Troxler 3411-B, Manual Of Operation And Instruction

Page: 33 / 109

Model 3400-B Series 4-3
NOTE
To verify gauge stability, use the daily log of
moisture and density standard counts.
Assuming the gauge is new or just calibrated, the acceptable
standard count limits are:
For the first four days
± 1% each day for DS (density standard) as compared to the
reference standard count (factory calibrated) value and
±2% each day for the MS (moisture standard) as compared to
the reference standard count
After four days
±1% for DS and
±2% for MS as compared to the average of the last four daily DS
and MS values.
This averaging procedure is maintained until the instrument is
returned to the factory for recalibration. Recalibration requires
the log procedure to be started over. Standard count log sheets
may be found on the last pages of this manual. In the event that
standard counts do not fall into the above percentages, an
instability is suspected. Refer to page 6-3 for more information
about stability (stat) tests.