Gossen Metrawatt METRAHIT 2 User guide

Operating Instructions
METRAHIT2+
Universal TRMS Multimeter
3-349-476-02
5/10.09
Symbols used in the Digital Display
1
2
3 4
5
6
7
Max.
600 V !
11
5
4
2
9
10
7
1213
16
15
18
61 3
8
14
17
1 MAN: manual measuring range selection is active
2 MIN/MAX value storage
3 HOLD: display memory, “freeze” measured value
4 Digital display with decimal point and polarity display
5 Diode measurement selected
6 appears when acoustic signal is active
7 Selected type of current
8 Unit of measure 9 Unit of measure C / F for temperature measurement
10 Triangle appears: indicates overranging
11 Pointer for analog display
1 Display (LCD) 2 ON / OFF
3 HOLD / MIN/MAX Key for the following functions: save
4 MAN / AUTO Key for manual measuring range selection
5 FUNC Key for selecting ranges or functions
6 rotary selector switch for measuring functions
7 Connector jacks
Key for ON / OFF and display illumination ON / OFF
measured value, delete and MIN-MAX
2 GMC-I Messtechnik GmbH
12 REL: relative measurement with reference to offset
13 Scale for analog display
14 Indicates that the negative analog display range has been exceeded
15 Warning regarding dangerous voltage: > 40 V AC / 60 DC
16 Display in case of defective fuse
17 Low battery display
18 Symbol for continuous duty
Standard Equipment
1 TRMS digital multimeter 1 Protective rubber holster 2 1.5 V AA size batteries 1 Set of measurement cables KS17-2 1 DKD calibration certificate 1 Short-form operating instructions
Table of Contents
Page
1 Safety Features and Precautions ...............................3
2 Initial Start-Up ............................................................5
3 Selecting Measuring Functions and
Measuring Ranges ..................................................... 5
3.1 Automatic Measuring Range Selection .....................................5
3.2 Manual Measuring Range Selection .........................................5
3.3 Quick Measurements .............................................................. 5
3.4 Relative Measurement D REL ................................................... 6
4 LCD .............................................................................6
4.1 Digital Display ......................................................................... 6
4.2 Analog Display ........................................................................ 6
4.3 Display Illumination ................................................................. 6
5 Measured Value Memory “HOLD” ..............................6
6 Saving Minimum or Maximum Values
“MIN/MAX” Hold .........................................................6
7 Voltage Measurement ................................................7
7.1 Transient Overvoltages ............................................................ 7
7.2 Voltage Measurements at Above 600 V .................................... 8
7.3 Sub-function Hz ...................................................................... 8
8 Current Measurement ................................................8
8.1 Measuring Alternating Current with (Clip-On)
Current Transformers ............................................................ 10
8.1.1 Transformer Output mA / A ...................................................10
8.1.2 Transformer Output V ............................................................ 10
9 Resistance Measurement .........................................10
10 Continuity and Diode Testing ...................................11
11 Temperature Measurement ......................................12
12 Characteristic Values ...............................................13
13 Maintenance ............................................................16
13.1 Battery ................................................................................. 16
13.2 Fuses ................................................................................... 16
13.3 Housing ................................................................................ 16
14 Repair and Replacement Parts Service,DKD
Calibration Center* and Rental Instrument Service ..17
15 Guarantee .................................................................17
16 Product Support .......................................................17
17 Recalibration Service ...............................................17

