Iwatsu SS-500 Series Instruction Manual page 63

NOTE
• Depending on the amplitude and frequency of a current
under measurement, the sensor heads may emit a
resonant sound. Such a sound may also be emitted during
demagnetization. This, however, does not represent a
device malfunction.
• If foreign matter adheres to the facing core surfaces on
the sensor heads and thus creates a slight gap between
the upper and lower sensor heads, the sensor heads may
emit a resonant sound.
Remove any foreign matter by following the cleaning
method.
See "4.3 Cleaning" (p. 9 6).
• An increase in the resonant sound while the device is in
use may indicate that the gap between the upper and
lower heads has widened. The gap may adversely affect
the measurement accuracy. Calibrating the device is
recommended.
See "Maintenance and Service" (p. 8 3).
Measuring Currents
2
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