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Assuming that the stat test has already been performed (and
passed) but gauge readings seem to drift between tests, the Drift
Test can be performed to check the long-term drift of the gauge.
The Drift Test consists of five counts performed approximately 3-
4 hours after completion of a stat test.
NOTE
The count time is based on the last stat test. The
drift test count time should be four times the stat
test count time. The gauge should not be turned off
between the stat test and drift test. The stat test
must be current.
Press 〈SHIFT〉 and 〈9〉 to display the Special menu. To access the
Drift Test feature, press
〈2〉 and 〈ENTER〉 for:
Remove any samples or sample pans from the gauge and press
〈START〉.
After completion of the 5 counts, the gauge will display the
average counts and indicate if the test passed or failed. The
Pass/Fail criterion is 1.0%.
Avg Cnt s: xxxx
Dr i f t :
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