DRIFT TEST
If the gauge passes the stat test, but shows long-term drift between
measurements, perform a drift test to check the long-term drift of
the gauge. A drift test consists of five counts taken three to eight
hours after a stat test with no movement of the gauge between tests.
The gauge sets the pass/fail limits based on the percent difference
between the average of the stat test and drift test results. If the
percent difference exceeds 0.5 percent for density counts or 1
percent for moisture counts, then the drift test fails. If the drift test
fails, ensure that the gauge setup and testing were conducted
correctly, and take an additional test. If the second test fails, contact
the nearest Troxler service center for assistance. For a list of Troxler
and authorized Troxler service centers, refer to page iii of this
manual or visit the Troxler website at
www.troxlerlabs.com/SERVICES/services.shtml
.
NOTE
The drift test consists of five 4-minute counts, whereas
the stat test consists of twenty 1-minute counts.
Therefore, each test takes approximately 20 minutes to
conduct.
DO NOT turn the gauge off between a stat test and a
drift test.
DO NOT move the gauge between the stat and drift tests
to eliminate possible failure due to positioning changes.
To access the Drift Test function, press 〈5〉 at the Setup menu. The
gauge displays the Drift Test menu:
To select a menu option, press the corresponding numeric key or
press
〈ESC〉 to return to the Setup menu.
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