Width of sampling volumes versus depth and attenuation
The curves below show the width of the sampling volume, measured @ -6dB (on the left graph), and the attenuation (on the right graph) for our standard transducers.
These measurements has been
obtained with our DOP2000
Model 2125 Ultrasonic Doppler Velocimeter
, in clear water (tap water).
Note : the measured widths differ from their theoretical values due to the fact that they are issued from the measurement of the intensity of an echo generated by a small sphere and not from the measurement of the acoustic pressure that appears at particular points inside the ultrasonic field.
Click on each graph to view it in a bigger size.
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1 MHz 14 mm
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1 MHz 10 mm
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2 MHz 14 mm
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2 MHz 10 mm
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2 MHz 8 mm
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2 MHz 5 mm
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4 MHz 10 mm
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4 MHz 8 mm
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4 MHz 5 mm
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4 MHz 3 mm
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8 MHz 10mm
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8 MHz 5mm
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8 MHz
3mm
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10 MHz
3mm
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