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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.
Press-O-Film Replica Tape
Press-O-Film provides a simple way to obtain an impression of a
surface for analysis. It consists of a layer of crushable plastic micro
foam affixed to a 50.8 um (2 mil) incompressible polyester film.
When compressed against a roughened surface, the foam
collapses and acquires an accurate impression, or reverse replica,
of the surface. It is available in a number of grades to
accommodate measurements in different profile ranges.
Placing the compressed tape (replica) into the PosiTector
RTR-H
probe gives a measure of the average maximum peak-to-valley
height of the surface roughness profile. The polyester substrate is
automatically subracted from all measurements.
Quick Start
Quick Start
The PosiTector
SmartLink
powers-up when the LED button is
pressed. To preserve battery life, the PosiTector
SmartLink
powers-down after 5 minutes of no activity. Alternatively, press and
hold the LED button until it turns red and shuts off (approximately
5 seconds).
All probe settings and calibration adjustments are retained within
the PosiTector
SmartLink
, stored measurement data is retained
within the smart device (cell phone, tablet).
