capacitive level sensor / hydrostatic / intrinsically safe / for marine applications
LMK 458H



  • Technology:

    capacitive, hydrostatic

  • Other characteristics:

    intrinsically safe

  • Applications:

    for marine applications

  • Process pressure:

    Min.: 60 mbar (0.87 psi)

    Max.: 20,000 mbar (290.08 psi)

  • Process temperature:

    Min.: -25 °C (-13 °F)

    Max.: 85 °C (185 °F)


The LMK 458H has been developed for measuring level in service and storage tanks and is as a consequence certificated for shipbuilding and offshore applications.

A permissible operating temperature of up to 85 °C and the possibility to use the device in intrinsic safe areas enable to measure the pressure of various fluids under extreme conditions. The basis for the LMK 458H is a capacitive ceramic sensor element, which offers a high over-load resistance and medium compatibility.

- nominal pressure: 0 ... 60 cmH2O up to 0 ... 200 mH2O
- accuracy: 0.1 % / 0.2 % FSO
- diameter 39.5 mm
- HART®-communication (setting of offset,span and damping)
- high overpressure capability
- high long term stability

Optional Features:
- IS-version
Ex ia = intrinsically safe for gases and dusts
- diaphragm 99.9 % AI2O3
- different housing materials (stainless steel, CuNiFe)
- screw-in and flange version
- accessoires e.g. assembling and probe flange, mounting clamp