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  • High Accuracy Ultrasonic Sensor
  • Input Voltage 20-30 VDC
  • Analog Current Output
  • Analog Voltage Output
  • Short Circuit Protected
  • Wide Temperature Range
  • Temperature Compensation
  • Self Contained Sensor
  • Quick Disconnect Connector
  • Stainless Steel Housing

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About the RPS-412A

The RPS-412A is a high accuracy analog ultrasonic sensor (±0.002″ or 0.05% of range, which ever is greater, at 25°C) with a resolution of 0.0005″. The sensor monitors and compensates for air temperature 50 times per second, using the temperature compensation bar located in front of the transducer. The RPS-412A comes in two versions, analog current output or analog voltage output.

The RPS-412A is designed to take advantage of today’s PLC and computer analog input cards. The analog input card will determine the resolution of the system. The analog-to-digital conversion should have, at least, 14 bit resolution. The numerical values programmed into the PLC or computer will determine the zero and span.


ModelRangeInput Current
RPS-412A-10-A3″ – 10″2.286 mA per Inch
RPS-412A-10-V3″ – 10″1.000 V per Inch
RPS-412A-16-A3″ – 16″1.231 mA per Inch
RPS-412A-16-V3″ – 16″0.625 V per Inch


Accuracy:±0.002″, or ±0.05% of range
(which ever is greater)
@ 25°C±0.2% of range from 0 – 50°C
Power Input:65mA Typical
Operating Temperature:0 – 50°C or 32 – 122°F
Humidity:0% -95% Non-Condensing
Output:Analog Voltage Output, Load 500 Ohms to Infinity,
Short Circuit ProtectedAnalog Current Output,
Load 0 Ohms to 500 Ohms Maximum,
Short Circuit Protected
Transducer Frequency:



Stainless Steel



Sample Rate:

20ms Typical

Update Time:

2s Maximum


22 Ounces

Ordering Information

Part NumberRangeOutput
RPS-412A-10-A3 – 10″4 – 20mA Analog Current Output – Cable Sold Separately
RPS-412A-10-V3 – 10″0 – 10VDC Analog Voltage Output – Cable Sold Separately
RPS-412A-16-A3 – 16″4 – 20mA Analog Current Output – Cable Sold Separately
RPS-412A-16-V3 – 16″0 – 10VDC Analog Voltage Output – Cable Sold Separately
F32-50013002 meter QD Cable, M12 5-Pin 22 AWG Shielded


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