Model 3411-B Advanced Control Unit Appendix B–3
B. MAINTENANCE
If the visual inspection indicates that the source rod tip is
broken off (source is missing):
1. Immediately contact your Radiation Safety Officer (RSO).
2. Initiate a search for the source starting at the location where
the gauge was last used.
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 in the Model 3400-B
Manual of Operation and Instruction.
Perform a statistical stability (stat) test (see page 4–2).
If test passes, proceed with job.
If test fails, repeat two more times. If test fails two out of
three times, contact Troxler Technical Support (see page
B-11).
To Next Page
Loading...
Need help?
General