Ambient Conditions; Electrical Data; Continuity Test - Benning CM 1 Notice D'emploi

5.1.6 Temperature coefficient of measurement value: 0.2 x (stated
measurement accuracy) °C < 18 °C or > 28 °C with reference to the
value at the reference temperature of 23 °C.
5.1.7 The BENNING CM 1 is supplied by a 9 V compound battery (IEC 6 LR
61).
5.1.8 When the battery voltage drops under the intended operating voltage of
the BENNING CM 1, a battery symbol appears in the display.
5.1.9 The service life of the battery is approx. 250 hours (alkali battery).
5.1.10 Dimensions of unit (length x width x height) = 188 x 67 x 41 mm.
Weight of unit: 265 g
5.1.11 The safety measuring wire and measurement tips are of the 2 mm plug-
in type. The connected safety measuring wires with measurement tips
correspond to the rated voltage of the BENNING CM 1. The measuring
tips can be protected by caps and can be clipped onto the underside of
the unit for easier transport and for certain measuring tasks.
5.1.12 Fork opening 12.5 mm
5.1.13 Interior opening: 16 mm
6.

Ambient conditions

- The BENNING CM 1 is designed only for measuring in dry surroundings.
- Maximum barometric height during measurement: 2000 m
- Overvoltage category/ set-up category: IEC 664/ IEC 1010 600 V category III.
- Degree of contamination: 2
- Protection Class: IP 30 (DIN VDE 0470-1 IEC/ EN 60529)
IP 30 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm, (3 - first index). No
protection against water, (0 - second index).
- Operating temperature and relative humidity:
At operating temperature of 0 °C to 30 °C: relative humidity under 80 %
At operating temperature of 30 °C to 40 °C: relative humidity under 75 %
At operating temperature of 40 °C to 50 °C: relative humidity under 45 %
- Storage temperature:
The BENNING CM 1 can be stored at temperatures of - 20 °C to + 60 °C, and
max. relative humidity of 80 %. The battery must be removed from the unit.
7.

Electrical data

Note: The measurement accuracy is stated as the sum of
- a relative proportion of the measurement value and
- a number of digits (i.e. numerical steps of the last place).
This measurement accuracy applies for a temperature of 23 °C ± 5 °C and a
maximum relative humidity of 80 %.
7.1 DC range
The input resistance is 1 MΩ.
Measuring range Resolution
600 V
7.2 AC range
The input resistance is 1 MΩ parallel 100 pF. The measurement reading is
obtained by rectification of average reading and displayed as actual value.
Measuring range
600 V
7.3 Resistance range
No-load voltage approx. 3 V, max. test current 0.1 mA
Measuring range
2000 Ω

7.4 Continuity test

The built-in buzzer sounds when resistance is less than 25 Ω - 400 Ω.
02/ 2006
Measurement accuracy
1 V ± (1,0 % of reading + 2 digit)
Resolution Measurement accuracy
± (1,5 % of reading + 3 digit)
1 V
in frequency range 40 Hz - 500 Hz
Resolution
1 Ω ± (1,0 % of reading + 2 digit)
BENNING CM 1
Measurement accuracy

Overload protection
600 V
eff
600 DC voltage
Overload protection
600 V
eff
600 DC voltage
Overload protection
600 V
eff
600 DC voltage
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