Operating Instructions
METRAport3A
Analog Multimeter
3-349-303-15
5/11.11
www.GlobalTestSupply.com
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1 Scale
2 Cover of battery compartment
3 Connection socket „10 A“ for the highest current range
4 Connection socket for the measuring range A|
5 Connection socket for the measuring range V (high potential)
6 Connection socket for all measuring ranges
7 Eye for fastening of the carrying strap
8 OFF| ON: on/off switch (off when the instrument is closed)
9 Potentiometer full scale deflection setting for resistance measurement
10 Function switch and range switch
11 Setscrew for mechanical zero
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Contents
Page
1 Safety Features and Precautions ............................................................4
2 Application ..............................................................................................6
3 Description .............................................................................................6
4 Operation ................................................................................................7
4.1 Controls ...................................................................................................7
4.2 Starting the Instrument ..............................................................................9
4.3 Voltage Measurement .............................................................................10
4.3.1 DC and AC Voltages up to 600 V (Direct Connection) ................................10
4.4 Current Measurement .............................................................................11
4.4.1 DC and AC Currents up to 1 A (Direct Connection) ....................................12
4.4.2 DC and AC Currents up to 10 A (Direct Connection) ..................................13
4.4.3 DC and AC Currents above 10 A with External Shunt .................................13
4.4.4 AC Currents with (Clip-on) Current Transformers ......................................14
4.4.5 DC and AC Currents with (Clip-on) Current Sensors
(Current Transformers with Voltage Output) .............................................15
4.5 Measurement of Composite Voltages and Composite Currents ...................16
4.5.1 Composite Voltages ................................................................................16
4.5.2 Composite Currents ................................................................................16
4.6 Resistance Measurement .......................................................................17
4.7 Test of Diodes and Transistors .................................................................18
5 Technical Data .....................................................................................20
6 Maintenance .........................................................................................24
6.1 Battery ...................................................................................................24
6.2 Melting Fuse ...........................................................................................24
6.3 Housing ..................................................................................................26
7 Recalibration ........................................................................................26
8
Accessories .......................................................................................................... 27
8.1 General ..................................................................................................27
8.2 Technical Data for Measurement Cables
(scope of delivery: KS17-2 safety cable set) ..............................................28
9 Repair and Replacement Parts Service
Calibration Center and Rental Instrument Service ...............................29
10 Product Support ....................................................................................29
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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 has been manufactured and tested in
accordance with safety regulations IEC 61010–1:2001/
DIN EN 61010–1:2001/VDE 0411–1:2002. If used for its intended
purpose, safety of the operator, as well as that of the instrument, is
assured. However, safety cannot be guaranteed if the instrument is
used improperly or handled carelessly.
In order to maintain flawless technical safety condition, 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.
Observe the following safety precautions
• The instrument may only be operated by persons who are capable
of recognizing contact hazards and implementing appropriate
safety precautions. Contact hazards exist anywhere, where voltages of greater than 33 V RMS may occur.
• Avoid working alone when taking measurements which involve
contact hazards. Be certain that a second person is present.
• Maximum allowable voltage between terminals (3), (4), (5), (6) and ground
is equal to 600 V category II or 300 V category II I.
• The instrument may only be used for current measurement in power systems if the electrical circuit is protected with a fuse or a circuit breaker
with a rating of up to 20 A. In order to conform to the CAT requirements,
two fuse links have been fitted for the ranges mA und A.
• Be prepared for the occurrence of unexpected voltages at devices
under test (e.g. defective devices). For example, capacitors may
be dangerously charged.
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• Make certain that the measurement cables are in flawless condition,
!
e.g. no damage to insulation, no interruptions in cables or plugs
etc.
For the application of measuring cables see chapter 8.2.
• No measurements may be performed 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 can be
found in the “Measuring Ranges” table in chapter 5 „Technical
Data“.
