Dakota Ultrasonics UMX-2 - Manual (Page 45)

Dakota Ultrasonics
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feature. This enables the UMX-2 to obtain very accurate readings on coatings,
eliminating potential errors incurred from slight differences in the manufacturing
processes. The coating zero should be performed on an uncoated section of the
same material or something similar. The procedure is outlined below:
Performing a Coating Zero
1) Press and hold the single UMX-2 button, located on the top end cap, until
the top level menu options begin scrolling on the alpha display. Once this
occurs, the button can now be released. The menu options will scroll one to
the next in a time delayed sequence, and will display all the menu options in
a continuous loop.
2) When ZERO is displayed, immediately press and release the button to enter
the sub menu options. Again, the options will begin scrolling in a continuous
loop (AUTO, MANUAL, COAT).
3) Apply a drop of couplant on the transducer or test material. P lace the
transducer on an uncoated surface of the material and obtain a stable
measurement. Do not remove the transducer.
4) When the desired option is displayed, immediately press and release the
button to set the option in the UMX-2. For this example, COAT has been
selected.
5) Press and hold the button to escape out of the sub menu options at any
time.