Ambient Conditions; Electrical Specifications - Benning CM 9-1 Bedienungsanleitung

5.1.10 The BENNING CM 9-1 is switched on and off with the rotary switch 5 .
Shutdown position "OFF".
5.1.11 The BENNING CM 9-1 switches off automatically after approx. 30 min-
utes (APO, Auto-Power-Off is activated, if the symbol
the display 9 ). It switches on again, if the rotary switch 5 is switched
on again from switch position „OFF". Automatic switch-off can be deac-
tivated by pressing the HOLD key and by simultaneously switching on
the BENNING CM 9-1 from the switching position "OFF". The symbol
disappears from the display 9 .
5.1.12 The BENNING CM 9-1 is supplied by two 1.5 V batteries (IEC LR03/
AAA/ micro).
5.1.13 If the battery voltage drops below the specified operating voltage of the
BENNING CM 9-1, then a battery symbol
9 .
5.1.14 The battery life depends on the measuring function used and is approxi-
mately 40 hours to 60 hours without using the acoustic continuity test
and background lighting (alkaline battery).
5.1.15 Temperature coefficient of the measured value: 0.1 x (stated measuring
accuracy)/ °C < 18 °C or > 28 °C, related to the value for the reference
temperature of 23 °C
5.1.16 Dimensions of unit (length x width x height) = 210 x 76 x 33,5 mm.
Weight of unit: 296 g (incl. batteries)
5.1.17 The safety measuring leads and measurement tips supplied are espe-
cially suited to the rated voltage of the BENNING CM 9-1. The measur-
ing tips can be protected by caps.
5.1.18 Widest prong opening: 23 mm
6.

Ambient conditions

- The BENNING CM 9-1 is intended for making measurements in dry environ-
ment.
- Maximum barometric elevation for making measurements: 2000 m,
- Overvoltage category: IEC 60664/ IEC 61010 → 300 V category IV; 600 V
category III
- Operating class of current sensor: EN 61557-13, class 2, ≤ 30 A/m, @ In:
3.5 mA to 600 mA, fn: 40 Hz to 1 kHz
- Contamination class: 2 (EN 61010-1),
- 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 protec-
tion against water, (0 - second index).
- Operating temperature and relative humidity:
For operating temperatures from 0 °C to 40 °C: relative air humidity lower
than 80 %, non-condensing.
- Storage temperature: The BENNING CM 9-1 can be stored at temperatures
between - 10 °C and + 60 °C, at a relative air humidity lower than 80 %
without batteries.
7.

Electrical specifications

Note: The measuring precision is specified as the sum of
- a relative fraction of the measured value and
- a number of digits (counting steps of the least significant digit).
This specified measuring precision is valid for temperatures in the range from
23 °C ± 5 °C and relative humidity less than 80 %. The stated accuracy is speci-
fied for 1 % to 100 % of the final measuring range value.
7.1 DC voltage ranges
The input resistance is ≥ 2 MΩ.
Measuring range
60.00 V
60.0 V - 600.0 V
7.2 AC voltage range
The measured value is obtained and displayed as real r.m.s. value (True RMS,
AC coupling). Its calibration is adapted to sinusoidal curves. In case of devia-
tions from this curve shape, the accuracy of the displayed value decreases.
Crest factor < 2.0 up to 100 % of each final measuring range value
Crest factor < 4.0 up to 50 % of each final measuring range value
The input resistance is ≥ 2 MΩ.
10/ 2019
Resolution
0.01 V
0.1 V
BENNING CM 9-1
Measurement accuracy
± (1.0 % + 4 digits)
± (1.0 % + 4 digits)

is shown on
appears in the display
Overload protection
600 V AC/DC
600 V AC/DC
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