Direct Current (Dc) Measurement - Voltcraft Vc331 Bedienungsanleitung

9.8.2 Direct current (DC) measurement

Risk of electric shock! Do not use the clamp on uninsulated conduct-
ors.
■
Unclamp the conductor if
■
This product is rated for 50-60Hz. Do not exceed this frequency
range as higher frequencies can dangerously overheat the mag-
netic circuit.
Notes:
– The current sensing clamp is magnetized and a low reading may appear
even when no conductor has been covered.
– Only one conductor should be covered by the current sensing clamp.
– For direct current measurements, the polarity of the clamp must match the
flow of current along the conductor. A minus sign "-" will appear in front of
the reading if the polarities are reversed.
– Polarity symbols / are indicated on the front and back of the jaw.
1. Select a range using the rotary switch:
20A
2. Press the SELECT button to enter DC
mode.
à
3. Press the REL/ZERO button to perform
a zero adjustment.
4. The display will show "ZERO".
5. Clamp the jaws around the conductor to
be measured, positioning it between the
jaw alignment marks ►◄.
à
6. Carefully remove the clamp from the
conductor after taking measurements.
(overload) appears on the display.
, 200A .
The display will show "DC".
The reading will show on the display.
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