YUSHI INSTRUMENTS
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3.5.5 Work Piece Thickness
On the work piece thickness submenu, you can set the work piece thickness in the vertical direction
of the detection plane. When using angle beam probe, the positioning of the vertical depth of the flaws
need this value set. The reason is that when non-primary reflection is used in the detection, if the work
piece thickness is not considered, it will result that the instrument might produce an outcome that the
vertical depth value is larger than the actual thickness of the work piece when it automatically measure
the vertical depth.
Select the probe menu, press (up) or (down) to select the work piece submenu. Then
press (left) or (right) to adjust the value.
Note: the adjustment range: 0-999.9mm. When you adjust the values, you can press Ok to set the
steps, which are divided into 0.1, 1, and 10.
3.6 Curve Menu
Owing to the diffusion and attenuation of the sound velocity, the echo heights of the reflectors of
the same size depend on the distance between the reflector and the probe. The distance amplitude curve
is made according to different reference reflectors which are the same size but different in their depths,
and a curve diagram mode displays the influences and the changes. When the DAC curve is being made,
the material of the reference block with artificial flaws should be same as the work piece to be tested.
Note: When the DAC curve finished is activated, if you adjust some parameters, the prompt line
will display "a DAC curve has been made, the parameter is locked", if you really need to change the
parameter, you can close the DAC curve, and the DAC echo will be cleared. A new DAC curve will be
made after the adjustment.
Press to enter the DAC menu.
3.6.1 DAC Echo
Select the DAC menu, press (up) or (down) to select the DAC echo submenu. Then
press (left) or (right) to adjust the value.
Note: The functional option of the DAC echo is used to display the current number of the echo
reference points, the maximum quality is 9, and confirm the echo reference points.
