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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:
Continuity testing with buzzer
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:
Capacity measurement
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:
Frequency measurement
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:
Temperature measurement
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
BENNING MM 7
11/ 2008
; observe polarity.
the
on
18
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