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Operating Instructions
SECU
LIFE
HIT AM HIT MD
METRA
HIT
AM BASE , AM PRO , AM TECH , AM XTRA
METRA
HIT
XTRA O UTDOOR T ECH P RO B ASE
Advanced Multimeters / Special Multimeters
3-349-352-03
14/5.18
1.800.561.8187
www.
.com
Standard Equipment
Standard Equipment
1 multimeter
1 measurement cable set
2 batteries
1 DAkkS calibration certificate
1 abbreviated operating instructions
–
Function
2
V AC / Hz TRMS
(Ri
9 M
)
V AC TRMS
(Ri = 1 M
)
V AC+DC TRMS
(Ri
9 M
)
V DC (
9 M
)
... 1 MHz 5 V AC
Duty cycle as %
Hz (V AC)
Bandwidth V AC
A AC / Hz TRMS
A AC+DC TRMS
A DC
Fuse
Transformation factor
A AC
TRMS
/ Hz
A AC+DC
TRMS
SECULIFE
HIT
AM
/HIT
MD
METRA HIT
AM XTRA
XTRA /
O UTDOOR
METRAHIT
AM TECH
T ECH
M687A/M687B M240A/M240O M243A
& 1kHz
Filter & 1kHz
Filter & 1kHz
& 1kHz
Filter & 1kHz
Filter & 1kHz
Filter
Filter
METRAHIT
AM PRO
P RO
M242A
& 1kHz
& 1kHz
Filter
Filter
METRAHIT
AM BASE
B ASE
M241A
—
... 100 kHz
... 100 kHz
—
—
—
—
—
—
... 100 kHz ... 100 kHz ... 100 kHz
15 Hz ... 20 kHz 15 Hz ... 20 kHz 15 Hz ... 10 kHz 15 Hz ... 10 kHz 15 Hz ... 1 kHz
100
A
1/10/100 mA
1 A / 10 (16)
A
100
A
A
1/10/100 mA
1 A / 10 (16)
10/100 mA
1 A / 10 (16)
A
1 A / 10 (16)
A
—
—
—
10 A/1000 V 10 A/1000 V 10 A/1000 V 10 A/1000 V —
— —
—
—
—
—
— mV/A mA/A mV/A mA/A
—
— mV/A
Ri = 1 M
mV/A
Ri = 1 M
Contact Persons
Function SECULIFE
HIT AM /HIT MD
METRAHIT
AM XTRA
X-
TRA
/
O UTDOOR
METRAHIT
AM TECH
T
ECH
M687A/M687B M240A/M240O M243A
METRAHIT
AM PRO
P
RO
M242A
METRAHIT
AM BASE
B
ASE
M241A
A DC
Hz (A AC)
Resistance
Continuity
Diode ... 5,1 V
Capacitance
4 MBit memory
1)
IR Interface
Temperature TC (K)
Temperature RTD
MIN/MAX/data hold
—
... 30 kHz
—
... 30 kHz
mV/A mA/A
... 30 kHz
—
—
—
—
... 30 kHz
—
—
—
— mV/A
Ri = 1 M
... 30 kHz
—
—
—
—
Power pack adapter socket
Protection
— — —
IP65
X-TRA: IP52
OUTDOOR:
IP65
IP52 IP52 IP52
Antimicrobial properties
Measuring category
Rubber holster
Measurement cable set
/ —
600 V CAT III
300 V CAT IV
KS17-2AMB/
KS17-2
—
1000 V CAT III
600 V CAT IV
KS17-2
—
1000 V CAT I II
600 V CAT IV
—
KS17-2
—
1000 V CAT III
600 V CAT IV
—
KS17-2
—
1000 V CAT III
600 V CAT IV
—
KS17-2
DAkkS calibr. certificate
1)
Hygiene Expertise — /
— — — —
For 15,400 measured values, sampling rate adjustable from 0.1 second to 9 hours
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1.800.561.8187
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.com
Table of Contents
Contents
1 Safety Features and Precautions ....................................... 8
1.1
Use for Intended Purpose ................................................................10
1.2
Meanings of Danger Symbols ..........................................................10
1.3
Meanings of Acoustic Warning Signals ............................................10
2
3
3.1
Inserting Batteries or Rechargeable Batteries ...................................16
3.2
Activation .......................................................................................16
3.3
Setting the Operating Parameters ....................................................16
3.4
Switching the Instrument Off ...........................................................17
4
Initial Start-Up .................................................................. 16
Control Functions ............................................................. 18
4.1
Selecting Measuring Functions and Measuring Ranges .....................18
4.1.1 Automatic Range Selection .............................................................18
4.1.2 Manual Measuring Range Selection .................................................18
4.1.3 Quick Measurements ......................................................................19
4.2
Zero Offset / Relative Measurements ...............................................19
4.3
Display (LCD) .................................................................................20
4.3.1 Digital Display ................................................................................20
4.3.2 Analog Display ...............................................................................20
4.4
Measured Value Storage: DATA (auto-hold / compare) ......................21
4.4.1 Saving Minimum and Maximum Values – MIN/MAX Function ............22
4.5
Measurement Data Recording ( METRAHIT AM XTRA / X TRA /
O UTDOOR and SECULIFEHIT AM / MD only) ...........................................23
5
Page Contents
Operating Overview – Connections, Keys, Rotary Switch, Symbols . 12
Measurements ................................................................. 26
5.1
Voltage Measurement .....................................................................26
Page
5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC) .....27
5.1.2 Alternating Voltage Measurement with 1 M
W
Load Resistance and Frequency Measurement with Selectable Low-Pass Filter
( METRAHIT AM X-TRA / AM TECH / AM PRO / X TRA / O UTDOOR /
T ECH / P RO / SECULIFEHIT AM / MD only) ............................................28
5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter
( METRAHIT AM X-TRA / AM TECH / AM PRO / X TRA / O UTDOOR /
T ECH / P RO / SECULIFEHIT AM / MD only) ............................................30
5.1.4 Frequency and Duty Cycle Measurements
( METRA HIT AM XTRA / X TRA / O UTDOOR / SECULIFEHIT AM / MD only) .... 32
5.2
Resistance Measurement,
..........................................................33
5.3
Continuity Test ..............................................................................34
5.4
Diode Testing with a Constant Current of 1 mA ...............................35
5.5
Temperature Measurement ............................................................36
5.5.1 Measurement with Thermocouples, Temp TC ..................................36
5.5.2 Measurement with Resistance Thermometers
( METRA HIT AM XTRA / X TRA / O UTDOOR / SECULIFEHIT AM / MD only) .... 37
5.6
Capacitance Measurement ( METRA HIT AM XTRA / X TRA /
O UTDOOR / SECULIFEHIT AM / MD and METRAHIT AM TECH / T ECH only) .. 38
5.7
Current Measurement ....................................................................39
5.7.1 Direct and Pulsating Current Measurement, Direct Connection,
A DC and A (DC+AC) ( METRAHIT AM X-TRA / AM TECH / AM PRO /
X TRA / O UTDOOR / T ECH / P RO / SECULIFEHIT AM / MD only) .................40
5.7.2 Alternating Current and Frequency Measurement, Direct Connection,
A AC and Hz ( METRAHIT AM X-TRA / AM TECH / AM PRO /
X TRA / O UTDOOR / T ECH / P RO / SECULIFEHIT AM / MD only) .................41
5.7.3 Direct and Pulsating Current Measurement with Clip-On Current Sensor,
A DC and A (DC+AC) ( METRAHIT AM TECH / T ECH and
METRAHITAM BASE / B ASE only) ...................................................... 42
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Table of Contents
Contents
5.7.4 Alternating Current Measurement with Clip-On Current Sensor
Page Contents Page
9.7
Manufacturer’s Guarantee .............................................................. 65
A AC and Hz ( METRAHIT AM TECH / T ECH and METRAHITAM BASE /
B ASE only) ............................................................................................43
5.7.5 Direct, Pulsating and Current Measurement with Clip-On Current
Transformer A DC, A (DC+AC), A AC and Hz ( METRAHIT AM TECH /
T ECH only) ...................................................................................... 44
10 Accessories .......................................................................66
10.1 General ......................................................................................... 66
10.2 Technical Data for Measurement Cables ......................................... 66
10.3 NA X-TRA Power Pack (not included) .............................................. 66
10.4 Interface Accessories for METRAHIT AM XTRA / X TRA / O UTDOOR ,
SECULIFEHIT AM and SECULIFEHIT MD (not included) ......................... 67 6 Device and Measuring Parameters ................................... 46
6.1
Paths to the Various Parameters .................................................... 47
6.2
List of All Parameters .................................................................... 47
6.3
Querying Parameters – InFo Menu (as moving letters) ...................... 48
6.4
Entering Parameters – SETUP Menu ............................................... 48
6.5
Default Settings ............................................................................. 50
11 Index .................................................................................68
7 Interface Operation (METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD only) ................................................... 52
7.1
Activating the Interface ................................................................... 52
7.2
Configuring Interface Parameters .................................................... 53
8 Technical Data ................................................................ 54
9 Maintenance and Calibration ............................................ 62
9.1
Displays – Error Messages ............................................................ 62
9.2
Batteries ....................................................................................... 62
9.3
Fuse ( METRAHIT AM XTRA / X TRA / O UTDOOR , METRAHIT AM TECH /
T ECH , METRAHIT AM PRO / P RO and SECULIFEHIT AM / MD only) .........63
9.4
Housing Maintenance .................................................................... 64
9.5
Return and Environmentally Sound Disposal .................................... 64
9.6
Recalibration ................................................................................. 65
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Safety Precautions
1 Safety Features and Precautions
You have selected an instrument which provides you with a high level of safety.
This instrument fulfills the requirements of applicable EU guidelines and national regulations. We confirm this with the CE marking. The relevant declaration of conformity can be obtained from
GMC-I Messtechnik GmbH.
The TRMS digital multimeter has been manufactured and tested in accordance with the following safety regulations:
IEC 61010–1:2010/DIN EN 61010–1:2011/VDE 0411–1:2011.
When used for its intended purpose (see page 10), safety of the operator, as well as that of the instrument, is assured. Their safety is however not guaranteed, if the instrument is used improperly or handled carelessly.
In order to maintain flawless technical safety conditions, and to assure safe use, it is imperative that you read the operating instructions thoroughly and carefully before placing your instrument into service, and that you follow all instructions contained therein.
The multimeter is equipped with an automatic socket blocking mechanism for your safety, and in order to safeguard your instrument. This mechanism is linked to the rotary switch and only allows access to those jacks which are actually required for the selected function. It also prevents the user from turning the rotary switch to impermissible functions after the measurement cables have already been plugged in.
Measuring Categories and their Significance per IEC 61010-1
CAT
I
II
III
IV
Definition
Measurements in electrical circuits which are not directly connected to the mains: for example electrical systems in motor vehicles and aircraft, batteries etc.
Measurements in electrical circuits which are electrically connected to the low-voltage mains: with plugs, e.g. at home, in the office or laboratory etc.
Measurements in building installations: stationary power consumers, distributor terminals, devices connected permanently to the distributor
Measurements at power sources for low-voltage installations: meters, mains terminals, primary overvoltage protection devices
The measuring category and the maximum rated voltage which are printed on the device apply to your measuring instrument, for example 1000 V CAT III.
For the application of measuring cables see chapter 10.2.
Observe the following safety precautions:
• The multimeter may not be used in potentially explosive atmospheres .
• The multimeter may only be operated by persons who are capable of recognizing contact hazards and taking the appropriate safety precautions. Contact hazards according to standard exist anywhere, where voltages of greater than 33 V RMS or
70 V DC may occur. Avoid working alone when taking measurements which involve contact hazards. Be certain that a second person is present.
• Maximum allowable voltage between the voltage measuring terminals, and between all connections and earth is 1000 V for measuring category III, or 600 V for measuring category IV.
Exception SECULIFE HIT AM /HIT MD : 600 V CAT III and 300 V CAT IV.
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Safety Precautions
• Be prepared for the occurrence of unexpected voltages at devices under test (e.g. defective devices). For example, capacitors may be dangerously charged.
• Make certain that the measurement cables are in flawless condition, e.g. no damage to insulation, no interruptions in cables or plugs etc.
• No measurements may be made with this instrument in electrical circuits with corona discharge (high-voltage).
• Special care is required when measurements are made in HF electrical circuits. Dangerous pulsating voltages may be present.
• Measurements under moist ambient conditions are not permitted.
• Be absolutely certain that the measuring ranges are not overloaded beyond their allowable capacities. Limit values are included in chapter 8, “Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the “Overload Capacity” column.
• The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous currents and voltages are otherwise not indicated, and the instrument may be damaged.
• The instrument may not be operated if the fuse cover or the battery compartment lid has been removed, or if its housing is open.
• The input for the current measuring range is equipped with a fuse link (exception: METRAHITAM BASE / B ASE ).
Maximum permissible voltage for the measuring circuit (= rated voltage of the fuse) is 1000 V AC/DC.
Use specified fuses only (see page 59)! The fuse must have a breaking capacity of at least 30 kA.
Opening of Equipment / Repair
The equipment may be opened only by authorized service personnel to ensure the safe and correct operation of the equipment and to keep the warranty valid.
Even original spare parts may be installed only by authorized service personnel.
In case the equipment was opened by unauthorized personnel, no warranty regarding personal safety, measurement accuracy, conformity with applicable safety measures or any consequential damage is granted by the manufacturer.
Repair and Parts Replacement
When the instrument is opened, voltage conducting parts may be exposed. The instrument must be disconnected from the measuring circuit before the performance of repairs or the replacement of parts. If repair of a live open instrument is required, it may only be carried out by trained personnel who are familiar with the dangers involved.
Defects and Extraordinary Strains
If it may be assumed that the instrument can no longer be operated safely, it must be removed from service and secured against unintentional use.
Safe operation can no longer be relied upon:
• If the device demonstrates visible damage
• If the instrument no longer functions, or if malfunctioning occurs
• After long periods of storage under unfavorable conditions, e.g. humidity, dust or extreme temperature (see “Ambient Conditions” on page 60)
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Safety Precautions
1.1
Use for Intended Purpose
• The respective multimeter is a portable device which can be held in the hand during the performance of measurements.
