Operation Manual

09/ 2013 BENNING MM 1 11
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7.1 Direct voltage ranges
The input impedance is 10 MΩ.
Range Resolution Accuracy Overload protection
320 mV 100 µV ± (0,5 % of reading + 2 digits) 600 V DC/ AC
3,2 V 1 mV ± (0,5 % of reading + 2 digits) 600 V DC/ AC
32 V 10 mV ± (0,5 % of reading + 2 digits) 600 V DC/ AC
320 V 100 mV ± (0,5 % of reading + 2 digits) 600 V DC/ AC
600 V 1 V ± (0,5 % of reading + 2 digits) 600 V DC/ AC
7.2 Alternating voltage ranges
The input impedance is 10 M parallel 100pF. The measurement value is
arrived at by average sensing and is displayed as the RMS value.
Range Resolution
Accuracy in 50 Hz - 400 Hz
frequency range
Overload protection
3,2 V 1 mV
± (1,5 % of reading + 5 digits)
in 40 Hz - 300 Hz frequency range for 3 V-range
600 V DC/ AC
32 V 10 mV ± (1,5 % of reading + 5 digits) 600 V DC/ AC
320 V 100 mV ± (1,5 % of reading + 5 digits) 600 V DC/ AC
600 V 1 V ± (1,5 % of reading + 5 digits) 600 V DC/ AC
7.3 Direct current ranges
Range Resolution Accuracy Burden voltage
Overload
protection
320 µA 0,1 µA
± (1,0 % of reading
+ 2 digits) or 3200 µA
< 3 mV/ µA 600 V DC/ AC
3200 µA 1 µA
± (1,0 % of reading
+ 2 digits) or 3200 µA
< 3 mV/ µA 600 V DC/ AC
7.4 Resistance ranges
Overload protection for resistance measurements: 600 V
rms
.
Range Resolution Accuracy Max. open circuit voltage
320 Ω 0,1 Ω ± (1,0 % of reading + 4 digits) 1,3 V
3,2 kΩ 1 Ω ± (0,8 % of reading + 2 digits) 1,3 V
32 kΩ 10 Ω ± (0,8 % of reading + 2 digits) 1,3 V
320 kΩ 100 Ω ± (0,8 % of reading + 2 digits) 1,3 V
3,2 MΩ 1 kΩ ± (0,8 % of reading + 2 digits) 1,3 V
32 MΩ 10 kΩ ± (0,8 % of reading + 5 digits) 1,3 V
7.5 Diode Testing
The accuracy indicated below is valid in the range of 0.4 V to 0.9 V.
Overload protection for diode testing: 600 V
rms
/ 600 V DC.
Range Resolution Accuracy
Maximum
current
Max. open circuit
voltage
1 mV ± (1,5 % of reading + 5 digits) 1,5 mA 3,3 V
7.6 Continuity Testing
The built-in buzzer sounds if the resistance R falls below 20 Ω.
8. Measuring with BENNING MM 1
8.1 Measurement preparation
The BENNING MM 1 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 test leads. The
safety test leads provided with the BENNING MM 1 correspond specifically
to the rated voltage and current of the BENNING MM 1.
- Inspect the test leads for damaged insulation. If the insulation is damaged,
the test leads should be discarded immediately.