Stork Solutions

LMK 331 Screw-In Level Transmitter

Introducing the LMK 331 Screw-In Transmitter: The ultimate solution for precise level and process measurement. Designed with utmost precision, it is your go-to choice for accurately measuring pressures of liquids, oils, and gases. Thanks to its semi-flush pressure sensor, this versatile transmitter can even handle more viscous or polluted media. For those working with aggressive substances, we highly recommend the PVDF pressure port version, built to withstand the harshest environments. To cater to various needs, we offer additional features such as the intrinsically safe version and the functionally safe version (SIL 2). Explore the wide range of possibilities with LMK 331.

  • Range: from 400 mbar up to 60 bar
  • Outputs: 4 … 20 mA/ 0 … 20 mA/ 0 … 10 V
  • Main Features: IS-Version Ex ia, SIL2

Product Highlights

The LMK331 Level Transmitter is a versatile and reliable instrument designed to measure nominal pressure ranging from 0 … 400 mbar up to 0 … 60 bar. It offers two output signal options: a 2-wire configuration providing a 4 … 20 mA signal, and a 3-wire configuration offering a 0 … 20 mA or 0 … 10 V signal. Upon request, other output signals can also be accommodated. One of its special features is its pressure port, which is available in two options: a G 3/4″ flush port suitable for pasty and impurity-laden media, and a PVDF pressure port ideal for aggressive substances. The LMK331 Level Transmitter also offers optional versions such as an IS-version (for 4 … 20 mA / 2-wire configuration), which is intrinsically safe for gases and dusts, and a SIL 2 application compliant with IEC 61508 / IEC 61511 standards. Furthermore, it can be tailored to meet customer-specific requirements, making it a highly customisable solution.


  • Plant and machine engineering
  • Energy industry
  • Environmental engineering (water-sewage-recycling)
  • Medical technology 

To download the latest datasheet click here: LMK 331

Additional information


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