Fluke 80i-410 - Making Measurements

1. Use the thumb and forefinger of one hand to grasp the probe in
the middle where the two screw heads are exposed.
2. With your other hand, compress the handles together, t
release them suddenly. The jaws should come together wi
snapping action.
3. Repeat the above procedure twice.
NOTE
The snapping action will not damage the jaws if the
mating surfaces are kept clean.
Alternate Demagnetizing Procedures
If a conductor carrying ac current is available, clamp the jaws of the
probe around the conductor, wait a few seconds, then slowly remove
the probe. If a conductor carrying de current is available, clamp the
jaws ofthe probe around the conductor. Then remove the probe and
clamp it around the conductor again so thatthe current flows through
the jaws in the opposite direction.
Making Measurements
Use the following procedure to make current measurements (see
Figure 3):
1. Connect the probe output leads to the voltmeter inputs (black to
COMMON or LOW and red to VOLTS).
NOTE
Refer to Table 1 to determine the appropriate input jack
and proper function setting for use with a Fluke handheld
DMM.
2. Select the appropriate ac or de function on the voltmeter.
Turn on the voltmeter and select a voltage range to display the
expected value (1 mV per amp).
NOTE
When measuring ac current, and using a meter without
an ac mV function, use the ac Volt function.With many >
meters, this will limit resolution to 1A and readings will
appear divided by 1000. For example, a 15A reading will
appear as 0.015V.
4. Turntheprobe ON/OFF switch located on the probe handle to the
ON position.
5. Observe the voltmeter reading. If necessary, demagnetize the
probe.
6. Clamp the jaws of the probe around the conductor to be mea-
sured. Position the probe so that the conductor is in the center of
the jaw opening for the most accurate reading.
7. Observe the voltmeter display. The reading in millivolts is equiva-
lent to the current in amps (i.e., 5 mV = 5A). A positive polarity
reading indicates that the dc current is flowing in the direction of
the arrow on the probe.
8. Snap the jaws twice to remove the residual magnetism inthe core
(see Demagnetizing and Alternate Demagnetizing Procedures).
Do NOT turn the gain adjustment to eliminate core magnetism.
If the core magnetism persists after demagnetizing procedures
have been completed, perform steps 1-6 of the Calibration
Procedure.
Figure 3.