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 the applicable European and national EC guidelines. We confirm this with the CE marking. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH.
The analog-digital multimeter is manufactured and tested in accordance with safety regulations IEC 61010–1:2001/ DIN EN 61010–1:2001/VDE 0411–1:2002. When used for its intended purpose, 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.
In the interest of your own safety and in order to protect the instrument, the multimeter is equipped with an automatic socket blocking mechanism. This mechanism is linked to the function selector switch and only allows access to those jacks which are actually required for the selected function. It also prevents the user from turning the selector switch to impermissible functions after the measurement cables have already been plugged in.
Observe the following safety precautions:
The instrument 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 occur.
Avoid working alone when taking measurements which involve contact hazards. Be certain that a second person is present.
Maximum allowable voltage between any of the connector jacks and earth is 600 V, category III. Nominal voltage at the system may not exceed 600 V. Voltage measurement may only be performed with the selector switch set to the V= or the V~ position.
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.
RMS
may
GMC-I Messtechnik GmbH 3
Measurements under moist ambient conditions are not
Warning!
!
Consecutive number
Registration number Date of calibration (year – month)
German Calibration Service– calibration laboratory
B0730
01-04
DKD-K­19701
permitted.
Be absolutely certain that the measuring ranges are not overloaded beyond their allowable capacities. Limit values can be found in the “Measuring Ranges” table in chapter 12 “Characteristic Values”.
All current measuring ranges are protected with fuses. Maximum allowable voltage for the measuring current circuit is 600 V in all “mA” and “A” ranges.
We recommend using our KS30 measuring adapter, available as an accessory, for hazard-free voltage measurement in power installations with up to 1000 V. The included internal resistor limits measuring current in the event of excessive voltage and operator error, and assures reliable quenching of active spark gaps. For additional information refer to chapter 7.2 “Voltage Measurements at Above 600 V”.
The instrument may not be operated in explosive atmospheres, or connected to intrinsically safe electrical circuits.
Meanings of symbols on the instrument:
Warning concerning a source of danger (attention: observe documentation)
Earth terminal
Repair, Parts Replacement and Balancing
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, the replacement of parts or balancing. If balancing, maintenance or repair of a live open instrument is required, this 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
After lengthy periods of storage under unfavorable conditions (e.g. humidity, dust, temperature), see ambient conditions on page 15
Continuous, doubled or reinforced insulation
This device may not be disposed of with the trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term ’WEEE’.
Indicates EC conformity
CAT III
Maximum allowable voltage
between the
connector jacks and earth is
600 V, category II I
.
DKD Calibration Upon Request
4 GMC-I Messtechnik GmbH

2 Initial Start-Up

Note!
Battery
Your instrument is supplied with two 1,5 V AA size batteries in accordance with IEC LR 6, and is ready for operation. Be sure
to refer to chapter 13.1 “Battery”, before initial start-up, or after your device has been in storage for a lengthy period of time.
Switching the Instrument On
Press the ON / OFF key.
Power-up is acknowledged with an acoustic signal. All of the segments at the liquid crystal display (LCD) are illuminated shortly. The LCD is shown in the diagram on page 2.
Electrical discharge and high frequency interference may cause incorrect displays to appear, and may disable the measuring sequence. In such cases, switch the instrument off and back on again in order to reset. If the problem persists, briefly dislodge the battery from the connector contacts.
Disconnect the instrument from the measuring circuit before opening and refer to chapter 13 “Maintenance”!
Automatic Shutdown
The instrument switches itself off automatically if neither one of the keys nor the rotary selector switch are activated for a period of approximately 10 minutes.
Disabling Automatic Shutdown
The instrument can be set to continuous duty. Press the FUNC key and the ON / OFF key simultaneously when switching the instrument on to this end. Continuous duty is indicated at the LCD by means of the symbol.
Switching the Instrument Off Press the ON / OFF key.

3 Selecting Measuring Functions and Measuring Ranges

The function selector 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 “mA” or the “A” function. 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.

3.1 Automatic Measuring Range Selection

The multimeter is equipped with automatic measuring range selection for all ranges except the 600 mV range. Auto­ranging 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.
The instrument is automatically switched to:
– The next highest range at typically (6039 digits + 1 digit) – The next lowest range at typically (560 digits – 1 digit)

3.2 Manual Measuring Range Selection

Auto-ranging can be deactivated and measuring ranges can be selected manually in accordance with the following table.
Manual operation is deactivated by pressing and holding the
MAN / AUTO key (approx. 1 s), by activating the rotary selector switch, or by switching the instrument off and
then back on again. If the instrument is switched back to auto-ranging in the
600 mV range, the respective range or 6 V is selected automatically.
AUTO/
MAN
(4)
brief
V : 600 mV 6V60 V 600 V 600 mV ... V: 6V 60 V  600 V  600 mV  6V ... mA : 60 mA  600 mA  ...
brief
mA : 60 mA  600 mA  ... A : 6A 10A 6A ... A : 6A 10A    :60M 600  6k 60 k
600k6M 60 M...
long Return to automatic range selection 2 x
Function
Manual mode active:
utilized measuring range is fixed
Range switching sequence for:
Acknowledge-
ment
Acou-
Dis-
stic
play
Signal
MAN
1 x
(10)
MAN
1 x
(10)

