Measurements; Ac And Dc Current (Jaw) - Fluke 381 User Manual

381
Users Manual

Measurements

Prior to first use, remove the battery isolator (small piece of plastic between the
batteries and battery contacts).

AC and DC Current (Jaw)

To prevent electric shock or personal injury:
When making current measurements, disconnect the test leads from the Meter.

Keep fingers behind Tactile Barrier. See

When measuring current, center the conductor in the Jaw using the alignment marks
on the Jaw.
Before taking dc measurements, push
removes dc offset from the reading. The Zero function works only in the dc current
measurement Rotary Function Switch position.
Before zeroing the Meter, make sure the Jaws are closed and there is no conductor
inside the Jaw.
To measure ac or dc current:
1. Turn the Rotary Function Switch to the proper function. You should see
indicating that the measurement is coming from the Jaw.
When the measured current is <0.5 A, the center dot in the display icon
and off. With current >0.5 A, the center dot will be steady.
2. If measuring dc, wait for the display to stabilize and then push
3. Open the Jaw by pressing the Jaw Release and insert the conductor into the Jaw.
4. Close the Jaw and center the conductor using the alignment marks.
8
Note
XW Warning
Table 1.
Note
to ensure correct readings. Zeroing the Meter
Z
Note
Note
on the display,
X
will flash on
X
to zero the Meter.
Z