DeFelsko PosiTector UTG Gebrauchsanweisung Seite 9

Zero
PosiTector UTG probes must be "zeroed" after a reset and
periodically during use. The Zero process compensates for probe
wear and temperature. To maintain the best accuracy, perform a
Zero when the ambient temperature changes.
PosiTector UTG C, UTG CA, UTG CX,
UTG CLF and UTG M probes:
1. Make sure the Gage is ON and the probe is wiped clean.
2. Apply a single drop of couplant onto the included zero block
(PosiTector UTG CA only) or built-in zero plate located on
the underside of the probe connector. DO NOT apply couplant
directly onto the probe face.
3. Open the Gage menu, navigate to Cal Settings, select
the Zero menu option, and follow the on-screen prompts.
4. When complete, the Gage will double-beep and display "----".
PosiTector UTG P probe only:
1. Make sure the Gage is ON and the probe is wiped clean.
2. Hold the probe in the air away from all objects.
3. Open the Gage menu, navigate to Cal Settings, select
the Zero menu option, and follow the on-screen prompts.
4. When complete, the Gage will double-beep and display "----".
Calibration Adjustment
The PosiTector UTG is factory calibrated. In order for it to take
accurate thickness measurements of a particular material it must
be set to the correct sound velocity for that material. Be aware that
material composition (and thus its sound velocity) can vary from
stated tables and even between lots from a manufacturer.
Adjustment to a sample of known thickness of the material to be
measured ensures that the Gage is adjusted as close as possible
to the sound velocity of that specific material. Samples should be
flat, smooth and as thick as the maximum expected thickness of
the piece to be tested. The
Calibration Adjustment is made to the Gage.
Cal Settings Menu
symbol disappears whenever a
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