Sensing Range: 8–80″

  • Adjustable Zero & Span
  • Narrow Sensing Beam
  • LED Strength Indicator
  • Short Circuit Protected
  • Wide Temperature Range
  • Analog Current & Voltage Outputs
  • Reverse Polarity Protected
  • Self Contained Barrel Housing
  • Input Voltage 20-30 VDC
  • RPS-401A in PVC Housing
  • Wide Chemical Resistance Range (PVC)
  • Selectable Inverted & Non-Inverted Outputs
Image of RPS-401A-80P self contained ultrasonic sensor.

About the RPS-401A-80P Level Sensor

The RPS-401A-80P analog ultrasonic sensor is mounted in a PVC barrel housing and is completely self contained. It is powered by 20 – 30VDC and is reverse polarity protected. It also has a narrow beam angle which enables it to get into tight places. A flat target can tilt up to 10 degrees and still be detected.

The RPS-401A-80P has two 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 (P1) and span control (P2).

For setup purposes an LED strength indicator is provided. The LED is green when not detecting a target. The color can vary from yellow to bright red when detecting a target depending on how strong the reflected signal is from the target. Yellow indicates a weak signal and bright red indicates a strong signal. The frequency of operation for the RPS-401A-80P is 135kHz. The RPS-401A-80P is constructed of PVC. The barrel measures 30mm x 104mm. A standard 6 foot cable is provided, or a quick disconnect (QD) version is also available.

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Specifications: RPS-401A-80P

Operational Range: Adjustable 8″ to 80″
Power Input: 20 – 30 VDC Reverse
Polarity Protected
Input Current: 90mA Maximum
Ambient Temperature: -40 to 60°C or -40 to 140°F
Humidity: 0 – 95% Non-Condensing
Housing: PVC housing with a PVC sensing face
Outputs: Current Sourcing Analog Output
4-20mA Inverted & Non-Inverted
(Load 0 to 500 Ohms Maximum)
Analog Voltage Output
0-10V Inverted & Non-Inverted
(Load 500 Ohms to Infinity)
Short Circuit Protected
Transducer Frequency: 135kHz
Response Time: 35ms Typical
Weight: Sensor only 4 ounces
Sensor plus cable 9 ounces

Ordering Information