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Model 3430
5-5
DRIFT TEST
If the stat test has already been performed (and passed), but gauge
readings seem to drift between tests, the
drift test
can check the
long-term drift of the 3430 gauge.
A drift test consists of five 4-minute counts taken approximately 3
to 8 hours after completion of a stat test
with no movement of the
gauge between tests.
Pass/fail limits are set using the percent
difference between the average of the stat and drift test results. If the
percent difference exceeds 0.5% for density or 1% for moisture, the
drift test fails.
NOTE
The gauge should not be turned off between the stat test
and drift test. The stat test must be current.
In addition, the gauge must not be moved between the
stat and drift tests to eliminate possible failure due to
positioning changes.
With the gauge still in the standard count position (on the reference
standard block), press
〈
SPECIAL
〉
.
From the
Special
functions, select the
Drift Test
feature by pressing
the down arrow three times and
〈
START/ENTER
〉
.
To begin the five counts, press
〈
START/ENTER
〉
.
As with the stat test, the gauge indicates the count progress during
the drift test.
press START for
20 min Drift Test
– DRIFT TEST –
Rdg.#:xx
xxx sec
S
P
E
CI
AL
F
UNCT
IO
N
S
Summary of Contents for 3430-M
Page 9: ......
Page 14: ...xii NOTES...
Page 19: ...Model 3430 1 5 Figure 1 1 Model 3430 Gauge and Accessories INTRODUCTION...
Page 22: ...1 8 NOTES...
Page 26: ...2 4 Figure 2 3 Backscatter Surface Density Effects Top Layer Effect Curves...
Page 28: ...2 6 Figure 2 4 Effect of Moisture on Depth of Measurement...
Page 48: ...3 20 NOTES...
Page 62: ...4 14 NOTES...
Page 66: ...5 20 D xxxx M xxxx Use keys Moist R xxxx to view data Moist Avg xxxx to view data...
Page 88: ...A 14 NOTES...
Page 111: ...Model 3430 C 17 Figure C 2 3430 Gauge Assembly MAINTENANCE...
Page 115: ...Model 3430 C 21 Figure C 5 3430 Gauge Preamplifier Assembly MAINTENANCE...
Page 117: ...Model 3430 C 23 Figure C 6 3430 Gauge Scaler Assembly MAINTENANCE...
Page 128: ...E 2 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Page 129: ...Model 3430 E 3 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number STANDARD COUNT LOG...
Page 130: ...E 4 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Page 140: ...Index 8 NOTES...