SITRANS Probe LR is a 2-wire, 6 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries in storage vessels with nominal pressure and temperature, to a range of 66 ft (20 m). The Probe LR is ideal for applications with chemical vapours, temperature gradients, vacuum, or pressure, such as tank farms, chemical storage, digesters, and long-range applications. SITRANS Probe LR has a range of 1 to 65 ft (0.3 to 20 m).

Probe LR Radar Level Transmitter is designed for safe and simple programming using the Intrinsically Safe handheld programmer without having to open the instrument’s lid. It has a standard Uni-Construction polypropylene rod antenna that offers excellent chemical resistance and is hermetically sealed. The Uni-Construction antenna includes an internal, integrated shield that eliminates vessel nozzle interference. SITRANS Probe LR incorporates Process Intelligence ® signal processing and has a high signal- to-noise ratio for improved reliability. Start-up is easy with as few as two parameters for basic operation. Programming is simple using SIMATIC PDM, HART® handheld communicator or the Intrinsically Safe handheld programmer.


  • Tank farms
  • Chemical storage
  • Wastewater wet well

Key Facts

  • Uni-Construction polypropylene rod antenna standard
  • Easy installation and simple startup
  • Programming using infrared Intrinsically Safe handheld programmer, SIMATIC PDM or HART handheld communicator
  • Communication using HART
  • Process Intelligence signal processing
  • Auto False-Echo Suppression of false echoes

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