• Only those types of measurements described in chapter 5 may be performed with the measuring instrument.
• The measuring instrument, including measurement cables and plug-on test probes, may only be utilized within the specified measuring category (see page 59 and the table on page 8 regarding significance).
• Overload limits may not be exceeded. See technical data on page 54 for overload values and overload limits.
• Measurements may only be performed under the specified ambient conditions. See page 60 regarding operating temperature range and relative humidity.
• The measuring instrument may only be used in accordance with the specified degree of protection (IP code) (see page 60).
1.2
Meanings of Danger Symbols
!
Warning concerning a point of danger
(attention: observe documentation!)
Warning concerning dangerous voltage at the measurement input: U > 55 V AC or U > 70 V DC
1.3
Meanings of Acoustic Warning Signals
Voltage warning: > 1000 V (intermittent acoustic signal)
Current warning: > 10 A (intermittent acoustic signal)
Current warning: > 16 A (continuous acoustic signal)
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Operating Overview – Connections, Keys, Rotary Switch, Symbols
2 Operating Overview – Connections, Keys, Rotary Switch, Symbols
15
chapter 3.1
16
chapter 7
chapter 6
15
chapter 3
14
12
chapter 6
12
chapter 4.4
10 chapter 4.1
max. 1000 V ! / SECULIFE HIT AM & MD
*
9
1
2
3
4
5
6
chapter 3 ff.
7
8
*
chapter 4.3
chapter 4.1.2
chapter 3
chapter 5
chapter 6
chapter 1.2
chapter 3
chapter 4.1
: max. 600 V !
1 Display (LCD) (see page 13 for significance of symbols)
2 MAN / AUTO shift key for manual/automatic measuring range selection
Increase parameter values
Operating mode menu: Select individual menu entries against direction of flow
3 ON / OFF | LIGHT key for switching device and display illumination on and off
4 FUNC | ENTER multifunction key
Operating mode menu: Acknowledge entry (ENTER)
5 Increase measuring range or move decimal point to the right (MAN function)
6 Rotary switch for measuring functions, (see page 15 for significance of symbols)
7 DAkkS calibration mark
8 Connector socket for ground
9 Connector socket for current measurement with automatic blocking
10 Connector socket for voltage, resistance, temperature, diode and capacitance measurement ( METRAHIT AM XTRA / XTRA / O UTDOOR ,
METRAHIT AM TECH / T ECH and SECULIFEHIT AM / MD only) with automatic blocking
11 DATA / MIN / MAX
Key for freezing, comparing and deleting measured value, and for Min/Max
Decrease values
Operating mode menu: Select individual menu entries in direction of flow
12 MEASURE | SETUP
Key for switching back and forth between measuring and menu function
13 ZERO | ESC
Key for zero balancing
Operating mode menu: Exit current menu level and return to a higher level, exit parameters configuration without saving data
14 Decrease measuring range or move decimal point to the left (MAN function)
15 Connector for power pack *
16 Infrared interface *
* METRAHIT AM BASE / B ASE :
Current measurement by means of clip-on current sensor with voltage output only * METRAHIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only
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Symbols Used in the Digital Display
1 2 3 4 5 6 7 8 9 10
24
23
22
Battery level indicator
Battery full
Battery OK
21
20
19 18
Battery weak
Battery (almost) dead, U < 1.8 V
17
Interface indicator
METRAHIT AM XTRA / XTRA / O UTDOOR and
SECULIFEHIT AM / MD :
Active data transmission to / from multimeter
IR interface in stand-by mode
(ready to receive starting commands)
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12
12
14
15
15
16
Operating Overview – Connections, Keys, Rotary Switch, Symbols
1 Battery level indicator
2 ON: continuous operation (automatic shutdown deactivated)
3 MAN: manual measuring range selection is active
4 Digital display with decimal point and polarity display
5 max/min: Min/Max value storage
6 DATA: display memory, “freeze” measured value
7 STORE: memory mode active, with METRAHIT AM XTRA / XTRA /
O UTDOOR and SECULIFEHIT AM / MD only
8 ISO: no function here
9 Transformation factor (current clip factor), with METRAHIT AM BASE /
B ASE and METRAHIT AM TECH / T ECH only
10 IR: infrared interface display, with METRAHIT AM XTRA /
XTRA / O UTDOOR and SECULIFEHIT AM / MD only
11 Scale for analog display
12 Pointer for analog display (bar graph – pointer) depending upon setting in SET menu for the A .
diSP parameter
Triangle appears: indicates overranging
13 Diode measurement selected
14 Selected type of current
15 TRMS measurement
16 Pt100(0): selected platinum resistance thermometer with automatic recognition of Pt100/Pt1000, with METRAHIT AM XTRA /
XTRA / O UTDOOR and SECULIFEHIT AM / MD only
17 Type K: temperature measurement with type K (NiCr-Ni) thermocouple
18 sec (seconds): unit of time
19
REL: relative measurement with reference to offset
20 Unit of measure
21 ZERO: zero balancing active
22 Warning regarding dangerous voltage: U > 55 V AC or U > 70 V DC
23 Continuity test with acoustic signal is active
24 h (hours): unit of time
13
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Operating Overview – Connections, Keys, Rotary Switch, Symbols
Symbols of Rotary Switch Positions
Switch FUNC Display
V~
Hz (V)
V~ 1kHz
0/4 V~ AC TRMS
1 Hz ~ AC
2 V Fil ~ AC TRMS
Hz (V) 1kHz
V~ 1 M
3 Hz Fil ~ AC
0/4 V~ AC TRMS
V~ 1kHz 1 V Fil ~ AC TRMS
Hz (V) 1kHz
Hz (V) 1 M
2 Hz Fil ~ AC
3 Hz ~ AC
V 0/2 V DC
V
MHz
%
1 V DC AC TRMS
0/2 MHz
1 %
—
0/2
1 V DC
A
A
Temp TC 0/2
C Typ-K
Temp RTD 1
C Pt100/1000
— nF
0/2 A DC
1 A DC AC TRMS
A~
Hz (A)
0/2 A~ AC TRMS
A
A
1 Hz ~ AC
0/2 A DC
1 A DC AC TRMS
Hz (
A 0/2 A~ AC TRMS
A ) 1 Hz ~ AC
Measuring Function
Alternating voltage, TRMS AC, full bandwidth
Voltage frequency, full bandwidth
Alternating voltage, TRMS AC, with low-pass (1 kHz)
Voltage frequency, with low-pass (1 kHz)
Alternating voltage, TRMS AC, full bandwidth, input 1 M
Alternating voltage, TRMS AC, up to 1 kHz, input 1 M
Voltage frequency, up to 1 kHz, input 1 M
Voltage frequency, full bandwidth, input 1 M
Direct voltage
Pulsating voltage, TRMS ( V
ACDC
(High) frequency @ 5 V~
Duty cycle @ 5 V~
Diode voltage
Temperature thermocouple Type K
=
Temperature with resistance thermometer Pt100/Pt1000
Capacitance
Direct current value
Pulsating current value, TRMS AC DC
V
AC
2
+ V
DC
2
(Direct current) resistance
Continuity testing
with acoustic signal
)
Alternating current value, TRMS AC
Current frequency
Direct current value with AC DC clip-on current sensor 1 V:1/10/100/1000 A
METRAHIT
AM XTRA
XTRA
O UTDOOR
SECULIFEHIT
AM / MD
—
Pulsating current value, TRMS, with AC DC clip-on current sensor, see above
Alternating current strength, TRMS, with clip-on current sensor, see above
Current frequency
—
—
—
METRAHIT
AM TECH
T ECH
—
—
—
METRAHIT
AM PRO
P RO
METRAHIT
AM BASE
B ASE
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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User Interface Symbols in the Following Chapters
... Scroll through main menu
... Scroll through sub-menu
Select decimal point
time
1nFo
Increase/decrease value
Sub-menu/parameter (7-segment font)
Main menu (7-segment font, boldface)
Operating Overview – Connections, Keys, Rotary Switch, Symbols
Position of the infrared interface, window on the top of the instrument ( METRAHIT AM XTRA / XTRA / O UTDOOR and
SECULIFEHIT AM / MD only)
5 V / 600 mA
Position of the power pack connector socket, see also chapter 3.1
( METRAHIT AM XTRA / XTRA / O UTDOOR and
SECULIFEHIT AM / MD only)
Symbols on the Device
Fuse for current measuring ranges, see chapter 9.3
(not METRAHIT AM BASE / B ASE )
!
Warning concerning a point of danger
(attention: observe documentation!)
The device may not be disposed of with the trash.
Further information regarding the WEEE mark can be
Ground
CAT III / IV Measuring category III or IV device, see also
“Measuring Categories and their Significance per IEC
61010-1” on page 8
Continuous, doubled or reinforced insulation
Calibration seal (blue seal):
XY123
D-K-
15080-01-01
2012-08
Serial number
German Accrediation Body GmbH – Calibration lab
Registration number
Date of calibraion (year – month) see also “Recalibration” on page 65.
Indicates EC conformity
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Initial Start-Up – Setup
3
!
Initial Start-Up
3.1
Inserting Batteries or Rechargeable Batteries
Be certain to refer to chapter 9.2 regarding correct battery installation.
Momentary battery voltage can be queried in the Info menu (see chapter 6.3).
Attention!
Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries.
Display Illumination
After the instrument has been switched on, background illumination can be activated by briefly pressing the ON / OFF | LIGHT key. Illumination is switched back off by once again pressing the same key, or automatically after approximately 1 minute.
Switching the Instrument On via PC (METRAHIT AM XTRA / XTRA / O UTDOOR and SECULIFEHIT AM / MD only)
The multimeter is switched on after transmission of a data block from the PC, assuming the “ irStb ” has been set to “ ir on ” (see chapter 6.4). However, we recommend using the power saving mode: “ ir off ”.
Operation with the Power Pack
(accessory for METRAHIT AM XTRA / XTRA / O UTDOOR and
SECULIFEHIT AM / MD , not included, see chapter 10.3)
Installed batteries are disconnected electronically if the NA X-TRA power pack is used, and need not be removed from the instrument.
If rechargeable batteries are used, they must be recharged externally.
If the external power supply is switched off, the device is automatically switched to battery operation without interruption.
3.2
Activation
Switching the Instrument On Manually
➭ Press the ON / OFF | LIGHT key until the display appears.
Power-up is acknowledged with a brief acoustic signal. As long as the key is held depressed, all of the segments at the liquid crystal display (LCD) are illuminated.
The LCD is depicted on page 13.
The instrument is ready for use as soon as the key is released.
16
Note
Electrical discharge and high frequency interference may cause incorrect displays to appear, and may disable the measuring sequence. Disconnect the device from the measuring circuit.
Switch the instrument off and back on again in order to reset. If the problem persists, briefly dislodge the battery from the connector contacts (see also chapter 9.2).
3.3
Setting the Operating Parameters
Setting Time and Date
See the “ t iME ” and “ dAtE ” parameter in chapter 6.4.
Display Modes for the Analog Display
Selection can be made from two different display modes
(see “ A .
diSP ” parameter in chapter 6.4).
Display Modes for the Digital Display
Selection can be made from two different display modes (see
“ 0 .
diSP ” parameter in chapter 6.4).
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Initial Start-Up – Setup
3.4
Switching the Instrument Off
Switching the Instrument Off Manually
➭ Press the ON / OFF | LIGHT key until 0FF appears at the display.
Shutdown is acknowledged with a brief acoustic signal.
Automatic Shutdown
The instrument is switched off automatically if the measured value remains unchanged for a long period of time (maximum measured value fluctuation of approx. 0.8% of the measuring range per minute, or 1
C or 1
F per minute), and if none of the keys or the rotary switch have been activated before a selected period of time in minutes has elapsed (see “ APoFF ” parameter on page 49.)
Shutdown is acknowledged with a brief acoustic signal.
Exceptions include:
Transmission and memory mode operation, continuous operation and whenever a dangerous voltage is applied to the input (U > 55
V AC or U > 70 V DC).
Disabling Automatic Shutdown
The instrument can be set to continuous operation.
➭ Simultaneously press the this end.
ON / OFF
LIGHT
and
FUNC
ENTER
keys to
The “Continuous On” function is indicated at by means of the
ON
display to the right of the battery symbol.
The “Continuous On” setting can only be cancelled by changing the respective parameter, and not by switching the instrument off
(see “ APoFF ” on page 49).
ON / OFF
LIGHT
ON / OFF
LIGHT
ON / OFF
LIGHT
ON / OFF
LIGHT
Long
(1 s)
8 .
8 .
8 .
8 .
8
Auto-Range
000 .
00
Illumination On
000 .
00
Illumination Off
0ff
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Control Functions
4 Control Functions
4.1
Selecting Measuring Functions and Measuring Ranges
The rotary switch is linked to the automatic socket blocking mechanism, which only allows access to two connector jacks for each function. Be certain to remove the appropriate plug from its respective jack before switching to and from the “A” functions.
The socket blocking mechanism prevents the user from inadvertently turning the selector switch to impermissible functions after the measurement cables have been plugged in to the instrument.
4.1.1 Automatic Range Selection
The multimeter is equipped with auto-ranging for all measuring functions, except for temperature measurement, diode and continuity testing, and the MHz measuring function. Auto-ranging is active as soon as the instrument is switched on. The instrument automatically selects the measuring range which allows for highest possible resolution of the applied quantity. When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.
The Auto-Ranging Function
The multimeter is switched automatically to the next higher range at
( 11999 d + 1 d
01200 d), and to the next lower range at
( 01100 d - 1 d
10990 d).
Exception, capacitance measurement:
The multimeter is switched automatically to the next higher range at
( 1199 d + 1 d
0120 d), and to the next lower range at
( 0110 d - 1 d
1099 d).
4.1.2 Manual Measuring Range Selection
Auto-ranging can be deactivated and measuring ranges can be selected manually in accordance with the following table by pressing the MAN / AUTO button.
The desired measuring range can then be selected with the or
scroll key.
The instrument is automatically returned to range selection when the MAN / AUTO key is pressed, the rotary switch is activated or the instrument is switched off and back on again.
