Operation Instruction - Herth+Buss Claw 400 Bedienhinweis

Operating Instruction

7.0 Operation Instruction

EN
1. Set the multimeter to the desired dc voltage
range.
Note: Do not set the multimeter to ac volt-
age range because the internal circuit of
the Current Probe changes the ac current
signal into dc voltage during ac current
measurement.
2. Insert the Current Probe's two output
plugs to the voltage input terminals of the
multimeter.
Note: The black output plug must be con-
nected to the COM terminal of the multi-
meter.
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3. Set the Current Probe to the desired range
with the range switch, the LED lights.
4. Select ac or dc current measurement with
the AC/DC button according to the indica-
tion of the marks beside the AC/DC button
of the Current Probe.
5. Before dc current measurement, press and
hold down the ZERO button of the Current
Probe for several seconds for zeroing.
6. Press the trigger and clamp the jaws around
the conductor to be measured. Make sure
that the jaws are perfectly closed.
Note:
a. Each time only one conductor should be
clamped.
b. The conductor should be in the center of
the jaws and should be perpendicular to
the Current Probe.
7. Read the voltage reading on the display of
the multimeter. Then calculate the current
of the conductor by using the formula:
Reading
I =
Sensitivity
ln this formula, I is the current of the con-
ductor, Reading is the voltage reading of
the multimeter, Sensitivity is the sensitivity
of the selected range of the Current Probe.
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