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4
Repairs, Inspections, and Cleaning
4.1 Troubleshooting
Symptom
• The instrument is indicating an
abnormal measured value.
Verification and/or Solution
• Is the measured current value too small for the instrument's
measurement range?
• Wrap the wire around the jaw one or more times. Each additional
wrap of the wire will increase the measured value, so that wrapping
it once yields a measured value that is twice the actual value and
wrapping it twice yields a measured value that is three times the
actual value.
• Is the tip of the jaw open?
• Is the jaw damaged?
• If the jaw is damaged or cracked, it will not be able to measure current
accurately. Send the instrument for repair.
• Displayed values can frequently fluctuate due to induction potential
even when no voltage is applied. This, however, is not a malfunction.
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