RPS-401A, RPS-426A

Analog Ultrasonic Sensors

RPS-401A in Plastic Housing
RPS-426A in Stainless Steel Housing

  • Adjustable Zero & Span
  • Various Sensing Ranges
  • Narrow Sensing Beam
  • LED Strength Indicator
  • Short Circuit Protected
  • Reverse Polarity Protected
  • Analog Current & Voltage Outputs
  • Inverted & Non-Inverted Outputs
  • Self Contained Barrel Housing
  • Input Voltage 20 – 30 VDC
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About the RPS-401A, RPS-426A Sensors

The RPS-401A, RPS-426A analog ultrasonic sensor is mounted in a 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 8 degrees and still be detected. The RPS-401A, 426A has 2 short circuit protected analog outputs, 4 – 20mA and 0 – 10 VDC. These outputs can easily be inverted and can be scaled over almost any range by means of adjusting the zero control (P1) & span control (P2).

For setup purposes a LED strength indicator is provided. This LED is Green when not detecting and fades to Red as a target moves into place, depending on how much reflected signal is coming back from the target. The frequency of operation for the RPS-401A is 175kHz for the 4 – 40″ and 135kHz for the 8 – 80″. The RPS-426A has an 8 – 80″ range and operates at a frequency of 150kHz. The RPS-401A barrel is constructed of PVC plastic, and the RPS-426A is Stainless Steel. The barrel measures 30mm x 104mm. A standard 6′ cable is provided, or a quick disconnect (QD) version is also available.

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Specifications:

Operational Range:40″ Models – Adjustable 4″ to 40″
80″ Models – Adjustable 8″ to 80″
Power Input:20-30 VDC
Reverse Polarity Protected
Input Current:90mA
Ambient Temperature:0 – 60°C or 32 – 140°F
Humidity:0 – 95% Non-Condensing
Housing:RPS-401A – PVC with PVC sensing face
RPS-426A – 303 Grade Stainless Steel with PPS and
PTFE sensing face
Outputs:Analog Current Sourcing Output
4 – 20mA Inverted & Non-Inverted
Load 0 Ohms to 500 Ohms

Analog Voltage Output
0 – 10V Inverted & Non-Inverted
Load 500 Ohms to infinity
Short Circuit Protected

Transducer Frequency:40″ Models – 175kHz
80″ Models – 135kHz
Response Time:40″ Models – 16ms
80″ Models – 35ms
Weight:RPS-401A Models – 7 oz.
RPS-426A Models – 11 oz.

Ordering Information

Part NumberRangeOutput
RPS-401A-404″ – 40″0 – 10VDC and 4 – 20mA Analog
RPS-401A-808″ – 80″0 – 10VDC and 4 – 20mA Analog
RPS-401A-40QD4″ – 40″0 – 10VDC and 4 – 20mA Analog – Cable Sold Separately
RPS-401A-80QD8″ – 80″0 – 10VDC and 4 – 20mA Analog – Cable Sold Separately
RPS-426A-404″ – 40″0 – 10VDC and 4 – 20mA Analog
RPS-426A-808″ – 80″0 – 10VDC and 4 – 20mA Analog
RPS-426A-40QD4″ – 40″0 – 10VDC and 4 – 20mA Analog – Cable Sold Separately
RPS-426A-80QD8″ – 80″0 – 10VDC and 4 – 20mA Analog – Cable Sold Separately
F32- 50011832 meter Cable for QD version, M12 4-Pin 22 AWG
F32- 50011865 meter Cable for QD version, M12 4-Pin 22 AWG

Technical Information