Overview: Auto-Ranging and Manual Range Selection
Function
MAN / AUTO
or
MAN / AUTO
Manual mode active: utilized measuring range is fixed
Range switching sequence for:
V: 100 mV*
1 V
10 V
100 V
1000 V
Hz: 100 Hz
1 kHz
10 kHz
100 kHz
: 100
1 k
10 k
100 k
1 M
10 M
40 M
A: METRAHIT AM XTRA / XTRA / O UTDOOR and
SECULIFEHIT AM / MD :
100
A
1 mA
10 mA
100 mA
1
A
10 A (16 A)
METRAHIT AM TECH / T ECH :
10 mA
100 mA
1
A
10 A (16 A)
METRAHIT AM PRO / P RO : 1A
10 A (16 A)
A : METRAHITAM BASE / B ASE and METRAHIT AM TECH /
T ECH : see chapter 5.7.3 ff
F: METRAHIT AM XTRA / XTRA / O UTDOOR ,
SECULIFEHIT AM / MD and METRAHIT AM TECH / T ECH :
10 nF
100 nF
1
F
10
F
100
F
1000
F
Return to automatic measuring range selection
Display
MAN
MAN
—
* Via manual measuring range selection only
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Control Functions
4.1.3 Quick Measurements
Measurements performed using a suitable fixed measuring range are executed more quickly than those which utilize automatic range selection. Quick measurement is made possible with the following two functions:
• Manual measuring range selection , i.e. selection of the measuring or range with the best resolution (see chapter 4.1.2).
• With the DATA function (see chapter 4.4). In this way, the appropriate measuring range is selected automatically after the first measurement and the second measurement is executed more quickly.
Zero balancing and reference value adjustment can be used for auto-ranging, as well as for manual measuring range selection.
Zero Balancing
➭ Plug the measurement cables into the instrument and connect the free ends to each other, except for capacitance measurement in which case the ends of the cables are not connected to each other.
➭
Briefly press the ZERO | ESC key.
The instrument acknowledges zero balancing with an acoustic signal, and the “ZERO
REL” symbol appears at the LCD. The value measured at the moment the key is pressed serves as a reference value.
➭
Zero balancing can be cleared by once again pressing the
ZERO | ESC key.
The selected measuring range remains active for the subsequent series of measurements with these two functions.
4.2
Zero Offset / Relative Measurements
Depending upon deviation from the zero point, zero balancing or a reference value for relative measurements can be stored to memory:
Note
As a result of TRMS measurement, the multimeter displays a residual value of 1 to 30 digits with short-circuited measurement cables as the zero point for V AC / I AC or V(AC+DC) /
I (AC+DC) measurements (non-linearity of the TRMS converter). This has no influence on specified accuracy above
2% of the measuring range (or 3% in the mV range).
Deviation from zero
– With short-circuited measurement cables for V,
, A
– With open input for capacitance unit of measure F
0 to 200 digits
> 200 to 5000 digits
Display
ZERO
REL
REL
The applicable reference or correction value is deducted individually for the respective measuring function as an offset from all subsequent measurements, and remains in memory until deleted, or until the multimeter is switched off.
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Setting the Reference Value
➭ Plug the measuring cables into the instrument and measure a reference value (max. 5000 digits).
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Control Functions
➭ Briefly press the ZERO | ESC key.
The instrument acknowledges storage of the reference value with an acoustic signal, and the “ZERO
REL” or the “
REL” symbol appears at the LCD. The value measured at the moment the key is pressed serves as a reference value.
➭ The reference value can be cleared by once again pressing the
ZERO | ESC key.
Notes Regarding Relative Measurement
• Relative measurement effects the digital display only. The analog display continues to read out the original measured value.
• In the case of relative measurement,
/ F or AC quantities may also appear as negative values.
4.3
Display (LCD)
4.3.1 Digital Display
Measured Value, Unit of Measure, Type of Current, Polarity
The measured value with decimal and plus or minus sign appears at the digital display. The selected unit of measure and type of current are displayed as well. A minus sign appears to the left of the value during measurement of zero-frequency quantities, if the plus pole of the measured quantity is applied to the “
” input.
The “ 0 .
diSP ” parameter can be used to determine whether leading zeros will be appear or be suppressed at the measured value display (see chapter 6.4).
Overranging
If the upper range limit of 12,000 digits is exceeded “ 0L ” (overload) appears at the display.
Exceptions: “ 0L ” appears as of 1200 digits for capacitance measurement, and as of 5100 digits for diode testing.
20
4.3.2 Analog Display
Measured Value, Polarity
The analog display demonstrates the dynamic performance of a moving-coil mechanism. This display is especially advantageous for observing measured value fluctuation, and for balancing procedures.
Two different display modes can be selected in the “ SET ” menu with the help of the “ A .
diSP ” parameter (see chapter 6.4):
• Bar graph
• Pointer: The current measured value is tracked in real-time.
The analog scale displays a negative range of 2 scale divisions for the measurement of zero-frequency quantities, allowing for precise observation of measured value fluctuation around zero. If the measured value exceeds the negative range of 2 scale divisions, polarity is reversed at the analog display.
Scaling of the analog scale is automatic. This is very helpful for manual measuring range selection.
Overranging
Overranging in the positive range is displayed by means of the right triangle symbol.
Refresh Rate
In the bar graph and pointer modes, the analog display is refreshed 40 times per second.
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Control Functions
4.4
Measured Value Storage: DATA (auto-hold / compare)
An individual measured value can be automatically “frozen” with the DATA function (auto-hold). This is useful, for example, when contacting the measuring points with the test probes requires your full attention. After the measuring signal has been applied and the measured value has settled in in accordance with the
“condition” listed in the table below, the measured value is frozen at the digital display and an acoustic signal is generated. The test probes can now be removed from the measuring points, and the measured value can be read from the digital display. If the measuring signal falls below the value specified in the table, the function is reactivated for storage of the next value.
Measured Value Comparison (DATA Compare)
If the currently frozen value deviates from the first saved value by less than 100 digits, the acoustic signal is generated twice. If deviation is greater than 100 digits, only a brief acoustic signal is generated.
Note
The DATA function has no effect on the analog display, at which the current measured value continues to appear.
However, when the digital display if “frozen”, the decimal point is fixed as well (fixed measuring range, symbol: MAN).
The selected measuring range should not be manually changed as long as the DATA function is active.
The DATA function is deactivated by pressing and holding the
DATA / MIN / MAX key (for approx. 1 second), when the measuring function is changed or when the instrument is switched off and back on again.
V, A, Hz
100%
F, MHz, % of measuring range
10%
Activated
Save Reactivated
10,000 digits
Save t [s]
DATA
Function
Press
DATA /
Min/Max
Condition
Measuring
Function
Measuring
Signal
Response from Instrument
Display
MV
Digital
DATA
Acoustic blinks Once Activate
Save
(stabilized measured value)
Reactivate
1)
Brief
V, A, F, Hz,
MHz, %
V, A, F, Hz,
MHz, %
> 10% of R
0L
< 10% of R
= 0L
Is displayed
Stored
MV
Static
Blinks
Once
Twice
2)
Change to
Min/Max
Exit
Brief See table in chapter 4.4.1
Long Is cleared Is cleared Twice
1)
2)
Reactivation results from falling short of specified measured value limits.
Two acoustic signals are generated the first time a measured value is saved as a reference value. For subsequent data hold, two acoustic signals are only generated if the currently frozen value deviates from the first saved value by less than 100 digits.
Key: MV = measured value, R = measuring range
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Control Functions
Example
The voltage measuring range is set manually to 10 V.
The first measured value is 5 V, which is stored to memory because it is greater than 10% of the measuring range (= 1 V), and is thus reliably above the background noise level. As soon as the measured values drops to less than 10% of the measuring range, i.e. amounts to less than 1 V which corresponds to removal of the test probes from the measuring point, the instrument is ready to store a new value.
4.4.1 Saving Minimum and Maximum Values – MIN/MAX Function
Minimum and maximum measured values applied to the measuring instrument’s input after the Min/Max function has been activated can be “frozen” at the display. The most important use of this function is the determination of minimum and maximum values during long-term measured value observation.
The Min/Max function can be activated in all measuring functions.
The Min/Max function has no effect on the analog display, at which the momentary measured value continues to appear.
Apply the measured quantity to the instrument and set the measuring range with the MAN / AUTO key before activating the
Min/Max function.
The Min/Max function is deactivated by pressing and holding the
DATA / MIN / MAX key (for approx. 1 second), when the measuring function is changed or when the instrument is switched off and back on again.
Note
As opposed to the DATA function, the Min/Max function can also be used for temperature measurement.
Min/Max
Function
Press
DATA /
Min/Max
1
Activate and save
2
Save and display
2 x brief
Brief
Brief
3
Return to 1
Stop
Brief
Long
Min. and Max.
Measured Values are saved
Storage continues in background, new min. and max.
values are displayed.
Same as 1, stored values are not deleted
Response from Instrument
Display
Measured Value
Digital
Max.
Min.
Acoustic
Signal
Momentary measured value
Saved min. value
Saved max. value
Max and min.
Min.
Max.
2 x
1 x
1 x
Same as 1
Same as 1
1 x
Are deleted
Momentary measured value
Is deleted
2 x
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Control Functions
4.5
Measurement Data Recording (METRAHIT AM XTRA / XTRA /
O UTDOOR and SECULIFEHIT AM / MD only)
The METRAHIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD is capable of recording measurement data using an adjustable sampling rate for long periods of time in the form of measurement series.
Data are stored to a battery backed memory module, and are retained even after the multimeter is switched off. The system acquires measured values relative to real-time.
Stored measured values can subsequently be read out with the help of METRAwin 10 software. The only prerequisite is a PC which is connected by means of an interface cable to the
USB X-TRA bi-directional interface adapter, which is in turn plugged onto the METRAHIT AM XTRA / XTRA / O UTDOOR or
SECULIFEHIT AM / MD . See also chapter 7.
Memory Parameters Overview (METRAHIT AM XTRA / XTRA / O UTDOOR or
SECULIFEHIT AM / MD only)
Parameter Page: header
CLEAr 24: Clear Memory
EMpty
0CCvP
24: Clear Memory – appears after CLEAr
24: Querying Memory Occupancy rAtE 48: rAtE – set the sampling rate (AM XTRA / XTRA / O UTDOOR / HIT AM / MD only)
StArt
StoP
23: Starting Recording via Menu Functions
24: Ending Recording
The STORE Menu Function
➭
First set the sampling rate for memory mode operation (see rAtE parameter in chapter 6.4) , and then start memory mode operation.
➭
First select the desired measuring function and an appropriate measuring range.
➭ Check the battery charge level before starting long-term measurement recordings (see chapter 6.3).
Connect the NA X-TRA power pack if required.
Starting Recording via Menu Functions
➭ Switch to the “ SET ” mode by pressing MEASURE | SETUP and select the “ StorE ” menu.
MEASURE
SETUP
1nFo ... StorE
FUNC
ENTER
000 .
0 % StArt
FUNC
ENTER
➭
Memory mode operation is started by pressing FUNC | ENTER .
STORE appears underneath the analog display and indicates that memory mode operation has been activated.
“ StoP ” appears at the digital display.
➭ Press MEASURE | SETUP in order to return to the measuring function.
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Control Functions
During Recording
STORE is displayed underneath the analog display during memory mode operation, and memory occupancy can be controlled:
Querying Memory Occupancy
Memory occupancy can be queried during recording with the help of the “ 1nFo ” menu (see also chapter 6.3).
Memory occupancy range: 000 .
1 % to 099 .
9 %.
StoP 000 .
3 %
MEASURE
SETUP
1nFo
FUNC
ENTER
bAtt :
...
0CCvP %: 017 .
4 %
The following message appears as soon as memory is full: “ 100 .
0 %”.
In order to be able to observe measured values during recording , switch to the measuring function by pressing MEASURE | SETUP .
The display is returned to the memory menu after once again pressing MEASURE | SETUP .
A new memory block is created when another measuring function is selected with the rotary switch or the FUNC | ENTER key. Data storage then continues automatically.
Memory occupancy can be queried before recording is started via the “ StorE ” menu.
MEASURE
SETUP
1nFo ... StorE
FUNC
ENTER
017 .
4 % StArt
Ending Recording
➭ “ StoP ” appears at the display after pressing MEASURE | SETUP .
Clear Memory
This function deletes all measured values from memory!
This function cannot be executed during memory mode operation.
StoP
FUNC
ENTER start
MEASURE
SETUP
1nFo ... StorE
CLEAr
FUNC
ENTER empty
FUNC
ENTER
017 .4
% w StArt
➭ Acknowledge the “ StoP ” display by pressing FUNC | ENTER .
STORE is cleared from the display, indicating that recording has been ended.
➭
Press MEASURE | SETUP in order to return to the measuring function.
➭ Memory mode operation can also be exited by switching the multimeter off.
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V/Hz,
, Temperature, and A/Hz Measurements
5 Measurements
5.1
Voltage Measurement
Notes Regarding Voltage Measurement
• The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous voltages are otherwise not indicated, and the instrument may be damaged.
• The multimeter may only be operated by persons who are capable of recognizing contact hazards and taking the appropriate safety precautions. Contact hazards exist anywhere, where voltages of greater than 33 V RMS may occur.
The test probes may only be only gripped up to the finger guard. Do not touch the metallic test probes under any circumstances.
• Avoid working alone when taking measurements which involve contact hazards . Be certain that a second person is present.
• Maximum permissible voltage between the connector sockets,
(9 and 10) and ground (8) is 1000 V for measuring category III, and 600 V for measuring category IV.
Exception SECULIFE HIT AM /HIT MD : 600 V CAT III and 300 V CAT IV.
• Be prepared for the occurrence of unexpected voltages at devices under test (e.g. defective devices). For example, capacitors may be dangerously charged.
• No measurements may be made with this instrument in electrical circuits with corona discharge (high-voltage).
• Special care is required when measurements are made in HF electrical circuits. Dangerous pulsating voltages may be present.
• Be aware of the fact that dangerous voltage spikes are not displayed during measurement with the low-pass filter.
We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.
• Be absolutely certain that the measuring ranges are not overloaded beyond their allowable capacities. Limit values are included in chapter 8, “Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the “Overload Capacity” column.
