Dakota Digital MMX-6 operation manual Two Point Calibration

MMX-6 DL 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 MMX-6 DL is mode. Press the Dual-Multi

on and switched to P-E(pulse-echo) key to toggle modes.

Note: The calibration function has been disabled in E-E(echo-echo) mode. If the CAL key is pressed while in E-Emode, “nO” followed by “CAL” will be displayed.

2)Perform a Probe-Zero (refer to page 14)

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.

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