Troxler EGauge 4590, Manual Of Operation And Instruction

Page: 130 / 186

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Gauge Fails Standard Counts
1 1 . . Ensure that the guidelines for performing the standard
count listed on page 4–5 are followed.
2
2
.
. Perform the standard count again. If it still fails, contact your
nearest Troxler service center or representative.
No Density Readings
The most likely reason for no density readings is an electronic
problem, such as a failure of the detector preamplifier.
As a precaution, ensure that the tip of the source rod is intact
and undamaged. Use a radiation survey meter to check the
radiation levels at the surface of the gauge base where the
source rod exits (without extending the source rod). A
maximum reading of .2 mrem/hr is normal, and indicates the
source is present. If the maximum reading is less than 0.1
mrem/hr or if a survey meter is not available,
perform a visual
inspection
of the source rod tip as follows to confirm its
integrity.
Extend the source rod just far enough to see the source rod tip.
The tip should appear flat to slightly rounded and smooth.
Complete the inspection as quickly as possible and stay at least
1 meter from the rod tip to minimize exposure.
If the visual inspection indicates that the source rod tip is
broken off (source is missing):
1 1 . .
Initiate a search for the source starting at the location where
the gauge was last used.
CAUTION
Also, the gauge may have gotten wet. The Model 4590
gauges are not waterproof and should not be used in the
rain. If the gauge gets wet, make sure it is completely dry
before sealing it in the case for storage.