3.3 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 range with best resolution (see chapter 3.2)
or
•With the HOLD function (see chapter 5). In this way, the correct measuring range is selected automatically after the first measurement and all further measurements are executed more quickly.
The selected measuring range remains active for the subsequent series of measurements with these two functions.
GMC-I Messtechnik GmbH 5
3.4 Relative Measurement REL
Note!
MAX MIN
MAN / AUTO *
HOLDHOLD x 2
HOLD long
A reference value for relative measurements can be stored to memory with the keys MAN / AUTO and HOLD.
The applicable reference or correction value is substracted 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. Reference value setting is only possible for the respective manually selected measuring range.
Setting the Reference Value
Plug the measuring cable into the instrument and
measure a reference value
Press the MAN / AUTO key and the HOLD key
simultaneously. The instrument acknowledges storage of the reference value with an acoustic signal, and the REL symbol appears at the LCD. The value measured at the moment the keys are pressed serves as a reference value.
The reference value can be cleared by once again
pressing the MAN / AUTO and HOLD keys.
Relative measurement effects the digital display only. Relative measurement is not active during overflow. In the case of relative measurement, quantities may also appear as negative values.

4LCD

4.1 Digital Display

The measured value with decimal and plus or minus sign appears at the digital display. The selected unit of measure and the current type are displayed as well. A minus sign appears to the left of the value during the measurement of zero-frequency quantities, if the plus pole of the measured quantity is applied to the “” input. “OL” is displayed if the upper range limit of 6039 is exceeded (or 1999 in the range). The digital display is refreshed twice per second during V, A and  measurements.

4.2 Analog Display

The analog display with simulated pointer and the same dynamic performance as a moving-coil mechanism is refreshed 20 times per second during V, A and measurements. This display is especially advantageous for observing measured value fluctuation, and for balancing procedures.
The analog display has its own polarity indicator. If the measured value exceeds the display range, polarity at the analog display is switched after approximately 0.7 seconds. Overranging is indicated by the triangle at the right (> 6039 digits).
6 GMC-I Messtechnik GmbH

4.3 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.

5 Measured Value Memory “HOLD”

By pressing the HOLD key, the currently displayed measurement value can be “frozen” in the display, and “Hold” is simultaneously indicated. Automatic shutdown is deactivated during this process. The Hold display is deactivated if:
•the HOLD key is pressed and held
•the rotary selector switch is activated
•the FUNC multifunction key is pressed for a change of function, e.g. AC
Hz.
6 Saving Minimum or Maximum Values
“MIN/MAX” Hold
Minimum and maximum measured values applied to the measuring instrument’s input after the MAX/MIN function has been activated, can be “frozen” at the display with the MAX/ MIN function. The most important use of this function is the determination of minimum or maximum values during long­term measured quantity observation.
Select the measurement function with the
rotary selector switch and, if appropriate, with the FUNC multifunction key.
Connect the device under test as described in the
following measurement instructions.
Press the HOLD key twice.
MAX is displayed. The measuring instrument continually updates and digitally displays the largest occurring measured value.
Press the HOLD key.
MIN is displayed. The measuring instrument continually updates and digitally displays the lowest occurring measured value. Pressing HOLD once more switches this function back to MAX.
Press and hold the HOLD key for approx. 2 seconds, to
quit the HOLD function.
* range selection is not provided for with MAN + MIN / MAX

7 Voltage Measurement

Note!
Attention!
!
MAN
AUTO
brief
V=
– (+)
+ (–)
max. 600 V
V=: 600 mV 600 V
Measuring Ranges:
!
6V 60 V
60 V 600 V
600 V 600 mV
600 mV 6V
>60V:
> 600 V:
20.00
V
DC
acoustic signal
MAN
AUTO
brief
V~
Max. 600 V (1 kHz)
V~: 600 mV 600 V
(45 Hz 1kHz)
Measuring Ranges:
~
!
> 600 V:
6V 60 V
60 V 600 V
600 V 600 mV* 600 mV* 6V
* manual only
20.00
V
AC
~
>40V:
acoustic signal
Depending upon the voltage to be measured, set the
rotary selector switch to V
Connect the measurement cables as shown. The “”
connector jack should be grounded.
The 600 mV measuring range can only be selected manually with the MAN / AUTO key. If the measured value exceeds 60 V DC or 40 V AC the symbol appears at the display. An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit value of 600 V in the 600 V range.
Make sure than none of the current measuring ranges (neither “mA” nor “A”) are activated when connecting the multimeter for the performance of voltage measurements! If fuse trip limits are exceeded as a result of operator error, both the operator and the instrument are in danger!
GMC-I Messtechnik GmbH 7
or V .
Zero Balancing REL in the V AC und V DC Measuring Range
You can select the reference point in the V AC and V DC measuring range:
Plug the measuring cables into the instrument and
connect the free ends to each other.
After selecting the measuring range, briefly press the two
HOLD and MAN / AUTO keys.
The instrument acknowledges zero balancing with an acoustic signal and „0“ (1digit) and  REL appears at the LCD, depending on the measuring range. The voltage displayed at the moment the key is pressed is automatically substracted from all subsequent measured values. Zero balancing can be deleted:
by briefly pressing the MAN / AUTO key, which is
acknowledged with an acoustic signal,
by switching the instrument off.

