T.O. 33B-1-1
Figure 1-21.
Angle Beam Distance Calibration with Miniature Angle Beam Block
1.8.2.6.6
Angle Beam Distance Calibration (Miniature Angle Beam Block).
The following procedure works only for a 45o angle beam.
a.
Position the search unit at P-1 and then P-2 as shown in Figure 1-21. Obtain peak signals from R-1
and then from R-2.
b.
The angle beam metal travel at P-1 is 1.00 inch; at P-2, it is 2.00 inches. Use multiple back ref lections
to calibrate longer distances.
CAUTION
Ensure you are using the proper transducer and standard matched for the
material you wish to inspect.
EX: A = aluminum transducer
S = steel transducer
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Change 3
