Olympus Sonic 1200S/HR, Руководство пользователя

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Applications 69
variations, and couplant thickness. In the Multiple Echo mode, the ultrasonic echoes being
measured only include material thickness. Compensation for these offsets in the Multiple Echo
mode is not required.
5.1.3 Alternate Calibration Test Method - Multiple Echo, 1.0 to
10.0” of Steel
Notice that several multiple echo signals can be observed during the thickness calibration and
testing. These echoes can be used to calibrate over a wider range than when using the first echo
technique. This method is especially useful if there is only one known thickness available.
For example, using only a 1 inch steel block (B1 Block), calibration of 1 to 10 inches or more
can be performed. In highly attenuative materials, (that is, cast materials), it may not be
possible to obtain multiple echoes over the desired thickness range, limiting this technique.
The same accessories (transducer, cable, couplant) are used except a block of only one known
thickness is required, such as a B1 Block with a 1 inch thickness.
1. Connect the transducer by cable to either instrument BNC.
2. Turn on instrument power and adjust the operating controls as follows:
To select and change the following parameters, press the menu soft key below the selected
menu box, then rotate the SmartKnob™ or press the INC/DEC arrow keys to change the value.