Dakota Digital CMX operation manual Probe - Menu, CAL - Menu

Dakota Ultrasonics

3.2 Probe – Menu

ZERO PROBE: The CMX is zeroed in much the same way that a mechanical micrometer is zeroed. If the CMX is not zeroed correctly, all of the measurements made using the CMX may be in error by some fixed value. The CMX is equipped with an optional automatic or manual zero feature. Refer to the section on page 42, for an explanation of this important procedure.

ZERO COATING: In order to account for very slight electronic differences in transducers of the same type, frequency, and diameter, the CMXDL has been equipped with a “zero coating” feature. This enables the CMXDL to obtain very accurate readings on coatings, eliminating potential errors incurred from slight differences in the manufacturing processes. Refer to the section on page 42, for a detailed explanation.

TYPE: Enables the user to select the type of transducer being used from a chart of transducer types. This provides increased linearity between transducers. Refer to page 38 for a further explanation.

3.3 CAL – Menu

MAT: Select the material velocity from a chart of basic material types when a known sample thickness, or material velocity cannot be obtained. Refer to page 51 for further info.

MATL 1PT: Performs a single point calibration. This option allows the user to automatically calculate the velocity by entering a known sample thickness. Refer to page 45 for further info.

MATL 2PT: Performs a two-point calibration. This option allows the user to automatically calculate the ve locity by entering a second known sample thickness. Refer to page 50 for further info.

VELOCITY: Function to calibrate the CMX by setting the velocity to a known material velocity. Refer to page 45 for further info.

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