7.1 Transient Overvoltages

The multimeter is protected against transient overvoltages of up to 6 kV with rise times of 1.2, and halftimes of 50 s. For measurements at transformers or motors with long pulse durations etc., we recommend the use of our KS30 measuring adapter. It provides protection against transient overvoltages of up t o 6 kV wit h rise times of 10, and halftimes of 1000 s. It has a continuous load capacity of 1200 V Additional influence error caused by the KS30 measuring adapter amounts to approximately –2%.
RMS
.

7.2 Voltage Measurements at Above 600 V

Voltage Measurements at Above 600 V with the HV3 High-Voltage Probe
black
black
red
x1000
x100
FUNC
brief
DC
AC~
AC~
DC
1x
A
...6 A
!
00.00
A
Current
~ ~
1
3
2
A: 6A 10.00 mA
Measuring Range:
MM
>11A:
!
0.000
A
DC
AC~
AC~
DC
acoustic signal
acoustic signal
...10 A
Voltages of greater than 600 V can be measured with a high­voltage probe, e.g. the HV3 Messtechnik GmbH. It is absolutely essential to ground the bonding terminal. Observe all applicable safety precautions!
1)
HV3: 3 kV
2)
HV30: 30 kV, for DC voltages only

7.3 Sub-function Hz

Briefly press the FUNC multifunction key to display the
frequency (max. 1_kHz) of the AC voltage.
Press the FUNC key once again to quit the Hz function.
1)
or the HV302) from GMC-I

8 Current Measurement

First disconnect supply power from the measuring circuit
or the consuming device, and discharge any included capacitors.
Select the A range with the rotary selector switch for
current greater than 600 mA, or the mA range for current less than 600 mA. Activate the highest measuring range first when measuring current of an unknown magnitude.
Select the current type appropriate for the measured
quantity by briefly pressing the FUNC key. Each time the key is pressed, DC and AC are alternately selected, and switching is acknowledged with an acoustic signal. The selected current type is indicated at the LCD by means of the DC and AC symbols. DC current is always active immediately after range selection with the rotary selector switch.
Securely connect the measuring instrument to the
consuming device in series as shown (without transfer resistor).
8 GMC-I Messtechnik GmbH
connector jacks.The following symbol appears at the
FUNC
brief
Measuring Range:
mA
... 600 mA
000.0
mA
~
R
x
~
R
x
1
3
2
> 600 mA:
!
Current
DC AC~
AC ~ DC
1x
mA: 60 mA 600,0 mA
00.00
mA
DC
AC~
DC
AC~
... 60 mA
acoustic signal
acoustic signal
digital display in this case: .
If a fuse blows, eliminate the cause of overload before placing the instrument back into service!
Refer to chapter 13 “Maintenance”, regarding fuse replacement.
Zero Balancing REL during Current Measurement
You can select the reference point in the mA AC / DC and A AC / DC measuring range:
Plug the measuring cables into the instrument and
connect the free ends to each other.
After selecting the measuring range, briefly press the two
HOLD and MAN / AUTO keys.
The instrument acknowledges zero balancing with an acoustic signal and „0“ (1digit) and  REL appears at the LCD, depending on the measuring range. The voltage displayed at the moment the key is pressed is automatically substracted from all subsequent measured values.
Zero balancing can be deleted: – by briefly pressing the MAN / AUTO key, which is
acknowledged with an acoustic signal,
by switching the instrument off.
Notes Regarding Current Measurement:
The measuring circuit must be mechanically stable and must be secured against accidental interruption. Select conductor cross-sections and connectors such that no overheating occurs.
An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 600 mA and 10 A measuring ranges.
Measuring ranges up to 600 mA are protected against short-circuit current of up to 25 A with an FF 1.6 / 700 V fuse link in combination with power diodes. The fuse has a breaking capacity of 50 kA at a nominal voltage of 700 V and ohmic load.
The 6A and 10 A current measuring ranges are protected with a 16 A / 600 V fuse link. The fuse has a breaking capacity of 100 kA at a nominal voltage of 600 V and ohmic load.
If one of the fuses blows, this condition is indicated at the LCD as soon as a measured quantity with a voltage of greater than 4 V is applied to the corresponding
GMC-I Messtechnik GmbH 9
8.1 Measuring Alternating Current with (Clip-On) Current
Attention!
!
~
R
x
~
R
x
1
3
Current
V~
05.00
V
Z13B
2
0.5
k
R
x
: 600 40 M
Measuring Range:
+
R
x
0V !
!
Transformers

