long term monitoring with larger cycles it is possible to operate the measuring device in sleep mode. Within this power saving mode the device will be switched off after each measuring point scan (this is to be considered using sensors with power supply!) and will be automatically switched on for the next measuring point scan after the cycle time has expired. This procedure allows, with one set of battery/accumulators to perform more than 15000 measuring
ALMEMO ® 2890-9 51
11. Programming With Programming-Menus point scans. At 10 minutes for one cycle this results in a total measuring time of more than 100 days.
The following steps must be carried out in the menu
Recording to memory
to perform a
data recording in the sleep mode
:
1. Enter a cycle with a min. duration of 2 minutes:
Cycle: 00:05:00
2. Switch on the storage activation in the cycle:
Storing: Ø normal: -
3. Select the sleep mode:
4. Switch on the sleep mode using the key:
Storing: Ø normal: -
PROG ,
, PROG
Sleep: Ø
5. Start the measurement in a meas. menu with key: <START>
The device announces in the display, Sleep On then it switches off, for control purposes only a LED ´ SLEEP ´ (4) flashes red lamp flashes regularly on the upper window frame.
6. Within the set cycle the device switches automatically on, performs a measuring point scan, and then switches off again.
7. To terminate sleep mode Switch the device off and then on again by means of the slide switch (1)
8. Terminate measurement using the key:
must be switched off!
Monitor mode
ON - OFF - ON
<STOP>
The start or stop through start and end time or through limit values is, on principle, not possible in sleep mode and, therefore,
This new “monitor mode” should be used when a data logger, being operated on a cyclic basis, is to be monitored occasionally by computer. Internal cyclic scanning is not influenced in any way by software scanning; (in Win-Control
“safe initialization” must be switched off). The internal cycle is started as and when the software starts; it may also have been started previously. Scanning via the internal cycle does not cause any data to be output to the interface. In order to record data the memory must have been activated.
In the Mode function the Monitor variant must be programmed
Monitor mode
Fail-safe mode
The “fail-safe mode” is suitable when scanning is purely software-based and merely ensures that scanning will, in the event of computer failure, continue on an internal cyclic basis. In this mode the cycle programmed in the device must be larger than that needed for software scanning. Software scanning keeps resetting the internal cycle with the effect that this cycle is only actually used as and when software scanning fails; (in Win-Control “safe initialization” must be switched off). The internal cycle is started as and when the Win-Control software starts; it may also have been started previously. Scanning via the internal cycle does not cause any data to be output to the interface. In order to record data the memory must have been activated.
In the Mode function the Fail-safe variant must be programmed
Mode: Fail-safe
52 ALMEMO ® 2890-9
Data Memory for measured values
11.2.6 Memory Output
The content of the data memory can, completely or in parts, be output to the serial interface. For each output one of the three available output formats ´List´, ´Columns´ or
´Table´ can be used. The option to specify partial ranges is available as it is possible to set the start and end time of measurements and also possible to select the number of corresponding identified measurements.
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Memory Internal:
Memory free:
512.0 kB
125.8 kB
Residual output:
Output form:
12.5 kB
Columns
Number: 01-001 A
Time: 12:34:56 Date: 01.01.04
With
external SD memory cards
(see 10.2.1) there is only one op-
Time interval:
Start time:
Start date:
End time:
End date:
07:00:00
01.01.04
17:00:00
01.01.04 tion available, namely output in ta-
ALL NR F TIME ESC ble mode of all the measured data contained in the file most recently used. For this purpose simply press the key
in the function
Memory free
in the menu
Memory output
or in certain measuring menus.
The most sensible approach is to remove the memory card and copy the files via a USB card reader directly onto the PC. These can then be imported either into MS-Excel or into Win-Control (as of V.4.9).
Menu
Memory Output
:
Setting the
output format
:
Output form: List
In case of
selecting a numbered measurement:
NUMBER: 12-001 A
In Function Number select number with keys:
<FIRST> , <NEXT> ..., <LAST>
To
select a time interval:
Enter the start time using the format ´ hh:mm:ss
´:
Start time: 07:00:00
Enter the end time using the format ´ hh:mm:ss
´:
End time: 17:00:00
Enter the start date using the format ´ dd:mm:yy
´:
Start date:
Enter the end date using the format ´ dd:mm:yy
´:
End date:
01.05.00
01.05.00
Perform complete output of data memory: <ALL>
Output of a numbered measurement:
Output of a time interval from start to end:
Cancelling the memory output using the key:
<NR>
<TIME>
<STOP>
The memory contents will be output with the same print format as with a printer operation, including multiple printouts and different formats (s. man. 6.6.1).
During the output of data memory, the remaining memory content (in kB) to be output is continuously indicated in the function
Residual output
. Time, date and number show the current values .
Remaining memory output: current number of memory output: current time and date of memory output:
Residual output: 12.5 kB
Number: 01-001A
Time: 12:34:56 Date: 01.01.04
ALMEMO ® 2890-9 53
11. Programming With Programming-Menus
Clear memory
Select function
Memory free
To clear the memory, press the key:
Full memory capacity is indicated in function:
Cancel by using the key:
Memory free: 384.5
kB
<CMEM>
Memory free: 512.0kB
<ESC>
11.3 Sensor Programming
As all ALMEMO
®
instruments contain the whole sensor programming stored in the ALMEMO
®
connector plug, the user, usually, does not need to perform any programming. Only if, for example, sensor errors must be corrected or existing sensors must be scaled or limit values need to be specified the comprehensive programming options have to be used.
If the corresponding sensor connector is connected all parameters of a channel can be checked and entered or changed via keypad in the menu
SENSOR PROGRAMMING
. It must be considered that standard sensors are, by a locking mode, protected against unintentional modification and that the locking level must first be reduced before desired changes
can be performed (s. 11.3.4). The functions
are only selectable as far as the locking mode allows, the rest appears in grey.
Output of the sensor programming of all active measuring points (command P15 s. man.
6.2.3) with key: <PRINT>
* SENSOR PROGRAMMING *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Connector: 0 Channel: 00
Comment: Temperatur
Averaging mode: CONT
5 Locking mode:
7 Limit max:
7 Limit min:
5 Base:
5 Factor:
5 Exponent:
35.0 °C
-----
-----
-----
0
4 Zero correct.: -----
4 Slope correct.:
2 Dimension:
1 Range:
-----
°C
NiCr
MALL M PRINT ESC
11.3.1 Selecting the Input Channel
To query or to program the parameters of a sensor, it is first necessary to select the menu
SENSOR PROGRAMMING
and then to set the required input channel by using the key
or
. For this, only connected sensors and activated channels will be considered. To be able to activate new channels, the key
<MALL>
can be used to enable the selection of
all
channels. The key
<MACT>
can be used to reduce the selection back to the
active
channels only.
The corresponding connector number will be displayed with each input channel.
Menu
SENSOR PROGRAMMING
:
Indication of connector number and channel:
Connector:0 Channel:00
Selecting the next input channel using the key:
Selecting the previous input channel using the key:
Enabling the selection of all available channels: <MALL>
Reducing the selection to all active channels: <MACT>
54 ALMEMO ® 2890-9
Sensor Programming
11.3.2 Measuring Point Designation
Each measuring point can be given a 10-digit alphanumeric designation to optimally identify the type of sensor, the measuring location or the purpose of the application. This comment will be indicated with all standard displays of measured values. If it has not been programmed, the abbreviation of the measuring range will be indicated. In case of outputs via interface the measuring point designation appears in the program header as ´ COMMENT ´ and in the list of measured values (see man. 6.6.1).
Input in function ´Comment´ s. 9.5
Comment: Humidity
It is possible, by means of comment ´*J´, to define temperature sensor (Ntc, Pt100) as external cold junction compensator (s.
10.2.7, man. 6.7.3). It is now also possible (a new feature), by
means of comment " #J ", to define, via the reference channel, a specific cold junction sensor (e.g. connector ZA9400-FSx with Ntc)
to apply to just one thermocouple (s. 10.2.7).
11.3.3 Averaging Mode
The types of averaging, which are defined through the function
Averageing mode
are described in section 10.4.2.
