DeFelsko PosiTector PC v.1.1 - Manual (Page 9)

8
Factory Calibration Symbol
This symbol indicates the instrument is measuring with factory
calibration settings. It appears whenever a Reset (pg. 13) is
performed or whenever a new calibration setting (pg. 10) is
created. It disappears whenever a calibration adjustment is made (pg.
8) or when a user calibration is loaded from cal memory (pg. 10). A
probe Zero (pg. 6) does not change the status of the symbol.
Adjustment Techniques
To ensure the gage is working properly, the user should periodically
perform an accuracy check by comparing predicted thickness values
with actual cured thickness values (pg. 6).
If the average of a series of measurements by both instruments is not
within combined tolerances, the PosiTector PC can be adjusted using
one of three methods.
1) 1-point Adjustment - The first and most common choice.
2) 2-point Adjustment - If a 1 Pt Adjust does not improve accuracy.
3) Powder Compensation - If adjustments fail to improve accuracy.
1. Zero the probe (pg. 6).
2. Electrostatically spray approximately 75 microns (3 mils) of powder
onto a flat, smooth metal sample.
3. Open a New CAL setting (optional - pg. 10).
4. Select New Batch (pg. 11).
5. Take at least 3 uncured powder measurements with the PosiTector
PC. Results will be stored in the Batch.
6. Cure the powder.
7. Measure cured thickness with a magnetic or eddy current coating
thickness gage. Record the results.
8. Select "1 Pt Adjust" then select the batch name from Step 4 into
which the previous measurements had been placed.
9. Adjust the displayed batch average lower (-) or higher (+) to match
the cured thickness value.
1 Pt Adjust