DeFelsko PosiTector SPG v.1.1 Full Manual - Manual (Page 8)

5
Why is Measurement Important?
Steel is often abrasive blast cleaned or otherwise roughened prior
to painting. The peak-to-valley height of the resultant surface
profile is an important factor in the performance of applied
protective coatings.
Low profile may reduce coating bond strength (adhesion). Too high
and the peaks may receive insufficient coverage and possibly rust
prematurely. The costly application of more coating may be
required if the profile is too high.
For these reasons, surface profile should be measured prior to
coating application to ensure that it meets contract specifications.
How to Measure How to Measure
1. Remove the protective rubber cap from probe.
2. Power-up Gage by pressing the center navigation
button.
3. Place the probe FLAT on the surface and press down.
4. Lift the probe when you hear a double BEEP.
6. When completely finished, return the Gage to the protective
pouch. There is no need to disconnect the probe from the
PosiTector during storage.