Scope of Functions, Voltage Measurement
Function METRA HIT
AM XTRA
XTRA
O UTDOOR /
SECULIFEHIT
AM / MD
METRAHIT
AM TECH
T ECH
METRAHIT
AM PRO
P RO
METRAHIT
AM BASE
B ASE
V AC / Hz TRMS
(Ri
9 M
)
V AC / LP filter 1 kHz
(Ri = 1 M
2)
) TRMS
1)
V AC+DC TRMS
(Ri
9 M
)
V DC (Ri
9 M
)
MHz at 5 V AC
Duty cycle as %
—
—
—
—
—
—
—
Freq. response, V AC 20 kHz 10 kHz 10 kHz 1 kHz
1)
2)
A 1 kHz low-pass filter can be used in this case, in order to filter out high frequency pulses of greater than 1 kHz, for example when performing measurements at pulsed motor drives.
Input resistance of approx. 1 M
. Erroneous displays resulting from capacitive coupling during voltage measurement in power supply systems are reduced to a minimum in this way.
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5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC)
Note
Only to observe for METRAHIT AM TECH / T ECH : Set the CL iP parameter to 0FF in the current clip setup menu. Otherwise all measured values are displayed in amperes, and are corrected by the amount resulting from the selected transformation ratio for an interconnected clip-on current sensor.
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
1 / 10 / 100 / 1000 / 0ff
rAtE ... CL IP
FUNC
ENTER
➭ In accordance with the voltage to be measured, turn the rotary switch to V or V .
➭ Connect the measurement cables as shown.
The “
” connector jack should be grounded.
Note
An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.
Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for voltage measurement! If the fuse’s blowing limits are exceeded as a result of operator error, both the operator and the instrument are in danger!
With the rotary switch in the V position, the multimeter is always set to the 1 V measuring range immediately after it is switched on.
As soon a the MAN / AUTO key is pressed, and assuming the measured value is less than 90 mV, the multimeter is switched to the mV measuring range.
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V/Hz,
, Temperature, and A/Hz Measurements
V
V
020
V
.
00 DC
FUNC
ENTER
V
020
V
.
00
AC
TRMS
DC V
V
Temp COM
Measuring Ranges:
V= : 100 mV 1000 V
– (+)
+ (–)
V : 100 mV
1000 V
Max. 1000 V (< 10 kHz)
Max. 100 V (> 10 kHz)
Hz: 1 Hz
100 kHz
P max
= 3 x 10
6
V x Hz for U > 100 V
Warnings regarding dangerous voltage:
> 55 V AC or > 70 V DC:
> 1000 V:
230 .
0
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V/Hz,
, Temperature, and A/Hz Measurements
5.1.2 Alternating Voltage Measurement with 1 M
Load Resistance and Frequency Measurement with Selectable Low-Pass Filter
(METRAHIT AM X-TRA / AM TECH / AM PRO / XTRA / O UTDOOR / T ECH /
P RO / SECULIFEHIT AM / MD only)
The measuring instrument includes a V
1M
switch position for electricians with an input resistance of approximately 1 M
.
Erroneous displays resulting from capacitive coupling during voltage measurement in power supply systems are reduced to a minimum in this way.
Note
T ECH : see note in chapter 5.1.1.
➭ In accordance with the voltage to be measured, turn the rotary switch to V~
1M
or
1 kHz
.
➭ Connect the measurement cables as shown.
The “ ” connector jack should be grounded.
Voltage Measurement
Frequency Measurement
➭ Apply the measured quantity is the same way as for voltage measurement.
➭ Manually select the measuring range for the voltage amplitude.
When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.
➭ You can switch back and forth between frequency measurement with and without low-pass filter.
Press the FUNC | ENTER multifunction key repeatedly until unit of measure Hz or Hz/Fil appears at the display.
Lowest measurable frequencies and maximum allowable voltages are included in chapter 8, “Technical Data”.
Measurement with Low-Pass Filter
Note
An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.
Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for voltage measurement! If the fuse’s blowing limits are exceeded as a result of operator error, both the operator and the instrument are in danger!
➭ You can switch back and forth between voltage measurement with and without low-pass filter.
➭ Press the FUNC | ENTER multifunction key repeatedly until unit of measure V or V/Fil appears at the display.
28
!
Attention!
Be aware of the fact that dangerous voltage spikes are not displayed during this type of measurement (see also “Voltage
Comparator”.
We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.
A 1 kHz low-pass filter can be activated if required, in order to filter out high frequency pulses of greater than 1 kHz, for example when performing measurements at pulsed motor drives, i.e. undesired voltages of greater than 1 kHz can be suppressed.
The active low-pass filter is indicated by the Fil display. The multimeter is automatically switched to manual measuring range selection.
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V/Hz,
, Temperature, and A/Hz Measurements
V
Temp COM
~
Warnings regarding dangerous voltage:
> 55 V AC or > 70 V DC:
> 1000 V:
230 .
0
Measuring Ranges:
V~: 100 mV
1000 V
Max. 1000 V (< 10 kHz)
Max. 100 V (> 10 kHz)
Hz: 1 Hz
100 kHz
P max
= 3 x 10
6
V x Hz for U > 100 V
Voltage Comparator for Displaying Dangerous Voltage
The input signal or measuring signal is checked by a voltage comparator for dangerous spikes, because these do not appear at the display when the low-pass filter is used.
At voltages of greater than 55 V AC or 70 V DC, a danger symbol appears at the display: .
V~
1M
!
!
1 kHz
V~ with Filter
Hz with Filter
0225
V
.
6
AC
TRMS
FUNC
ENTER
V~
0226
V F il
.
0
AC
TRMS
FUNC
ENTER
V~
1 kHz
050
Hz
.
00
F il
FUNC
ENTER
AC
Hz
1 kHz
049
Hz
.
99
AC
FUNC
ENTER
Hz
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V/Hz,
, Temperature, and A/Hz Measurements
5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz
30 with Selectable Low-Pass Filter
(METRAHIT AM X-TRA / AM TECH / AM PRO / X-
P RO / SECULIFEHIT
Note
METRAHIT AM TECH : see note in chapter 5.1.1.
➭
In accordance with the voltage or frequency to be measured, turn the rotary switch to V~ or Hz.
➭ Connect the measurement cables as shown.
The “
” connector jack should be grounded.
Voltage Measurement
AM /
/
MD
T
only)
ECH
TRA / O UTDOOR / T ECH /
Note
An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.
Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for voltage measurement! If the fuse’s blowing limits are exceeded as a result of operator error, both the operator and the instrument are in danger!
➭ You can switch back and forth between voltage measurement with and without low-pass filter.
➭ Press the FUNC | ENTER multifunction key repeatedly until unit of measure V or V/Fil appears at the display.
Frequency Measurement
➭
Apply the measured quantity is the same way as for voltage measurement.
➭ Manually select the measuring range for the voltage amplitude.
When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.
➭
You can switch back and forth between frequency measurement with and without low-pass filter.
Press the FUNC | ENTER multifunction key repeatedly until unit of measure Hz or Hz/Fil appears at the display.
Lowest measurable frequencies and maximum allowable voltages are included in chapter 8, “Technical Data”.
Measurement with Low-Pass Filter
!
Attention!
Be aware of the fact that dangerous voltage spikes are not displayed during this type of measurement (see also “Voltage
Comparator”.
We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.
A 1 kHz low-pass filter can be activated if required, in order to filter out high frequency pulses of greater than 1 kHz, for example when performing measurements at pulsed motor drives, i.e. undesired voltages of greater than 1 kHz can be suppressed.
The active low-pass filter is indicated by the Fil display. The multimeter is automatically switched to manual measuring range selection.
The specified measuring accuracy is not achieved when the filter is activated and signals are greater than 100 Hz.
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V/Hz,
, Temperature, and A/Hz Measurements
V
Temp COM
~
Warnings regarding dangerous voltage:
> 55 V AC or > 70 V DC:
> 1000 V:
230 .
0
Measuring Ranges:
V~: 100 mV
1000 V
Max. 1000 V (< 10 kHz)
Max. 100 V (> 10 kHz)
Hz: 1 Hz
100 kHz
P max
= 3 x 10
6
V x Hz for U > 100 V
Voltage Comparator for Displaying Dangerous Voltage
The input signal or measuring signal is checked by a voltage comparator for dangerous spikes, because these do not appear at the display when the low-pass filter is used.
At voltages of greater than 55 V AC or 70 V DC, a danger symbol appears at the display:
!
!
V~
Hz
V~ with Filter
Hz with Filter
0230
V
.
6
AC
TRMS
FUNC
ENTER
V~
050
Hz
.
03
FUNC
ENTER
AC
Hz
0229
V F il
.
6
AC
TRMS
FUNC
ENTER
V~
1 kHz
050
Hz
.
00
AC
F il
FUNC
ENTER
Hz
1 kHz
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32
V/Hz,
, Temperature, and A/Hz Measurements
5.1.4 Frequency and Duty Cycle Measurements
(METRA HIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only)
➭ Set the rotary switch to MHz or %.
➭ Connect the measurement cables as shown.
Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for frequency or duty cycle measurement!
!
Attention!
The applied signal voltage may not exceed 5 V.
Frequency Measurement, MHz
A 5 V signal with a frequency of up to 1 MHz is measured and displayed using MHz as a unit of measure. Pulse frequency demonstrates the reciprocal value of pulse period.
Duty Cycle Measurement, t
E
/t
P
The ratio of pulse duration to pulse period is measured with periodic square-wave signals and displayed as a percentage.
duty cycle (%) = pulse duration (t
E
) pulse period (t
P
)
100
Note
The applied frequency must remain constant during duty cycle measurement.
MHz
MHz
%
1 .
0323
MHz
FUNC
ENTER f
P
U t
E t
P
t
Pulse Time Quantities f
P t
E t
P t
P
– t
E t
E
/t
P pulse frequency = 1/t
P pulse duration interpulse period pulse or duty cycle
%
002 .
00
% t
E
/t
P
Measuring Ranges:
MHz t
E
/t
P
100 Hz ... 1 kHz 2 ... 98%
... 10 kHz 5 ... 95%
... 100 kHz 10 ... 90%
V
Temp COM
!
Max. 5 V
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5.2
Resistance Measurement,
➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors.
➭ Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Refer to chapter 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
➭ Set the rotary switch to “ ”.
➭
Connect the device under test as shown.
Note
Use short or shielded measurement cables in the case of high-impedance resistance.
Improving Accuracy by means of Zero Balancing
Cable resistance and contact resistance can be eliminated in all measuring ranges by means of zero balancing (see chapter 4.2).
V/Hz,
, Temperature, and A/Hz Measurements
k
000 .
00
Measuring Ranges:
100
40 M
V
Temp COM
0 V !
!
R x
R x
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34
V/Hz,
, Temperature, and A/Hz Measurements
5.3
Continuity Test
➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors.
➭ Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
➭ Set the rotary switch to .
➭ Connect the conductor path under test as shown.
Depending upon the selected limit value, the multimeter generates a continuous acoustic signal in the case of continuity or short-circuit, i.e. at a value of less than the selected limit value.
“ 0L ” appears at the display in the case of an open connection.
The limit value can be adjusted in the “ SETUP ” menu (see also chapter 6.4):
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
1 , 10 , 20 , 30 , 40 , 90 rAtE ... bEEP
FUNC
ENTER
(10 = default setting)
0 V !
!
000 .
8
FUNC
ENTER
V
Temp
0 .
443
V
DC
COM
R < 1, 10 , 20, 30, 40, 90
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V/Hz,
, Temperature, and A/Hz Measurements
5.4
Diode Testing with a Constant Current of 1 mA
➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors.
➭ Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Refer to chapter 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
➭ Set the rotary switch to .
➭
Press the FUNC | ENTER key.
➭
Connect the device under test as shown.
Conducting Direction and Short-Circuit
The instrument displays forward voltage in volts (display: 4 places). As long as voltage drop does not exceed the maximum display value of 5.1 V, several series connected components or reference diodes can be tested with a small reference voltage and reference diodes.
Reverse Direction and Interruption
The measuring instrument indicates overload 0L .
Note
Resistors and semiconductor paths connected in parallel to the diode distort measurement results!
0 V !
!
V
Temp
000 .
8
FUNC
ENTER
0 .
443
V
DC
COM
0
.
654
Measuring Range: to 5.100 V +
0
.
L
Reverse Direction Forward Direction
–
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V/Hz,
, Temperature, and A/Hz Measurements
5.5
Temperature Measurement
Temperature measurement is performed with a type K thermocouple (accessory, not included), which is connected to the voltage input. Alternatively, a Pt100 or Pt1000 resistance thermometer can be used with the METRA HIT AM XTRA / XTRA /
O UTDOOR / SECULIFEHIT AM / MD .
Selecting the Unit of Measure for Temperature
MEASURE
SETUP
1nFo ... tEMP
FUNC
ENTER
°C / °F
FUNC
ENTER
( °C = default setting)
5.5.1 Measurement with Thermocouples, Temp TC
➭ Set the rotary switch to “Temp
TC
”.
Note
METRA HIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only:
The last selected temperature measurement or the last selected temperature sensor, i.e. type K or Pt100/Pt1000, remains in memory and is accordingly displayed. Press the
FUNC | ENTER key in order to change to the other measuring function if required.
➭ The reference temperature is measured at the internal reference junction (see parameter “ 1tEMP ” in chapter 6.3 regarding querying).
Note
The internal reference temperature (temperature of the internal reference junction) is measured by a temperature sensor inside of the instrument. This may be somewhat above room temperature as a result of internal heat-up, or moving from warmer to colder surroundings or vice versa.
➭ Connect the sensor to the two accessible jacks. The instrument displays the measured temperature using the selected unit of measure.
Temp
TC
Temp
RTD
0023 .
3
°C
Type K
TC
FUNC
ENTER
V
Temp COM
0256 .
0
°C
Pt1000
RTD
TE (TC)
Measuring Range
TE (TC) K (NiCr-Ni) –250.0
+1372.0
C
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5.5.2 Measurement with Resistance Thermometers
(METRA HIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only)
➭ Set the rotary switch to “Temp
TC
” or “Temp
RTD
”.
The last selected temperature measurement or sensor, i.e. type K or Pt100/Pt1000, remains in memory and is accordingly displayed. Press the FUNC | ENTER key in order to change to the other measuring function if required. The sensor type, i.e. Pt100 or Pt1000, is detected automatically and displayed.
