3.
Report lost or missing radioactive sources to your state or
federal radiation control agency in accordance with
applicable regulatory requirements.
4.
Contact the Troxler Radiation Safety Department for further
advice.
GAUGE READINGS APPEAR ERRATIC
✓
Ensure that the source rod is properly locked in the desired
backscatter or direct transmission position, and is not resting on
the test material.
✓
Check the inside of the gauge for moisture. To dry the gauge
interior, remove the keypad. If necessary, use a hair dryer (on
low heat) to circulate warm air for one to three hours.
✓
Remove any foreign objects from inside the gauge.
✓
Ensure the hardware mounting screws are tight and in place.
✓
Check count time – a four-minute count will give the highest
precision with a repeatability of ±1 pcf.
✓
Erratic density readings may be caused by a dirty sliding block.
Clean the sliding block as described on page C-12.
✓
Perform a statistical stability (stat) test.
► If test passes, proceed with job.
► If test fails, repeat two more times. If test fails two out of
three times, contact the nearest Troxler Service Center.
NOTE
To aid in verifying gauge readings, after a gauge has
been calibrated, mark a test area on a concrete floor,
sidewalk, or equivalent and measure the density (WD).
This measurement can then be used as a reference to
verify later gauge readings.
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