Meaning of symbols on the instrument
Warning concerning a point of danger
(Attention: observe documentation!)
Earth
Continuous doubled or reinforced insulation
CAT II / II I Measurement category I I 600 V / III 300 V device
Indicates CE conformity
fuse
This device and the inserted (rechargeable) batteries may not be
disposed of with the trash. For further details on the WEEE marking, please refer to our website www.gossenmetrawatt.de and
enter search key ’WEEE’.
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Repairs, 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 repair, replacement of parts or balancing. If repair or balancing 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 instrument demonstrates visible damage
• If the instrument no longer functions
• After long periods of storage under unfavorable conditions, e.g.
humidity, dust, excessive temperature.
2 Application
The multimeter is an analog multimeter with an electronic amplifier. It
offers a great number of applications in the field of the electrotechnical
practice, e.g. in research and development, manufacture, operation,
test room and service as well as in the field of training and further education.
3 Description
The multimeter features 46 measuring ranges for DC and AC voltages
up to 1000 V, AC voltage levels from –40 to +62 dB, DC and AC currents up to 10 A and resistances up to 20 M
resistance of 10 M
on all voltage measuring ranges.
All measuring ranges are selected with a central range switch. They are
clearly arranged in the turning area of the switch.
Measuring unit and indicating unit are housed in two different case
halves which are connected with each other across a joint with a
stepped stop device. An optimum reading angle can thus be set in all
positions of use for easy reading.
. It has a constant input
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Several well-tuned protection means protect the instrument against
damage through improper handling and overload within the specified
limit values for overload:
• Overdimensioned precision resistors
• Melting fuse in conjunction with protective power diodes
• Overvoltage arrester
The instrument operates independent of the mains on a commercially
available 9 V flat cell battery. Thanks to the low power consumption of
the electronic components, a long battery life is assured.
The rugged design of the multimeter assures fine protection in the
case of rough mechanical duty. In closed condition, the instrument
offers additional mechanical protection for the measuring unit and the
indicating unit. The connection sockets are protected against accidental contact. Both the special measuring leads the connection plugs of
which are protected against accidental contact (lead set KS17-2) and
all measuring leads with conventional banana plugs (4 mm diameter)
can be used.
4 Operation
4.1 Controls
ON/OFF switch
The toggle switch is used to turn the instrument on and off. This switch
should be switched to the "OFF" position when the instrument is not
operated for extended periods of time in order to avoid unnecessary
load on the battery. Apart from that, even a leakproof battery may leak
when the instrument remains turned on for several days with a discharged battery. Damages caused by leaking batteries are not covered by the instrument warranty.
When the instrument is closed, the battery is automatically disconnected.
Range switch
The multimeter has only one rotary switch. All measuring ranges are
selected with it. Without disconnecting the measured variable, it is
possible to switch from the DC voltage ranges to the corresponding
AC voltage ranges or from the DC current ranges to the corresponding
AC current ranges. The measuring circuit is not interrupted when
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changing the current measuring ranges. When making current and
Attention!
!
voltage measurements, take care that the range switch is first set to the
highest measuring range. Then work down to lower measuring ranges
until optimum display is obtained.
When the measuring voltage, e.g. 250 V , is applied, do not
switch to the resistance measuring ranges. From the range
x 100 on there is danger of damaging the contacts of the
range switch.
Eye for fastening of the carrying strap
The carrying strap can be fastened at the eyes. It allows for the instrument to be carried around the neck. Both hands are free for measuring.
Setscrew
for setting of the mechanical zero.
Analog indication
Indication of the measured value is effected by a moving-coil core
magnet movement withspring-loaded jewel bearings on a mirrorbacked scale of a maximum length of 101 mm.
Connection sockets
The instrument has four connection sockets which are protected
against accidental contact. They have the following functions:
Socket „10 A“
connector for the highest current meas. range 10 A .
Socket „A|“ connector for current measuring range up to max.