There are two different ways to compensate for cable resistance:
Automatic Compensation
➭
Press the ZERO | ESC key.
“Short leads” appears at the display.
If you prefer to enter cable resistance directly, you can skip the following entry prompt.
➭ Short circuit the measuring instrument’s connector cables.
“ 000 .
00 ” appears at the display. After pressing the FUNC |
ENTER key, automatic compensation of cable resistance is activated for all subsequent measurements. The short-circuit can now be eliminated, and the device is ready for use.
Entering Cable Resistance
➭
Press the ZERO | ESC key once again in the automatic compensation menu.
➭ Enter the known resistance of the connector cables with the scroll keys: Select the digit to be changes with the keys, and change the respectively selected digit with the keys.
The default value is 0.43 . Values can be selected within a range of 0 to 50
.
V/Hz,
, Temperature, and A/Hz Measurements
➭ Upon pressing the FUNC | ENTER key, the selected value is activated and the display is returned to the measuring function. Cable resistance remains in memory even after the instrument has been switched off.
Temp
RTD
Temp
TC
0023 .
3
°C Type K
FUNC
ENTER
TC
Measuring Ranges
RTD Pt100 –200.0
+850.0
C
RTD Pt1000 –150.0
+850.0
C
0025 .
6
°C
Pt1000
FUNC
ENTER
ZERO
ESC
RTD
V
Temp
Automatic
Compensation
Short Leads
COM
R L
000 .
00
ZERO
ESC
RTD R L
000 .
50
Enter Cable Resistance
FUNC
ENTER
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V/Hz,
, Temperature, and A/Hz Measurements
5.6
Capacitance Measurement (METRA HIT AM XTRA / XTRA /
O UTDOOR / SECULIFEHIT AM / MD and METRAHIT AM TECH / T ECH only)
➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors.
➭ Make sure that the device under test is voltage-free.
Capacitors must always be discharged before measurement is performed.
Interference voltages distort measurement results!
Refer to chapter 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
➭ Set the rotary switch to “ ”.
➭ Connect the (discharged!) device under test to the sockets with the measurement cables as shown.
Note
The “–” pole of polarized capacitors must be connected to the “
” jack.
Resistors and semiconductor paths connected in parallel to the capacitor distort measurement results!
10 .
38
F
0 V !
!
–
V
Temp COM
–
Measuring Ranges:
10 nF ... 1000
F
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V/Hz,
, Temperature, and A/Hz Measurements
5.7
Current Measurement
Notes Regarding Current Measurement
• The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous currents are otherwise not indicated, and the instrument may be damaged.
• Set up the measuring circuit in a mechanically secure fashion, and secure it against inadvertent breaks. Select conductor cross-sections and lay out connections such that they do not overheat.
• An intermittent acoustic signal warns of current greater than
10 A. An continuous acoustic signal warns of current greater than 16 A.
• The input for the current measuring range is equipped with a fuse link. Maximum permissible voltage for the measuring circuit (= rated voltage of the fuse) is 1000 V AC/DC.
Use specified fuses only! The fuse must have a breaking capacity of at least 30 kA .
• If the fuse for the active current measuring range blows, “ FUSE ” appears at the digital display, and an acoustic signal is generated at the same time.
• If a fuse should blow, eliminate the cause of overload before placing the instrument back into service!
• Fuse replacement is described in chapter 9.3.
• Be absolutely certain that the measuring ranges are not overloaded beyond their allowable capacities. Limit values are included in chapter 8, “Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the “Overload Capacity” column.
Scope of Functions, Current Measurement, Direct Connection
Function
A AC / Hz
A AC+DC TRMS
A DC
1000 V fuse
~
METRA HIT
AM XTRA
XTRA
O UTDOOR
SECULIFEHIT
AM / MD
100
A
1/10/100 mA
1 A / 10 (16)
A
100
A
1/10/100 mA
1A / 10 (16) A
100
A
1/10/100 mA
1A / 10 (16) A
METRAHIT
AM TECH
T ECH
10/100 mA
1 A / 10 (16) A
10/100 mA
1A / 10 (16) A
10/100 mA
1A / 10 (16) A
METRAHIT
AM PRO
P RO
1 A / 10 (16) A
1 A / 10 (16) A
1 A / 10 (16) A
METRAHIT
AM BASE
B ASE
—
—
—
—
Scope of Functions, Current Measurement via Clip-On Current Sensor
Function METRA HIT
AM XTRA
XTRA
O UTDOOR
SECULIFEHIT
AM / MD
METRAHIT
AM TECH
T ECH
METRAHIT
AM PRO
P RO
METRAHIT
AM BASE
B ASE
Transformation
Factor
A AC
A AC+DC
/ Hz
A DC
Hz (A AC)
—
—
—
—
... 30 kHz
... 30 kHz
—
—
—
—
... 30 kHz
... 30 kHz
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V/Hz,
, Temperature, and A/Hz Measurements
5.7.1 Direct and Pulsating Current Measurement, Direct Connection,
A DC and A (DC+AC) (METRAHIT AM X-TRA / AM TECH / AM PRO /
XTRA / O UTDOOR / T ECH / P RO / SECULIFEHIT AM / MD only)
➭ First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors.
➭ In accordance with the current to be measured, turn the rotary switch to A or A .
➭ Select the current type appropriate for the measured quantity by briefly pressing the FUNC | ENTER multifunction key. Each time the key is pressed, the instrument is switched back and forth between A DC and A (DC + AC)
TRMS
, which is indicated by means of an acoustic signal. The current type is indicated at the LCD by means of the DC or the (DC+AC)
TRMS
symbol.
➭
Safely connect the measuring instrument (without contact resistance) in series to the power consumer (2) as shown.
➭ Switch supply power to the measuring circuit back on (3).
➭ Read the display. Make a note of the measured value if the instrument is not being operated in the memory mode or the transmission mode.
➭ Disconnect supply power from the measuring circuit or the power consumer (1) once again, and discharge any capacitors.
➭ Remove the test probes from the measuring point and return the measuring circuit to its normal condition.
A
!
A
Current measurement may only be performed with installed batteries!
8 .
8 .
8 .
8 .
8
Measuring Ranges:
METRA HIT AM PRO / P RO
1 A / 10 A (16 A max. 30 s)
METRA HIT AM TECH / T ECH
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)
SECULIFE HIT
AM / MD
AM XTRA / XTRA / O UTDOOR
100
A / 1 mA
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)
V
Temp
~
1
R x
003 .
50
A
DC
FUNC
ENTER
003 .
50
A
COM mA A
DC
AC
TRMS
A
A
!
I > 10 A
3
2
I > 16 A
~
Current
R x
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V/Hz,
, Temperature, and A/Hz Measurements
5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRAHIT AM X-TRA / AM TECH / AM PRO /
XTRA / O UTDOOR / T ECH / P RO / SECULIFEHIT AM / MD only)
➭ First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors.
➭
In accordance with the current or frequency to be measured, turn the rotary switch to A~ or Hz.
➭ Select the desired measured quantity by briefly pressing the
FUNC | ENTER multifunction key. Each time the key is pressed,
AC
TRMS
and Hz are alternately selected, and switching is acknowledged with an acoustic signal.
➭
Safely connect the measuring instrument (without contact resistance) in series to the power consumer as shown.
➭ Switch supply power to the measuring circuit back on (3).
➭ Read the display. Make a note of the measured value if the instrument is not being operated in the memory mode or the transmission mode.
➭ Disconnect supply power from the measuring circuit or the power consumer (1) once again, and discharge any capacitors.
➭ Remove the test probes from the measuring point and return the measuring circuit to its normal condition.
!
A~
Hz
Current measurement may only be performed with installed batteries!
8 .
8 .
8 .
8 .
8
Measuring Ranges:
METRA HIT AM PRO / P RO
1 A / 10 A (16 A max. 30 s)
METRA HIT AM TECH / T ECH
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)
SECULIFE HIT
AM / MD
AM XTRA / XTRA / O UTDOOR
100
A / 1 mA
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)
~
1
R x
V
Temp
003
3
~
2
R x
.
50
A
FUNC
ENTER
050
Hz
.
10
COM mA A
AC
TRMS
AC
!
I > 10 A
I > 16 A
Current
A~
Hz
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V/Hz,
, Temperature, and A/Hz Measurements
5.7.3 Direct and Pulsating Current Measurement with Clip-On Current Sensor, A DC and A (DC+AC) (METRAHIT AM TECH / T ECH and
METRAHITAM BASE / B ASE only)
Transformer Output, Voltage/Current
When a clip-on current sensor is connected to the multimeter
( METRAHIT AM TECH / T ECH : V input, METRAHITAM BASE / B ASE : V put), all current displays appear with the correct value in accordance with the selected transformation factor. The only prerequisite is that the current sensor is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following menu ( Cl ip 0FF ), see also chapter 6.4.
Current Clip Setup Menu
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
1 / 10 / 100 / 1000 / 0ff
rAtE ... CLIP
FUNC
ENTER
Trans. Factors
CL IP
1:1
1 mV / 1 mA
1:10
1m V / 10 mA
1:100
1m V / 100 mA
1:1000
1 mV / 1 A
Measuring Ranges DMM
100 mV 1 V
100.00 mA
1.0000 A
10.000 A
100.00 A
1.0000 A
10.000 A
100.00 A
1000.0 A
10 V
10.000 A WZ12C
100.00 A
1000.0 A
(10000.0 A)
Clip Types
WZ12B, Z201A/B,
METRAFLEX
Z202A/B,
METRAFLEX
Z202A/B, Z203A/B,
WZ12C,
METRAFLEX
Maximum allowable operating voltage is equal to the current transformer’s nominal voltage. When reading the measured value, additional error resulting from the clip-on current sensor must also be taken into consideration.
42
(default setting: METRAHIT AM TECH / T ECH : OFF , METRAHITAM BASE / B ASE :
1:1000 )
METRA
A
HIT AM BASE
A
B ASE
METRA HIT AM TECH / T ECH
V
V
METRA HIT AM TECH / T ECH
V
Temp COM mA A
~
R i
R x
R i
= 9 M
Current
003
~
003 .
50
A
R x
.
50
A
FUNC
ENTER
R i
1:1000
1:1000
R i
~ 1 M
DC
DC
AC
TRMS
METRA HIT AM BASE / B ASE
V
Temp Hz COM V
Current
A
A
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V/Hz,
, Temperature, and A/Hz Measurements
5.7.4 Alternating Current Measurement with Clip-On Current Sensor
A AC and Hz (METRAHIT AM TECH / T ECH and METRAHITAM BASE /
B ASE only)
Transformer Output, Voltage/Current
When a clip-on current sensor is connected to the multimeter
( METRAHIT AM TECH / T ECH : V input, METRAHITAM BASE / B ASE : V put), all current displays appear with the correct value in accordance with the selected transformation factor. The only prerequisite is that the current sensor is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following menu ( Cl ip 0FF ), see also chapter 6.4.
Current Clip Setup Menu
MEASURE
SETUP
1nFo ... SET
FUNC
ENTER
rAtE ... CLIP
FUNC
ENTER
1 / 10 / 100 / 1000 / 0ff
FUNC
ENTER
Trans. Factors
CL IP
1:1
1 mV / 1 mA
1:10
1m V / 10 mA
1:100
1m V / 100 mA
1:1000
1 mV / 1 A
Measuring Ranges DMM
100 mV 1 V
100.00 mA
1.0000 A
10.000 A
100.00 A
1.0000 A
10.000 A
100.00 A
1000.0 A
10 V
10.000 A WZ12C
100.00 A
1000.0 A
(10000.0 A)
Clip Types
WZ12B, Z201A/B,
METRAFLEX
Z202A/B,
METRAFLEX
Z202A/B, Z203A/B,
WZ12C,
METRAFLEX
Maximum allowable operating voltage is equal to the current transformer’s nominal voltage. When reading the measured value, additional error resulting from the clip-on current sensor must also be taken into consideration.
(default setting: METRAHIT AM TECH / T ECH
: OFF , METRAHITAM BASE / B ASE
:
1:1000 )
METRA HIT AM BASE / B ASE
Hz
R i
= 9 M
METRA
V
Temp
~
R i
R x
A~
V~
METRA HIT AM TECH / T ECH
V~
1M
Hz
R i
= 1 M
HIT AM TECH /
COM mA A
T ECH
1kHz
R i
= 1 M
9 M
Current
METRA
003 .
50
A
1:1000
FUNC
ENTER
050
Hz
.
10
1:1000
HIT AM BASE /
V
Temp Hz
~
R x
COM
R i
V
B
AC
TRMS
AC
ASE
R i
~ 1 M
Current
A~
Hz
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V/Hz,
, Temperature, and A/Hz Measurements
5.7.5 Direct, Pulsating and Current Measurement with Clip-On Current
Transformer A DC, A (DC+AC), A AC and Hz (METRAHIT AM TECH /
T ECH only)
Transformer Output, Current/Current
When a clip-on current transformer is connected to the multimeter
( METRAHIT AM TECH / T ECH : mA/A input), all current displays appear with the correct value in accordance with the selected transformation factor. The only prerequisite is that the current transformer is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following menu ( Cl ip 0FF ), see also chapter 6.4.
Current Clip Setup Menu
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
1 / 10 / 100 / 1000 / 0ff
rAtE ... CLIP
FUNC
ENTER
Trans. Factors
CL IP
1:1
1mA/1mA
1:10
1mA/10mA
1:100
1mA/100mA
1:1000
1 mA/1 A
Measuring Ranges DMM
100 mA 1 A
100,00 mA 1,0000 A
1,0000 A
10,000 A
100,00 A
10,000 A
100,00 A
1000,0 A
Clip Types
10 A
10,000 A
100,00 A
1000,0 A
(10000,0 A)
WZ12A, WZ12D,
WZ11A, Z3511,
Z3512, Z3514
(default setting: METRAHIT AM TECH / T ECH : OFF )
44
A~ A
Hz
A
003 .
50
A
1:1000
DC
FUNC
ENTER
A 003 .
50
A
AC
TRMS
A~
FUNC
ENTER
003 .
50
A
1:1000
AC
TRMS
DC A
050
Hz
.
