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6. Maintenance
A. Battery Selection
The PCL120 operates on a standard 9V alkaline battery or an optional
rechargeable 9V Ni-Cd battery. For most applications the 9V alkaline
battery will suffice; however, in heavy use applications the 9V Ni-Cd may
be a better choice. The 9V Ni-Cd battery supplied by OMEGA will offer
approximately 3 hours of continuous use at 12 mA output on a full charge
(the alkaline battery will yield about 12 hours). The charger supplied by
OMEGA will provide an overnight charge rate (10-12 hours) and will also
power the PCL120 for bench use while maintaining a float charge on the
Ni-Cd battery.
Warning
: Never connect the AC adapter/ charger with the 9V alkaline
battery installed.
To order the 9V Ni-Cd battery or AC adapter/charger contact OMEGA
Engineering at 800-826-6342.
B. Input Protection
The PCL120 incorporates a fuseless input protection and will tolerate most
misconnections up to 250 VAC or 250 VDC for up to 30 seconds duration.
Because of this protection no maintenance is required.
C. Calibration
The PCL120 is designed to hold its rated accuracy for a minimum of one
(1) year. It is therefore recommend that an annual re-calibration be done
to ensure operation within specification. Contact OMEGA’s Customer
Service Department for re-calibration information at 1-800-826-6342 or
www.omega.com.