RPS-450 Ultrasonic Proximity Sensor

  • Self Contained
  • Range 5 to 30 or 10 to 72 in.
  • Narrow Sensing Beam
  • High Frequency
  • LED Indicator
  • Potentiometer For Set-up
  • Environmentally Sealed Housing
  • Operates in Hostile Environment
  • Operating Voltage 120VAC (60Hz)
  • N.O. N.C. Solid State Relay Outputs
  • RPS-450 in Plastic Housing
  • RPS-475 in Stainless Steel Housing
View Data Sheet

The RPS-450 are stud-mount, completely self-contained, 120VAC powered ultrasonic proximity sensors. These sensors are range or distance sensitive, enabling the sensors to detect objects only within the desired range and rejecting others. The RPS-450 are solid state sensors including their solid state outputs, therefore having nearly unlimited life. The sound source operates in the ultrasonic spectrum and is therefore not heard. For initial setup purposes, a built in potentiometer and LED indicator are provided. The LED indicator illuminates when the ultrasonic wave from the sensor is reflected back to the sensor within the preset range. These sensors provide precise proximity or level sensing regardless of color, density, or transparency. They are equally effective on liquid, metal, plastic, and glass targets.

Proximity Detection

Proximity detection is the detection of an object in a given range. The detection range of the RPS-450 is controlled by a potentiometer located on the rear of the sensor. Any object within the desired range is detected, while objects out of range are ignored. The detect point is independent of size, material, or reflectivity of the object.

Operational Range: Adjustable 5″ to 30″
Adjustable 10″ to 72″
Power Input: 120 VAC
Input Current: 30 Milliamps
: 0% – 95% Non-Condensing
Ambient Temperature: 0°C to 60°C(32°F to 140°F)
Housing: Transducer: RPS-450 is Plastic Sensing Face
Output: 420D Valox plastic with a
PVC sensing face.
Output: Current Sourcing Analog Output 4 – 20mA Inverted & Non-Inverted Analog Voltage Output
0 – 10 volts Inverted & Non-Inverted Short Circuit Protected
Isolation 2500
Off State Leakage – .001A Maximum
Load Current – .005 to 1A
Peak Current (One Cycle at 20A Maximum)
Switching Voltage – 2 to 130VAC
Transducer Frequency: 5″ to 30″
10″ to 72″
212kHz RPS-450: 150kHz

A-Angle of Tilt
B-Beam Spread
C-Wiring Diagram. -Load conn. to Sensor Power
D-Wiring Diagram. -Load conn. to External Power
E-Mounting Dimensions


5″ – 30″
10″ – 72″

N.O. N.C. Solid State Relays
N.O. N.C. Solid State Relays