Capacitance Measurement; Maintenance; Securing The Unit - PEWA Benning MM7 Instrucciones De Servicio

BENNING MM 7.
- Connect the red safety test lead to the socket  for V, Ω, Hz, ºC, ºF on 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
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 on the
BENNING MM 7.
- Contact the discharged capacitor with the safety test leads observing
correct 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
measurement 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 ; observe polarity.
- 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
conditions, and
- if the unit has been subjected to rough handling during transport.
10/ 2004
Continuity testing with buzzer
Capacity measurement
Frequency measurement
Temperature measurement
BENNING MM 7

the BENNING
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