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Model 3430
3-5
DAILY INSPECTION
The gauge should be inspected daily before use to ensure proper
operation of all safety features as follows:
✓
Push the source rod down into the backscatter position, and then
raise it back to the
SAFE
(shielded) position. The source rod
opening in the bottom of the gauge is equipped with a spring-
loaded tungsten sliding block that shuts when the source rod is
in the
SAFE
position. Turn the gauge over and verify that the
sliding block is completely shut. If any portion of the opening is
uncovered, the sliding block should be cleaned before using,
transporting, or storing the gauge. Refer to the
section of Appendix C for instructions on cleaning
✓
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 either that the survey instrument is not
working properly or that the cesium-137 source may be missing.
Refer to the
section of Appendix C for further
CAUTION
Do not store or transport the gauge unless the
sliding block is completely closed. Increased
radiation levels may violate transportation
regulations and cause excessive personnel radiation
exposure.
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Содержание 3430-M
Страница 9: ......
Страница 14: ...xii NOTES...
Страница 19: ...Model 3430 1 5 Figure 1 1 Model 3430 Gauge and Accessories INTRODUCTION...
Страница 22: ...1 8 NOTES...
Страница 25: ...Model 3430 2 3 Figure 2 1 Direct Transmission Geometry Figure 2 2 Backscatter Geometry OPERATION THEORY...
Страница 26: ...2 4 Figure 2 3 Backscatter Surface Density Effects Top Layer Effect Curves...
Страница 28: ...2 6 Figure 2 4 Effect of Moisture on Depth of Measurement...
Страница 48: ...3 20 NOTES...
Страница 62: ...4 14 NOTES...
Страница 66: ...5 20 D xxxx M xxxx Use keys Moist R xxxx to view data Moist Avg xxxx to view data...
Страница 88: ...A 14 NOTES...
Страница 111: ...Model 3430 C 17 Figure C 2 3430 Gauge Assembly MAINTENANCE...
Страница 113: ...Model 3430 C 19 Figure C 3 3430 Gauge Base Mechanical Assembly Figure C 4 3430 Source Rod Handle Assembly MAINTENANCE...
Страница 115: ...Model 3430 C 21 Figure C 5 3430 Gauge Preamplifier Assembly MAINTENANCE...
Страница 117: ...Model 3430 C 23 Figure C 6 3430 Gauge Scaler Assembly MAINTENANCE...
Страница 128: ...E 2 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Страница 129: ...Model 3430 E 3 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number STANDARD COUNT LOG...
Страница 130: ...E 4 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Страница 140: ...Index 8 NOTES...
Страница 141: ...Model 3430 Warranty 1 NOTES WARRANTY...