10
METRA HIT AM TECH / T ECH
AC
V
Temp COM mA A
Hz
R i
R i
1
~
R x
Current
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Device and Measuring Parameters
6 Device and Measuring Parameters
The instrument’s “ SET ” mode (menu mode) makes it possible to set operating and measuring parameters, query information and activate the interface.
➭ The menu mode is accessed by pressing the MEASURE | SETUP key, assuming that the instrument is switched on and set to
“Measure” (measuring mode operation).
“ 1nFo ” appears at the display.
➭ The main menus, i.e. the “ SET ” and “ tEMP ” menus, as well as the “ SEnd ” and “ StorE ” menus included with the METRAHIT
AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD , are accessed, and the display is returned to “ 1nFo ” by activating the keys
(in any direction).
➭ After selecting the desired main menu, sub-menus are accessed by pressing the FUNC | ENTER key.
➭ The desired parameter is selected by repeatedly pressing the
or key.
➭ In order to check or change a parameter, acknowledge it with the FUNC | ENTER key.
➭
The keys can be used to position the cursor at the entry position.
The desired value is selected with the help of the keys.
➭
Changes can only be accepted with the FUNC | ENTER key.
➭ You can return to the sub-menu without making any changes by pushing the ZERO | ESC key, and to the main menu by pressing the same key once again etc.
➭ You can switch to the measuring mode from any menu level by pressing the FUNC | ENTER key.
After repeatedly pressing the MEASURE | SETUP key (without first turning the multimeter off), you can return to the last selected menu or parameter from the measuring mode.
Example: Setting Time
MEASURE
SETUP
1nFo ... set
FUNC
ENTER rAte ... t iME
FUNC
ENTER
10 : 24 (hh:mm)
FUNC
ENTER
Setting hours and minutes:
FUNC
ENTER
Advance to desired entry position.
Change the setting, the entry position blinks.
Press and hold the key to change the setting rapidly.
The new time setting is activated after acknowledgement.
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6.1
Paths to the Various Parameters
020 .
00
V
FUNC
ENTER
FUNC
ENTER
GMC-I Messtechnik GmbH
DC
AC
TRMS
Main Menus
1nFo StorE
*
Sub-Menus / Parameters
Query bAtt
:
Set
000
.
0
VerSion :
1tEMP
:
CLEAr
StArt /
StoP dAtE : t iME
:
0CCvP
: *
Selection
FUNC
ENTER
MEASURE
SETUP
SEnd
*
FUNC
ENTER
Set
StArt
StoP
Selection
FUNC
ENTER
* METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD only
** METRAHITAM BASE / B ASE only
1nfo
SET
FUNC
ENTER tEMP
FUNC
ENTER
Set rAtE
*
0 .
diSP
A
.
diSP
APoFF bEEP irStb *
Addr
* dAtE tiME
CLiP **
Selection
FUNC
ENTER
Set
C
F
Selection
FUNC
ENTER
Device and Measuring Parameters
6.2
List of All Parameters
Parameter AM
XTRA
AM
TECH
AM
PRO
AM
BASE
Page: Header
X TRA T ECH P RO B ASE
0 .
diSP
48: 0.diSP – show/hide leading zeros
Addr
— — — 53: Configuring Interface Parameters
A
.
diSP
49: A.diSP – analog display: select display mode
APoFF bAtt bEEP
49: APoFF – specified time for automatic shutdown and continuous ON
48: bAtt – query battery voltage
49: bEEP – set the limit value for continuity testing
CLEAr
— — —
23: Measurement Data Recording ( METRAHIT
AM XTRA / XTRA / O UTDOOR and SECULIFEHIT AM /
MD only)
CLIP
—
—
42: Direct and Pulsating Current Measurement with
Clip-On Current Sensor, A DC and A (DC+AC)
( METRAHIT AM TECH / T ECH AND METRAHITAM BASE
/ B ASE ONLY )
48: dAtE – query date, 50: dAtE – enter date dAtE
EMpty
1nfo
— — —
23: Measurement Data Recording ( METRAHIT
AM XTRA / XTRA / O UTDOOR and SECULIFEHIT AM /
MD only)
48: Querying Parameters – InFo Menu (as moving letters) irStb
— — — 53: Configuring Interface Parameters
1tEMP
48: ItEMP – query reference temperature
0CCvP
— — —
23: Measurement Data Recording ( METRAHIT AM XTRA / X-
TRA / O UTDOOR and SECULIFEHIT AM / MD only) rAtE
SEnd
SET
— — —
48: rAtE – set the sampling rate (AM XTRA / XTRA / O UT -
DOOR / HIT AM / MD only)
— — — 52: Activating the Interface
48: Entering Parameters – SETUP Menu
StArt
StoP
— — — 23: Measurement Data Recording (
METRAHIT
— — — AM XTRA / XTRA / O UTDOOR and SECULIFEHIT AM / store tEMP
— — — MD only)
36: Temperature Measurement t iME 48: tiME – query time, 50: tiME – set time vErSion 48: vErSion – query firmware version
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Device and Measuring Parameters
6.3
Querying Parameters – InFo Menu (as moving letters) 6.4
Entering Parameters – SETUP Menu bAtt – query battery voltage
MEASURE
SETUP vErSion – query firmware version
MEASURE
SETUP
1nFo
1nFo
FUNC
ENTER
FUNC
ENTER bAtt bAtt
:
:
2
ItEMP – query reference temperature
.
75 V.
vErSion : 2 .
09
The temperature of the internal reference junction is measured with a temperature sensor in close proximity to the input sockets.
MEASURE
1nFo bAtt : ... 1tEMP : 24 °C
SETUP
FUNC
ENTER dAtE – query date
MEASURE
1nFo
FUNC bAtt :
...
dAtE : 31 .
12 .
05 (DD.MM.YY)
SETUP ENTER
D = day, M = month, Y = year
Date and time must be reentered after replacing the batteries.
rAtE – set the sampling rate (AM XTRA / XTRA / O UTDOOR / HIT AM / MD only)
The sampling rate specifies the time interval after which the respective measured value is transmitted to the interface, or to measured value memory.
Any one of the following sampling rates can be selected:
00:00.1, 00:00.2, 00:00.5
, 00:01.0, 00:02.0, 00:05.0
[h:mm:ss.t] (h = hours, m = minutes, s = sec., t = tenths of a sec.)
0:00:10, 0:00:20, 0:00:30, 0:00:40, 0:00:50, 0:01:00, 0:02:00,
0:05:00, 0:10:00, 0:20:00, 0:30:00, 0:40:00, 0:50:00, 1:00:00,
2:00:00, 3:00:00, 4:00:00, 5:00:00, 6:00:00, 7:00:00, 8:00:00,
9:00:00
Setting the Sampling Rate
MEASURE
1nFo
...
SET
SETUP
FUNC
ENTER rAtE
FUNC
ENTER
00
:
00
.
1
...
00
:
00
.
5
...
9
:
00
:
00
FUNC
ENTER
(00:00.5 = 0.5 seconds = default value) tiME – query time
MEASURE
SETUP
1nFo
(hh:mm:ss)
FUNC
ENTER bAtt :
...
t iME : 13 : 46 : 56 h = hours, m = minutes, s = seconds
Date and time must be reentered after replacing the batteries.
0.diSP – show/hide leading zeros
This parameter determines whether or not leading zeros will appear in the measured value display.
OCCUP only)
–
MEASURE
SETUP
query memory occupancy (AM XTRA / X-
1nFo
FUNC
ENTER bAtt :
...
TRA
0CCUP :
/ O UTDOOR
000 .
0 %
/ HIT AM / MD
MEASURE
SETUP
1nFo
...
SET
FUNC
ENTER rAtE
0000 .
0 :
0 .
0 :
...
0
.
diSP
FUNC
ENTER
FUNC
ENTER
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Device and Measuring Parameters
A.diSP – analog display: select display mode
One of two different display modes can be selected for the analog display:
• bArG : bar graph
• Point : pointer
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET bArG / Point
FUNC
ENTER
FUNC
ENTER rAtE ... A .
diSP
( bArG = default value) bEEP – set the limit value for continuity testing
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
1 , 10 , 20 , 30 , 40 , 90 rAtE ... bEEP
FUNC
ENTER
(10
= default setting) irStb – status of the infrared receiver in the stand-by mode (METRAHIT
AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only)
APoFF – specified time for automatic shutdown and continuous ON
The instrument is switched off automatically if the measured value remains unchanged for a long period of time, and if none of the keys or the rotary switch have been activated before the specified time “ APoFF ” (entered in minutes) has elapsed.
If the on setting is selected, the multimeter is set to continuous operation and ON appears in the display to the right of the battery symbol. In this case, the multimeter can only be switched off manually. The “ on ” setting can only be cancelled by changing the respective parameter, and not by switching the instrument off.
See chapter 7.2 on page 53 regarding settings.
Addr – select device address (METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD only
See chapter 7.2 on page 53.
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
10 ... 59 min on
FUNC
ENTER
FUNC
ENTER rAtE ... APoFF
(10 minutes = default setting)
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Device and Measuring Parameters dAtE – enter date
Entering the current date makes it possible to acquire measured values in real-time.
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER rAtE ...
31 .
12 (DD: day . MM: month) dAtE
FUNC
ENTER
2005 (YYYY: year)
FUNC
ENTER
Date and time must be reentered after replacing the batteries.
tiME – set time
Entering the correct time makes it possible to acquire measured values in real-time.
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
FUNC
ENTER
10 : 24 (hh:mm) rAtE
FUNC
ENTER
... t iME
Date and time must be reentered after replacing the batteries.
CLIP – set transformation factor (METRAHIT AM TECH / T ECH and
METRAHITAM BASE / B ASE only)
See chapter 5.7.3 ff.
6.5
Default Settings
Previously entered changes can be undone, and the default settings can be reactivated. This may be advisable under the following circumstances:
• After the occurrence of software or hardware errors
• If you are under the impression that the multimeter does not work correctly
➭ Disconnect the device from the measuring circuit.
➭ Remove the batteries temporarily (see also chapter 9.2).
➭ Simultaneously press and hold the
ESC LIGHT keys, and reinsert the batteries at the same time.
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Interface Operation
7 Interface Operation ( METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD only)
The METRAHIT AM XTRA / XTRA / O UTDOOR is equipped with an infrared interface for the transmission of measurement data to a PC.
Measured data are optically transferred through the instrument housing by means of infrared light to an interface adapter (accessory), which is attached to the multimeter. The adapter’s USB interface allows for the establishment of a connection to the PC via an interface cable.
Beyond this, commands and parameters can be transmitted from the PC to the multimeter as well. The following functions can be executed:
• Configuration and read-out of measuring parameters
• Measuring function and measuring range selection
• Start measurements
• Read out stored measured values
Starting Continuous Transmission Operation with Menu Functions
MEASURE
SETUP
1nFo ... SEnd
FUNC
ENTER
StArt
FUNC
ENTER send
The symbol blinks at the display in order to indicate interface operation.
Stopping Continuous Transmission Operation with Menu Functions
MEASURE
SETUP
FUNC
ENTER
1nFo ... SEnd stop
FUNC
ENTER
FUNC
ENTER send send
The symbol is cleared from the display.
7.1
Activating the Interface
The interface is automatically activated for receiving operation
(multimeter receives data from the PC) as soon as the interface is addressed by the PC, assuming that the “ irStb ” parameter has been set to “ ir on ” (see chapter 7.2), or the instrument is already switched on (the first command wakes up the multimeter, but does not yet execute any further commands).
The “continuous transmission” operating mode is selected manually as described below. In this operating mode, the instrument continuously transmits measurement data to the PC via the interface adapter, which can then be displayed with the help of a terminal program.
Automatic Activation and Deactivation of Transmission Mode Operation
If the sampling rate is 10 seconds or longer, the display is switched off automatically between samples in order to prolong battery service life. The only exception is when the multimeter is set to continuous operation.
As soon as an event occurs, the display is automatically switched back on.
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7.2
Configuring Interface Parameters irStb – status of the infrared receiver in the stand-by mode
There are two possible switching statuses for the infrared interface when the multimeter is switched off: ir on : ir oFF :
IR appears at the display and the infrared interface is active, i.e. signals such as making commands can be received, and power is consumed even though the multimeter is switched off.
IR does not appear at the display and the infrared interface is switched off, signals cannot be received.
Interface Operation
Addr – Address
If several multimeters are connected to the PC via an interface adapter, a separate address can be assigned to each instrument.
Address number 1 should be selected for the first instrument, 2 should be assigned to the second and so forth.
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
00 ... 01 ... 15
FUNC
ENTER
FUNC
ENTER
rAtE ... Addr
(15 = default setting)
MEASURE
SETUP
FUNC
ENTER
1nFo ... SET
ir on / ir oFF
FUNC
ENTER
FUNC
ENTER
rAtE ... irStb
( irstb = ir oFF = default setting)
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Technical Data
8 Technical Data
Meas.
