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Performing Measurements
3
To lock the sensor head,
push the opening lever
until the
indication disappears.
The
turns off.
Monitor the current waveform with the waveform
4
measurement instrument.
The output sensitivity of the device is 1 V/A. The current
sensitivity can be derived from the voltage sensitivity of the
waveform measurement instrument.
For example, if the voltage sensitivity is 10 mV/division, the
current sensitivity is 10 mA/division.
Reference
• Offset voltage fluctuations of about 1 mV may occur when
the sensor is opened or closed. To perform high-precision
measurement, perform the steps listed below before
clamping around the conductor being measured. Additionally,
manipulate the lever gradually when closing the sensor
and avoid subjecting the sensor head to large mechanical
shocks. Abrupt manipulation of the lever may increase offset
voltage fluctuations due to the shock it generates.
1
Wait about 5 minutes after the completion of demagnetization
and zero-adjustment for offset drift to stabilize.
2
Operate the opening lever four or five times to acclimatize
the sensor.
3
Press the
zero-adjustment only (do not press and hold the key).
• Do not subject the jaw or the opening lever to external force
to prevent the occurrence of offset voltage fluctuations.
42
JAW UNLOCKED
JAW UNLOCKED
DEMAG/AUTO ZERO
LED
key briefly to perform
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