8.1.1 Transformer Output mA / A

If current transformers are operated without being connected at the secondary side (e.g. as a result of defective or missing cables, a blown device fuse or incorrect connection), dangerously high voltages may occur at the connector jacks. For this reason, make sure that the measuring instrument’s current path and the transformer’s secondary coil connected to the instrument constitute an uninterrupted circuit, and connect this circuit to the and mA or A jacks.
Maximum allowable operating voltage is equal to the current transformer’s nominal voltage. Do not forget to consider the transformer’s transformation ratio and additional display error when reading measured values.

8.1.2 Transformer Output V

Some transformers are equipped with a voltage output (designation mV/A). The secondary terminals must thus be connected to and V.

9 Resistance Measurement

Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Set the rotary selector switch to .Connect the device under test as shown.
Zero Balancing REL in the entire resistance measuring range
Cable and contact resistances can be eliminated during resistance measurement by means of zero balancing:
Plug the measuring cables into the instrument and
connect the free ends to each other.
Press the MAN / AUTO and HOLD keys after selecting the
measuring range. The instrument acknowledges zero balancing with an acoustic signal and „0“ (+1 digit) and REL appears at the LCD, depending on the measuring range. The resistance value measured at the moment the key is pressed is automatically subtracted from all subsequent
measured values. Zero balancing can be deleted: – by briefly pressing the MAN / AUTO key, which is
acknowledged by an acoustic signal, – by switching the instrument off.
10 GMC-I Messtechnik GmbH

10 Continuity and Diode Testing

Note!
0.654
0L
Conducting Direction
Reverse Direction
0.000
V
FUNC
brief
0V !
Continuity
R < 40
!
030.0
acoustic
signal
Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Set the rotary selector switch to .Connect the device under test as shown.
Conducting Direction and/or Short-Circuit:
The instrument displays conducting-state voltage in volts. As long as voltage drop does not exceed the maximum display value of 1,999 V, several series connected components or reference diodes can be tested with a small reference voltage.
Reverse Direction or Interruption:
The measuring instrument indicates overflow “OL”.
Resistors and semiconductors which are connected in parallel to the diode distort measurement results!
Sub-function Continuity Test with Acoustic Signal
If the sub-function “continuity test with acoustic signal” is activated, a continuous acoustic signal is generated by the instrument within a display range of R < 40.
Acoustic Signal ON:
Briefly press the FUNC key.
Activation is acknowledged with an acoustic signal. The symbol appears at the display as well.
Acoustic Signal OFF:
Briefly press the FUNC key once again.
Deactivation is acknowledged with an acoustic signal.
The symbol is cleared from the display. The acoustic signal function is always inactive immediately after the “continuity test” function has been selected with the rotary selector switch. The acoustic signal can be activated and deactivated by repeatedly and briefly pressing the FUNC key. If the key is pressed and held, the acoustic signal is always deactivated, which is acknowledged with two acoustic signals.
GMC-I Messtechnik GmbH 11

11 Temperature Measurement

Note!
023.2
C
TC Measuring Range
Type_K –50.0 + 400.0 C
C
FUNC
brief
TYPE K
C F
The multimeter provides for the measurement of temperatures within a range of – 50°C to + 400°C with the help of a type K temperature sensor.
Set the rotary selector switch to „°C“.Connect the sensor to the two accessible jacks.
The device indicates the measured temperature in C at the digital display.
Briefly press the FUNC key to switch between C and F.
The cold junction temperature (reference temperature) is measured with a Pt100 temperature sensor inside the instrument. It is displayed when the measuring input is short-circuited. Due to internal heating or a change from warm to cold environment or vice versa, the reference temperature may differ from the ambient temperature.
12 GMC-I Messtechnik GmbH