Function no averaging:
Averaging over all running measuring point scans:
Averaging over all scans in one cycle:
Averaging mode: -----
CONT
CYCL
11.3.4 Locking the Programming of the Sensor
The function parameters of each measuring point are protected by the locking mode up to an adjustable locking level
(s. man. 6.3.12)
. Before any programming is performed the locking mode must be correspondingly lowered. If a dot is indicated following the locking mode on the display then a modification is not possible.
Locking Level
0
1
3
4
5
6
7
Locked Functions
none
Meas.range + element flags + output mode
+ Dimension
+ Zero point and slope correction
+ Base value, factor, exponent
+ Analog output, start and end,
Zero point correction temporairement
+ Limit values, max and min
Function
´
LockingMode´:
Locking: 5
In the menu
SENSOR PROGRAMMING
the functions are arranged from top to bottom so that the locked functions cannot be selected.
ALMEMO ® 2890-9 55
11. Programming With Programming-Menus
11.3.5 Limit Values
Two limit values (MAX, MIN) can be programmed and allocated to each measuring channel. An exceeding of limit values is handled as a fault, similar to an exceeding of meas. range limits and sensor breakage. On the display a corresponding arrow
or
will appear next to the measured value and the alarm
relays of a connected relay cable will respond (s. 11.6.2). Relays can also be
assigned to limit values (s. 11.4.3). The alarm condition will persist until the
measured value has dropped below the limit value by the Hysteresis. Generally, the hysteresis is set to 10 digits, however, it can be adjusted to values be-
tween 0 and 99 digits (s. 11.5.7). The exceeding of a limit value can also be
used to start or stop a measurement (s. 11.4.3).
Function:
Enter limit value max (s. 9.5):
Limit value min:
Switching off the limit value:
Switching on the limit value:
7 Limit max: 123.4°C
7 Limit min: -----°C
<OFF>
<ON>
11.3.6 Scaling, Decimal Point Setting
For indicating the electrical signal of a sensor as a measured value of a physical variable it is, in most cases, necessary to set a zero point shift and to perform a multiplication with a certain factor. The functions BASE and FACTOR are available for this. A detailed description of the scaling, including an example, can be found in the manual section 6.3.11.
Indicated value
= (Corrected Measured Value - BASE) x FACTOR.
The FACTOR can be programmed in the range from -2.0000 to +2.0000. For factors over 2.0 or under 0.2 a corresponding decimal point setting must be considered by entering the EXPONENT. The EXPONENT allows to shift the decimal point to the left (-) or right (+) as far as it can be indicated on the display and printer. An exponential presentation of the measured values is not possible.
For automatic calculation of the scaling values:
5 Base : ------
5 Factor: ------
5 Exponent: 0
In the ASSISTANT Menus there is an extra menu
Scaling
consisting of actual and setpoint values.
The correction arrow
º will be indicated as
status of the measured value (s. 9.3), if scal-
ing values have been programmed and the actual measured value has been altered.
SCALING
Connector: 0 Channel: 00
Actual value 1: 4.000 mA
Actual value 2: 20.000 mA
Decimal places:
2 Dimension:
Setpoint 1:
Setpoint 2:
1
°C
-100.0 °C
400.0
°C
5 Base:
5 Factor:
5 Exponent: 2
4 Slope correct: ------
00: 27.0 °C
720.0 °C
0.3125
OK F ESC
56 ALMEMO ® 2890-9
Sensor Programming
11.3.7 Correction Values
The correction values ZERO CORRECTION and SLOPE CORRECTION allow for correcting sensors with regard to zero point and slope (s. man. 6.3.10).
Corrected Meas. Value
= (Meas.Value - ZERO CORR.) x SLOPE CORR.
Function:
Zero point correction:
Slope correction:
Switch on/off keys:
4 Zero correct.: -----°C
4 Slope correct.: -----°C
<OFF> or <ON>
The correction arrow
º will be indicated as status of the measured value (s.
9.3), if scaling values have been programmed and the actual measured value
has been altered.
11.3.8 Changing the Dimension
Each measuring channel allows to replace the standard dimension of the measuring range by any other dimension that has two digits (see manual 6.3.5). In addition to all capital and normal letters, the characters
W
, %, [, ], *, -, =, ~ and spaces (_) are available. The dimension is indicated by two characters that are indicated next to the measuring and programming values.
The
dimension can be changed
using the function:
2 Dimension: °C
When the dimension
°F
is entered a temperature value in degree
Celsius will be converted into degrees Fahrenheit. The cold junction compensation can be switched off by using the characters
!C
. The following dimensions are automatically generated, entering 2 corresponding characters: m¡ at ms , ¦¢ at mh , ¤¥ at Wm
, g£
at g£
.
11.3.9 Selecting the Measuring Range
If users want to program the connectors on their own or if they frequently change the measuring range, it must be considered that the locking must be
cleared, i.e. set to zero (s. 11.3.4), and that special connectors may be re-
quired for some transducers (e.g. thermo, shunt, divider etc., see table). To activate a new measuring channel, activate all channels by using the key <MALL>
select the corresponding input channel (s. 11.3.1) and then enter the measur-
ing range. With the input acknowledgement of the new measuring range all programming values of the input channel will be cleared.
Function Meas. Range Selection:
1 RANGE: NiCr
Enabling the selection of all avail. meas. channels: <MALL>
Switch-off, i.e. deactivating a channel:
Switch-on, i.e. re-activating the channel:
Programming of range as with data input, 9.5
In the input window all abbreviations of the following table are indicated successively
<CLR>
PROG , PROG
PROG , ... , PROG
1 RANGE:
FECO
ALMEMO ® 2890-9 57
11. Programming With Programming-Menus and a corresponding help window to identify the sensors:
ZA 9021FSL
Thermocouple Typ L
-200.0 ... 900.0 °C
Transducer
Pt100-1
ITS90
Pt100-2
ITS90
Conn./Cable/
Sensor
ZA 9000-FS
ZA 9000-FS
Pt1000-1
ITS90
(element flag 1) ZA 9000-FS
Pt1000-2
ITS90
(element flag 1) ZA 9000-FS
Ni100
NiCr-Ni (K)
ITS90
NiCroSil-NiSil (N)
ITS90
Fe-CuNi (L)
Fe-CuNi (J)
ITS90
Cu-CuNi (U)
Cu-CuNi (T)
ITS90
PtRh10-Pt (S)
ITS90
PtRh13-Pt (R)
ITS90
PtRh30-PtRh6 (B)
ITS90
Au-FeCr
W5Re-W26Re (C) ++
Ntc Type N
Ntc Typ N
++
Ptc Typ Kty84 ++
Millivolt 1
Millivolt
Millivolt 2
Volt
Difference Millivolt 1
Difference Millivolt
Difference Millivolt 2
Difference Volt
Sensor voltage
Milliampere
Percent (4-20mA)
Ohm
Ohm ++
Frequency
Pulse
Digital input
Digital interface
Infrared 1
ZA 9000-FS
ZA 9020-FS
ZA 9020-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-SSC
ZA 9000-FS
ZA 9040-SS3
ZA 9040-SS4
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS
ZA 9000-FS any
ZA 9601-FS
ZA 9001-FS
ZA 9000-FS
ZA 9003-SS3
ZA 9909-AK
ZA 9909-AK
Meas. Range
-200.0... +850.0
-200.00...+400.00
-200.0... +850.0
-200.00...+400.00
-60.0... +240.0
-200.0...+1370.0
-200.0...+1300.0
-200.0... +900.0
-200.0...+1000.0
-200.0... +600.0
-200.0... +400.0
0.0...+1760.0
0.0...+1760.0
+400.0...+1800.0
-270.0... +60.0
0.0...+2320.0
-30.00...+125.00
0.000...+45.000
-0.0...+200.0
-26.000...+26.000
-10.000...+55.000
-260.00...+260.00
-2.6000...+2.6000
-26.000...+26.000
-10.000...+55.000
-260.00...+260.00
-2.6000...+2.6000
0.00...20.00
-32.000...+32.000
0.00... 100.00
0.00... 400.00
0.000... 50.000
0... 25000
0... 65000
ZA 9000-EK2 0.0... 100.0
ZA 9919-AKxx -65000... +65000
ZA 9000-FS 0.0... +200.0
Dim Display
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
IrCo
CuCo
CoCo
Pt10
Pt13
EL18
AuFe
WR26
Ntc
Ntc3
P104
P204
P104
P204
N104
NiCr
NiSi
FeCo
°C KTY
mV mV 1
mV mV mV mV 2
V Volt mV mV
D 26
D 55 mV
D260
V D2.6
V Batt mA
mA
% %
W
W
Hz
Ohm
Ohm1
Freq
Puls
%
Inp
DIGI
°C
Ir 1
58 ALMEMO ® 2890-9
Sensor Programming
Transducer
Infrared 4
Infrared 6
Rotating Vanes Normal 20
Rotating Vanes Normal 40
Rotating Vanes Micro 20
Rotating Vanes Mikro 40
Rotating Vanes Macro
Conn./Cable/
Sensor
ZA 9000-FS
ZA 9000-FS
FV A915-S120
FV A915-S140
FV A915-S220
FV A915-S240
FV A915-MA1
Rotating Vanes Water-Micro FV A915-WM1
Dyn.press. 40m/s with TC u. PC FD A612-M1
Dyn.press. 90 m/s with TC u. PC FD A612-M6
Flow sensor SS20 ++ ZA9602-SSS
Rel. humidity cap.
