Measurement principle Ultrasonic Sensors
Ultrasonic sensors measure without contact the distance to the measurement object, regardless of color and material. Ultrasound is a high-frequency oscillation emitted by the sensor, which is reflected on the measurement object and is received back in the form of an echo. From the travel time of the sound, the sensor calculates an analog output signal proportional to the distance. A classic application for ultrasonic sensors is level measurement.