DeFelsko PosiTector 200 v.1.2 - Manual (Page 3)

Page 3
Introduction Introduction
Operation Overview Operation Overview
The PosiTector 200 is a hand-held Coating Thickness Gage that uses a non-
destructive ultrasonic principle to measure coating thickness on a wide variety of
substrates.
The PosiTector 200 probe emits a high frequency sound pulse that travels into the
coating via a coupling gel and reflects from ANY surface that is different in density.
Coating thickness readings are obtained by measuring the time taken for the
ultrasonic signal to propagate from the probe to the coating/substrate interface and
back. The travel time is divided by two and multiplied by the velocity of sound in the
coating to obtain the thickness of the coating.
1. Turn the Gage ON (see Power-Up below)
2. ZERO the probe (see pg.6)
3. ADJUST to a known thickness, if necessary (see pg.7)
4. MEASURE the part (see pg.4)
Typical Display
Current Measurement
thou/mils Unit of Measurement
Power-up / Power-down Power-up / Power-down
The PosiTector 200 powers-up when or is pressed. On power-up dashes are
displayed. To preserve battery life, the Gage powers-down after a period of no
activity. To power-down manually, hold both buttons down for at least 5 seconds. All
settings are retained during power-down.
The PosiTector 200 interprets the
largest “echo” within the Gates as
the coating/substrate echo.
Couplant
Probe
Coating
Substrate
Primer