1 A and for all resistance measuring ranges.
Socket „V“
connector for all voltage meas. ranges (high potential).
Socket „“ common connector for all measuring ranges to
which earth potential of the measured variable has
to be applied. This input is connected with the
shielding within the instrument.
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Special measuring leads the connection plugs of which are protected
Attention!
!
Attention!
!
against accidental contact (lead set KS17-2) as well as all leads with
banana plugs (4 mm diameter) can be plugged onto the sockets.
Melting fuses
for measuring circuit (see also chapter 5).
Potentiometer
for full scale deflection
setting when measuring resistance
4.2 Starting the Instrument
Installing the battery
To install or replace the battery, the battery compartment must be opened.
Ð
Remove the measuring leads from the measuring circuit prior
to removing the cover of the battery compartment!
Ð Close the instrument.
Ð Put a coin or a similar object into the slot between the case and the
cover of the battery compartment and press down.
Ð Open the instrument completely and remove the cover of the bat-
tery compartment.
Ð Install a 9 V flat cell battery into the battery compartment.
Only use a leak-proof, 9 V flat cell battery, per IEC 6LR61, if
possible!
Ð Reattach the cover of the battery compartment and press onto it
until it engages.
Checking the mechanical zero
Put the multimeter into its position of use, turn off switch and check
the mechanical zero position of the pointer. Correct with the adjustment screw, if required.
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Checking the battery voltage
Attention!
!
– / ~ + / ~
If the pointer is within the zone marked with the battery symbol „ “
after the instrument has been turned on then the battery voltage is sufficient that is, it is assured that the error limits according to the data
given in chapter 5 „Technical Data“ are maintained.
4.3 Voltage Measurement
Regardless of the magnitude of the voltage being measured,
for safety reasons, the sum of the voltage being measured
and the voltage to earth must not exceed 600 V CAT II or
300 V CAT III when the multimeter is connected directly!
If possible, take the connection socket, marked „“, immediately to
earth or to the point having the lowest potential to earth when making
any voltage measurements.
4.3.1 DC and AC Voltages up to 600 V (Direct Connection)
Ð Set the range switch to posi-
tion 600 V or 600 V~.
Ð Connect the measurement
cables as shown.
With DC voltage note the polarity! The „“ jack must be
grounded. For safety reasons, leads with connection
plugs that are protected against accidental contact (KS17-2) should
be used.
Ð Set switch to position „ON“.
Ð Work down to lower voltage ranges until optimum indication is ob-
tained.
Ð Read the measuring voltage on the VA scale.
Note: Overload protection up to 600 V is provided by a PTC thermistor; cooling time of the thermistor until the start of next measurement:
grant at least 2 minutes.
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4.4 Current Measurement
Attention!
!
Attention!
!
The multimeter should be connected into the line having the
lowest voltage to earth. For safety reasons, the voltage to
earth must not exceed 600 V CAT II or 300 V CAT III!
The measuring circuit must be set up mechanically solid and protected
against accidental opening. The conductor cross sections and the
connection points must be designed in such a way that there will be
no unpermissible warm-up. The current measuring ranges
10 μA ... 1 A are protected by a 1.6 A superquick-action melting fuse
(FF 1.6A/600V AC) in conjunction with power diodes. The maximum
breaking capacity of the protective means is 200 A (one half wave)
with a nominal voltage of 600 V and ohmic load.
Upon cut-out of the protective means, eliminate the cause of
overload before puting the instrument back to serviceable
condition!
The 10 A range is protected by a 16 A superquick-action melting fuse
(FF 16A/600V AC).
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4.4.1 DC and AC Currents up to 1 A (Direct Connection)
– / ~ + / ~
R
V
Ð Disconnect the
power supply to the
measuring circuit
and/or power consumer (R
charge all
), and dis-
V
capacitors, if available.
Ð Set the range switch
to position
1/10 A or
1/10 A~.