FH A646
Rel. humidity cap. with TC
Rel. humidity cap. with TC
Humid temperature HT
Conductivity probe
with TC
CO
2
O
O
Sensor
2
Saturation with TC a. PC
2
Concentration with TC
FH A646-C
FH A646-R
FN A846
FY A641-LF
FY A600-CO2
FY A640-O2
FY A640-O2
Function channels s. 11.3.10
* Mixture ratio wth PC FH A646
* Dew point temperature
* Partial vapour pressure
* Enthalpy with PC
FH A646
FH A646
FH A646
* Rel. humidity psychr. with PC FN A846
* Mixture ratio with PC FN A846
* Dew point temperature with PC FN A846
* Partial vapour pressure with PC FN A846
* Enthalpy with PC FN A846
Measuring value (Mb1)
Difference (Mb1-Mb2) any any
Maximum value (Mb1) any
Minimum value (Mb1) any
Average value over time (Mb1) any
Count of avg. values (Mb1) any
Avg.val. over meas.pts (Mb2..Mb1) any
Sum over meas. pts (Mb2..Mb1) any
Total pulse count (Mb1)
Pulse count/print cycle (Mb1)
ZA 9909-AK2
ZA 9909-AK2
Alarm value (Mb1)
Thermal coeff. q
/
M01
−
M00
any
ZA 9000-FS
Meas. Range Dim Display
-30.0... +100.0
0.0... +500.0
0.30... 20.00
0.40... 40.00
°C Ir 4
°C Ir 6 m/s
S120
m/s
S140
0.50... 20.00
m/s S220
0.60... 40.00
m/s S240
0.10... 20.00
m/s L420
0.00... 5.00
0.50... 40.00
m/s L605 m/s
L840
1.00... 90.00
0.50... 20.00
0.0... 100.0
0.0... 100.0
0.0... 100.0
-30.00...+125.00
m/s L890 m/s L920
%H
° o
%H H rH
°C
P HT mS
rH
%H HcrH
0.0 ...20.000
0.0 ... 2.500
LF
%
CO2
0 ... 260 %
O2-S
0 ... 40.0
mg/l
O2-C
0.0 ... 500.0
-25.0... 100.0
g/kg H AH
°C H DT
0.0...1050.0
mbar H VP
0.0 ... 400.0 kJ/kg
H En
0.0 ... 100.0
%H
0.0 ... 500.0
g/kg
P RH
P AH
-25.0 ... +100.0
°C P DT
0.0 ...1050.0
mbar P VP
0.0 ... 400.0 kJ/kg
P En
f(
Mb1
)
Mess
0... 65000
0... 65000 f(
Mb1
)
Diff
f(
Mb1
)
Max f( f( f(
Mb1
Mb1
Mb1
)
)
)
Min
M(t) n(t)
M(n) f(
Mb1
) f(
Mb1
W/ m
)
2
K
S(n)
S(t)
S(P)
%
Alrm q/dT
ALMEMO ® 2890-9 59
11. Programming With Programming-Menus
Transducer Conn./Cable/
Sensor
Meas. Range Dim Display
Wet bulb globe temperature
Cold junction temperature
Volume m
Timer
3 / h Mb1 · Q
Temp. for Refrigerant R22 °
Temp. for Refrigerant R23 °
Temp. for Refrigerant R134a °
FDA602Lx
Temp. for Refrigerant R404a °
FDA602Lx
Temp. for Refrigerant R407c °
Temp. for Refrigerant R410 °
FDA602Lx
FDA602Lx
Temp. for Refrigerant R417a °
FDA602Lx
Temp. for Refrigerant R507 °
ZA 9000-FS any any beliebig
FDA602Lx
FDA602Lx
FDA602Lx
0...65000
-90.0...+79.0
-100.0...+26.0
-75.0...+101.0
-60.0...+65.0
-50.0...+86.0
-70.0...+70.0
-50.0...+70.0
-70.0...+70.0
°C
WBGT
°C
CJ m 3 / h
Flow s
Time
°C
°C
°C
°C
°C
°C
°C
°C
R22
R23
R134
R404
R407
R410
R417
R507
TC = Temperature Compensation, PC = Atmospheric Pressure Compensation,
Mbx = Reference channels
* Calculated variables of humidity (Mb1=Temperature, Mb2=Humidity/Humid temp.)
++ only via special connectors with internal characteristic, others available by request) (see 10.3.11)
° 8 measuring ranges for refrigerants - only with device option R (Mb1 = pressure in mbar)
11.3.10 Function Channels
At the end of the table of measuring ranges and units (see above) under the sub-heading
Function channels
there is a group for representing function parameters in measured value processing or calculated results from linking certain measured values on measuring channels (see Manual 6.3.4). Reference to the actual measuring channels is provided by one or two reference channels. For all function channels the default reference channels Mb1 and Mb2 are available on the appropriate connector; these do not need programming.
Function Function channel
* Humidity variables cap.
to 3. or 4.Channel
Difference (Mb1-Mb2)
Ref. Channel 1
* Humidity variables psy.
to 3. or 4.Channel
Mb1=TT
Function parameters (Mb1) to 2., 3. or 4.Channel
Mb1= 1.Channel
Ref. Channel 2
Mb1=Temperatur Mb2=Humidity
Mb2=HT to 2., 3., 4.Chan. (Mb1) Mb1= 1.Channel Mb2=M00
Avg. value over Mb2..Mb1 to 2., 3., 4.Chan. (Mb1) Mb1= 1.Channel Mb2=M00
Sum over Mb2..Mb1
to 2., 3., 4.Chan. (Mb1) Mb1= 1.Channel Mb2=M00 q /
M01
WBGT
−
M00
to 2., 3., 4.Chan. (q) Mb1= 1.Channel Mb2=M05 to 2.Channel (GT) Mb1= 1.Channel Mb2=M00
Arrangement of channels on the connectors :
Once the range has been programmed the standard reference channels can be used (see above). Settings for the reference channels are described in
11.4.6. The best approach is to use the
Function channell
assistant.
60 ALMEMO ® 2890-9
Sensor Programming
Sensor channels
4. Channel
3. Channel
30
20
2. Channel
1.Channel
10
00
31
21
11
01
32
22
12
02
33
23
13
03
34
24
14
04
Device internal channels
35
25
15
05
Difference M01-M00
M0 M1 M2 M3 M4
A2 A1 DC
A new feature is the presence of four device-internal channels:
M9 is programmed by default as differential channel M1-M0; this applies if there are two sensors with the same units and same decimal point position connected at measuring points M0 and M1. However, all four channels can be used in conjunction with any function channels with standard reference channels Mb1=M1 and Mb2=M0 assigned; i.e. if you want to program a function parameter without reference channel on a device-internal basis, the sensor must be connected to M1.
Advantage of device-internal channels:
If several sensors are being used for the same application, they do not have to be reprogrammed and can be freely exchanged without losing their function channel assignment. However, if the whole application operates with just one sensor, then programming on the sensor itself makes more sense.
