Dakota Ultrasonics DFX-8 plus MANUAL2 - Manual (Page 105)

DFX-8
Ultrasonic Thickness Gauge
101
9.3 Zero Coating
In order to account for very slight electronic differences in transducers of the same
type, frequency, and diameter, the DFX-8 has been equipped with a “zero coating”
feature. This enables the DFX-8 to obtain very accurate readings on coatings,
eliminating potential errors incurred from slight differences in the manufacturing
processes. The procedure is outlined below:
Performing a Coating Zero
1) Press the MULTI MODE key once to activate the measurement mode
options.
2) Use the UP and DOWN arrow keys multiple times using the left button
wheel to scroll through the sub menu items until Coating Only (CT) mode is
highlighted.
3) Press the MEAS key to select the measurement mode and return to the
measurement screen.
4) Apply a drop of couplant on the transducer and place the transducer in
steady contact with the probe zero disk (battery cover) and obtain a steady
reading.
Note: The coating measurement displayed will potentially be a value greater or
less than 0.
5) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right and the ESC key multiple times to tab left until