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IM 702915-01EN
• Offset drift may increase depending on the condition of the facing
surfaces. It can be improved by finishing the measurement once,
removing it from the conductor to be measured, and performing
demagnetization and zero adjustment again.
• On rare occasions, connecting the power plug to the power supply
that is turned on may cause oscillation, but this is not a malfunction. If
this occurs, you can open and close the sensor head with the opening
lever to stop the oscillation and restore normal operation.
• Depending on the current frequency that is measured, resonant
sound may occur, but this has no effect on measurements.
• In the high frequency region, the probe may be affected by common-
mode noise by clamping the high potential side of an electric circuit. If
necessary, limit the bandwidth of the waveform measuring instrument,
or clamp the low potential side.
Power
source
Load
H
L
• Accurate measurements may not be possible near objects with strong
electromagnetic fields such as transformers, large current circuits,
and wireless equipment.
• When measuring DC or low-frequency, low current, winding the
conductor several times will increase the relative sensitivity. If the
conductor is wound 10 times, the probe will output 10 times the
measured current. However, wind the conductor radially at a diameter
of at least 20 cm.
At least φ20 cm
Wind radially
3. Operation Procedure