11.3.11 Special meas. ranges, linearization, multi-point calibration
Thanks to the new ALMEMO special connectors with extra memory for additional data (larger EEPROM, code E4) the following tasks can now for the first time be elegantly performed :
1. Provision of special measuring ranges with internal characteristic (s. 10.3.9)
2. Linearization of signals for voltage, current, resistance, or frequency set by the user
3. Multi-point calibration of all sensors
The ALMEMO 2890-9 can as standard evaluate all appropriately programmed connectors. With the special KL variant it is also possible to convert measuring signals into appropriate display values in line with a characteristic of up to
30 support values. These support points are programmed to the EEPROM in the ALMEMO connector using the AMR-Control software. During a measuring operation the measured values are interpolated between these on a linear basis. When correcting non-linear sensors (e.g. with Pt100 or thermocouple sensors) initially the original characteristics are considered; then only the deviations are interpolated on a linear basis and inserted.
If a channel with a characteristic is deactivated or programmed with a different range, the characteristic is subsequently reactivated by programming the special range ´
Lin
´ by means of the keyboard or command “B99” .
ALMEMO ® 2890-9 61
11. Programming With Programming-Menus
11.4 Special Functions
The data logger 2890-9 has a separate menu allowing access to all ALMEMO
®
special functions, which despite only rarely being required during routine operation, are very useful for some applications (see manual 6.10). These functions can (to a certain extent) be very complex and should only be used if their operation is completely understood.
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Connector: 1 Channel: 11
Print cycle factor:
U-Sensor min:
7 Action max:
7 Action min:
6 Analog-start:
6 Analog-end:
1 Reference ch. 1:
01
12.0 V
Start R1
Ende R2
0.0 °C
300.0 °C
Output function: MESS
1 Multiplexer:
Element flags:
(01)
(B-A)
IR
Calibration offset: -12345
Calibration faktor: 43210
11.4.1 Print Cycle Factor
M PRINT ESC
For the adaptation of the data recording to the update speed of the individual measuring points it is possible to program a print cycle factor between 00 and 99 to output measuring points less often or not at all (see manual 6.10.6). Only disturbed measuring points, e.g. on exceeding of limit values will always be output. Generally, the print cycle factor of all measuring points is cleared or set to 01, i.e. all activated measuring points will be output at each cycle. If a different factor, e.g. 10 is programmed, the corresponding measuring point will only be put out once in ten times, however, if 00 is programmed it will not be output. The data recording also allows to suppress unnecessary measured values and, as a result, saves memory space.
Enter the print cycle factor (s. 9.5) in function:
Clearing the print cycle factor with the key:
Print cycle factor: 01
<CLR>
11.4.2 Minimum Sensor Supply Voltage
Similarly to all ALMEMO
® devices, the sensor supply voltage is also monitored in the 2890-9. It is also displayed in the menu
Power supply
ever, there are also sensors, which require for a correct operation a supply voltage, which requires a charged accumulator or a power supply unit. To avoid measuring errors, the sensor programming allows to individually program the required minimum sensor voltage for each transducer. In case of falling below this voltage the measured value is treated as sensor breakage (indication L flashes).
Entering the minimum sensor supply voltage:
Switching off the voltage control with the key:
U-Sensor Min: 12.0 V
<CLR>
U-Sensor Min: ---- V
62 ALMEMO ® 2890-9
Special Functions
11.4.3 Limit Value Responses
Relay Allocation
As standard, both limit values of all measuring points of a device are used for
fault alarms (s. 11.3.5), i.e. if an exceeding of a limit value occurs at any mea-
suring point, the relay 0 responds if an Alarm Relay Cable or a corresponding
Relay Adapter (s. man. 5.2/3) is used. It only opens again, after all measured values have dropped below the limit values by as much as the hysteresis. If a limit value has not been defined, the measuring range limit will be used as limit value. A sensor breakage will always cause a fault alarm.
To distinguish between max value exceeding and min value undershooting the alarm signal generators can be re-programmed to variant 1
.
If it is necessary to selectively identify and evaluate faults, the function
Action Max
,
Action
Min or the assistant menu
LIMITS, ALARM can be used to allocate individual relays to the limit values. It is also possible to allocate several limit values to one relay. For this purpose the relay cables provide 2 relays (0 and 1) and the relay adapter (ZA 8000-RTA) provides 4 relays (0 to 3). This mode also has to be set as variant 2
in the output module (s. 11.6.2, man. 6.10.9).
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Select measuring channel:
M0: 216.7 °C
7 Limit max: 300.0 °C
Relay: 0
7 Limit min: 100.0 °C
Relay: 1
Output socket: A2
Use alarm cable, set variant
EA Trigger-Alarm
2: Rx int. assigned
Relay: 01------
Output socket: A2
Setting the relay module to variant 2:
(relay int. allocated)
M PRINT ESC
EA Trigger-Alarm
2: Rx int. allocated
Activating relay x at limit value exceeding Max:
7 Action max: ----- Rx
Activating relay y at limit value undershooting Min:
7 Action min: ----- Ry
Clearing the relay allocation using the key: <CLR>
Starting and Stopping a Measurement
Exceeding of limit values can not only be used for fault alarms but also to start or stop a measurement (s. man. 6.6.3). The start command or stop command is assigned to a limit value - also by means of the functions Action max and
Action min
.
Start measuring operation at limit value, max.:
7 Aktion Max: Start --
S
Manual inquiry at limit value, maximum:
7 Aktion Max: Manu --
M
Zero-setting timer 2 at limit value, maximum:
7 Aktion Max: TZero --
T
Stop measuring operation at limit value, min:
7 Aktion Min: Stop --
E
Clear response by using the key: <CLR>
Printout of relay assignment x (s. man 6.10.8) and action Y (s. man 6.6.3) as assembled code in the sensor programming (s. man 6.10.1).
ALMEMO ® 2890-9 63
11. Programming With Programming-Menus
11.4.4 Analog Output Start and End
In most cases the analog output of measured values to the analog output modules (see manual 5) or the display as bar or line chart must be scaled to a specified sub-range. For this, it is just necessary to specify the start and end value of the display range required by you. This range is then mapped to the analog range 2V, 10V, 20mA or, for the display, to 100 dots.
Programming the
analog output start
:
Programming the
analog output end
:
6 Analog start: 0.0°C
6 Analog end: 100.0°C
These two parameters, analog output start and analog output end, are also stored in the EEPROM of the sensor and can, therefore, be individually programmed for each channel, i.e. during a manual switch through the channels an individual scaling is available for each measuring variable.
The flag for switching over from 0-20mA to 4-20mA can be programmed
through the element flags (s. 11.4.8).
There is the assistant menu Analog output
(s. 11.6.3) to programm all pa-
rameters of an analog output.
11.4.5 Output Function
If not the real measured value to the measuring point Mxx but only the Max,
Min, Average or Alarm value is required, then this function can be programmed as output function (see manual 6.10.4). As a result, only the corresponding function value will be considered for storing and analog or digital output. For control of the changed output function the symbol below is displayed next to
Examples:
1. If meas. values are averaged over the cycle only the average value is relevant as output value, but not the last measured value. This way, memory space can be saved in a data logger.
2. The analog measured value of the dew sensor FH A946-1 has no meaning.
If the limit value Max is set to approximately 0.5V, and the measuring function ´Alarm Value´ is programmed only the relevant values 0.0% for dry and
100.0% for ´dew´ will be displayed.
Control Symbol Output Function
Measuring value (Mxx)
Difference (Mxx-M00)
Maximum value (Mxx)
Minimum value (Mxx)
Average value (Mxx)
Alarm value (Mxx)
D
H
L
M
A
Menu
Output Function: Meas
Output Function: Diff
Output Function: Max
Output Function: Min
Output Function: M(t)
Output Function: Alrm
64 ALMEMO ® 2890-9
Special Functions
11.4.6 Reference Channel 1
The arithmetic functions of the function channels, generally, refer to a particu-
lar measuring channel (or 2 meas. channels) (s. 11.3.10, man. 6.3.4). During
the programming of a function channel the first channel of the corresponding sensor connector Mxx1 is automatically set as reference channel Mb1. The
2nd reference channel Mb2 (for difference, average value M(n) etc.) is, initially, the measuring point M00. In function
Reference ch. 1
it is possible to set other measuring points as reference channel, either absolutely by specifying a particular measuring point or by specifying the ´distance´ referred to the function channel (e.g. -01 identifies the channel preceding the function channel).