Ð Interrupt the mea-
suring circuit and
safely connect the
measuring leads
(without transient resistor!) in series with the power consumer R
.
v
With DC current note the polarity!
Ð Set switch to position „ON“.
Ð Reconnect the power supply to the measuring circuit.
Ð Work down to lower current measuring ranges until optimum indica-
tion is obtained. Switching over does not interrupt the measuring
circuit.
Ð Read the measured value on the V, A scale.
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4.4.2 DC and AC Currents up to 10 A (Direct Connection)
– (+) / ~ + (–) / ~
R
V
– / ~ + / ~
R
V
R
N
Ð Disconnect the
power supply to the
measuring circuit
and/or power consumer (R
charge all
), and dis-
V
capacitors, if available.
Ð Set the range switch
to position
1/10 A or
1/10 A~.
Ð Interrupt the mea-
suring circuit and
safely connect the
measuring leads (without transient resistor!) in series with the power
consumer R
. With DC current note the polarity!
v
Ð Set switch to position „ON“.
Ð Reconnect the power supply to the measuring circuit.
Ð Read the measured value on the V, A scale 0 ... 100.
4.4.3 DC and AC Currents above 10 A with External Shunt
Measurements of currents above 10 A are
possible with shunts
(R
), e.g. 100 A/
N
100 mV.
Ð Set the range switch
to position 100 mV,
for instance, depending on the voltage drop at the shunt.
Ð Then proceed according to chapter 4.4.1.
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4.4.4 AC Currents with (Clip-on) Current Transformers
Attention!
!
V~
M
I(A)
Prior to closing the primary circuit, verify that the secondary
circult is closed. If current transformers are operated in open
state on the secondary side, e.g. due to defective or not connected leads, due to a blown fuse because of prior overload,
or due to a wrong position of the range switch (not on the current range), dangerously high voltages can appear at the connection terminals. Therefore, first check that the current circult
of the measuring instrument and the secondary winding of the
transformer which is connected to the instrument form an
uninterrupted measuring circuit. This can be done for all measuring ranges by means of a resistance measurement as
described in chapter 4.6.
Clip-on current transformers allow for measurements of AC currents
without the need to interrupt the operating circuit. For the use of both
bushing type current transformers and clip-on current transformers the
maximum permissible operating voltage is the rated voltage of the current transformer. Take into account the additional error in indication.
Ð Set the range switch to position A~.
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Ð Select the measuring range of the multimeter as a function of the
V/~
I(A)
Load
measuring range and the transformation ratio of the clip-on transformer.
Ð Connect the measurement cables as shown.
Ð Set switch to position „ON“.
Ð Scan the electrical circuit with the clip-on transformer.
Ð Read the measured value by making allowances for the transforma-
tion ratio of the transformer.
Ð Disconnect the clip-on transformer from the electrical circuit before
separating the measurement cables from the instrument!
4.4.5 DC and AC Currents with (Clip-on) Current Sensors (Current Transformers with Voltage Output)
Ð Set the range switch to position V or V~.
Ð Select the measuring range of the multimeter as a function of the
measuring range and the transformation ratio of the clip-on sensor.
Ð Connect the measurement cables as shown.
Ð Set switch to position „ON“.
Ð Scan the electrical circuit with the clip-on sensor.
Ð Read the measured value by making allowances for the transforma-
tion ratio of the transformer.
Example Current Sensor Z13B:
Measuring range of clip-on sensor: 60 A /40 A~,
Output of clip-on sensor: 10 mV/A (max. 600 mV)
Measuring range of multimeter: 1 V /~ 300 mV /~
Indicated value: 150 mV 15.0 A
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4.5 Measurement of Composite Voltages and Composite Currents
Attention!
!
The multimeter allows for separate measurements of DC and AC components of composite voltages and composite currents.
The sum of the DC and AC components of the measured variable shall not exceed the permissible limit values for overload
according to chapter 5, and/or the response values of the
protective means!
