Advertenties
All manuals and user guides at all-guides.com
CAUTION! Capacitors must be completely discharged before
attempting capacitance measurement! Never apply voltage
to the input terminals for a capacitance measurement as this
could destroy or damage the tester! A damaged tester may
present an electrical shock hazard to the user!
-
Use the rotary switch to select the appropriate range on the
BENNING MM 3.
-
Establish the polarity of the capacitor and discharge the capacitor
completely.
-
Connect the fully discharged capacitor according to its polarity to the input
terminals for capacitance measurement of the BENNING MM 3 and read
the measurement value on the digital display of the BENNING MM 3.
see Figure 9:
Capacity Testing
8.7 Frequency measurement
-
Use the rotary switch to select the appropriate range on the
BENNING MM 3.
-
Connect the black safety test lead to the COM-terminal of the
BENNING MM 3.
-
Connect the red safety test lead to the input terminal for V, Ω, and Hz of
the BENNING MM 3. Observe the voltage range of the BENNING MM 3 for
frequency measurements!
-
Connect the safety test leads to the circuit measurement points and read
the measured value on the digital display of the BENNING MM 3.
see Figure 10:
Frequency measurement
9.
Maintenance
Remove test leads and turn the power off before opening the
BENNING MM 3! Dangerous voltage!
Any work to be carried out on an opened BENNING MM 3 under voltage is
strictly reserved for qualified electrotechnical personnel who must take special
precautionary measures to avoid accidents.
This is how to ensure that the BENNING MM 3 is free from any voltage before
the instrument is opened:
-
first remove the safety test leads from measured object.
-
then remove both safety test leads from the BENNING MM 3.
-
turn the rotary switch to the "OFF" position.
9.1 Instrument safe-guarding
In certain circumstances, safety during the use of the BENNING MM 3 can no
longer be guaranteed; when for instance:
-
there is visible damage to the housing
-
measurement errors occur
-
the instrument has been subjected to prolonged storage under unfavorable
conditions and
-
the instrument has been subjected to severe transport stresses.
In such cases the BENNING MM 3 must be immediately switched off, removed
from the measurement points and secured against any future unintentional
operation.
9.2 Cleaning
Wipe the case of the BENNING MM 3 with a clean dry cloth (exception:
special cleaning cloths). Do not use any solvents and/or abrasives to clean the
BENNING MM 3.
9.3 Battery replacement
Remove test leads and turn the power off before opening the
BENNING MM 3! Dangerous voltage!
The BENNING MM 3 is powered by a 9 V block battery. Battery replacement
(see figure 11 below) becomes necessary when the low battery indicator shows
in the display .
This is how to change the battery:
-
Remove the safety test leads from the measured circuit.
-
Remove the safety test leads from the BENNING MM 3.
BENNING MM 3
10/ 2004
16
Advertenties
