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LMK 458 Level Transmitter for Marine and Offshore

Meet the LMK 458 Hydrostatic Probe, ideal for level measurement in service and storage tanks, especially in shipbuilding and offshore. Certified for challenging conditions, it operates up to 125 °C and is intrinsically safe for measuring various fluids. Featuring a Stork Solutions-developed capacitive ceramic sensor, it ensures accuracy with excellent overload resistance and medium compatibility. Trust the LMK 458 for dependable precision.

LMK 458 Level Transmitter Product Parameters

  • Pressure Ranges: 0 … 40 cmH2O to 0 … 200 mH2O.
  • Output Signal: 2-wire: 4 … 20 mA, others available.
  • Accuracy: High overpressure resistance, long-term stability.
  • Electrical Connections: Various options, including custom requests.
  • Process Connections: Screw-in and flange versions.
  • Media Compatibility: Diaphragm Al2O3 99.9%.
  • Special Features: 39.5mm diameter, multiple certifications (LR, DNV, ABS, CCS), IS-version Ex ia.

Product Highlights

The LMK458 Level Transmitter is a highly versatile and reliable instrument designed for measuring liquid levels in a wide range of applications. It offers exceptional performance with a nominal pressure range spanning from 0 to 40 cmH2O up to 0 to 200 mH2O. The device provides a 2-wire output signal of 4 to 20 mA, and other output signals are available upon request. One of its outstanding features is its compact size, with a diameter of just 39.5 mm. Furthermore, the LMK458 holds prestigious certifications, including the LR-certificate from Lloyd’s Register, DNV-approval from Det Norske Veritas, ABS-certificate from the American Bureau of Shipping, and CCS-certificate from the China Classification Society. It demonstrates exceptional resistance to overpressure and offers high long-term stability. For added flexibility, optional versions are available, such as a diaphragm made of Al2O3 99.9%, different housing materials like stainless steel and CuNiFe, and an IS-version for gas intrinsically safe environments. The transmitter also supports both screw-in and flange versions, and a variety of accessories, including assembling and probe flanges, as well as mounting clamps.


  • Water
    • Drinking water and abstraction
    • Desalinisation plant
  • Shipbuilding/ Offshore
    • Ballast tanks
    • Monitoring of a ship’s position and draught
    • Level measurement in ballast and storage tanks

To download the latest datasheet click here: LMK 458

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