4.5.1 Composite Voltages
Perform the measurement in accordance with chapter 4.3.
DC voltage measurement with superimposed AC voltage
The AC voltage component may be 5 times the full scale value on
50 Hz and 50 times the full scale value from 500 Hz on. The additional
error is then smaller than 2.5% of the full scale value.
AC voltage measurement with superimposed DC voltage
The sum of the AC voltage and the superimposed DC voltage shall not
exceed the permissible limit values for overload according to
chapter 5.
4.5.2 Composite Currents
Perform the measurements according to chapter 4.4.
On the 10 μA ... 100 mA measuring ranges, the sum of DC and AC
component causes an erroneous indication from the threefold full
scale value on up due to the response of the protective means.
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4.6 Resistance Measurement
Attention!
!
R
x
Voltage Drop
For resistance measurement, the
resistance R
switched in parallel to the internal
resistance. That is why with open
input terminals (R
value (full scale deflection) is indicated. The polarity of the voltage to
be measured corresponds to the
markings on the connection sockets „A|“ and „“. The resistance
measuring ranges are protected by
a superquick-action melting fuse
FF 1.6A/600V AC in conjunction
with power diodes. The overload
limit of the protective means is 200 A at a maximum (one half wave)
on 600 V
to be measured is
x
= ) the scale
x
.
eff
Upon cut-out of the protective means:
Check the measuring electric circuit and eliminate the cause
of overload prior to putting the instrument back to serviceable
condition.
On the ranges
x1, x 10 and x 100 the open-circuit voltage at
the sockets is approximately 100 mV. The voltage across the device
under test can be read on the 0 ... 100 graduation, whereby 100 scale
parts correspond to 100 mV.
On the ranges k
x1 and k x 10 the open-circuit voltage at the
sockets is approximately 1 V. The voltage across the device under test
can be read on the 0 ... 100 graduation, whereby 100 scale parts correspond to 1 V. Because the open-circuit voltage is approximately 100
mV on the ranges
x1, x 10 and x 100, resistance measure-
ments are possible on circuit boards that are also equtpped with
semi-conductors.
Ð Set the range switch to position
Ð Set switch to position „ON“.
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x1...k x 10.
Ð With adjustment potentiometer, adjust to full scale deflection .
Attention!
!
Ð Connect the measurement cables as shown.
Ð Read the resistance value on the
scale giving consideration to the
multiplication factor.
Only electrically dead items may be measured. External voltages would falsify the measured result.
After the range switch has been switched from one resistance measuring range to another, always check the full scale deflection
and
correct with potentiometer, if required.
4.7 Test of Diodes and Transistors
The resistance measuring ranges k x 1 and k x 10 are also suited
for coarse functional tests of diodes and transistors. A short circuit or
an interruption of a diode and/or a diode path between base, collector
and emitter of a transistor can be found in a simply way with a "resistance measurement". The polarity of a diode and the base connection
of a transistor can also be found in this way. The device under test
cannot be destroyed as the measuring voltage is 1 V at a maximum
and the measuring current. 2.2 μA or 22 μA at a maximum. From this
limitation of the measuring voltage and the measuring current it follows, however, that semi-conductors with relatively high reverse and/
or residual current, such as power diodes and power transistors, for
instance, and also rectifiers with several series-connected elements
cannot be tested as, due to the small measuring current, the difference
between the readings in forward and/or reverse direction are not
sufficiently marked.
Ð Set the range switch to position k
Ð Set switch to position „ON“.
Ð With adjustment potentiometer adjust to full scale deflection
Ð Connect the measuring leads to the sockets „A|“ and „“.
Ð Connect diode or transistor according to the following table and
measure both in forward and reverse direction.
x 1 or k x 10.
.
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Ð Read the resistance value on the -scale and the voltage on the V,
AK
E
B
C
NPN
E
B
C
PNP
A scale with the 100 part graduation.
