SNT Sensortechnik AG’s UPL 200 ultrasonic proximity switch is designed for detection up to 200mm. It is available from SICK .
It has a fixed switching distance and no setting elements. It is most suited for lateral approximation of objects, for example on conveyors.
Conventional sensors have a blind range in which they cannot detect. The UPL 200 detects most objects in its blind range due to its Sonarange transmitter and the M30 surface. Only very poorly reflecting or very small objects can be detected only at higher distances. The sensors are IP67 100% waterproof.