Ambient Conditions; Electrical Specifications - Benning CM 9 Instrucciones De Servicio

5.1.14 If the battery voltage drops below the specified operating voltage of
the BENNING CM 9, then a battery symbol appears in the display. To
prevent wrong measured values, batteries have to be replaced immedi-
ately in this case.
5.1.15 The life span of a battery amounts to approx. 60 hours (alkali battery).
5.1.16 Appliance dimensions: (L x W x H) = 205 x 75 x 40 mm
Appliance weight: 270 g
5.1.17 Largest opening of pliers: 43 mm
5.1.18 Largest cable diameter: 40 mm
6.

Ambient conditions

- The BENNING CM 9 is intended for making measurements in dry environ-
ment.
- Maximum barometric elevation for making measurements: 2000 m,
- Over voltage category/ setting category: IEC 60664-1/ IEC 61010-1 (2001)
→ 300 V category III,
- Contamination class: 2,
- EMC: EN 61326-1
- Protection class: IP 40 (DIN VDE 0470-1 IEC/ EN 60529)
IP 40 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 1 mm, (4 - first index). No protection
against water, (0 - second index).
- Operating temperature and relative humidity:
For operating temperatures from 0 °C to 30 °C: relative humidity less than 80 %
For operating temperatures from 31 °C to 40 °C: relative humidity less than 75 %
For operating temperatures from 41 °C to 50 °C: relative humidity less than 45 %
- Storage temperature: The BENNING CM 9 can be stored at any tempera-
ture within the range of - 20 °C to + 60 °C (relative humidity from 0 to 80 %).
The battery should be removed from the instrument for storage.
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 within the range of
18 °C to 28 °C and relative humidity lower than 80 %.
7.1 Alternating current ranges
low­pass filter deactivated
Measuring
Resolution
range
6 mA *2
0.001 mA
60 mA 0.01 mA
600 mA
6 A 0.001 A
60 A
100 A
AutoRange miscellaneous
low­pass filter activated
Measuring range Resolution
6 mA *2
100 mV/ mA
60 mA
600 mA
6 A
60 A
100 A
AutoRange miscellaneous
*1 The measuring value is gained and indicated as effective value (True RMS,
AC coupling).
In case of non-sinusoidal curves, the indicating value becomes inaccurate.
Thus, an additional error occurs for the following crest factors:
crest factor from 1.0 to 2.0 additional error + 6 %
06/ 2016
± (1 % of the measuring value + 8 digits)
0.1 mA
± (2 % of the measuring value + 10 digits)
± (10 % of the measuring value + 10 digits)
0.01 A
within the frequency range 61 Hz - 400 Hz
0.1 A
0...10 A (2 % of the measuring value + 11 digits)
10...50 A (10 % of the measuring value + 11 digits)
50...100 A (35 % of the measuring value + 11 digits)
10 mV/ mA
± (2 % of the measuring value + 8 digits)
1 mV/ mA
100 mV/ A
± (3 % of the measuring value + 10 digits)
10 mV/ A
± (12 % of the measuring value + 10 digits)
1 mV/ A
BENNING CM 9
Meas. precision *1 within
the frequency range 50 Hz - 60 Hz
0...10 A
10...50 A
50...100 A
Meas. precision *1 within
the frequency range 50 Hz - 60 Hz
0...10 A
10...50 A
50...100 A

Overload
protection
300 V
eff
Overload
protection
300 V
eff
10