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Calibration Information
12
Cleaning
W Warning
To avoid electrical shock or personal injury, do not reinstall the pca until it is
completely dry.
Caution
To avoid damaging the meter, do not use aromatic hydrocarbons or chlorinated
solvents for cleaning. These solutions will react with the plastics used in the
instruments.
Do not use detergent of any kind for cleaning the pca.
Clean the instrument case with a mild detergent and water.
The pca may be washed with isopropyl alcohol or hot deionized water and a soft brush. Dry the pca with
clean dry air at low pressure, then bake it at 50 °C for 24 hours.
Performance Tests
The following performance tests verify the complete operability of the Meter and check the accuracy of
each meter function against the Meter’s specifications (i.e., calibration). If the instrument fails any part of
the test, calibration adjustment and/or repair is indicated.
In the performance tests, the Meter is referred to as the unit under test (UUT).
Setup
WWarning
To prevent arc blast and possible injuries, install only specified replacement
fuses with the speed, amp interrupt rating, and voltage ratings that are shown
in Table 12.
1. Allow the UUT to stabilize to room temperature 23 °C ± 5 °C (73 °F ± 9 °F).
2. Check the fuses and battery, and replace them if necessary. (Refer to the battery and fuse replacement
procedures.)
Testing the Display
To test the display, turn the UUT on and check whether all display segments come on as indicated in
Figure 6. If you want the display to stay on longer, hold down the yellow button as you turn on the Meter.
pd003f.eps
Figure 6. Display Test
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