Model 3451
6–5
MOISTURE OFFSET
The moisture offset (
k
) is determined by comparing the
true
moisture
of a laboratory sample with the gauge moisture reading.
The Model 3451 can derive the moisture offset either by taking a
moisture measurement and comparing the reading to the true
moisture entered by the operator, or by comparing measured and
true values entered by the operator. To access the moisture offset
functions, press the
〈
Moisture
〉
button on the
Offset Menu
(see
Figure 6–1). The PDA displays the
Moisture Offset Select
screen shown in Figure 6–4.
New Moisture Offset from Gauge Reading
To derive the moisture offset by first taking a moisture reading, the
operator must take a reading with the gauge and enter the true
moisture derived by an oven dry or similar method. The gauge can
store one
partial offset
, which allows the operator to take a reading
and enter the true moisture at different times.
NOTE
When using destructive methods such as drilling cores
or sample removal for true moisture measurement, take
gauge readings before removing samples.
Figure 6–4. Moisture Offset Select
6.
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Summary of Contents for Enhanced RoadReader Plus 3451
Page 7: ...Model 3451 vii NOTES...
Page 17: ...xvi NOTES...
Page 29: ...1 12 NOTES...
Page 33: ...2 4 Figure 2 1 Effect of Moisture on Depth of Measurement...
Page 85: ...4 22 NOTES...
Page 106: ...Model 3451 6 3 Figure 6 1 Offset Menu 6 OFFSETS CALIBRATION...
Page 114: ...Model 3451 6 11 Figure 6 10 Moisture Offset Erase Prompt 6 OFFSETS CALIBRATION...
Page 131: ...6 NOTES...
Page 141: ...7 10 Figure 7 5 Project Data Spreadsheet...
Page 145: ...7 14 Figure 7 8 Project Setup Display Figure 7 9 Standard Counts Display...
Page 147: ...7 16 Figure 7 10 Project Status Display Figure 7 11 Source Decay Display...
Page 149: ...7 18 Figure 7 12 Stat Test Display Figure 7 13 Drift Test Display...
Page 153: ...7 22 NOTES...
Page 166: ...Model 3451 Appendix A 13 Figure A 3 Cleaning the Sliding and Fixed Blocks...
Page 174: ...Model 3451 Appendix A 21 NOTES...
Page 175: ......
Page 183: ...Appendix B 8 NOTES...
Page 221: ...Appendix D 6 NOTES...
Page 223: ...Appendix E 2 STANDARD COUNT LOG Gauge Serial Number Date Moisture MS Density DS1 Density DS2...
Page 225: ...Appendix E 4 STANDARD COUNT LOG Gauge Serial Number Date Moisture MS Density DS1 Density DS2...
Page 227: ...Appendix E 6 STANDARD COUNT LOG Gauge Serial Number Date Moisture MS Density DS1 Density DS2...
Page 229: ...Appendix E 8 STANDARD COUNT LOG Gauge Serial Number Date Moisture MS Density DS1 Density DS2...
Page 235: ...Appendix G 4 NOTES...
