SIEMENS SITRANS LR150 Radar Level Transmitter


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Siemens SITRANS LR150: A cutting-edge W band FMCW radar level transmitter equipped with a chemically resistant PVDF sensor, ensuring years of dependable and hassle-free measurement service.


Powered by a 4 to 20 mA loop with HART, this transmitter delivers precise level measurements with a range of up to 15 meters (49.2 feet). Its non-intrusive measurement capability allows for easy installation through plastic vessel tops. Plus, programming is made effortless with Bluetooth connectivity, enabling seamless setup via the SITRANS mobile IQ application on your smart device or locally with an optional HMI.

  • Bluetooth connectivity for easy setup with SITRANS mobile IQ.
  • Optional HMI with pushbutton programming and local diagnostic data.
  • Chemically resistant PVDF sensor.
  • HART 7.0 communication for intelligent integration into your application.
  • W band FMCW radar yields narrow beam with small antenna for superior performance in short range applications.
  • Approved for open air applications outside of a tank.
  • 2 mm accuracy and zero near range distance yields optimum inventory management capability.
  • Compact design fits in limited space installations.
  • Hazardous area variants available for safe use in explosive gas or dust environments

Product Data Sheet – Siemen SITRANS LR150 Radar Transmitter

Operation Manual – Siemen SITRANS LR150 Radar Transmitter




Radar Level Transmitter



(Measuring Range)

0 … 15 m (0 … 49.2 ft)
Output 4 … 20 mA
Measuring Accuracy ± 2 mm
Operating conditions ‑1 … +3 bar (14.50 … 43.51 psi g)

‑40 … +80 °C (‑40 … +176 °F)

Degree of Protection IP66/IP67
Weight 0.5 kg (1.1 lb)
Electrical Connections M20 or ½” NPT
Explosion Protection IECEx (Dependent on Configuration)
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SIEMENS SITRANS LR150 Radar Level Transmitter

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