2.3 Pre-Operation Inspection
Before turning on the instrument, be sure to read Operating Pre-
cautions (p.7).
Verify that there is no foreign matter lodged between the tips of
the clamp sensor and that the sensor can be closed and opened
smoothly. If so, clamp the included resistance check loop and
verify that the instrument is operating properly. Verify that a
value within the allowable range is displayed for each loop.
Using the included resistance check loop to
inspect the instrument
Inspecting the instrument with the resistance check loop
Test resistance Allowable range
1 Ω 0.95 to 1.05 Ω
25 Ω 24.3 to 25.7 Ω
• If the instrument displays a value outside the allowable
range, it needs to be repaired. Contact your dealer or
Hioki representative.
• The resistance check loop cannot be used to calibrate
the instrument. To have the instrument calibrated, con-
tact your dealer.
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