Datasheet

3-349-117-03
4/4.10
GMC-I Messtechnik GmbH
METRAmax

3
Analog Multimeter
Applications
The METRAmax

3 analog multimeter is a cost-effective, handy
multimeter without amplifier, and includes an integrated circuit
breaker which protects the current measuring ranges. The instru-
ment is also equipped with ample overload protection in the volt-
age ranges thanks to generously dimensioned, high performance
PTC thermistors.
The instrument is equipped with 15 measuring ranges for direct
and alternating voltage, direct and alternating current, and resis-
tance measurement. The deliberately low input resistance of
approximately 1 k/V generates sufficient load during measure-
ments taken at voltage circuits to allow for the recognition of faulty
cable routing in the event of capacitive interference.
The meter has been especially developed for use in training and
the electrical trades. The often annoying task of replacing fuses is
eliminated, instrument availability is increased and operating costs
are reduced in a lasting fashion with the METRAmax

3.
Applicable Regulations and Standards
Characteristic Values
Alternating and Direct Voltage Measuring Ranges
Alternating and Direct Current Measuring Ranges
1)
current > 10 A max. 5 min
Resistance Measuring Range
2)
At a battery voltage of 1.5 V
IEC 61010-1/EN 61010-1/
VDE 0411-1
Safety requirements for electrical equipment for
measurement, control and laboratory use
EN 60529
VDE 0470 Part 1
Test instruments and test procedures,
protection provided by enclosures (IP code)
DIN EN 61326-1
VDE 0843-20-1
Electrical equipment for measurement, control and labo-
ratory use – EMC requirements –
Part 1: General requirements
Measured
Quantity
Measuring Range
Internal Resistance
Accuracy
Class
~=
U~/U=
600 V 780 k 600 k
2.5%300 V 380 k 300 k
30 V 32 k 30 k
Measured
Quantity
Measuring Range
Voltage Drop
Accuracy
Class
~=
I~/I=
15 A
1)
915 mV 900 mV
2.5%3 A 320 mV 340 mV
300 mA 140 mV 200 mV
Measured
Quantity
Measuring
Range
Measuring Range and
Middle of Scale
Max.
Meas.
Current
2)
Accuracy
Class

 x 1 1  … 30  … 3 k 50 mA
2.5% x 10 10  … 300  … 30 k 6 mA
 x 100 100  … 3 k … 300 k 0.6 mA
• Direct and alternating voltage to 600 V
• Direct and alternating current to 15 A
• Resistance from 1  to300 k
• 3 measuring ranges per measuring function
• Interrupted conductors are recognized by means
of internal resistance of approximately 1 k/V
• Excellent overload protection thanks to
protective relay and PTC thermistors