User manual

GMC-I Messtechnik GmbH 15
Please observe the specified operating conditions per IEC/EN 61010-2-32
regarding measurement category, etc. for the applied current sensor.
Additional error caused by the current sensor must be taken into consideration.
7.2 RPM Measurement at combustion engines
RPM is measured by acquiring pulses. The number of measurable pulses per
revolution varies depending upon the type of engine (2 or 4 stroke).
➭ Set the rotary switch to “ ”.
➭ Press the multifunction key (
FUNC ) repeatedly until unit of measure Upm1
(RPM measurement at 2 stroke engines: 1 pulse per revolution) or Upm2 (RPM
measurement at 4 stroke engines: 1 pulse for 2 revolutions)
is briefly displayed.
The measured value then appears, for example “244.3
Upm ”.
M
I(A)
V/~
* for short-circuited measuring cables: residual value 1 ... 70 d at zero point due to TRMS converter
Current sensor
transformer ratio
max. measuring range
Measuring ranges
available in the multimeter
A A~ *
1/ 1 V / A
depending on the applied
current sensor
0 ... 300.00 mA/3.000 A/30.00 A
1 / 10 V / A 0 ... 3.0000 A/30.000 A/300.00 A
1 / 100 V / A 0 ... 30.000 A/300.00 A/3.0000 kA
1 / 1000 V / A 0 ... 300.00 A/3.0000 kA/30.000 kA