DeFelsko PosiTector 6000 v.7.3 Full Manual User Manual
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A reference standard is a sample of known thickness(es) against
which a user may verify probe accuracy. Reference standards may
be plastic shims, coated thickness standards, or sample parts
whose coating thickness has been determined using other means.
Verify accuracy at the beginning and the end of each work shift.
During the work shift, if the Gage is dropped or suspected of giving
erroneous readings, its accuracy should be re-verified.
In the event of physical damage, wear, high usage, or after an
established calibration interval, the probe should be returned to the
manufacturer for repair or calibration.
Adjustment
Adjustment, or Cal Adjustment, is the physical act of aligning the
probe’s thickness readings to match those of a known thickness
sample (removal of bias) in order to improve the accuracy of the
probe on a specific surface or in a specific portion of its
measurement range. 1-point or 2-point Cal adjustments are
possible.
Probes are factory calibrated and perform an automatic self-check
each time a measurement is taken. For many applications no
further adjustment is necessary after a Reset (pg. 14). Just check
ZERO on the uncoated substrate, then measure. However,
sometimes probe readings can be influenced by changes in
substrate shape, composition, and surface roughness or by
measuring in a different location on the part. That is why Cal
adjustments are made possible. The XX symbol disappears
whenever a Cal adjustment is made.
Where a Cal adjustment method has not been specified, use a
1-point method first. If measuring the included shims on your
uncoated surface reveals inaccuracies, use the 2-point method.
Factory Cal settings can be restored at any time by performing a
Reset (pg. 14), creating a NEW Cal setting (See Cal Memory
pg. 13), or by DELETING the adjustments made to the Cal 1
calibration setting (pg. 13). The XX symbol appears on the display
whenever factory Cal settings are in use.
With “FN” probes, calibration adjustments are made only to the
“F” or “N” mode (stored independently under a particular Cal),
whichever was measured last.