11/ 2008
BENNING CM 9
10
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. Environment 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/ Siting 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 temperature 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 temperature from 41 °C to 50 °C: relative humidity less than 45 %
- Storage temperature: The BENNING CM 9 can be stored at any tempera-
ture in the range from - 20 °C to + 60 °C (relative humidity from 0 to 80 %).
The battery should be taken out of 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 in the range from
18 °C to 28 °C and relative humidity less than 80 %.
7.1 Alternating current ranges, lowpass filter deactivated
Measuring
range
Resolution
Meas. precision
*1
within
the frequency range 50 Hz - 60 Hz
Overload
protection
6 mA
0.001 mA
0…50 A
± (1 % of the measuring value + 3 digits)
50…60 A
± (5 % of the measuring value + 6 digits)
60...100 A
± (8 % of the measuring value + 6 digits)
within the frequency range 61 Hz - 400 Hz
0...30 A
additional
(2 % of the measuring value + 6 digits)
30...100 A
additional (30 % of the measuring value + 6 digits)
300 V
eff
60 mA
0.01 mA
600 mA
0.1 mA
6 A
0.001 A
60 A
0.01 A
100 A
0.1 A
AutoRange miscellaneous
*1
The measured value is obtained by mean value rectification and displayed as
r.m.s. value. The measuring accuracy is specified for a sinusoidal curve.
The stated precision is specified for conductors that are centrally clamped by the
current probe
1
(see Fig. 2 - 7). For conductors that are not centrally clamped,
an additional error of 1 % of the display value needs to be taken into account.
Influence of a magnetic field of parallel lines: 0.002 % typical value.
7.2 Alternating current ranges, lowpass filter activated
Measuring range Resolution
Meas. precision
*1
within
the frequency range 50 Hz - 60 Hz
Overload
protection
6 mA
100 mV/ mA
0…50 A
± (2 % of the measuring value + 6 digits)
50…60 A
± (6 % of the measuring value + 8 digits)
60...100 A
± (9 % of the measuring value + 8 digits)
300 V
eff
60 mA
10 mV/ mA
600 mA
1 mV/ mA
6 A
100 mV/ A
60 A
10 mV/ A
100 A
1 mV/ A
AutoRange miscellaneous
*1
The measured value is obtained by mean value rectification and displayed
