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02/ 2018
BENNING MM P3
22
BENNING MM P3.
See figure 8:
Frequency/ pulse duty factor measurement
8.8 Pulse-Duty Factor Measurement
- Select the desired function (Hz, %) at the BENNING MM P3 by means of the
rotary switch
7
.
-
Switch over to the pulse-duty factor measurement (%) by means of the „SELECT“
key
5
of the BENNING MM P3 (press the key once).
- Bring the safety measuring leads into contact with the measuring points and read
the measured value on the digital display
of the BENNING MM P3.
See figure 8:
Frequency/ pulse duty factor measurement
9. Maintenance
Before opening the BENNING MM P3, make sure that the device is
free of voltage! Electrical danger!
Working on the opened BENNING MM P3 under voltage must be carried out by
skilled electricians with special precautions for the prevention of accidents
only!
Make sure that the BENNING MM P3 is free of voltage as described below before
opening the device:
- First, remove both safety measuring leads from the object to be measured.
- Switch the rotary switch
7
to position „OFF“.
9.1 Securing the device
Under certain circumstances, safe operation of the BENNING MM P3 might no longer
be ensured, e.g. in case of:
- visible damages of the housing and safety measuring leads,
- incorrect measuring results,
- recognizable consequences of prolonged storage under inadmissible conditions
and
- recognizable consequences of extraordinary stress due to transport.
In such cases, immediately switch off the BENNING MM P3, disconnect it from the
measuring points and secure it against further use.
9.2 Cleaning
Clean the exterior of the device with a clean dry cloth (exception: special cleaning
wipers). Do not use any solvents and/or abrasives to clean the device. Make sure that
the battery compartment and the battery contacts are not contaminated by leaking
battery electrolyte.
If there are electrolyte contamination or white deposits in the area of the battery or the
battery compartment, clean these areas as well by means of a dry cloth.
