Frequency Measurement; Maintenance - Benning MM 11 Instrucciones De Servicio

on the BENNING MM 11.
- The red safety measuring cable has to be connected to the jack for V, Ω,
Hz, °C,
 on the BENNING MM 11.
- The safety measuring lines have to be brought into contact with the measur-
ing points. If the line resistance between the COM jack  and the jack for V,
Ω, Hz, °C,
See figure 8:
8.6 Capacity measurement
Before
capacitors completely!

Never apply voltage to the capacity measurement jacks! The
appliance can become damaged or even be destroyed! A
damaged appliance may cause an electrical hazard!
- Use the rotary switch  to select the required function (
BENNING MM 11.
- Determine the polarity of the capacitor and discharge capacitor complete-
ly.
- The black safety measuring cable has to be connected to the COM jack 
on the BENNING MM 11.
- The red safety measuring cable has to be connected to the jack for V, Ω,
Hz, °C,  on the BENNING MM 11.
- The safety measuring lines have to be brought into contact with the dis-
charged capacitor according to its polarity, read off measured value on the
digital display  unit of the BENNING MM 11.
See figure 9:

8.7 Frequency measurement

- Using the rotary switch  select the required function (Hz, %DF) on the
BENNING MM 11.
- The black safety measuring cable has to be connected to the COM jack 
on the BENNING MM 11.
- The red safety measuring cable has to be connected to the jack for V, Ω,
Hz, °C,
the frequency measurements on the BENNING MM 11!
- Bring the safety measuring lines into contact with the measuring points, read
off measured value on the digital display  unit of the BENNING MM 11.
See figure 10:
8.8 Pulse duty ratio measurement
- Using the rotary switch  select the required function (Hz, %DF) on the
BENNING MM 11.
- Using the button (blue)  carry out the switchover to pulse duty ratio meas-
urement (%DF) on the BENNING MM 11 (press key once)
- The black safety measuring cable has to be connected to the COM jack 
on the BENNING MM 11.
- The red safety measuring cable has to be connected to the jack for V, Ω,
Hz, °C,
the frequency measurements on the BENNING MM 11!
- Bring the safety measuring lines into contact with the measuring points, read
off measured value on the digital display  unit of the BENNING MM 11.
See figure 10:
8.9 Temperature measurement
- Use the rotary switch  to select the required function (°C or °F) on the
BENNING MM 11.
- Bring the adapter for the temperature sensor in the COM jack  and V, ,
Hz, °C,  into pole-correct contact.
- The temperature sensor (type K) must be contacted in the adapter.
- The contact point (end of the sensor line) has to be placed at the point to
be measured. Read off measured value on the digital display  unit of the
BENNING MM 11.
See figure 11:
9.

Maintenance

Before opening the BENNING IT MM , make quite sure that it

is voltage free! Electrical danger!
Work on the opened BENNING MM 11 under voltage may be carried out only
by skilled electricians with special precautions for the prevention of
accidents.
09/ 2007
 50 Ω, the fitted buzzer sounds on the BENNING MM 11.
Continuity testing with buzzer
carrying out
Capacity measurements
 on the BENNING MM 11. Note the minimum sensitivity for
Frequency-/ pulse duty ratio measurement
 on the BENNING MM 11. Note the minimum sensitivity for
Frequency-/ pulse duty ratio measurement
Temperature measurement
­ B ENNING­MM­11­
capacity measurements

discharge
) on the
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