10/ 2019
BENNING CM 9-2
11
Weight of unit: 450 g (incl. batteries)
5.1.15 Widest prong opening: 40 mm
5.2 Data transmission to the smartphone/ tablet
The BENNING CM 9-2 is provided with a Bluetooth
®
Low Energy 4.0 interface
for real-time wireless transmission of measured values to an Android or IOS
device.
The “BENNING MM-CM Link” app required for this is available in the Google
Play Store and in the Apple App Store.
Google Playstore
App Store
The “BENNING MM-CM Link” app offers i.a. the following functions:
- Displaying of the measured values in real time
- Storage and sharing of measurement series as CSV file.
To activate the Bluetooth
®
interface, press the Bluetooth
®
key
4
at the BENNING
CM 9-2 (symbol “ ” flashes). As soon as a Bluetooth
®
connection is established,
the symbol “ ” is displayed permanently.
Range in open space: approx. 10 m
6. Ambient conditions
- The BENNING CM 9-2 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, valid in the 6/60/600 mA measuring
range with optimal resolution
- 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 - 10 °C to 30 °C: relative air humidity lower
than 80 %,
For operating temperatures from 31 °C to 40 °C: relative air humidity lower
than 75 %,
For operating temperatures from 41 °C to 50 °C: relative air humidity lower
than 45 %.
- Storage temperature: The BENNING CM 9-2 can be stored at temperatures
between - 20 °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 %.
7.1 AC current range
The measuring value is gained and indicated as effective value (True RMS, AC
coupling). In case of non-sinusoidal curves, the indicating value becomes inac
-
curate. Thus, an additional error occurs for the following crest factors:
crest factor from 1.0 to 2.0 additional error + 1.0 %
crest factor from 2.0 to 2.5 additional error + 2.5 %
crest factor from 2.5 to 3.0 additional error + 4.0 %
max. crest faktor:
crest faktor 1.5 @ 6000 digits
crest faktor 2.0 @ 4500 digits
crest faktor 3.0 @ 3000 digits
The stated accuracy is specified for 1 % to 100 % of the final measuring range
value and for conductors that are centrally clamped by means of the measuring
clamp
1
(see figures 2 to 7). For conductors that are not centrally clamped,
an additional error of 1 % of the display value needs to be taken into account.
Overload protection: 60 A
