SITRANS Probe LR is a 2-wire, 6 GHz pulse radar level transmitter for continuous monitoring of liquids and slurries in basic storage vessels with nominal pressure and temperature, to a range of 20 m (66 ft).

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  • Easy setup with local HMI with Quick Start Wizard or remote access via EDD 
  • Intrinsically safe infrared handheld programmer for local interface
  • Field proven with rugged encapsulated enclosure based on 10+ years of experience
  • Reliable readings with Process Intelligence advanced echo processing for reliable performance
  • Ready for digitalization with HART connectivity
  • Uni-Construction polypropylene antenna includes an internal, integrated shield that eliminates vessel nozzle interference


Supplementary Components are designed to work with most types of instrumentation to provide enhanced functionality such as remote displays and remote monitoring solutions. Please find more information here.


Don’t forget that the safest engineered level measurement solution includes switches for back-up, overfill, low level and dry run protection. Click here for more information


 20 m (66 ft)
Process Connections Types and Sizes
Threaded: 1½" NPT, BSPT, BSPP
Wetted Parts
Process Temperature
-40 to 80 °C (-40 to 176 °F)
Process Pressure
Up to 3 bar g (43.5 psi g)
10 mm (0.4 inch)
Typical Applications
Basic liquid level measurement, produced water, drilling mud

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As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

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Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


Industry-leading technology for your toughest applications

When you partner with Siemens, you get true application versatility: easy-to-install radar level measurement with flanged, threaded, and sanitary process connections for every application. This broad range of devices are highly reliable and precise, featuring innovative operations and design for your industry and your process.

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