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h) Capacity Measuring
Make sure that all the circuit parts, switches and components and other objects of
measurement are disconnected from the voltage and discharged.
With electrolyte capacitors, ensure that you observe the polarity.
- Turn the DMM on and select measuring range
.
- Plug the red measuring line into the V measuring jack and
the black measuring line into the COM measuring jack (8) .
- The display shows the unit “nF”.
☞
Due to the sensitive measuring input, the
display may show a value in case of “open”
measuring lines. By pressing the button
“REL”, the display is set to “0”. In the upper,
small display, the basic value (rel differen-
ce) is displayed. The autorange feature is
deactivated.
- Now connect the two test prods (red = positive pole/black
= negative pole) with the object to be measured (conden-
ser). After a short while the display shows the capacity.
Wait until the displayed value has stabilised. With capaci-
ties of >40 µF, this may take a few seconds.
- If “OL” (overload) appears on the display, you have excee-
ded the measuring range.
- After measuring, remove the measuring lines from the measured object and turn the DMM off.
