Ultrasonic transducers work in conjunction with a transceiver those produces electrical pulses. A piezoelectric crystal located inside the transducer converts these pulses into ultrasonic waves that travel in the direction of the material to be measured. When the pulses hit the process material, an ultrasonic echo is reflected back towards the transducer, which converts them back into electrical pulses. This signal is analyzed by the transceiver which performs the level calculation.
