Model 3440-L 2–3
WARNING
Do not store or transport the gauge unless the tungsten
sliding block is completely closed. Increased radiation
levels may violate transportation regulations, and may
cause excessive personnel radiation exposure.
2. If a radiation survey instrument is available, verify that the radioactive
gamma source is in place by measuring the exposure rate at the surface
of the gauge. The exposure rate should be approximately 10-20 mrem
per hour. A reading of about 1 mrem or less indicates that either the
survey instrument is not working or the cesium-137 (Cs-137) source
may be missing. Refer to the Troubleshooting information in
Appendix F for further instructions.
2. GETTING STARTED
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