12 Characteristic Values

Meas.
Function
Measuring Range
Reso­lution
Input Impedance
6000
600 mV 100 V>10G //<40pF 40M // < 40 pF 0.5 + 5
V
6V 1mV11M // < 40 pF 8 M // < 40 pF 0.5 + 5
60 V 10 mV 10 M // < 40 pF 8 M // < 40 pF 0.5 + 5
600 V 100 mV 10 M // < 40 pF 8 M // < 40 pF 0.5 + 5
Voltage drop at approx. range limit
60 mA 10 A 100 mV 100 mV 1.0 + 5 (> 10 D) 1.5 + 5 (> 10 D)
A
600 mA 100 A 700 mV 700 mV 1.0 + 5 1.5 + 5 (> 10 D)
6 A 1 mA 200 mV 200 mV 1.0 + 5 (> 10 D) 1.5 + 5 (> 10 D)
10 A 10 mA 300 mV 300 mV 1.0 + 5 1.5 + 5 (> 10 D)
Open-circuit voltage
Meas. current at
range limit
600 100 m max. 1 V max. 250 A1 + 5
6k 1  max. 1 V max. 100 A 0.7 + 3
60 k 10 max. 1 V max. 12 A 0.7 + 3
600 k 100 max. 1 V max. 1.2 A 0.7 + 3
6M 1k max. 1 V max. 120 nA 0.7 + 3
40 M 10 k max. 1 V max. 50 nA 2.0 + 3
2V 1mV max. 3V 1 + 5
600 0,1 < 1 V 1 + 5
–50.0 ...
TYP K
C
Hz
1)
At 0 C...+40C
2)
with zero balancing, + 35 digits without zero balancing
3)
without sensor
4)
12 A 5 minutes, 16 A 30 seconds
5)
1 ... 35 d from the zero point due to TRMS converter when probe tips are short­circuited
6)
power limiting: frequency x voltage max. 6 x 106 V x Hz for U > 100 V
+400.0 C
100 Hz
1000 Hz
0.1 C 1.0 + 5
0,1 Hz 0.1 + 2
1 Hz 0.1 + 2
Key
rdg. = reading (measured value) d = digit
Intrinsic Error at Max. Resolution
under Reference Conditions
(... % rdg. + ... d) (... % rdg. + ... d)
5)
1 + 5
5)
(... % rdg. + ... d)
2)
(... % rdg. + ... d)
(... % rdg. + ... d)
3)
(... % rdg. + ... d)
Overload Capacity
1)
Value Time
600 V
DC AC
Cont.
eff
Sinus
1,0 A Cont.
4)
10 A
Cont.
600 V
DC AC
max. 10 s
eff
Sinus
600 V
DCACmax. 10 s
600 V
DC/AC
max. 10 s
eff
Sinus
6)
600 V
Meas.
Function
V
A
C
Hz
GMC-I Messtechnik GmbH 13
Influencing Quantities and Influence Error
Influencing
Quantity
Tempera-
ture
Measured
Quantity
Frequency
Sphere of Influence
0 C ... +21 C
and
+25 C... +40 C
> 30 Hz ... 45 Hz A 2,0 + 10
>65Hz...1kHz
> 30 Hz ... 45 Hz
> 65 Hz . ... 500 Hz 600 mV 35 + 20
> 65 Hz ... 1 kHz 6 / 60 V 2,5 + 10
Measured Quantity /
Measuring Range
600 mV 1.0 + 3
6 ... 600 V 0.15 + 1
V0.4+2
60 mA ...
600 mA
6A/10A 0.5+1
A0.75+1
0
600 0.25 + 2
6k ... 6 M 0.15 + 1
40 M 1.0 + 1
– 50 ... + 200 C1 K + 2
+ 200 ... + 400 C1 + 2
60 / 600 mA / 6 A 1,5 + 10
10 A 2 + 10
600 mV 3 + 10
6 / 60 /600 V 2,5 + 10
(... % rdg. + ... digits)
2)
Influence Error 1)
0.5 + 1
0.15 + 2
Influencing
Quantity
Common
Mode
Interference
Voltage
Series Mode Interference
Voltage
Sphere of Influence
Interference quantity max. 600 V V > 120 dB
Interference quantity max. 600 V
50 Hz, 60 Hz sine
Interference quantity: V ,
respective nominal value
of the measuring range,
max. 600 V, 50 Hz, 60 Hz
Interference quantity max. 600 V V > 110 dB
sine
Response Time (after manual range selection)
Measured Quantity /
Measuring
Range
V, V, A, A
600 ...6M 1.5 s 2 s
40 M 4s 5s
C max. 1 ... 3 s
Response Time
Analog Display Digital Display
0.7 s 1.5 s
—1.5s
Measuring
Range
6V , 60 V
600 V > 70 dB
V > 50 dB
Measured Quantity
of the upper range limit
of the upper range limit
of the upper range limit
Damping
>80dB
Step Function
from 0 to 80%
from to 50%
from 0 to 50%
Influen-
cing
Quantity
Battery Voltage
Relative
Humidity
HOLD 1 Digits
MIN /
MAX
