Capacitance Measurement; Maintenance; Securing The Unit - Benning MM 7 Bedienungsanleitung

the BENNING MM 7.
- Contact the measuring points with the safety test leads. If the measuring
lead resistance between the COM socket  and the socket  for V, Ω, Hz,
ºC, ºF, on the BENNING MM 7 is lower than 30 Ω the built-in buzzer is
activated.
See fig. 8:

8.6 Capacitance measurement

Discharge capacitors fully before measurement! Never apply

voltage to the sockets for capacitance measurement as this
may cause irreparable damage to the unit. A damaged unit may
represent an electrical hazard!
- With the rotating switch , select the desired function on
BENNING MM 7 Determine the polarity of the capacitor and discharge it
completely.
- Connect the black safety test lead to the COM socket  on the
BENNING MM 7.
- Connect the red safety test lead to the socket  for V, Ω, Hz, ºC, ºF,
the BENNING MM 7.
- Contact the discharged capacitor with the safety test leads observing cor-
rect polarity. Read the measurement value on the digital display  of the
BENNING MM 7.
See fig. 9:
8.7 Frequency measurement
- With the rotating switch , select the desired function (Hz) on the
BENNING MM 7.
- Connect the black safety test lead to the COM socket  on the
BENNING MM 7.
- Connect the red safety test lead to the socket  for V, Ω, Hz, ºC, ºF,
on the BENNING MM 7. Remember the minimum sensitivity for frequency
measurements using the BENNING MM 7!
- Contact the measuring points with the safety test leads and read the meas-
urement result on the digital display  on the BENNING MM 7.
See fig. 10:
8.8 Temperature measurement
- With the rotating switch , select the desired function (°C or °F) on the
BENNING MM 7
- Connect the adapter for the temperature sensor correctly to the socket
COM  and V, Ω, Hz, °C, °F,
- Connect the temperature sensor (type K) to the adapter.
- Place the contact point (end of the sensor lead) on the point to be
measured. Read the measurement value on the digital display  of the
BENNING MM 7.
See fig. 11:
9.

Maintenance


Before opening the BENNING MM 7, ensure that it is not
connected to a source of voltage! Electrical hazard!
Any work required on the BENNING MM 7 when it is under voltage must be done
only by a qualified electrician. Special steps must be taken to prevent accidents.
Before opening the BENNING MM 7, remove it from all sources of voltage as follows:
- First remove both safety test leads from the measurement points.
- Remove both safety test leads from the BENNING MM 7
- Turn the rotating switch  to "OFF".

9.1 Securing the unit

Under certain circumstances, the safety of the BENNING MM 7 can no longer
be guaranteed. This may be the case if:
- there are visible signs of damage on the unit,
- errors occur in measurements,
- the unit has been stored for a long period of time under the wrong condi-
tions, and
- if the unit has been subjected to rough handling during transport.
In these cases, the BENNING MM 7 must be switched off immediately, removed
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
11/ 2008
Continuity testing with buzzer
Capacity measurement
Frequency measurement
Temperature measurement
BENNING MM 7
; observe polarity.

the
on
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