IM CL250
3
2. Measurement
2.1 Preparation for Measurement
CAUTION
● The jaw section is a delicate, precision sensor. Do not subject the jaw to
unreasonably strong shock, vibration, or force when using it.
● If dust gets into the tops of the jaws, remove it immediately. Do not close
the jaws when dust is trapped in its joints as the sensor may break.
● Please check that the range and mode are set to the desired position
before measurement.
2.2 DC Current Measurement
WARNING
● Do not make measurement on a circuit above 1000VDC. This may cause
shock hazard.
● Do not make current measurement with the test leads connected to the
instrument.
● Keep your fingers and hands behind the barrier during measurement.
(1) Set the Function Selector switch to the "
400A " position and press the
button to select the DC mode. "DC" should be shown on the upper
left corner of the display.
(2) With the transformer jaws closed without clamping them onto the con-
ductor, press the
button for about one second to zero adjust the
display. (
button is enabled only on 400A DC range.) "
" should
be shown on the display.
(3) Set the Function Selector switch to the position appropriate for the order of
the current under test.