Programming of the ref. channel 1 absolute:
Programming of the ref. channel 1 relative:
1 RefChannel 1: 01
1 RefChannel 1: -10
11.4.7 Reference Channel 2 or Multiplexer
In case of function channels, which require a second reference channel (s.
above), the function
Reference channel 2
will automatically be displayed in the line after Reference channel 1 . In all other cases it is possible to change the pin assignment in the connector by changing the input multiplexer with the function Multiplexer (s. manual 6.10.2).
Programming of the ref. channel 2 absolute:
1 RefChannel 2: 00
Programming of the ref. channel 2 relative:
Measuring inputs B+ and A-, GND-referred
Measuring inputs C+ and A-, GND-referred
Measuring inputs D+ and A-, GND-referred
Differential measuring inputs C+ and B-
Differential measuring inputs D+ and B-
1 RefChannel 2: -01
1 Multiplexer: B-A
1 Multiplexer: C-A
1 Multiplexer: D-A
1 Multiplexer: C-B
1 Multiplexer: D-B
11.4.8 Element Flags
For a realization of sensor-specific additional functions, element flags can be activated at each measuring channel (s. manual 6.10.3)
Measuring current 1/10 for Pt1000, 5000
W
:
ElementFlags: I 1/10
Emission and background temp. for IR sensors:
ElementFlags: IR
Meas. bridge with switch for final value simulation:
ElementFlags: Bridge
(Activation base value:) *
ElementFlags: Flag 4
Deactivating electrical isolation (see )
(Element flag 6:) *
Switch-off of the sensor breakage detection:
Analog output 4-20mA instead of 0-20mA:
ElementFlags: Iso Off
ElementFlags: Flag 6
ElementFlags: Br Off
ElementFlags: A 4-20
*
At the ALMEMO 2890-9 these element flags have no meaning
ALMEMO ® 2890-9 65
11. Programming With Programming-Menus
11.5 Device Configuration
Some fundamental settings can be taken in the menu
DEVICE CONFIGURATION
. The device designation serves as print header in log printouts and facilitates the assignment within a network. Furthermore, the device address is imperative in a network. The baud rate can be adapted to external devices.
Three levels are available for the lighting of the display. The setting of the atmospheric pressure for the compensation of certain sensors is particularly suitable at corresponding altitudes. The standard value of the hysteresis of alarm relays can be changed.
For checking the device the channel number and cold junction temperature are indicated.
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Device designation:
Ahlborn, Holzkirchen
Device: 00
Baud rate:
Language:
Lighting level:
Lighting duration:
Contrast:
Air. pressure:
Hysteresis:
V: 6.05 XY
9600 Bd
Deutsch
1
20 s
50 %
1013 mb
10
Configuration: FCR-----
Meas.channels: 40 Active: 05
CJ-Temperature: 25.4 °C
PRINT ESC
11.5.1 Device Designation
The function
Device designation
(s. manual 6.2.4) allows to enter any text
with max 40 digits (s. 9.5). The text appears in the main menu, in the print
header of a measurement and in device lists (software).
Function Device designation :
Device designation:
Ahlborn, Holzkirchen
11.5.2 Device Address and Networking
All ALMEMO ® instruments can be very easily networked to centrally acquire the measured values of several instruments that are located at different places
(see manual 5.3). For communicating with networked devices it is mandatory that all devices have the same baud rate and an own individual address as only one device is allowed to respond to each command. Therefore, before any network operation it is necessary that all connected devices are set to different device numbers. For this, the function Device is available. Generally, the device number 00 is set as the factory default value in this function. It can be
changed by the usual data entry (s. 9.5). For checking purposes it is followed
by the device type, the version number and, possibly, an option code (s. manual 6.10.11).
Device address with type, version, option:
Device: 00 2890-9 V:6.05XY
Example:
address: 00, type: 2890-9, version: 6.05, option: XY
Only successive numbers between 01 and 99 should be entered for network operation so that the device 00 cannot be falsely addressed in case of a power supply failure.
66 ALMEMO ® 2890-9
Device Configuration
11.5.3 Baud Rate, Data Format
All interface modules are factory-set and programmed to 9600 baud. To avoid unnecessary problems when networking several devices the baud rate should not be modified but the computer or printer should be set up accordingly. If this is not possible the values 1200, 2400, 4800, 9600bd or 57.6, 115.2 kbd can be entered in the function Baud Rate (please consider the max. baud rate of the interface module!). The baud rate setting will be stored in the EEPROM of the interface module and will then be valid for use with all other ALMEMO devices.
Function Baud Rate :
BaudRate: 9600bd
Data Format:
unchangeable 8 data bits, no parity, 1 stop bit
11.5.4 Language
The user can choose between German / English / French as the interface language in which the functions are labeled in the display; (other languages are also available as options). The soft-keys are international; these cannot be changed. If German is not specifically selected, printouts will be in English.:
Language selection in function Language
Language: English
11.5.5 Lighting and Contrast
The background lighting of the display can be switched on or off in 3 levels in the selection menus by using the key
<* ON>
or in the function
Lighting
of the device configuration (attention, the power consumption is fife times higher in level 3!). If the lighting is switched on when a mains supply adapter is not connected, the lighting will switch off in a configurable lighting time after the last key was operated (pause), and it will switch on again as soon as any key is operated. With the function
Contrast
the contrast of the display can be set to
10 different positions.
Switching on the lighting, level 1 to 3:
Switching off the lighting, level 0:
Lighting level: 2
Lighting level: 0
Entering the lighting time from 20sec to 10 min:
Lighting time: 20s
If the
lighting is switched on
, the status line provides the symbol:
If it is temporarily switched off, lights up:
Switch-on
without
function by using the key:
Setting the contrast (10 to 100%) s. 9.5:
*
*
<ESC>
Lighting on
Pause
Contrast: 50%
11.5.6 Atmospheric Pressure
For compensation of various sensors the atmospheric pressure can be entered
(s. 10.2.6). If it is measured, it will also be indicated in this function:
Entering the atmospheric pressure in function:
Atm. Pressure 1013mb
ALMEMO ® 2890-9 67
11. Programming With Programming-Menus
11.5.7 Hysteresis
In case of an exceeding of limit values the hysteresis of an alarm condition can, generally for all sensors, be set in the function Hysteresis
and manual 6.2.7) within the range from 0 to 99 digits (standard setting is 10 digits).
Change hysteresis (0 to 99) s. 9.5:
Hysteresis: 10
11.5.8 Operating Parameters
Some operating parameters are software options and can be user-configured with the function
Configuration
(s. manual 6.10.13.2).
Mains frequency noise suppression 60Hz instead of 50Hz
Configuration: F-------
Clearing all measured values on start of a measurement
Configuration: -C------
Ring memory (overwriting of old data when full)
Switching off the signal transmitter
Configuration: --R-----
Configuration: -----S--
The following parameters can be used to check the device function:
Out of 20 channels 5 are activated:
Meas.Chan:20 active:05
Cold junction temperature = socket temperature:
CJ-Temperature: 25.4°C
11.6 Output Modules
The data logger ALMEMO
®
2890-9 has two output sockets, A1 and A2, to allow an output of the measured values as analog or digital values or as alarm signals. Furthermore, it is possible to trigger various functions through trigger pulses. To suit all possibilities, while keeping the hardware requirements at a minimum, all necessary interfaces have been integrated into the ALMEMO
® nectors.
output con-
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Output socket A1:
DK Data cable
0: RS232
Baudrate: 57.6 kBd
Output socket A2:
EA Trigger-Alarm
2: Rx int. assigned
Relay: 01------
The output modules, like the sensors, are automatically detected and displayed in the
Analogue channel: 00
Analogue value: +32500
PRINT ESC menu
OUTPUT MODULES
.
With the relay trigger analog modules certain function variants can be config-
puts can be assigned to certain measuring channels. In this menu all ports can be selected and configured accordingly. The connection possibilities are described in the instructions for the output module concerned.
68 ALMEMO ® 2890-9
Output Modules
11.6.1 Data cable
Via the serial interface you can output cyclic data logs, all the function values from the measuring menus, and all the programming details for the device and for the sensors to a printer or computer. The ALMEMO
®
data cables and their connection to devices are described in detail in the Manual, Section 5.2. Other modules for networking the devices are described in detail in the Manual, Section 5.3. All available interface modules can be connected to socket A1
(2)
; this is with the exception of cable ZA 1999-NK, which is used for networking extra devices; this must be connected to socket A2.
