Operation Manual

09/ 2013 BENNING CM 4
9
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2. Safety note
The instrument is built and tested in accordance with
DIN VDE 0411 part 1/ EN 61010-1
and has left the factory in perfectly safe technical state.
To maintain this state and ensure safe operation of the appliance tester, the user
must observe the notes and warnings given in these instructions at all times.
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The BENNING CM 4 may be used only in power circuits within
the overvoltage category III with a conductor for 600 V max.
to earth.
Only use suitable measuring leads for this. With measurements
within measurement category III, the projecting conductive
part of a contact tip of the measuring leads must not be longer
than 4 mm.
Prior to carrying out measurements within measurement
category III, the push-on caps provided with the set and
marked with CAT III and CAT IV must be pushed onto the
contact tips. The purpose of this measure is user protection.
Remember that work on electrical components of all kinds is
dangerous. Even low voltages of 30 V AC and 60 V DC may be
dangerous to human life.
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Before starting the appliance tester up, always check it as well
as all cables and wires for signs of damage.
Should it appear that safe operation of the appliance tester is no longer possible,
it should be shut down immediately and secured to prevent it being switched
on accidentally.
It may be assumed that safe operation is no longer possible:
- if the instrument or the measuring cables show visible signs of damage, or
- if the appliance tester no longer functions, or
- after long periods of storage under unfavourable conditions, or
- after being subjected to rough transport.
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In order to avoid danger,
- do not touch the bare prod tips of the measuring cables
measuring probes,
- insert the measurement lines in the appropriately
designated measuring sockets on the multimeter
3. Scope of delivery
The scope of delivery for the BENNING CM 4 comprises:
3.1 One BENNING CM 4,
3.2 One safety measuring cable, red (L = 1.4 m)
3.3 One safety measuring cable, black (L = 1.4 m)
3.4 One compact protective pouch,
3.5 Two 1.5-V-mignon-batteries fitted in the unit as original equipment,
3.6 One operating instructions manual
Parts subject to wear:
- The BENNING CM 4 is supplied by two 1.5 V mignon batteries (IEC LR 06).
- The above-mentioned safety measuring cables (tested accessories)
correspond to CAT III 1000 V and are approved for a current of 10 A.
4. Description of appliance tester
See figure 1: Appliance front face
The display and operator control elements specified in Fig. 1 are designated
as follows:
 Digital display, for the measurement value, bar graph display, overranging
display,
 Polarity indication,
 Battery status indication, appears when the battery is discharged,
 Button (yellow), display lighting,
 HOLD button , storage of the indicated measured value,
 MIN/MAX button, storage of the highest and lowest measured values ,
 Button PEAK , peak value storage,
 Rotary switch, for selecting the measurement function,
 Jack (positive
1
), for V, Ω
 COM jack, common socket for voltage, resistance, measurement, and
continuity testing,