The RPS-150 family of self-contained, wide beam angle, ultrasonic sensors can be used as proximity sensors or level sensors. The advantage of this sensor is that the target does not have to be at right angles with the sensor in order to be detected. A flat target can tilt up to 35 degrees and still be detected. For set-up purposes an LED indicator is provided. When in the non-detect state the LED is Green and when in the detect state the LED is Red. The RPS-150 can be operated in two modes: a proximity and a hysteresis mode.

The RPS-150A analog ultrasonic sensor is mounted in a limit switch style housing and is completely self contained. It is powered by 20-30VDC, and is reverse polarity protected. It also has a wide beam angle which enables it to detect a target that is not at right angles. A flat target can tilt up to 35 degrees and still be detected. The RPS-150A has 2 short circuit protected analog outputs, 4-20mA and 0-10VDC. These outputs can easily be inverted and can be scaled over almost any range by means of adjusting the zero & span control. For set-up purposes an LED signal strength indicator is provided. The RPS-150A ultrasonic sensors can be used as level control devices for liquid level and bulk materials.