consists of performing five 240-second counts. To obtain a
meaningful drift result, first take a Stat Test (please refer to the
Stat Test) and wait 3-4 hours before starting a drift test. The
average of the five drift moisture and density counts is
compared against the average of the 20 one minute Stat test
averages. Passing limit on moisture is equal to 1.0% or less and
density is equal to 0.5% or less.
1. Perform a Stat Test on the gauge.
2. Wait 3-4 hours, and then begin the next steps. The
gauge may be used during this time, but if the gauge is
not functioning correctly, then it would be best not to
use it to obtain measurements.
3. After 3-4 hours, set the gauge back on the standard
block. Make sure the source handle is in the “SAFE”
position.
4. Press the MENU button. Press the 6 button.
5. Press START.
6. After 20 minutes, the results will be displayed.
7. If the gauge indicates a failing percentage, then
contact your InstroTek representative.
Note: Control the movement of other gauges during this test.
Always keep other gauges a minimum of 10 meter (30 feet)
away, while taking a Drift test.
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