Diode Transistor
Measure-
ment
in on socket on socket on socket
Forward
direction
Reverse
direction
A|A| A|
A|A| A|
B= Basis C= Collector E= Emitter
Valuation of a diode and/or the diode path of a transistor
A diode and/or a transistor functions when the indication on the V, A
scale during a measurement in forward direction is smaller than the
indication during a measurement in reverse direction. The qualitative
behaviour and the technical data of the semi-conductor can, however,
not be judged by the degree of deflection; mainly the current gain of a
transistor is not picked up. When measuring in reverse direction, the
multimeter indicates the voltage on the diode path on the k
(1 V for full scale value
). The reverse current flowing thereby is the
x 10 range
difference between the full scale value (graduation 100) and the indication
. One graduation corresponds to 10 mV and/or 22 nA.
A diode and/or a transistor is interrupted when
close to
is indicated on the -scale in both directions (insulation
resistance)
. A diode and/or a transistor has a short between the con-
or the same value
nection electrodes when 0 or the same value close to 0 is indicated on
the
-scale in both directions.
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5 Technical Data
1)
Voltage
100 mV –20 dB –40 ... –18 dB
Const. Measuring Span
Level
2)
Input
Resistance R
i
Overload
Protection
up to
600 V
300 mV –10 dB –30 ... – 8 dB 600 V
1 V 0 dB – 20 ... + 2 dB 600 V
3 V +10 dB –10 ... + 12 dB 600 V
10 V + 20 dB 0 ... + 22 dB 600 V
10 M / /50 pF
30 V +30 dB +10 ... + 32 dB 600 V
100 V +40 dB +20 ... + 42 dB 600 V
300 V +50 dB +30 ... + 52 dB 600 V
600 V +60 dB +40 ... + 62 dB 600 V
1)
T he voltage measuring ranges 100 mV .... 10 V can also be used for current measurements
as shown in the following table (e.g. reverse currents or leak currents). The accuracy of these
measuring ranges then corresponds to class 5.
Frequency range on ~: 15 ... 100 Hz
Overload protection same as on the voltage measuring ranges.
2)
Measuring value = indicated value + constant ; 0 dB 0.775 V, i.e. 1 mW at 600
3)
protected by PTC thermistor; cooling time of thermistor before the start of next measurement: grant at least 2 minutes.
3)
Range Current at Full Scale Value R
i
100 mV 10 nA
300 mV 30 nA
1 V 100 nA
3 V 300 nA
10 M
10 V 1 μA
30 V 3 μA
Current Input Resistance R
10 μA 10,0 k 100 mV 600 V
100 μA 1,0 k 100 mV 600 V
1 mA 100,0 100 mV 600 V
10 mA 10,0 100 mV 600 V
100 mA 1,4 140 mV 600 V
1 A 480 m 0,480 V 600 V
1 0 A 26 m 260 mV 600 V
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i
Voltage Drop U
Overload Protection up to
3)
3)
3)
3)
3)
3)
4)
Resistance
Range
x1 1 ... 2 k 45,6 100 mV 2,2 mA 600 V
x10 10 ... 20 k 456,0 100 mV 0,22 mA 600 V
x 100 100 ... 200 k 4,56 k 100 mV 22 μA 600 V
k x1 1k ... 2 M 45,6 k 1 V 22 μA 600 V
k x10 10k ... 20 M 456,0 k 1 V 2,2 μA 600 V
3)
Protected by G type melting fuse link FF 1.6A/600V AC in conjunction
with protective power diodes.
4)
Fuse protection FF 16A/600V AC; 10 A: max. 10 min.
