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YUSHI INSTRUMENTS
Figure 4-7
Figure 4-8
Figure 4-9
There are many ways to calibrate the angle beam probe, the standard test block isn't wedded to the
calibration, and you can also use a pinhole of known depth to do calibration. Theoretically, the smaller
reference reflector is, the more precise the calibration is, but the difficulty of calibration increases
correspondingly. When you use a pinhole to do calibration, you can measure the depth and the horizontal
position of the pinhole to calculate the slope coefficient to calibrate the angle, and then you can use the
depth or the horizontal position value that you measure to calibrate the sound velocity and the probe
zero.
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