Dakota Ultrasonics DFX-7 plus MANUAL1 - Manual (Page 93)

DFX-7 Ultrasonic Flaw Detector
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3) Press the ENTER key to display the list of material types.
4) Press the UP and DOWN arrow keys to scroll through the material list until
the appropriate material is highlighted.
5) Press the ENTER key to overwrite the material type and display the menu
items with the new material type selected.
6) Finally, press the MEAS key to return to the measurement screen and begin
taking readings.
11.6 Material Velocity
The DFX-7 has a built in feature to manually adjust the material velocity to a know
value in the calibration section of the DFX-7. It should be noted that this does not
calculate the zero value like the two point calibration option does. Therefore, if the
material velocity is changed you should check the calibration. The procedures for
adjusting the velocity are outlined below:
Adjusting Velocity