1) For temperature: specified error valid starting with temperature changes as of 10 K. For frequency: specified error valid starting with display values as of 300 digits.
2) With zero balancing
3) After the symbol appears at the display
Sphere of
Influence
3)
... < 2.9 V
> 3.1 V ... 3.6 V
75%
3 days
Instrument off
—V, A  2 Digits
Measured Quantity /
Measuring
Range
V 2 Digits V 4 Digits A 4 Digits A 6 Digits
60 / 600 /
C
6k ... 40 M3 Digits
V A
C
Influence Error
4 Digits
1 x intrinsic error
Reference Conditions
Ambient temperature + 23 C  2K Relative humidity 40 % ... 60 % Measured quantity
frequency 45 Hz ... 65 Hz Measured quantity
waveshape sinusoidal Battery voltage 3 V  0.1 V
Display
LCD panel (65 mm x 30 mm) with analog and digital display including unit of measure, type of current and various special functions Analog
: Display LCD scale with pointer Scale length 55 mm for all ranges Scaling 0 ... 60 with 61 scale divisions for
all ranges Polarity display With automatic switching Overflow display Triangle Measuring rate 20 measurements per second Digital
: Display / char. height 7-segment characters / 15 mm Number of places 3
6
/7-place 6000 steps
Overflow display OL” appears
14 GMC-I Messtechnik GmbH
Polarity display “–” sign is displayed if plus pole is
connected to “”
Measuring rate 2 measurements per second
Power Supply
Battery 2 x 1.5 V AA size batteries
alkaline manganese per IEC LR6 or equivalent rechargeable NiCd battery
Service life With alkaline manganese:
approx. 750 hours for V , A approx. 200 hours for V, A
Battery test is displayed automatically if
battery voltage drops to below approx. 2.1 V.
Electrical Safety
Safety class II per IEC 61 010-1:2001/
EN 61010-1:2001/VDE 0411-
1:2002 Overvoltage category CAT II I Nominal voltage 600 V Fouling factor 2 Test voltage 5.2 kV~ per IEC 61010-1:2001/
EN 61010-1:2001
Electromagnetic Compatibility (EMC)
Interference emission EN 61 326-1:2006 class B Interference immunity EN 61326-1:2006
EN 61326-2-1:2006
Fuses
Fuse links for all ranges up to 600 mA
FF(UR) 1.6 A/1000 V; 6.3 mmx32 mm,
switching capacity: 10 kA at
1000 V~ with ohmic load, protects
all current measuring ranges up to
600 mA in combination with power
diodes Fuse links for all ranges up to 10 A FF 10 A/1000 V;
10 mmx 38 mm, switching capacity: 30 kA at 1000 V with ohmic load, protects 6 A and 10 A ranges to 1000 V Refer to chapter 13 “Maintenance”, regarding fuse manufacturers and types.
Ambient Conditions
Accuracy range 0 C ... + 40 C Operating temperature –10 C ... + 50 C Storage temperature – 25 C ... + 70 C without batteries Relative humidity
45 ... 75%, no condensation allowed Elevation to 2000 m Deployment indoors only, except within
specified ambient conditions
Mechanical Design
Protection IP 40
per DIN VDE 0470 part 1 /
EN 60529 Extract from table on the meaning of IP codes
IP XY
st
(1
Protection against
digit X)
foreign object entry
0 not protected 0 not protected 1 50.0 mm dia. 1 vertically falling drops
2 12.5 mm dia. 2
3 2.5 mm dia. 3 spraying water 4 1.0 mm dia. 4 splashing water
IP XY (2nd digit Y)
Protection against the penetration of water
vertically falling drops
with enclosure tilted 15
Dimensions 84 mm x 195 mm x 35 mm Weight approx. 350 gr. with battery
GMC-I Messtechnik GmbH 15