Under the prevailing socket the menu indicates:
Outout Socket A1:
DK Data cable
Variant 0: Standard interface always active
0: RS232
The baud rate is also stored in the cable connector:
Baudrate: 9600 Bd
11.6.2 Relais trigger modules
Whereas, for the purposes of addressing peripheral devices via the relay and trigger input (see Manual 5.1.2/3), V5 modules (ZA 1000-EAK, ZA 8000-RTA) provide only one function variant (see Manual
6.6.4), the new V6 relay trigger analog adapter
* OUTPU MODULES *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
ZA 8006-RTA3 Socket: A2
ZA 8006-RTA3 offers up to 10 relays or options with 2 of these as trigger inputs or up to 4 as analog outputs. All elements can be configured individually for these functional variants.
Old output cables can be reconfigured for V6 functions by means of AMR-Control. These modules can be connected equally well to out-
Port: 0 Adr.: 20
Relais: normally open 0.5A
2: Relais driven externally
Status: activ open
Watchdog: Ø Error put socket A2 or output socket A1
(2)
. To ensure that all elements are addressed, each of these sockets has been assigned 10 port addresses.
ON OFF P PRINT ESC
Socket Connection
A1
A2
V6 output modules at socket A1
V6 output modules at socket A2
Port addresses
10..19
20..29
In the "Output modules " menu the elements of the output modules can be individually selected and functions programmed as follows (see Manual 6.10.9) :
First
select the port
by pressing : e.g. port 0, socket A2 (port address 20) :
The element concerned is recognized :
Relay :
Relay type = NO (normally open) :
Relay type = NC (normally closed) :
Relay type = changeover :
<P> : ▲
Port: 20 or
▼
Relay : NO
Relay : NC
Relay : Changeover
ALMEMO ® 2890-9 69
11. Programming With Programming-Menus
The relay switching mode can be configured to the following
variants;
0: Alarm if any one channel of all channels is faulty
2: Alarm for a programmable channel
0: Summated alarm
2: Assigned internally
3: Alarm, if one limit value - maximum of all is overshot
3: Summated alarm - maximum
4: Alarm, if one limit value - minimum of all is undershot
4: Summated alarm - minimum
8: Relay driven via interface or keypad
8: Driven externally
Variant 2 "Assigned internally" also requires the
assignment of relays
to cer-
tain limit values; (see 11.4.3).
For the purposes of
detecting power failure
it is an advantage if relays are driven on an inverted basis because in the absence of current an alarm status applies automatically. The function variants are therefore also provided on an inverted basis.
Inverted relay control
: e.g. variant 2 inverted : -2: Assigned internally - Inverted
The
activation mode
and
actual contact status
resulting from the relay type and driving mode are displayed in the next line.
Activation mode
and
relay contact status
:
Status : active open
Relay variant 8 "Driven externally"
permits manual activation of the relays via the keypad or via the interface; (see Manual 6.10.10).
Relay variant 8 :
For manual activation of relays press :
8: Driven externally
<ON> or <OFF>
The watchdog setting for the RTA then appears: see above.
Trigger inputs
For the purpose of controlling the measuring sequence 2 trigger inputs are provided at ports 8 and 9 (keypad or optocoupler).
The trigger source "key" and / or "optocoupler" can be defined directly in the RTA3 by pressing keys
PROG
,
▲
/
▼
,
PROG
or the trigger function can, for safety reasons, be switched off altogether by means of "OFF".
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Socket: A2 ZA 8006 RTA3
Port: 8 Adr.:28
Trigger: key+optocoupler
0: Start-Stop
P PRINT ESC
The following trigger functions
can be programmed as function variants :
0: Start and stop a measuring operation
0: Start / stop
1: Once-only manual measuring point scan
1: Once-only scan
2: Clear all maximum / minimum values
2:
Delete max. / min. values
3: Print measured value
3: Print
4: Start / stop a measuring operation on
level-controlled basis
4: Start/stop, level-controlled
8: Set measured value to zero
8: Set measured value to zero
-5: Execute macro 5 (see Manual 6.6.5)
-5: Makro5
-6: Execute macro 6
-7: Execute macro 7
-8: Execute macro 8
-9: Execute macro 9
-6: Makro6
-7: Makro7
-8: Makro8
-9: Makro9
70 ALMEMO ® 2890-9
Output Modules
11.6.3 Analog Output
For an analog recording of measured values it is still possible, at sockets A1 and / or A2
(2)
to connect V5 output modules with an analog output, e.g. via recording cable ZA1601-RK -1.2
to 2.0 V (see Manual 5.1.1) and to configure these in the
"Output modules"
menu.
The new V6 relay trigger analog adapter
ZA8006-RTA3 offers, at ports 4 to 7, the option of up to 4 additional separately configurable ana-
with the following possible output signals :
Voltage 0 to 10 V
Current 0 to 20 mA
0.5 mV / digit
1 µA / digit
ANALOG OUTPUT
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Output socket: A2
RK Recording cable 20mA
Select measuring channel:
00: 216.7 °C
Scaling:
Analog-start:
Analog-end:
Current output:
Analogue value:
0.0 °C
300.0 °C
4-20 mA
15557
M PRINT ESC
Programming
is as for relay and trigger inputs :
To select socket and port
press :
<P> : ▲ or
▼
The following output modes
can be programmed as variants :
0: Measured value for the selected measuring channel :
0: Selected meas. chan. M00
2: Measured value for a programmed channel :
2: Assigned internally M01
8: Programmed analog output (see below) :
The analog value appears below this
8: Driven externally
Analog value : 12.456 mA with the appropriate units :
The
measured value for the selected measuring channel
Mxx is output in
variant 0. In this mode the semi-continuous measuring rate (see 11.1.3) is the
most suitable because in this way the analog output will be processed most frequently.
Assigning an analog output to a measuring point
In variant 2 "Assigned internally", after selecting the Mxx function, you can program the measuring point to be output : 2: Assigned internally M
In this case the continuous measuring rate (see 11.1.3) is better.
Scaling the analog output
When configuring a measured value output it is also possible, in the same menu, by means of the functions
"Analog start"
and
"Analog end"
, to have the measuring range actually used for the measuring point concerned spread
over the full 10 V or 20 mA; (see 11.4.4).
To program the analog output start :
6 Analog start : 0.0 °C
To program the analog output end
6 Analog end : 100.0 °C
For 20 mA analog outputs only
To choose between 0 - 20 mA and 4 - 20 mA output: Current output: 4-20 mA
ALMEMO ® 2890-9 71
11. Programming With Programming-Menus
Programmed analog value output
(see Manual 6.10.7)
In variant 8 "Driven externally"
8: Driven externally
the analog output value can be programmed (see 9.5):
Analog value: 5.000 mA
11.7 Menu Power Supply
The power supply for the measuring instrument is normally derived from six AA NiMH
* POWER SUPPLY *
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Battery voltage: 3.8 V
Sensor voltage set: 9.0 V
Sensor voltage act: 8.6 V rechargeable batteries. The POWER SUPPLY menu provides an estimation of the battery's remaining operating time in the form of a current voltage display. At 3.5 volts the battery symbol in the status line starts to flash and at
3.1 volts the device switches off automatically.
The current charge status cannot be displayed more exactly than this because of the different
Mains adapter:
Maximum current:
12.0 V
1.0 A
Accus:
Capacity:
Charge mode:
Charge current:
Ø
1600mAh
Charge
1.7 A
PRINT ESC types of battery cell available.
To power the sensors a selectable sensor voltage is generated (approx. 6, 9, or 12 volts). With sensors that draw a lot of current but manage with relatively low voltage, the ideal sensor voltage selection can save a lot of energy.
Setting the desired Sensor Voltage:
Display of actual sensor voltage:
If a mains adapter is connected, the sensor
Sensor voltage set: 9.0 V
Sensor voltage act: 9.1 V voltage will always be 12V:
Mains adapter:
The max. admissible current is also displayed: Maximum current:
If the accumulators are discerned (contact),
12.0 V
1.0 A there appears in the display: Accumulators:
The accumulator capacity must be programmed:
Capacity:
Ø
1600mAh
With mains adapter ZB1112-NA10 the process of charging the batteries to
1600 mAh takes 2.5 hours and for higher capacities accordingly longer. For the duration of the charging phase the green LED “ CHARGE ” remains continuously lit; as soon as the battery is fully charged, the adapter switches over to trickle charge and the LED goes out.
