Facom 720.P1500 Notice D'instructions page 13

OPERATION INSTRUCTION
1. Insert the two output plugs of the Current Probe's to the voltage input
terminals of the multimeter.
(Note: The black output plug must be connected to the «COM»
terminal of the multimeter.)
2. Turn on the multimeter.
3. If the current to be measured is a dc current, set the Current Probe in
dc current measurement function by setting the AC/DC switch in the
«DC» position.
If the current to be measured is an ac current, set the Current Probe in
ac current measurement function by setting the AC/DC switch in the
«AC» position.
4. Set the multimeter in the dc millivolts measurement range.
Note: Do not set the multimeter in ac voltage range because the
internal circuit of the Current Probe changes ac current signal into dc
voltage during ac current measurement.
5. Before dc current measurement, set the range switch on the Current
Probe in the 400A range position, and then adjust the zero adjustment
thumbwheel on the Current Probe until the display of the multimeter
reads zero.
6. Set the Current Probe in desired range with the range switch.
Note: When the range switch is in the 400A or 1500A range position,
the Current Probe is on and the LED lights as a power indicator. If the
LED does not light, the battery is low and must be replaced
immediately; otherwise measurement result may be wrong.
7. Press the trigger of the Current Probe and clamp the jaws around the
conductor to be tested. Make sure that the jaws are perfectly closed.
Note:
• Each time only one conductor should be clamped. Never clamp two
or more conductors.
• The conductor should be positioned in the center of the jaws and
should be perpendicular to the Current Probe.
8. Read the voltage reading on the display of the multimeter. Then
calculate the current of the conductor by using the formula:
(In this formula,I is the current of the conductor, Reading is the voltage
reading of the multimeter, Sensitivity is the output sensitivity of the selec-
ted range of the Current Probe.)
Note
1. Do not apply voltage to the output plugs of the Current Probe.
2. For DC current measurements, the display of the multimeter also
indicates the direction of the current being measured. A positive
reading indicates that the current direction is from the Current Probe's
front to its back.
(Tip: Current direction is the opposite of electron flow direction.)
NU-720.P1500_0617 Vbeijing.indd 13
I = Reading
Sensitivity
13
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