13 Maintenance

Attention!
!
Attention!
!
(b) (a)
Disconnect the instrument from the measuring circuit before opening to replace batteries or fuses!

13.1 Battery

Make sure that no battery leakage has occurred before initial start-up, and 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 2 x 1.5 V AA size batteries or two equivalent NiCd rechargeable batteries.
Replacing the Battery
Set the instrument face down onto a flat working surface,
loosen the two screws at the back and lift off the housing base, starting at the bottom. The housing top and housing base are held together with the help of snap hooks at the top front.
Remove the batteries from the battery compartment.Insert two new 1.5 V AA size batteries into the battery
compartment, making sure that the plus and minus poles match up with the provided polarity symbols.
Important for reassembly: First set the housing base onto
the housing top and align accurately (see photo below). Then press the two housing halves together, first at the bottom front (a), and then at the top front (b).
Secure the housing base with the two screws.Please dispose of depleted batteries in accordance with
environmental protection regulations!

13.2 Fuses

If one of the fuses blows, this condition is displayed at the LCD as soon as a measured quantity with a voltage of greater than 4 V is applied to the corresponding connector jacks. The following symbol appears at the digital display in this case:
.
The 16 A fuse interrupts the 6 A and 10 A ranges, and the
1.6 A fuse interrupts all other current measuring ranges. All other measuring ranges remain functional.
If a fuse should blow, eliminate the cause of overload before placing the instrument back into service!
Replacing the Fuse
Open the instrument as described under “Replacing the
Battery”.
Remove the blown fuse with the help of an object such
as a test probe, and replace it with a new fuse.
The following fuses are approved for use:
For current measuring ranges up to 600 mA:
Type FF 1.6 A / 1000 V AC (10 kA),
6.3 mm x 32 mm
For 6 A and 10 A current measuring ranges:
FF 10 A/1000 V AC (30 kA), 10 mm x 38 mm
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.

13.3 Housing

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 and solvents.
Device Return and Environmentally Compatible 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 not subject to the RoHS directive.
We identify our electrical and electronic devices (as of August 2005) in accordance with WEEE 2002/96/ EG and ElektroG with the symbol shown to the right per DIN EN 50419. These devices may not be disposed of with the trash. Please contact our service department regarding the return of old devices (see chapter 14).
16 GMC-I Messtechnik GmbH
14 Repair and Replacement Parts Service,
Calibration Center* and Rental Instrument Service
If required please contact:
GMC-I Service GmbH
Service Center
Thomas-Mann-Str. 16-20 90471 Nürnberg • Germany Phone +49 911 817718-0 Fax +49 911 817718-253 e-mail service@gmc-instruments.com
This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.
* Calibration Laboratory for Electrical Quantities
Competent Partner
GMC-I Messtechnik GmbH is certified in accordance with DIN EN ISO 9001:2000. Our DKD calibration lab is accredited by the Deutscher Kalibrierdienst (German Calibration Service) in accordance with DIN EN ISO/IEC 17025:2005 under registration number DKD–K–19701.
We offer a complete range of expertise in the field of metrology: from test reports and factory calibration certificates, right on up to DKD calibration certificates.
Our spectrum of offerings is rounded out with free test equipment management.
An on-site DKD calibration station is part of our service department. If errors are discovered during calibration, our specialized personnel are capable of completing repairs using original replacement parts. As a full service calibration lab, we can calibrate instruments from other manufacturers as well.
DKD – K – 19701 accredited per DIN EN ISO/IEC 17025
Accredited quantities: direct voltage, direct current value, direct current resistance, alternating voltage, alternating current value, alternating current active power, alternating current apparent power, DC power, capacitance, frequency, temperature
DKD Calibration Certificate Reprints (upon request)
If you order a DKD calibration certificate reprint for your instrument, please provide us with the reference numbers indicated in the upper and lower most fields of the calibration seal. We do not need the instrument’s serial number.

15 Guarantee

All METRAHit measuring and calibration instruments are guaranteed for a period of 3 years after date of shipment.
Calibration is guaranteed for a period of 12 months. The 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.

16 Product Support

If required please contact:
GMC-I Messtechnik GmbH
Product Support Hotline
Phone +49 911 8602-0 Fax +49 911 8602 709 E-Mail support@gossenmetrawatt.com

17 Recalibration Service

We calibrate and recalibrate all instruments supplied by GMC-I Messtechnik GmbH, as well as other manufacturers, at our service center (e.g. after one year within the framework of your test equipment monitoring program, prior to use, etc.) and we offer you free test equipment management. Refer to chapter 14 for address.
GMC-I Messtechnik GmbH 17
Edited in Germany • Subject to change without notice • A pdf version is available on the Internet.
GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg •
Germany
Phone +49 911 8602-111 Fax +49 911 8602-777 E-Mail info@gossenmetrawatt.com www.gossenmetrawatt.com
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