Read-out Range
Mid-Scale
Value
(R
OpenCircuit
Voltage
)
i
Short-
Overload
Circuit
Protection
Current
U
0
up to
I
K
Accuracy at reference conditions per IEC 60051/EN 60051
Class 1.5 for DC variables; class 2.5 for AC variables and class 1.5 for
resistance (inherent deviation with reference to the scale length of
69 mm) corresponding to maximum 10% inherent deviation from the
measured value in the range of the bolder drawn scale arc.
Reference Conditions
Ambient
temperature +23 C
2 K
Relative humidity 40 ... 60%
Position of use Device and scale horizontal
1
Frequency of
measured variable 45 ... 65 Hz
Waveshape of
measured variable
Battery voltage 7.5 V
si
nusoidal
0.1 V
for other influencing
variables per IEC 60051/EN 60 051
3)
3)
3)
3)
3)
The multimeter is calibrated in rms values. It operates with full-wave
rectification which valuates the arithmetic mean value.
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Influencing variables and rated operating ranges
Temperature +5 ... +23 ... +35 C
Limit temperatures for accuracy +5 ... +35 C
for operation 0 ... + 40 C
for storage – 25 ... +65 C
(without battery)
Position additional influence effect max. 1% of scale
length when the scale is inclined to the horizontal
between 0 and
120
Frequency additional influence effect
max.
10% of full scale value in the ranges
100 mV; 3 V ... 600 V: 15 Hz ... 1 kHz
10 μA ... 10 A: 15 Hz ... 1 kHz
300 mV; 1 V: 15 Hz ... 200 Hz
Auxiliary voltage No additional influence effect; the upper range
value for each measuring range must be set via
the potentiometer in the case of resistance mea-
surements.
Series-mode interference
voltage attenuation on V
> 60 dB with AC 50 Hz
on V
~ > 120 dB with DC
Common-mode
voltage attenuation > 120 dB with DC and 50 Hz AC
Composite voltages and
composite currents see chapter 4.5
Other influencing
variables per IEC 60051/EN 60051
Power Supply
Battery nominal voltage 9 V ;
9 V flat cell battery per IEC 6LR61 (6F22),
alkaline-manganese or NiCd/NiMH-Akku.
Service life with alkaline-manganese cell: approx. 1000 hours
with NiCd storage battery: approx. 200 hours
in the
x 1 range: ¼ of the entire service life
Battery test indication must be within battery test zone
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Fuse
Range up to 1 A and FF 1.6A/600V, 6 mm x 32 mm protects the
10 μA ... 1 A and
x1 ... k x10 ranges in
conjunction with the power diodes
Switching capacity:
50 kA with 600 V~ (one half wave on ohmic load) overload limit of the
melting fuse in conjunction with the power diodes: max. 200 A with
600 V (one half wave on ohmic load)
10 A range FF 16A/600V AC, 6 mm x 32 mm,
Switching capacity 50 kA at 600 V~
Elektrical Safety
Protection class I I per IEC/EN 61010-1:2001/VDE 0411-
1:2002
Measuring category II II I
Operating voltage 600 V 300 V
Pollution degree
2
Test voltage 3.5 kV~ per IEC/EN 61010-1:2001/
VDE 0411-1:2002
Electromagnetic Compatibility (EMC)
Interference emission
Interference immunity
EN 61326-1:2006 Klasse B
EN 61326-1:2006
EN 61326-2-1:2006
Mechanical Design
Protection type Housing: IP 40, connection sockets: IP 20
Dimensions 146 x 118 x 44 mm (in closed condition)
Weight approx. 0.45 kg without battery
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6 Maintenance
Attention!
!
Attention!
!
Attention!
!
Disconnect the instrument completely from the measuring circuit before opening the battery compartment to replace the
battery!
6.1 Battery
The state of the battery should be checked from time to time. A discharged or deteriorating battery shall not be left in the battery compartment. When a check of the battery voltage according to
chapter 4.2 shows that the pointer is beyond the zone for the battery
check then the battery needs to be replaced as described in
chapter 4.2
6.2 Melting Fuse
The instrument is equipped with two fuses.