Function
V
A
AM XTRA
XTRA
O UTDOOR
AM PRO
P RO
A
AM TECH
T
ECH
Measuring Range
Resolution at Upper
Range Limit
11,999
100 mV 10
V
1 V 100
V
10 V 1 mV
100 V 10 mV
1000 V 100 mV
100
A 10 nA
1 mA 100 nA
10 mA 1
A
100 mA 10
A
1 A 100
A
10 A
10 mA
1 mA
1
A
100 mA 10
A
1 A 100
A
10 A 1 mA
1199
Input Impedance
9 M
9 M
9 M
9 M
9 M
Intrinsic Errorunder Reference Conditions
(... % rdg. + ... d)
(... % rdg. + ... d)
(... % rdg. + ... d)
~
/
9 M
// < 50 pF 0.09 + 5 with ZERO
9 M
// < 50 pF 0.05 + 3
9 M
// < 50 pF
9 M
// < 50 pF
9 M
// < 50 pF
0.05 + 3
0.05 + 3
0.09 + 3
Voltage drop, approx. at upper range limit
~
~
4)
4)
1 + 30 (> 300 d)
1)
0.5 + 9 (> 200 d)
0.5 + 9 (> 200 d)
0.5 + 9 (> 200 d)
0.5 + 9 (> 200 d)
4)
1 + 30 (> 300 d)
1)
1 + 30 (> 300 d)
1 + 30 (> 300 d)
1 + 30 (> 300 d)
1 + 30 (> 300 d)
4)
12 mV
120 mV
16 mV
160 mV
40 mV
600 mV
16 mV
160 mV
40 mV
600 mV
12 mV
120 mV
16 mV
160 mV
40 mV
600 mV
16 mV
160 mV
40 mV
600 mV
0.5 + 5
0.5 + 3
0.5 + 3
0.5 + 3
0.9 + 10
0.9 + 10
0.1 + 5
0.1 + 5
0.9 + 10
0.9 + 10
1.5 + 10 (> 200 d)
1.5 + 10 (> 200 d)
1.5 + 10 (> 200 d)
1.5 + 10 (> 200 d)
1.5 + 10 (> 200 d)
1.5 + 10 (> 200 d)
1 + 10 (> 200 d)
1 + 10 (> 200 d)
1 + 10 (> 200 d)
1 + 10 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
1.5 + 30 (> 200 d)
Input impedance
A
AM TECH
T ECH
A
AM TECH
T
ECH
AM BASE
B
ASE
Factor: 1:1/10/100/1000 Input
0.1/1/10/100 A 100 mA
1/10/100/1000 A 1 A
10/100/1000/10000 A 10 A
0.1/1/10/100 A 100 mV
1/10/100/1000 A 1 V
10/100/1000/10000 A 10 V
Current measuring input
( A socket)
Voltage measurement input
T
ECH
: (V socket) Ri =1 M
/9 M
B ASE : ( V socket) Ri ~1 M
Specification see current ranges A (T
ECH
)
plus clip-on current sensor error
(0.5% rdg. + 10 d)
(1% rdg. + 30 d)
> 300 d
(1% rdg. + 30 d)
> 300 d
Plus clip-on current sensor error
100
1 k
10 k
100 k
1 M
10 M
40 M
100
5.1 V
3)
10 m
100 m
1
10
100
1 k
10 k
—
—
Open-circuit voltage Meas. curr. @ range limit
< 1.4
< 1.4
< 1.4
< 1.4
< 1.4
V
V
V
V
V
Approx. 300
A
Approx. 250
A
Approx. 100
A
Approx. 12
A
Approx. 1.2
A
< 1.4
V Approx. 125 nA
Approx. 20 nA < 1.4
V
0.1
Approx. 8 V
1 mV Approx. 8 V
Approx. 1 mA const.
Approx. 1 mA const.
(... % rdg. + ... d)
0.2 + 5 with active ZERO function
0.2 + 5
0.2 + 5
0.2 + 5
0.2 + 5
0.5 + 10
2.0 + 10
3 + 5
0.5 + 3
1)
2)
3)
Values of less than 200 digits are suppressed in the mV range.
At 0
... + 40
C
Display up to max. 5.1 V, “OL” in excess of 5.1 V.
Overload Capacity
2)
Value
1000 V
DC
AC
RMS sine
0.2 A
10 A:
5 min
16 A:
30 s
5)
5)
0.2 A
10 A:
5 min
16 A:
30 s
5)
5)
Measuring input
0.2 A continuous
10 A: 5 min
Measurement input
1000 V
DC
AC
RMS sine
Time continuous continuous continuous
1000 V RMS Max. 10 s
Max. 10 s
4)
5)
Residual value deviates within 1 ... 30 d from the zero point due to TRMS converter when probe tips are short-circuited. See frequency influence on page 56.
Switch-off time/Cool-down time > 30 min and T
A
40
C
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Technical Data
Hz (V)
Hz (A)
Hz (A )
Hz (V)
Hz (A)
MHz
AM XTRA
X-
TRA
O UTDOOR
%
AM XTRA
XTRA
O UTDOOR
Meas.
Function
Measuring Range
Resolution at Upper
Range Limit
11,999 1199
F
AM XTRA
X-
TRA
O UTDOOR
AM TECH
T
ECH
10 nF
100 nF
1 F
10
F
100
F
1000
F
10 pF
100 pF
1 nF
10 nF
100 nF
1
F
Input impedance
Discharge resistance
10 M
1 M
100 k
12 k
3 k
3 k
~
/
U
0 max
0.7
V
0.7
V
0.7
V
0.7
V
0.7
V
0.7
V f min
7)
100.00
Hz
1.0000 kHz
10.000 kHz
100.00 kHz
30.00 kHz
100 Hz ... 1 MHz
2.0 ... 98%
5.0 ... 95%
10... 90%
0.01 Hz
0.1 Hz
1 Hz
10 Hz
10 Hz
0.01 ...
100 Hz
—
—
—
0.01% 100 Hz ... 1 kHz
0.01% ... 10 kHz
0.01% ... 100 kHz
1 Hz
10 Hz
10 Hz
1 ... 100 Hz
1 Hz
1 Hz
1 Hz
C/
F
Pt100
XTRA
O UTD .
Pt1000
XTRA
O UTD .
– 200.0 ...
+850.0
C
– 150.0 ...
+850.0
C
K
(NiCr-Ni)
– 250.0 ...
+1372.0
C
0.1
C
2)
6)
7)
8)
At 0
... + 40
C
Applies to measurements at film capacitors
Lowest measurable frequency for sinusoidal measuring signals symmetrical to the zero point
Overload capacity of the voltage measurement input: power limiting: frequency x voltage, max. 3 x 10
6
V x Hz for U > 100 V
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Intrinsic Error under Reference Conditions
(... % rdg. + ... d)
1 + 6
6) with ZERO function active
1 + 6
6)
1 + 6
6)
1 + 6
6)
5 + 6
6)
5 + 6
6)
(... % rdg. + ... d)
0.05 + 3
10)
0.05 + 3 > 2 V ... 5 V
Overload Capacity
2)
Value Time
1000 V
DC
AC
RMS
Sine
Max. 10 s
Hz (V)
8)
Hz(A )
:
8)
:
1000 V
Max. 10 s
Hz (A):
9)
1000 V Max. 10 s
0.1 R per kHz
0.1 R per kHz
> 2 V ... 5 V
> 2 V ... 5 V
0.1 R per kHz > 2 V ... 5 V
(... % rdg. + ... d)
0.3 + 15
11)
0.3 + 15
11)
1000 V
DC/AC
RMS
Sine
Max. 10 s
1% + 5 K
11)
9)
Overload capacity of the current measurement input:
10)
See current measuring ranges for maximum current values.
Input sensitivity, sinusoidal signal, 10% to 100% of the measuring range
11)
Plus sensor deviation
Key : R = meas. range, d = digit(s), rdg. = measured value (reading)
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Technical Data
Influencing Quantities and Influence Error
Influencing
Quantity
Sphere of
Influence
Measured Quantity /
Measuring Range
1)
Temperature
0
C ... +21
C and
+25
C
... +40
C
V
V
100
... 1 M
> 1 M
mA/A mA/A
10 nF ... 100
F
Hz
C/
F (Pt100/Pt1000)
C/
F thermocouple K
1)
With zero balancing
Influencing
Quantity
DATA
MIN / MAX
Measuring Quantity
V
A,
, Hz
V
A,
, Hz
Influence Error
(...% rdg. + ... d)
10 d
30 d
Influence Error
(...% rdg. + ... d) / 10 K
0.2 + 10
0.4 + 10
0.5 + 10
1 + 10
0.5 + 10
0.8 + 10
1 + 5
0.2 + 10
0.5 + 10
0.2 + 10
Influencing
Quantity
Meas. Quantity/
Meauring
Range
Sphere of Influence
Intrinsic Error
3)
... % rdg. + ... d)
METRAHIT AM XTRA
METRAHIT X-
TRA
METRAHIT O UTDOOR
METRA HIT AM TECH
METRAHIT T ECH
METRAHIT AM PRO
METRAHIT P RO
SECULIFEHIT
AM
/
MD
3 + 30
METRAHITAM BASE
METRAHIT B
3 + 30
ASE
2 + 30
3 + 30
3 + 30
—
100.00 mV
> 15 Hz ... 45 Hz
> 65 Hz ...
1 kHz
> 1 kHz ... 10 kHz
V
AC
1.0000 V
...
100.00 V
> 15 Hz ... 45 Hz
> 65 Hz ...
1 kHz
> 1kHz...10/20kHz
4)
> 15 Hz ... 45 Hz
2 + 9
1 + 9
3 + 9
2 + 9
3 + 9
3 + 9
—
3 + 9
Frequency
1000.0 V
2)
> 65 Hz ...
1 kHz
> 1 kHz ... 10 kHz
2 + 9
3 + 30
3 + 9
—
A
AC
100.00
A
...
10.0000 A
> 15 Hz ... 45 Hz
> 65 Hz ... 10 kHz
3 + 10 —
A
AC
100 mV /
1 V / 10 V
> 65 Hz ... 1 kHz — 3 + 10
2)
3)
4)
Power limiting: frequency x voltage max. 3 x 10
6
V x Hz for U > 100 V
The accuracy specification for frequency response is valid within a display value range of 10% to 100% of the measuring range for both measuring modes with the TRMS converter in the AC and (AC+DC) ranges.
METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD :
METRA HIT AM TECH / T ECH :
Frequency response up to 20 kHz,
Frequency response up to 10 kHz,
METRAHIT AM PRO / P RO :
METRAHIT AM BASE / B ASE :
Frequency response up to 10 kHz,
Frequency response up to 1 kHz
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Influencing
Quantity
Sphere of
Influence
Measured Quantity /
Measuring Range
1 ... 3
Crest factor CF
> 3 ... 5
5)
Except for sinusoidal waveshape
V , A
Influencing Qty.
Sphere of Infl.
75%
Relative humidity
3 days instrument off
Measured Quantity
V
A,
, Hz,
C
Influence Error
5)
1 % rdg.
3 % rdg.
Influence Error
1 x intrinsic error
Influencing
Quantity
Common Mode
Interference
Voltage
Series Mode
Interference
Voltage
Sphere of Influence
Interference quantity max. 1000 V
Interference quantity max. 1000 V
50 Hz ... 60 Hz, sine
Measured Quantity /
Measuring Range
V
1 V , 10 V
100 V
1000 V
Interference quantity: V ,, respective nominal value of the meas. range, max. 1000 V , 50 Hz ... 60 Hz, sine
Interference quantity max. 1000 V
V
V
Damping
> 120 dB
> 80 dB
> 70 dB
> 60 dB
> 50 dB
> 110 dB
Technical Data
Reference Conditions
Ambient temperature
Relative humidity
+23
C
2 K
40 ... 75%
Measured qty. frequency 45 ... 65 Hz
Measured qty. waveshape sine
Battery voltage 3 V
0.1 V
Response Time
(after manual range selection)
Measured Quantity /
Measuring Range
Response Time
Digital Display
Measured Quantity Jump Function
1.5 s
From 0 to 80% of upper range limit value
V , V
AV , A
100
... 1 M
10/40 M
Continuity
C (Pt100)
10 nF ... 100
F
1 000
F
>10 Hz
2 s
5 s
< 50 ms max. 3 s
1.5 s max. 2 s max. 7 s
1.5 s
From to 50% of upper range limit value
From 0 to 50% of upper range limit value
Internal Clock
Time format
Resolution
Accuracy
Temperature influence
TT.MM.JJJJ hh:mm:ss
0.1 s
1 minute per month
50 ppm/K
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Technical Data
Data Interface
(METRAHIT AM XTRA / X-
TRA
/ O
UTDOOR
/ SECULIFEHIT
AM
/
MD
only)
Type Optical via infrared light through the housing
Data transmission
(data transfer)
Protocol
Baud Rate
Functions
Serial, bidirectional (not IrDa compatible)
Device specific
38,400 baud
– Select/query measuring functions and parameters
– Query/transmit momentary measurement data
– Read out stored measurement data
The USB X-TRA plug-in interface adapter (see accessories) is used for adaptation to the PC’s USB port.
Internal Measured Value Storage
(METRAHIT AM XTRA / XTRA / O UTDOOR and SECULIFEHIT AM / MD only)
Memory capacity 4 MBit / 540 kB for approx. 15,400 measured values with time stamp
Power Supply
Battery
Service life
2 ea. 1.5 V mignon cell (2 ea. size AA), alkaline manganese per IEC LR6
(2 ea. 1.2 V NiMH rechargeable battery also possible)
With alkaline manganese: approx. 200 hours
Battery test Battery capacity display with battery symbol in 4 segments: .
Querying of momentary battery voltage via menu function.
Power OFF function The multimeter is switched off automatically:
– If battery voltage drops to below approx.
1.8 V
– If none of the keys or the rotary switch are activated for an adjustable duration
(10 to 59 min.), and the multimeter is not in the continuous operating mode
Power pack connector socket
( METRAHIT AM XTRA / XTRA / O UTDOOR / SECULIFEHIT AM / MD only)
If the NA X-TRA power pack (see accessories) has been plugged into the instrument, the batteries are disconnected automatically.
Rechargeable batteries can only be recharged externally.
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Technical Data
Display
LCD panel (65 mm x 36 mm) with analog and digital display including unit of measure, type of current and various special functions
Acoustic Signals
For voltage
For current
Intermittent signal at above 1000 V
Intermittent signal at above 10 A
Continuous signal at above 16 A
Background illumination
Background illumination is switched off approximately 1 minute after it has been activated.
