Calibration Manual
Verification Tests
11
F1
F2
1
LT014F.EPS
Figure 2. Replacing a Fuse
Verification Tests
XWarning
Some of the verification tests involve the use of high voltages and
should be performed by qualified personnel only.
To avoid electrical shock, always place the calibrator in the Standby
(STBY) mode between tests and before handling the test connections
or test cables.
Verification tests confirm the complete operability of the 787 ProcessMeter and check
the accuracy of each ProcessMeter function against the ProcessMeter’s specifications. If
the ProcessMeter fails any verification test, it needs calibration adjustment or repair.
The ProcessMeter’s performance and accuracy are specified for one year after
calibration at operating temperatures of +18 °C to +28 °C (64 °F to 82 °F), in relative
humidity to 90 %. The specifications assume the ProcessMeter has been warmed up for 5
minutes before use.
To perform the verification tests, it is not necessary to open the case; no adjustments are
necessary. Merely make the required connections, source the designated values, and
determine if the reading on the ProcessMeter or the multimeter falls within the
acceptable range indicated.
These verification test procedures assume that the person performing the tests has read
the 787 Users Manual, knows how to select functions and ranges on the ProcessMeter,
and knows how to operate the required equipment.
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