Voltage Measurement; Current Measurement - Benning MM 2 Mode D'emploi

2 MΩ 1 kΩ
20 MΩ 10 kΩ
7.6 Continuity and Diode Testing
The accuracy indicated below is valid in the range of 0.4 V to 0.9 V.
Overload protection for diode testing: 500 V
The built-in buzzer sounds if the resistance R falls below 50 W.
Range Resolution
8. Measuring with BENNING MM 2
8.1 Measurement preparation
The BENNING MM 2 must be used and stored only at the indicated storage and
working temperatures, avoid exposure to continuous sunlight.
- Check the rated voltage and current indications on the safety test leads.
The safety test leads provided with the BENNING MM 2 correspond specifi-
cally to the rated voltage and current of the BENNING MM 2.
- Inspect the test leads for damaged insulation. If the insulation is damaged,
the test leads should be discarded immediately.
- Check test lead continuity. If the conductor in the test lead is damaged, the
leads should be discarded immediately.
- Remove test leads from circuit to be measured before turning the rotary
switch  to select another function.
- If the BENNING MM 2 is used near strong noise generating sources, the
display may become unstable and measurement errors may arise.
8.2 Voltage and current measurement

To avoid electrical shock, observe the maximum rated voltage
to earth ground!
The maximum rated voltage that should be applied between any of the following
terminals of the BENNING MM 2 and earth ground is 600 V.
- COM terminal 
- Input terminal for V, Ω,
- Input terminal for µA/ mA range 
- Input terminal for 20 A range 
Electrical hazard!
Maximum permissible circuit voltage for current measurement

is 500 V! If a safety fuse blows at a voltage above 500 V the
BENNING MM 2 could be damaged. A damaged tester presents
an electrical shock hazard to the user!
8.2.1

Voltage measurement

- Select the appropriate range and voltage type with the rotary switch  of
the BENNING MM 2.
- Connect the black safety test lead to the COM-terminal  of the
BENNING MM 2.
- Connect the red safety test lead to the input terminal for V, Ω,
BENNING MM 2.
- Connect the safety test leads to the circuit measurement points and read
the measured value on the digital display  of the BENNING MM 2.
see Figure 2:
see Figure 3:
8.2.2

Current measurement

- Select the appropriate range and current type with the rotary switch  of
the BENNING MM 2.
- Connect the black safety test lead to the COM-terminal  of the
BENNING MM 2.
- Connect the red safety test lead to the input terminal for the µA/ mA range
 for currents up to 200 mA, or to the input terminal for the 20 A range 
for currents between 200 mA and 20 A of the BENNING MM 2.
- Connect the safety test leads to the circuit measurement points and read
the measured value on the digital display  of the BENNING MM 2.
see Figure 4:
see Figure 5:
05/ 2019
± (0,8 % of reading + 2 digits)
± (2,0 % of reading + 5 digits)
1 mV ± (1,5 % of reading + 5 digits)
Direct voltage measurement
Alternating voltage measurement
DC current measurement
AC current measurement
BENNING MM 2
.
rms
Accuracy
, 
400 nA
40 nA
Maximum test Max. open circuit
current
1,5 mA

0,5 V
0,5 V
voltage
3,2 V
,  of the
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