Velocity; Thickness - DeFelsko PosiTector UTG Quick Start Manual

When checked, the Cal Lock icon appears and the current Cal Settings are locked to
prevent further user adjustments. Uncheck to make further adjustments.

Velocity

If the sound velocity for the test material is known, the Gage can be adjusted to that
specific sound velocity.
Adjust the display down (-) or up (+) to the desired velocity. Holding the (-) or (+)
buttons increases the rate of change. Press the center navigation button when the
desired velocity is reached.

Thickness

The most common method of adjustment is to measure a sample of known thickness.
Select a reference standard of material as close as possible in composition to the
intended application. For best results, the thickness of the reference standard should be
equal to or slightly greater than the thickness of the part to be measured.
1. Apply a drop of couplant onto the reference standard.
2. Measure the reference standard.
3. Lift the probe and adjust down (-) or up (+) to match the reference thickness.
4. Press OK to the store the adjustment and exit.
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