B) Current Measuring (A; Only In Vc155); Resistance Measuring - VOLTCRAFT VC135 Bedienungsanleitung

b) Current measuring (A

The voltage in the measuring circuit may not exceed 600 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.
Proceed as follows to measure DC currents "µA, mA, A"
AC current is not supported by this DMM. Do not attempt to measure AC
currents with this DMM.
Insert the red measuring lead into the 10 A max socket (10) if you are not sure about
the size of the current.
1. Turn the DMM on and select the measuring range "A
values on the rotary switch (5) indicates the maximum measurement value of that selection.
Try to start measuring with the largest measuring range if possible, because the fine fuse will
trigger in case of excess current.
2. Insert the red measuring lead into the 10 A max socket (10) (with currents > 200 mA) or into
the mAμA socket (8) (with currents <200 mA). Plug the black measuring lead into the COM
socket.
3. Now connect the two test prods in series with the object to be measured (battery, circuit
etc.); the display indicates the polarity of the measured value together with the currently
measured value. The unit of the measurement is µA, mA or A (depends on the measuring
range selected).
As soon as a minus "-" appears for the direct voltage measuring in front of the
measuring value, the measured voltage is negative (or the measuring tips have been
mixed up).
c) Resistance measuring
Make sure that all the circuit parts, switches and components and other
objects of measurement are disconnected from the voltage and discharged.
Proceed as follows to measure the resistance:
1. Turn the DMM on and select measuring range "Ω".
2. Insert the red measuring lead into the Ω socket (8) and the black measuring lead into the
COM socket (9).
34

, only in VC155)

" with the rotary switch (5). The