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[Category : - OTHER- Navigation and orientation- Pneumatic Accessories]
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An ultrasonic transducer includes: a piezoelectric element divided into a plurality of segments; a pulse generator configured to generate a pulse signal that comprises pulses of a certain frequency; and a control circuit that sequentially activates the segments to cause the element to emit a sonic signal, where a controlled delay time between activation of each segment varies the emission angle of the sonic signal so as to compensate for angle changes caused by either changes in Beam refraction or due to Beam Blowing caused by high flow velocity.

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