5. METHOD OF MEASUREMENT
5-1. Measurement of Current
5-1-1 Measurement of DC Current
①
Set the power switch to "ON" position.
②
Set the function switch to a range appropriate
to the current to be measured.
③
Press the zero adjustment switch once, the zero
display will be observed.
Note: When pressing the zero adjustment switch in
DC 40A range, even if the zero display is not
obtained for high sensitivity, however,
this is not abnormal and the accuracy is kept
in the tolerance.
④
Clamp the conductor of the circuit at the center of CT. Fig.1
⑤
Read the current value in the display.
⑥
If you make measurements in a dark place
or in a place where it is difficult to see the
readings, use the data hold switch.
Note : Clamp around only one conductor of the circuit to be measured. (See Fig.1)
Over range value is moved due to the zero adjustment, however, this is not
abnormal.
To release the zero adjustment mode, press the zero adjustment switch at least
1 second.
5-1-2 Measurement of AC Current
①
Set the power switch to "ON" position.
②
Set the function switch to a range appropriate to the current to be measured.
③
Press the sub-function switch for AC measurement, “~” mark is displayed.
④
Clamp the conductor of the circuit at the center of CT.
⑤
Read the current value in the display.
⑥
If you make measurements in a dark place or in a place where it is difficult to
see the readings, use the data hold switch.
Note : Clamp around only one conductor of the circuit to be measured. (See Fig.1)
When making the clamp measurements for high AC current, the noise sound
of CT may be caused, however, this is not abnormal.
△
!
WARNING
●
To avoid electrical shock or damage, the measurement is limited to the circuit
under 600V AC.
Such voltages pose a shock hazard.
●
Never fail to keep the maximum 2000A input to avoid electrical shock or damage.
●
Never make measurements for uninsulated conductors or bus bars.