Analog
Display
Scaling
Polarity display
Overflow display
Measuring rate
LCD scale with bar graph or pointer, depending upon A .
diSP parameter setting
With 4 division lines each
1 bar/pointer corresponds to 500 digits at the digital display
With automatic switching
With the symbol
40 per second and display refresh
(U and I)
Fuse for METRAHIT AM X-TRA / AM TECH / AM PRO
METRAHIT X-
TRA
/ O
UTDOOR
/ T
ECH
/ P
RO / SECULIFEHIT AM / MD
Fuse FF (UR) 10 A/1000 V AC/DC,
10 x 38 mm, switching capacity:
30 kA at 1000 V AC/DC, protects the current input socket in the
100
A to 10 A ranges
Electrical Safety per IEC 61010-1:2010/DIN EN 61010-1:2011/VDE 0411-1:2011
Safety class
Fouling factor
Test voltage
II
2
6.7 kV~
Digital
Display / Char. Height 7-segment characters / 15 mm
Number of places
Overflow display
4½ place 11,999 steps
“ 0L ” is displayed for
12,000 digits
Polarity display
Measuring rate
Refresh Rate
“–” (minus sign) is displayed if plus pole is connected to “
”
10 measurements per second;
40 per second with Min/Max function except with capacitance, frequency and duty cycle measuring functions
2 times per sec., every 500 ms
GMC-I Messtechnik GmbH
METRAHIT AM X-TRA / AM TECH / AM PRO / AM BASE
METRAHIT XTRA / O UTDOOR / T ECH / P RO / B ASE
Measuring category III
Operating voltage 1000 V
IV
600 V
SECULIFEHIT AM / MD
Measuring category III
Operating voltage 600 V
IV
300 V
59
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Technical Data
Electromagnetic Compatibility (EMC)
Interference emission EN 61326-1:2013, class B
Interference immunity EN 61326-1:2013
EN 61326-2-1:2013
Ambient Conditions
Operating temp. range T
A
Storage temp. range
Relative humidity
Elevation
Deployment
10
C ... +50
C
25
C ... +70
C (without batteries)
Max.75%, no condensation allowed,
METRAHIT O UTDOOR & SECULIFEHIT AM / MD only: max. 96 % to 2000 m
Indoors; outdoors only within specified ambient conditions
Mechanical Design
Housing
Dimensions
Weight
Protection
Impact resistant plastic (ABS)
200 x 87 x 45 mm
(without protective rubber cover)
Approx. 0.35 kg with batteries
Housing: IP 52
Extension of the METRAHIT O UTDOOR &
SECULIFEHIT AM / MD :
Housing: IP 65
Table Excerpt Regarding Significance of the IP Code
IP XY
(1st digit X)
5
6
Protection against penetration of solid particles
Dust protected
Dust-proof
IP XY
(2nd digit Y)
2
5
Protection against penetration by water
Dripping (15
inclination)
Jet-water
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Maintenance – Calibration
9 Maintenance and Calibration
!
Attention!
Disconnect the instrument from the measuring circuit before opening the battery compartment lid or fuse cover in order to replace batteries or fuses!
ware before replacing the batteries.
The selected operating parameters remain in memory, although date and time must be reentered.
9.1
Displays – Error Messages
Message Function
FUSE
Meaning
Current measurement Blown fuse
In all operating modes Battery voltage has fallen below 1.8 V
0L Measurement Indicates overflow
Battery
The current battery charge level can be queried in the “ 1nfo ” menu:
MEASURE
SETUP
1nFo
FUNC
ENTER bAtt : 2 .
75 V.
9.2
Batteries
Note
Removing the Batteries During Periods of Non-Use
The integrated quartz movement draws power from the batteries even when the instrument is switched off. It is advisable to remove the batteries during long periods of non-use for this reason (e.g. vacation). This prevents excessive depletion of the battery, which may result in damage under unfavorable conditions.
Note
Battery Replacement for METRAHIT AM XTRA / XTRA / O UTDOOR /
SECULIFEHIT AM / MD
Stored measurement data are lost when the batteries are replaced. In order to prevent data loss, it is advisable to backup your data to a PC with the help of METRAwin 10 soft-
Make sure that no battery leakage has occurred before initial start-up, as well as after long periods of storage. Continue to inspect the batteries for leakage at short, regular intervals.
If battery leakage has occurred, carefully and completely clean the electrolyte from the instrument with a damp cloth, and replace the batteries before using the instrument.
If the “ ” symbol appears at the display, the batteries should be replaced as soon as possible. You can continue working with the instrument, but reduced measuring accuracy may result.
The instrument requires two 1.5 V batteries in accordance with
IEC R 6 or IEC LR 6, or two equivalent rechargeable NiCd batteries.
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Maintenance – Calibration
Replacing the Batteries
!
Attention!
Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries.
➭ Set the instrument face down onto the working surface.
➭ Turn the slotted screw on the lid with the battery symbols counterclockwise.
➭ Lift off the lid and remove the batteries from the battery compartment.
➭ Insert two new 1.5 V mignon batteries into the battery compartment, making sure that the plus and minus poles match up with the provided polarity symbols.
➭ When replacing the battery compartment lid, insert the side with the guide hooks first.
Tighten the screw by turning it clockwise.
➭ Please dispose of depleted batteries in accordance with environmental protection regulations!
9.3
Fuse (METRAHIT AM XTRA / XTRA / O UTDOOR , METRAHIT AM TECH /
T ECH , METRAHIT AM PRO / P RO and SECULIFEHIT AM / MD only)
Testing the Fuse
The fuse is tested automatically:
• When the instrument is switched on with the rotary switch in the A position
• When the instrument is already on and the rotary switch is turned to the A position
• In the active current measuring range when voltage is applied
If the fuse is blown or has not been inserted, “FuSE” appears at the digital display. The fuse interrupts the current measuring ranges. All other measuring ranges remain functional.
fuse
A
DC
Replacing the Fuse
If a fuse should blow, eliminate the cause of overload before placing the instrument back into service!
!
Blown Fuse
Attention!
Disconnect the instrument from the measuring circuit before opening the fuse cover in order to replace the fuse!
➭ Set the instrument face down onto the working surface.
➭ Turn the slotted screw on the cover with the fuse symbol counterclockwise.
➭ Lift off the cover and pry the fuse out using the flat side of the fuse cover.
➭ Insert a new fuse. Make sure that the fuse is centered, i.e. between the tabs at the sides.
➭ When replacing the fuse cover, insert the side with the guide hooks first.
Tighten the screw by turning it clockwise.
➭ Dispose of the blown fuse with the trash.
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Maintenance – Calibration
!
Attention!
Use specified fuses only!
If fuses with other blowing characteristics, other current ratings or other breaking capacities are used, the operator is placed in danger, and protective diodes, resistors and other components may be damaged.
The use of repaired fuses or short-circuiting the fuse holder is prohibited.
Note
Testing the Fuse with the Instrument Switched On
After inserting the fuse with the instrument switched on, the instrument must be switched off briefly and then switched back on, or briefly switched to a non-current measuring range and then back to the “A” measuring range.
If contact is poor or the fuse is blown, FUSE appears at the display.
9.4
Housing Maintenance
No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives or solvents.
9.5
Return and Environmentally Sound Disposal
The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG: German electrical and electronic device law). This device is subject to the RoHS directive. Furthermore, we make reference to the fact that the current status in this regard can be accessed on the Internet at y entering the search term WEEE.
We identify our electrical and electronic devices in accordance with WEEE 2012/19/EU and ElektroG with the symbol shown at the right per DIN EN 50419.
These devices may not be disposed of with the trash.
If you use batteries or rechargeable batteries in your instrument or accessories which no longer function properly, they must be duly disposed of in compliance with the applicable national regulations.
Batteries or rechargeable batteries may contain harmful substances or heavy metal such as lead (PB), cadmium (CD) or mercury (Hg).
They symbol shown to the right indicates that batteries or rechargeable batteries may not be disposed of with the trash, but must be delivered to collection points specially provided for this purpose.
Pb Cd Hg
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Maintenance – Calibration
9.6
Recalibration
The respective measuring task and the stress to which your measuring instrument is subjected affect the ageing of the components and may result in deviations from the guaranteed accuracy.
If high measuring accuracy is required and the instrument is frequently used in field applications, combined with transport stress and great temperature fluctuations, we recommend a relatively short calibration interval of 1 year. If your measuring instrument is mainly used in the laboratory and indoors without being exposed to any major climatic or mechanical stress, a calibration interval of
2-3 years is usually sufficient.
9.7
Manufacturer’s Guarantee
All METRA HIT digital multimeters and calibration instruments are guaranteed for a period of 3 years after date of shipment. The manufacturer’s guarantee covers materials and workmanship.
Damages resulting from use for any other than the intended purpose or operating errors, as well as any and all consequential damages, are excluded.
The calibration certificate confirms that the product conformed to the specified technical data at the time of calibration. We guarantee the observance of the specified technical data within the admissible tolerance limits for a period of 12 months from delivery.
During recalibration* in an accredited calibration laboratory
(DIN EN ISO/IEC 17025) the deviations of your instrument in relation to traceable standards are measured and documented. The deviations determined in the process are used for correction of the readings during subsequent application.
By having your measuring instrument calibrated regularly, you fulfill the requirements of a quality management system per
DIN EN ISO 9001.
* Verification of specifications or adjustment services are not part of the calibration. For products from our factory, however, any necessary adjustment is frequently performed and the observance of the relevant specification is confirmed.
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Accessories
10 Accessories
10.1 General
The extensive accessories available for our measuring instruments are checked for compliance with currently valid safety regulations at regular intervals, and are expanded as required for new applications. Currently up-to-date accessories which are suitable
Ambient Conditions (EN 61010-031)
Temperature
Relative humidity
Pollution degree
–20
C ... + 50
C
50 to 80%
2
Application KS17-2/KS17-2AMB
(
Products
Measuring Technology – Portable
Multimeters
METRAHIT ...
Accessories).
10.2 Technical Data for Measurement Cables
Electrical Safety of KS17-2 safety cable set
Maximum Rated Voltage
Measuring Category
Maximum Rated Current with safety cap applied without safety cap applied
600 V 1000 V 1000 V
CAT IV CAT III CAT II
1 A
—
1 A
—
16 A
—
Please observe the maximum values of the electrical safety of the instrument.
Electrical Safety of KS17-2AMB safety cable set
(with antimicrobial properties, supply only with SECULIFEHIT AM )
Maximum Rated Voltage
Measuring Category
Maximum Rated Current with safety cap applied without safety cap applied
300 V 600 V 600 V
CAT IV CAT III CAT II
1 A
—
1 A
—
16 A
—
Please observe the maximum values of the electrical safety of the instrument.
66
!
Attention!
Please observe the maximum values of the electrical supply of the device.
In conformity with standard DIN EN 61010-031, measurements in an environment according to measuring category
III and IV may only be performed with the safety cap applied to the test probe of the measurement cable.
For establishing contact in 4 mm jacks you have to remove the safety cap by levering out the snap lock of the safety cap with another sharp object (e.g. the second test probe).
10.3 NA X-TRA Power Pack (not included)
Use only the power pack from GMC-I Messtechnik GmbH in combination with your instrument. This assures operator safety by means of an extremely well insulated cable, and safe electrical isolation (nominal secondary ratings: 5 V / 600 mA). Installed batteries are disconnected electronically if the power pack is used, and need not be removed from the instrument.
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Accessories
10.4 Interface Accessories for METRAHIT AM XTRA / XTRA / O UTDOOR ,
SECULIFEHIT AM and SECULIFEHIT MD (not included)
USB X-TRA Bidirectional Interface Adapter
This adapter makes it possible to connect STARLINE multimeters which are equipped with a serial IR interface to the USB port at a
PC. The adapter allows for data transmission between the multimeter and the PC.
METRAwin 10 PC Analysis Software
METRAwin 10 PC software is a multilingual, measurement data logging program* for recording, visualizing, evaluating and documenting measured values from METRA HIT multimeters.
Details on the system requirements are given in the installation instructions of METRAwin 10 / METRAwin 45 .
* runs under any IBM compatible Windows operating system
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67
Index
11 Index
Numerics
0.diSP
................................................................... 48
A
A.diSP
................................................................... 49
Addr ...................................................................... 53
APoFF ................................................................... 49
Automatic Shutdown
Disabling ....................................................... 17
Specifying a Time ......................................... 17
AUTO-Range Function ......................................... 18
B bAtt ....................................................................... 48
Batteries
Charge Level ................................................. 62
Charging Level .............................................. 13
Periods of Non-Use ...................................... 62
Replacement ................................................. 63 bEEP ..................................................................... 49
C
Cable Resistance ................................................. 37
Capacitance Measurement ................................. 38
Clear Memory ....................................................... 24
Clip-On Current Sensor ................................. 42, 43
Clip-On Current Transformer .............................. 44
Continuity Test ..................................................... 34
Current Measurement
Notes ............................................................. 39
Scope of Functions ....................................... 39
D dAtE ................................................................. 48, 50
Default Settings .................................................... 50
Diode Test ............................................................. 35
Display Illumination .............................................. 16
Duty Cycle Measurement ..................................... 32
E
Error Messages .................................................... 62
F
Fuse
Characteristic Values ....................................59
H
Housing Maintenance .......................................... 64
I
Interfaces
Accessories ...................................................67
States ............................................................13
irStb ....................................................................... 53 itEMP ..................................................................... 48
M
Manufacturer’s Guarantee ................................... 65
Measured Value Storage
DATA Function ..............................................21
Min-Max Values ............................................22
Measurement Cables ........................................... 66
Measuring Category
Characteristic Values ....................................59
Significance .....................................................8
Measuring Range Selection
Automatic ...................................................... 18
Manual .......................................................... 18
Memory
Ending Recording ......................................... 24
Querying Occupancy .................................... 24
Start Recording ............................................. 23
O
OCCUP ...................................................................48
Overview
Keys and Connections .................................. 12
Parameters ................................................... 47
P
Power Pack
Accessories .................................................. 66
Connector Socket Position ........................... 15
Initial Start-Up ............................................... 16
Product Support ......................................................3
Product Support Hotline .........................................3
R rAtE ........................................................................48
Recalibration Service ........................................4, 65
Remote ..................................................................36
Repair and Replacement Parts Service .................4
Replacing the Fuse ...............................................63
Resistance Measurement .....................................33
Return of Old Devices ...........................................64
S
Safety Precautions ..................................................8
Software Enabling ...................................................3
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Index
Standard Equipment .............................................. 2
Switching the Instrument On
Manual ..........................................................16
Via PC ............................................................16
Symbols
Digital Display ...............................................13
Instrument .....................................................15
Rotary Switch Positions ................................14
T
Temperature Measurement
With Resistance Thermometers ...................37
With Thermocouples .....................................36
tiME ................................................................. 48, 50
U
Use for Intended Purpose .................................... 10
V vErSion .................................................................. 48
Voltage Comparator ....................................... 29, 31
Voltage Measurement
Notes .............................................................26
Scope of Functions .......................................26
W
WEEE Mark ........................................................... 15
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