Amprobe AD40B AC40B Mini-Clamp-Meters User Manual
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Audible Continuity (AC40C)
Like resistance measurement. Continuous tone and R display at
R ≤40 Ω for AC40C
Max open circuit voltage: -1.2 V
Overload Protection: 600 Vrms
Data Hold: Hold display reading for all functions and ranges.
Always remember to release Data Hold when taking a new
measurement.
tRoUBLESHootINg & MAINtENANCE
In case of malfunction during the operation of the meter, the
following steps should be performed in order to isolate the
cause of the problem:
Check the batteries.
1.
Review the operating instructions for possible mistakes in
2.
operating procedure.
Check clamp against a known current source.
3.
Check test leads for continuity (voltage and resistance).
4.
Except for the replacement of the batteries, repair of the clamp
should be performed only by a Factory Authorized Service
Center or by other qualified instrument service personnel.
Front panel and case can be cleaned with a mild solution of
detergent and water. Apply sparingly with a soft cloth and let
dry completely before using. Do not use aromatic hydrocarbons
or chlorinated solvents for cleaning.
Battery Replacement
The meter is powered by two 1.5 V AAA batteries. Replace
batteries as soon as N symbol is displayed.
Turn meter off. Disconnect and remove the test leads.
1.
Position the meter face down. Remove the two screws and
2.
lift off rear case.
Replace the batteries.
3.
Reassemble the case.
4.