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Proximity & Level Sensor
Max Range: 80 Inches

  • Adjustable Sensing Range
  • Broad Sensing Beam
  • Range: 2 to 40″, or 5 to 80″
  • LED Indicator
  • Adjustable Hysteresis
  • 105-130VAC or 20-30VDC Power
  • Isolated N.O. & N.C. Solid State Relays
  • Limit Switch Style Housing

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About the RPS-150 Sensor

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 frequency of operation is 38.5kHz. There are two ranges available in this model: 2″ to 40″ or 5″ to 80″. The sensor is available with a 120VAC power input or a 20 – 30VDC input. It also features a quick disconnect (QD) receptacle. The housing is constructed of PBT plastic and has standard 30mm x 60mm limit switch mounting dimensions, as well as side holes for mounting the sensor on its side. The output consists of two solid state relays N.O. & N.C., and can switch 2 – 130VAC or VDC up to 100mA DC or 50mA AC continuous. The relay outputs are short circuit protected and isolated up to 1500VRMS.


Operational Range:40″ Models – Adjustable 2″ to 40″
80″ Models – Adjustable 5″ to 80″
Hysteresis:40″ Models – Adjustable 0.5″ to 40″
80″ Models – Adjustable 1″ to 80″
Power Input:AC Models – 105 to 130VAC
DC Models – 20 to 30VDC
Input Current:15 mA VAC or 35 mA VDC
Ambient Temperature:0 to 60°C or 32 to 140°F
Humidity:0% -95% Non-Condensing
Housing:PBT Plastic, Limit Switch Style
Outputs:2 Solid State Relays N.O. & N.C.
Isolated 1500VRMS
2 to 130VAC or VDC
100 mA DC or 50mA AC Continous
Short Circuit Protected
Transducer Frequency:38.5kHz
Response Time:40″ Models – On = 60ms & Off = 60ms
80″ Models – On = 120ms & Off = 120ms
Weight:9.5 ounces
Accuracy:0.187″ or 0.5% (0.005) of the range,
whichever is greater at 70°F.

Ordering Information

Part NumberRangeOutput
RPS-150AC-402″ – 40″2 Solid State Relays N.O. & N.C. – Cable Sold Separately
RPS-150AC-805″ – 80″2 Solid State Relays N.O. & N.C. – Cable Sold Separately
RPS-150DC-402″ – 40″2 Solid State Relays N.O. & N.C. – Cable Sold Separately
RPS-150DC-805″ – 80″2 Solid State Relays N.O. & N.C. – Cable Sold Separately
F32-50011622 meter QD Cable, 1/2″-20 5-Pin 22 AWG
F32-50011646 meter QD Cable, 1/2″-20 5-Pin 22 AWG


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