Dakota Digital MX-5 operation manual Two Point Calibration

MX-5 Ultrasonic Thickness Gauge

Two Point Calibration

NOTE: This procedure requires that the operator has two known thickness points on the test piece that are representative of the range to be measured.

1)Make sure the M X-5is on.

2)Perform a Probe-Zero (refer to page 13)

3)Apply couplant to the sample piece.

4)Press the transducer against the sample piece, at the first/second calibration point, making sure that the transducer sits flat against the surface of the sample. The display should show some (probably incorrect) thickness value, and the Stability Indicator should have nearly all its bars on.

5)Having achieved a stable reading, remove the transducer. If the displayed thickness changes from the value shown while the transducer was coupled, repeat step 4.

6)Press the CAL key. The IN (or MM) symbol should begin flashing.

7)Use the UP and DOWN arrow keys to adjust the displayed thickness up or down, until it matches the thickness of the sample piece.

8)Press the Probe key. The display will flash 1OF2. Repeat steps 3 through 8 on the second calibration point. The MX-5will now display the sound velocity value it has calculated based on the thickness values that were entered in step 7.

9)The MX-5is now ready to perform measurements within this range.

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