Measurement Preparation - Benning MM 2 Manuel De Instrucciones

200 mA
20 A
7.4 Alternating current ranges
The measurement value is arrived at by average sensing and is displayed as
the RMS value.
Overload protection:
- 1 A (500 V) fast blow fuse on µA/ mA input terminal
- 16 A (500 V) fast blow fuse on 20 A input terminal
Current measurements in the 20 A range must last for 30 seconds maximum
followed by a 3 minute break, 10 A continous.
Range
200 µA
2 mA
20 mA
200 mA
20 A
7.5 Resistance ranges
Overload protection for resistance measurements: 500 V
Range Resolution
200 Ω 0,1 Ω
2 kΩ 1 Ω
20 kΩ 10 Ω
200 kΩ 100 Ω
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,
08/ 2008
100 µA ± (1,0 % of reading + 2 digits)
10 mA ± (2,0 % of reading + 3 digits)
Accuracy in 50 Hz - 400 Hz
Resolution
0,1 µA ± (1,5 % of reading + 3 digits)
1 µA ± (1,5 % of reading + 3 digits)
10 µA ± (1,5 % of reading + 3 digits)
100 µA ± (1,5 % of reading + 3 digits)
10 mA ± (2,5 % of reading + 5 digits)
± (0,8 % of reading + 4 digits)
± (0,8 % of reading + 2 digits)
± (0,8 % of reading + 2 digits)
± (0,8 % of reading + 2 digits)
± (0,8 % of reading + 2 digits)
± (2,0 % of reading + 5 digits)
1 mV ± (1,5 % of reading + 5 digits)
BENNING MM 2
frequency range
Accuracy
.
rms
Accuracy
, 
900 mV max.
900 mV max.
Burden voltage
600 mV
600 mV
600 mV
900 mV
900 mV
.
rms
Maximum
test current circuit voltage
2,5 mA
200 µA
40 µA
4 µA
400 nA
40 nA
Maximum test Max. open circuit
current
1,5 mA

max.
eff
max.
eff
max.
eff
max.
eff
max.
eff
Max. open
3,2 V
0,5 V
0,5 V
0,5 V
0,5 V
0,5 V
voltage
3,2 V
12