In charging mode the charge status is displayed:
Charge mode: Charge
Charge current: 1.20 A The charging current is set automatically:
As soon as the accumulator is fully charged, charging status displays:
Charge mode: full the charge current switches over to trickle charge: Charge current: 0.01 A
If the battery temperature is either too high or too low for charging or if the mains adapter is too weak etc., the charging mode displays, e.g.: or a numbered error mistake:
Charge mode: T too high
Charge mode: Error 1
72 ALMEMO ® 2890-9
The locking and calibration menu (option KL)
11.8 The locking and calibration menu (option KL)
In the
"Locking and calibration" menu
you can lock the right-of-access to certain menus and to certain functions. Here you can also see the serial numbers and calibration data for the device itself and for any sensors attached. With option KL it is possible not only to correct the sensor at several points in the connector itself but also to manage the associated calibration data.
The right-of-access to this and other menus and to certain key functions can be stipulated in detail and protected by password by means of the parameters "Menu" and "Fct".
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Password: ****
Locking level: Menu: 0 Fct: 0
Device:
Serial number:
2890-9 6.22
04020123
Next calibration:
Signal for calibration:
01.12.05
Ø
Sensor:
Type:
Serial number:
Next calibration::
Calibr. interval:
Channel: 00
FHA646-6
04020123
01.02.06
12 Month
PRINT ESC
Menu Locking the menus
0 none
1 + calibration menu, except password
2 + programming menus, except recording to memory and output from memory
3 + recording to memory and output from memory
4 + wizard menus
5 + measuring menus, except user menu U1
Fct Locking the functions
0 none
1 + data input, switching on and off
2 + clearing measured data
3 + start / stop / output measuring operation
4 + function selection, measuring point selection
and keys
PROG, ON, OFF, ZERO, ADJ
CMEM, CLR, CLRA
START/STOP, MANU, ARRAY, PRINT
PROG, F«, M«
No password, locking with new password:
Locked with password, enter correct password : Password :
Select locking level, menu, and function :
Password : -
****
Locking mode : Menu: 0 Fct: 0
The device type (with version and serial number) and the sensors (with order number and serial number) are displayed. With option KL you can enter the date of the next calibration and the calibration interval in months. If “Calibration message” is activated then, as soon as the next calibration is due, a message to this effect will appear when the device is switched on.
ALMEMO ® 2890-9 73
12. Troubleshooting
12. TROUBLESHOOTING
The data logger ALMEMO 2890-9 can be configured and programmed in many different ways. It allows for a connection of many different sensors, additional measuring instruments, alarm signalisers and peripheral devices. Due to the large variety of options it is possible that, under certain conditions, it does not perform as the user would expect. In most cases this will not be related to a defective device but to operating errors such as wrong settings or an inadmissible wiring. The following tests should be performed to correct or to correctly identify the error.
Error:
No display at all or faulty display, no key response
Remedy:
Check power supply, recharge battery, switch off and on again, reini-
tialise, if required (see point 7.5Fehler: Referenz nicht gefunden)
Error:
Incorrect measured values
Remedy:
Thoroughly check the entire programming of the channel, particularly base and zero point (menu ´Sensor Programming´ and ´Special
Functions´)
Error:
Varying meas. values or blockage during operation
Remedy
:
Check cabling for inadmissible electrical connection, disconnect all suspicious sensors, connect hand-held sensors and operate them in air or connect dummies (short circuit AB at thermocouples, 100
W
at Pt100 sensors) and check, then reconnect sensors successively and check.
If an error occurs with one sensor, check the wiring, isolate the sen sor if necessary, prevent influences from disturbances by shielding or twisting.
Error:
Data transmission via interface does not function
Remedy:
Check interface module, connections and setting:
Are both devices set to the same baud rate and transmission mode
Is the correct COM interface addressed at the computer?
Is a printer in ONLINE mode?
Are the handshake lines DTR and DSR active?
A small interface tester with LEDs is very useful for checking the data flow and the handshake lines (during standby mode the data lines TXD and RXD are on a negative potential of approximately -9V and the LEDs are illuminated green. The handshake lines DSR, DTR, RTS and CTS have a positive voltage of approximately +9V and the LEDs are illuminated red. During the data transmission the data LEDs must flash red).
Test the data transmission by using a terminal (AMR-Control, WIN-
Control, WINDOWS Terminal):
74 ALMEMO ® 2890-9
Troubleshooting
Select output channel interface U by using the command ´
A1
´,
Address the device with its device number ´ Gxy ´ (s. man. 6.2.1), if the computer is in XOFF state, enter <Strg Q> for XON, query the programming through ´ P15 ´ (s. man. 6.2.3),
Only check the sending line by cycle input via command ´
Z123456´ and control in the display
Test the receiving line with the key <PRINT> and by monitor control.
Error:
Data transmission within the network does not function.
Remedy:
Check that all devices are set to different addresses, address all devices individually via terminal and command ´ Gxy ´.
Addressed device is OK when the feedback is at least ´ y CR LF
´.
If data transmission is still not possible, disconnect networked devices, check all devices separately using the data cable of the computer (see above), check the wiring regarding short circuit or twisting.
Are all network distributors supplied with power?
Network and check the devices successively again (see above).
If the device is, after the above inspections, still not performing as specified in the operating instructions, it must be sent to the factory in Holzkirchen, Germany, including a short report and, possibly, control printouts. Additionally, the software AMR-Control allows to print the monitor pages including the programming and also to save an extensive ´function test´ in the device list or the terminal operation and to print it out.
13. DECLARATION OF CONFORMITY
Ahlborn Mess- und Regelungstechnik GmbH declares herewith that measuring instrument ALMEMO ® 2590 carries the CE label and complies in full with the requirements of EU directives relating to low voltage and to electromagnetic compatibility (EMC) (89/336/EWG).
The following standards have been applied in evaluating the product.
Security:
IEC:
EN 61010-1:2001
EN 61326: 2006
If a product is modified in any manner not agreed with us in advance, this declaration becomes void.
When using the sensor with an extension care must be taken to ensure that wiring is not laid alongside or close to high-voltage power cables and that it is, if necessary, properly shielded so as to prevent spurious interference being induced in the system.
The following advisory notes must be observed when operating the device :
Using the device in strong electromagnetic fields may aggravate measuring errors (<50 µV at 3 V/m and 1.5 meters thermocouple sensor). After exposure to such irradiation ceases, the device will again operate within its technical specifications.
ALMEMO ® 2890-9 75
14. Appendix
14. APPENDIX
14.1
Technical Data
Measuring inputs:
Meas. channels:
AD-converter:
Sensor voltage supply:
Outputs:
Equipment:
Display:
Operation:
Memory:
Time and Date:
Microprocessor:
(see manual 2.3)
9 ALMEMO ® sockets for ALMEMO ® flat connectors
9 primary channels el. isol., max. 31 add. channels for double sensors and function channels
Delta-sigma >16bit, 2.5, 10, 50 M/s, amplific. 1..100
9V 0.15A, 12V 0.1A (mains adapter: 12V)
2 ALMEMO ® sockets for all output modules graphics 128x128 dots, 16 lines à 4mm nine keys (four soft-keys) and thumb-wheel
512kB EEPROM (approx. up to 100000 Meas.values) real time clock buffered with Lithium battery
M16C62P
Power supply:
ext. 9...13V DC
Rechargeable battery pack
Mains adapter
Input and output modules
6 NiMH cells, AA, 1.6 Ah, 5A fuse
ZB1112-NA10 230 VAC to 12 VDC, 2 A
Adapter cable, electr. isolated ZB 2590-UK
Current consumption
10-30 VDC to 12 VDC, 1 A without active mode: approx. 37 mA with lighting sleep mode: approx. 50-100 mA approx. 0.05 mA
Housing:
Operation conditions:
Operating temperature:
Humidity of ambient air:
L204 x B109 x H44 mm, ABS, weight: 550g
-10 ... +50 °C (storage temperature: -20 ... +60 °C)
10 ... 90 % rH (non-condensing)
76 ALMEMO ® 2890-9
Product overview
14.2
Product overview
Data logger ALMEMO 2890-9
9 inputs, max. 40 channels, 2 outputs, cascadable interface,
Order No.
