Working Principle of Ultrasonic Level Sensor
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Working Principle of Ultrasonic Level Sensor Ultrasonic pulses generated by the transducer (antenna) system, which travel at the speed of sound toward the target medium, are reflected by the surface of medium and received by the transducer system again. Due to the fact that the measureable time lapse between pulse emission and reception by antenna is proportional to the distance between antenna and highest level of target medium, the principle of ultrasonic level instrument can be illustrated as the following equation: S=CxT/2, S: distance, C: velocity of sound, T: time lapse. |