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BENNING CM 12
from the measuring points and secured to prevent it from being used again.
9.2 Cleaning
Clean the outside of the unit with a clean dry cloth. (Exception: any type of special
cleaning cloth). Never use solvents or abrasives to clean the testing unit. Ensure
that the battery compartment and the battery contacts have not been contami
-
nated by electrolyte leakage.
If any electrolyte or white deposits are seen near to the battery or in the battery
compartment, remove them with a dry cloth, too.
9.3 Battery replacement
Before opening the BENNING CM 12, make sure that the device
is free of voltage! Electrical danger!
The BENNING CM 12 is powered by six 1.5 V micro batteries (IEC LR03/ type
AAA). Battery replacement (see figure 11) is required as soon as all segments
of the battery symbol
L
have disappeared and the battery symbol is flashing.
Proceed as follows to replace the batteries:
- First remove the safety measuring leads from the measurement circuit.
- Remove the safety measuring leads from the BENNING CM 12.
- Turn the rotating switch
5
to “
OFF
”.
- Put the BENNING CM 12 face down and unscrew the four screws of the bat
-
tery compartment cover.
- Lift the battery compartment cover off the bottom part.
- Remove the discharged batteries from the battery compartment.
- Insert the new batteries into the battery compartment at the provided places
(please observe correct polarity of the batteries).
- Lock the battery compartment cover into place on the bottom part and tighten
the screws.
See figure 11: Battery replacement
Remember the environment! Do not dispose of used batteries
with domestic waste. Dispose of them at a battery-collection
point or as toxic waste. Your local authority will give you the
information you need.
9.5 Calibration
Benning guarantees compliance with the technical and accuracy specifications
stated in the operating manual for the first 12 months after the delivery date.
To maintain the specified accuracy of the measurement results, the instrument
must be recalibrated at regular intervals by our factory service. We recommend
a recalibration interval of one year. Send the multimeter to the following address:
Benning Elektrotechnik & Elektronik GmbH & CO. KG
Service Centre
Robert-Bosch-Str. 20
D - 46397 Bocholt
10. Technical data of the measuring accessories
- Standard: EN 61010-031,
- Maximum rated voltage to earth (
) and measuring category:
With push-on caps: 1000 V CAT III, 600 V CAT IV,
Without push-on caps: 1000 V CAT II,
- Maximum rated current: 10 A,
- Protective class II (
), continuous double or reinforced insulation,
- Contamination class: 2,
- Length: 1.4 m, AWG 18,
- Environmental conditions:
Maximum barometric elevation for making measurements: 2000 m,
Temperatures: 0 °C to + 50 °C, humidity 50 % to 80 %
- Only use the measuring leads if in perfect and clean condition as well as
according to this manual, since the protection provided could otherwise be
impaired.
- Throw the measuring lead out if the insulation is damaged or if there is a
break in the lead/ plug.
- Do not touch the bare contact tips of the measuring lead. Only grab the area
appropriate for hands!
- Insert the angled terminals in the testing or measuring device.
