Checkline DFX-7 - Manual (Page 77)

DFX-7 Ultrasonic Flaw Detector
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2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until ZERO is highlighted.
3) Press the LEFT and RIGHT arrow keys to scroll the value. When the
correct zero value is being displayed, proceed to step 8.
4) Alternatively, press the ENTER key to display the Digits Edit Box.
5) Press the UP and DOWN arrow keys to scroll the highlighted value.
6) Press the LEFT and RIGHT arrow keys to scroll the digit locations.
7) Repeat steps 5 & 6 until the zero value is correctly displayed.
8) Press the OK key to set the zero and return to the menu screen, or ESC to
cancel entering the zero.
9) Finally, press the MEAS key to return to the measurement screen.
10.3 Material Velocity Charts
The DFX-7 has two material velocity charts built into the gauge with both longitudinal
and shear material velocities. It should be noted that in order to display the chart
containing the shear wave velocities the TRIG mode must be activated, as we’ve
assumed an angle beam transducer will be used for the inspection process. The
procedure is listed below:
Selecting a Basic Material Type