2–16
Make sure the gauge is on the reference standard block as shown in Figure
2–2. Ensure that the source rod in the SAFE position and press 〈YES〉 to
begin taking the four-minute standard count.
Taking
Standard Count
xxx seconds
remaining
After count completion, the display is:
MS=xxxx xx.xx %P
DS=xxxx xx.xx %P
Do you want to
use the new STD?
The P indicated to the right of the percentage figures indicates that the new
counts are within the 1% density and 2% moisture limits. If the
percentages are not within these limits, an F will be displayed. If you do
get an F, or fail, display check for the following conditions:
Is the source rod in the proper position?
Are any other gauges close by?
Is the gauge seated correctly on the reference standard block?
Are the base of the gauge and the top of the reference standard block
both clean?
Is the reference standard block on a recommended surface?
If all other conditions are normal, do not accept the standard count just
taken. Press 〈NO/CE〉 and take another standard count.
NOTE
If the second count also fails, the old standard count sets
should be erased as described on page 7–9. Successive
standard count failures are usually the result of a prolonged
period between the last standard count and the new one. This
causes the tolerance to be exceeded because of source decay.
After the old standard counts are erased, four new standard
counts should be taken.
Press 〈YES〉 to accept the new standard count and enter it into memory. If
〈NO/CE〉 is pressed, the new count is not accepted and the display returns
to show the old values.
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