Measuring Capacitance; J) Non-Contact Ac Voltage Detection (Ncv) - VOLTCRAFT VC-522 AC Bedienungsanleitung

i) Measuring capacitance
Make sure that all objects that you wish to measure (includ-
ing circuit components, circuits and component parts) are
disconnected and discharged. Always pay attention to the
polarity when using electrolytic capacitors.
• Turn the DMM on and select "CAP" mode.
• Press the "MODE" button twice to change the measurement mode. "nF"
will appear on the display. Press the button again to switch to the next
measuring mode.
• Plug the red lead into the V terminal (K) and the black lead into the COM
terminal (I).
Due to the sensitive measuring input, the display may show a
small reading even with "open" test leads. Press the "REL" button
to reset the display to "0". The REL function should only be used
for small capacitances.
• Connect the two test probes (red = positive, black = negative) to the object
that you want to measure (condenser). The capacitance will be shown on
the display after a few seconds. Wait until the display stabilises. This may
take a few seconds for capacitances greater than 40 µF.
1. OL" (overload) indicates that the measuring range has been exceeded.
2. After taking a measurement, remove the leads from the measured object and switch off the DMM.

j) Non-contact AC voltage detection (NCV)

The voltage detector is only designed for
quick tests and by no means replaces a con-
tact bipolar voltage test. This function must
not be used to check that no voltage is pre-
sent before carrying out work.
The NCV function (non-contact voltage detection) enables
the contactless detection of an AC voltage on electrical con-
ductors. The NCV sensor (A) is located on the top of the
current clamp.
• Switch the DMM on. The "NCV" function is activated as
soon as the DMM is switched on.
• Place the NCV sensor as close as possible to an electrical
conductor.
• If an AC voltage is detected, the red NCV LED (D) will
turn on.
• The highly sensitive NCV sensor may cause the diode to
glow when static electricity is present. This is normal and
does not indicate that the multimeter is faulty.
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