9 keys, LCD graphics display, real time clock, 512kB EEPROM memory MA 2890-9
Options
Measuring rate to 400 mops only possible for 1 measuring point
Measuring ranges for temperature display of 8 refrigerants
Linearization or multi-point calibration of sensors, calibration data management,
Accessories
SA0000-Q4
SB 0000-R
OA 2690-KL
Memory connector including SD card, minimum 128 MB (RS)
Spare rechargeable battery pack, NiMH, 7.2 volts, 1600 mAh
Mains adapter with ALMEMO connector, 12 volts, 2 A
DC Adapter cable 10 to 30V DC, 12V/0.25A electr. isolated
ALMEMO ®
ALMEMO ®
ALMEMO ®
Recording cable -1,25 to 2,00 V
Data cable V24 Interface, electr. isolated, max. 115.2kB
Network cable, electr. isolated, max. 115.2kB
ZA1904-SD
ZB 2590-AP
ZB 1112-NA10
ZA 2590-UK
ZA 1601-RK
ZA 1909-DK5
ZA 1999-NK5
ALMEMO ® data cable, with Ethernet interface, electr. isol. max. 115.2 KB ZA 1945-DK
ALMEMO ® I/O cable for triggering and limit value alarm ZA 1000-EGK
ALMEMO ® 2890-9 77
14. Appendix
14.3 Keyword index
accumulator capacity
Action max and Action min activation mode actual contact status
Additional Channels
Alarm Relay Cable
Analog Output
Analog Output Start and End
Array Measurement
Assistant-Menus
Atmospheric Pressure
Atmospheric Pressure Compensation
Averaging
Averaging Mode
Averaging over Manual Single Measurements
Averaging over several Measuring Points
Averaging over the Cycle
Averaging over the Measuring Time
Bar chart
Base
Baud Rate
Changing the Dimension
Charge mode
CJ-Temperature
Clear memory
Cold Junction Compensation
Cold junction temperature
Comment
Compensation
Configuration
Configuration of the menus
Connection of the Transducers
Continuous Measuring Point Scan
Contrast
Control Symbols
Conversion Rate
Correction of the Meas. Value
Correction Values
Current output:
Cycles
Cyclic Output
Damping of Meas. values
Data Acquisition
78 ALMEMO ® 2890-9
25
68
44
18
54
29
68
55
67
57
72
68
36
35
39
56
35
20, 41
67
28
32
34, 55
34
37
18
63
71
64
72
63
70
70
25
57
71
46
47
67
21
47
30
33
50
10.4.7
10.4.5
10.5.1
11.3.6
11.5.3
11.3.8
11.7
11.5.8
11.2.6
10.2.7
11.5.8
11.3.2
10.2
11.5.8
10.7.2
8
11.7
11.4.3
11.6.2
11.6.2
8.2
11.4.3
11.6.3
11.4.4
10.4.4
10.6
11.5.6
10.2.6
10.4
11.3.3
10.4.3
10.4.8
11.1.3
11.5.5
9.3
11.1.3
10.2
11.3.7
11.6.3
11.1
10.3.2
10.4.1
11.2.2
Data buffering
Data cable
Data Entry
Data Format
Data Memory for measured values
Decimal Point Setting
Declaration of conformity
Device Address
Device Configuration
Device Designation
Differential Measurement
Display
Display of Several Measuring Points
Element Flags
Equipment
Exponent
Extent of the Delivery
External DC Voltage Supply
Factor
Function Channels
Function Keys
Function Printouts
Function Range of the ALMEMO 2890-8
Function Selection
Guarantee
Housing
Hysteresis
Initial Operation
Introduction
Inverted relay control
Isolation
Keypad
Language
Level of damping
Lighting
Limit Value Responses
Limit Values
Line Diagram
Locking the Programming of the Sensor
Mains Operation
Max Time
Maximum current
Meas. points list
Measurement
Measurement Time
Keyword index
3.2
7.3
11.3.6
11.3.10
9.2
10.7.3
5.1
9.4
3.1
14.1
11.5.7
6
5
11.6.2
8.3
9
7.6
11.6.1
9.5
11.5.3
11.2
11.3.6
13
11.5.2
11.5
11.5.1
10.5.2
9
10.5
11.4.8
14.1
11.3.6
11.5.4
10.4.1
11.5.5
11.4.3
11.3.5
10.3.5
11.3.4
7.2
10.1.2
11.7
10
5.1.2
10.4.6
ALMEMO ® 2890-9
6
76
56, 68
15
10
70
19
20
21
45
10
22
7
17
56
60
39
65
76
56
66
66
40
20
49
56
75
66
17
69
22
67
67
33
20, 67
63
56
31
55
16
24
72
23
12
36
79
14. Appendix
Measuring
Measuring inputs
Measuring Point Designation
Measuring point scans
Measuring with one Measuring Point
Measuring-Menus
Memory Output
Memory space
Menu List of Measuring Points
Menu Power Supply
Menu Selection
Min Time
Minimum Sensor Supply Voltage
Multi Channel Display
Multiplexer
Networking
Numbering of measurements
Operating Controls
Operating Parameter
Operation conditions
Order No.
output cables
Output Format
Output Function
Output Modules
Output of Menu Functions
Peak Value Memory
Power supply
Print Cycle Factor
Process flow control
Product overview
Programmed analog value output
Programming-Menus
Reference Channel 1
Reference Channel 2
Reinitialisation
Relais trigger modules
Relay Adapter
Relay Allocation rigger modules
S
Safety instructions
Scaling
Scaling the analog output
Selecting the Input Channel
80 ALMEMO ® 2890-9
77
69
30, 46
64
51
2
68
76
68
31
24
16, 76
62
13
77
72
23
18, 76
55
29
24
20, 23
30, 53
30
62
39
65
66
40
72
20
24
20, 46
65
65
17
69
63
63
69
51
8
56
71
54
11.2.3
1
11.5.8
14.1
14.2
11.6.2
11.1.2
11.4.5
11.6
10.3.4
10.1.2
14.1
11.4.1
5.1.3
14.2
11.6.3
10
14.1
11.3.2
10.3
10.1
10
11.2.6
10.3.3
10.5.3
11.7
9.1
10.1.2
11.4.2
10.5.1
11.4.7
11.5.2
11
11.4.6
11.4.7
7.5
11.6.2
11.4.3
11.4.3
11.6.2
11.2.5
4
11.3.6
11.6.3
11.3.1
Selecting the Measuring Point
Selecting the Measuring Range
Sensor Adjustment
Sensor Programming
Sensor Supply
Sensor Voltage
Setpoint Entry
Setting the Meas. Value to Zero
Single Output
Sliding averag. window
Slope correction
Special Functions
Special Meas. Operations
Standard display
Starting and Stopping of measurements
Storage Activation
Switch On/Off
Technical Data
Temperature Compensation
Thermal Coefficient
Time and Date
Time and Date of Maximum Value
Transducers
Trigger inputs
Troubleshooting
Two-point Adjustment
U-Sensor Min
User Menus
Volume Flow Measurement
Waste disposal
Wet Bulb Globe Temperature
Zero Point Adjustment
Zero point correction
Keyword index
7.5
14.1
10.2.5
10.6.1
11.1.1
10.1.2
8.1
11.6.2
12
10.2.4
11.4.2
10.7
10.4.9
3.3
10.6.2
10.2.2
11.3.7
10.1.1
11.3.9
10.2.3
11.3
7.4
11.7
10.2.4
10.2.1
10.3.1
10.4.1
11.3.7
11.4
10.6
10.1
11.2.4
11.1.2
38
7
42
26
57
74
27
62
42
46
24
18
70
17
76
28
41
24
57
26
11, 54
17
72
27
25
41
24
51
46
29
33
57
62
ALMEMO ® 2890-9 81
14. Appendix
14.4 Your contact
82 ALMEMO ® 2890-9
Your contact
We take every possible care but the risk of inaccuracy can never be altogether excluded.
We reserve the right to make technical changes without advance notice.
ALMEMO ® 2890-9 83
14. Appendix
84 ALMEMO ® 2890-9
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