.
Install a leak-proof battery only. Use a 9 V flat cell battery
according to IEC 6 F 22. Instead of an alkaline-manganese cell
a NiCd/NiMH storage battery can be used as well.
Disconnect the instrument completely from the measuring circuit
before opening the bottom part of the housing to replace the fuse!
Upon tripping of the fuse, eliminate the cause of overload
before putting the instrument back to serviceable condition!
Make absolutely sure that only the specified fuse is used, see
chapter 5 „Technical Data“!
Using a fuse with different tripping characteristics, different
nominal current or different switching capacity involves hazards for the operator and for protective diodes, resistances or
other components. The use of mended fuses or short-circuiting of the fuse holder is not permitted.
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Melting Fuse for the mA Range (up to 1 A)
1,6 A
16 A
Housing bottom, to close press here first
Screws covered by rubber bases
The built-in FF 1.6A/600V AC melting fuse for the measuring circuit up
to 1 A/can be checked for continuity on the resistance measuring
ranges, preferrably on the x 1 range. With the measuring sockets
„A|“ and „“ shorted, the resistance of the fuse must be indicated to
be approximately 0.5 . If the fuse is defective, is indicated.
The melting fuse blows when
one of the current measuring
ranges (except for the range
10 A ) or one of the resistance measuring ranges
x 1 ... k x 10 and higher
is overloaded unpermissibly
high. The fuse is located
immediately behind the „A |“
connection terminal. Replace
the fuse as follows:
Ð Disconnect the instrument
from the measuring circuit!
Ð Open the bottom part with the housing in closed condition, if possi-
ble. To this end, remove the rubber bases and pull out the srews.
Ð Remove the defective fuse and replace it with a new one.
Ð Close the housing again by pressing it shut at the bottom first.
Ð After retightening the srews, fix the rubber bases again with a little
bit of adhesive.
Melting Fuse for the 10 A Range
The built-in FF 16A/600V AC fuse for the 10 A measuring circuit can
only be checked for continuity when removed from the device.
Access to the fuse is described above.
Ð Remove the fuse from the fuse holder.
Ð It can be checked for continuity in the x 1 range. is indicated if
the fuse is defective.
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6.3 Housing
Pb Cd Hg
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.
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.
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.
7 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.
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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.
We are pleased to perform DKD or factory calibrations for you in our
calibration laboratory. Please visit our website at
FAQs Calibration questions and answers).
By having your measuring instrument calibrated regularly, you fulfill the
requirements of a quality management system per DIN EN ISO 9001.
8 Accessories
8.1 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 for your measuring
instrument are listed at the following web address along with photo,
order number, description and, depending upon the scope of the
respective accessory, data sheet and operating instructions:
Portable MultimetersAccessories).
Products Measuring Technology –
* Verification of specifications or adjustment services are not part of the calibration. For prod-
ucts from our factory, however, any necessary adjustment is frequently performed and the
observance of the relevant specification is confirmed.
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8.2 Technical Data for Measurement Cables
Attention!
!
(scope of delivery: KS17-2 safety cable set)
Electrical Safety
Maximum Rated Voltage
Measuring Category
Maximum Rated Current 1 A 1 A 16 A
with safety cap applied —
without safety cap applied — —
Ambient Conditions (EN 61010-031)
Temperature –20 C ... + 50 C
Relative humidity 50 to 80%
Contamination level
2
Application KS17-2
Please observe the maximum values of the electrical safety of the
device.
In conformity with standard DIN EN 61010-031, measurements in an environment according to measuring category III
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).
600 V 1000 V
1000 V
CAT IV CAT I II CAT II
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9 Repair and Replacement Parts Service
Calibration Center and Rental Instrument Service
When you need service, please contact:
GMC-I Service GmbH
Service-Center
This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.
10 Product Support
When you need support, please contact:
GMC-I Messtechnik GmbH
Product Support Hotline
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