536155

Voltcraft VC155 Manual

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a) Voltage measuring “V”
Before measuring voltages, always make sure that the measuring instrument is not
set to a measuring range for current.
Proceed as follows to measure DC voltages “DC” (V ):
1. Turn the DMM on and select the measuring range “V ” with the rotary switch (5). The values on
the rotary switch (5) indicates the maximum measurement value of that selection.
2. Insert the red measuring lead into the V socket (8) and the black measuring lead into the COM
socket (9).
3. Now connect the two measuring prods to the object to be measured (battery, switch etc.).
4. The red measuring tip indicates the positive pole, the black measuring tip the negative pole.
5. The polarity of the respective measuring value is indicated on the together with the current
measuring value. The unit of the measurement is V.
As soon as a minus “-” appears for the direct voltage in front of the measuring value, the
measured voltage is negative (or the measuring tips have been mixed up).
6. After measuring, remove the measuring leads from the measuring object and turn the DMM off.
Turn the rotary switch to the position “OFF” .
Proceed as follows to measure AC voltages (V~):
1. Put the DMM into operation as described in the section “Measuring of direct voltage” and select
the measuring range “V “.
2. Now connect the two measuring leads to the object to be measured (generator, switch etc.).
3. The measuring value is indicated on the display. The unit of the measurement is V.
4. After measuring, remove the measuring leads from the measuring object and turn the DMM off.
Turn the rotary switch to the position “OFF”.
b) Current measuring (A , only in VC155)
The voltage in the measuring circuit may not exceed 250 V.
Measuring operations of >5 A may only be performed for at most 10 seconds with a
subsequent measuring pause of 15 minutes.
All current measuring ranges are provided with fuses and thus protected against
overload.
… 30 …


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