Remote Ultrasonic Level Sensor UL-RM

The UL-RM ultrasonic level sensor is the ideal solution for liquid and solids remote monitoring level applications.

  • Low voltage sensor with built-in cellular modem
  • Remote monitoring, full control and 24/7 virtual support
  • Measuring range up to 60 ft (18.2 m)
  • Non-contact continuous level measurement
  • Self-cleaning, maintenance free operation
  • Plug-and-play installation with simple calibration

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Continuous Level Measurement for Remote Monitoring Applications

The UL-RM remote ultrasonic level sensor from ABM is the ideal solution for liquid and solid remote monitoring level applications. The ultrasonic sensor with built-in cellular modem is plug-and-play, automatically connecting to the ABM secured servers for ease of installation.

The non-contact sensor provides continuous level measurement up to 60 ft (18.2 m) with 4-20 mA output standard and simple push-button or remote calibration. The sensor is continuously powered with 12-30 VDC (3-wire) with multiple range and mounting options.



  • Process tank level and control
  • Inventory level in storage tanks
  • Flood monitoring
  • Wastewater level in tanks
  • Water towers

High Performance, Maintenance Free Ultrasonic Level Sensor.

  • Self-adjusting sensor, automatically eliminates false echoes without user involvement
  • Very uniform polar pattern, negligible side lobes
  • Very uniform near field
  • Very wide frequency bandwidth that produces uniform echoes, short ringing and wide temperature operation
  • No influence from mounting, walls or internal obstructions on sensors performance
  • No influence from temperature, pressure or humidity on measurement
  • Automatically removes condensation and build-up from transducer face
  • Non-contact and self-cleaning nature provides maintenance free operation

Technology Advantage

ABM’s self-adjusting ultrasonic sensors continually monitor conditions in the environment and automatically adjust the transmitted energy, transmitted pulse amplitude and it’s duration, and receiver sensitivity to match to the current tank conditions. This technique allows the receiver to detect only one echo from the measured media while all false echoes are pushed under the noise level and eliminated. The self-adjusting technique also gives the same amplitude of wanted echoes regardless of distance to the target. With one echo only, signal processing is very simple and the certainty of the measured echo being the target is 100%. This makes the ABM sensors very accurate and reliable. In addition, it enables very fast response (up to 20 echoes per second) for fast moving applications such as conveyor belts.

The sensors have very narrow and uniform polar patterns. ABM’s ultrasonic technology has a very wide frequency bandwidth that produces uniform echoes, short ringing, and wide temperature operation.

Operation is plug-and-play with ABM sensors. The self-adjusting nature means there is no need for mapping or profiling the environment or downloading several parameters. These signal process operations commonly used by other brands reduce the certainty in the measured materials level. ABM sensors are smart and automatically adapt without user involvement.

Measuring Range: Up to 60 ft (18.2 m)
Technology: Ultrasonic
Frequency: Application dependent (45, 52, 70, 80, 81 or 148 KHz)
Calibration: Simple push-button or remotely via Sensor Access website
Output: 4-20 mA out standard
Power: 12-30 VDC (3-wire) operation
Communication: Remote via cellular modem
Ambient Temperature: -40 to 60°C (-40 to 140°F )
Enclosure: PVC standard. Aluminum or SS316L optional
Protection Rating: IP68 (NEMA 6)
Transducer: PVC standard. High temperature Teflon or Sanitary SS316L optional
Process Connection: 1″ – 3″ NPT threading
Process Temperature: -40 to 60°C (-40 to 140°F)
Process Pressure: ≤ 2 Bar (29 psi)

Data Sheet: Remote Ultrasonic Level Sensor 3-wire (cellular modem)

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