
Ultrasonic sensors cover ranges of 2cm…8
Ultrasonic sensors work with the travel time measurement of high-frequency sonic impulses.
The periodically sent impulses are reflected on the object and return as an echo to the sensor .
The integrated electronic ranges the object.
This operating principles enables a detection of the most varying objects even under difficult conditions like contamination nearly independent from the colour or the surface of the object.
Even objects as transparent as glass or transparent foils can be detected.