Sick LFH Pressure Measurement Sensors


SICK LFH Pressure Measurement Sensors

  • Immersion depth up to 100 m
  • Available with various cable lengths
  • Measuring ranges from 0.1 bar … 1 bar up to 0 bar … 25 bar
  • Stainless steel membrane
  • Hermetically sealed stainless-steel housing with PA protective cap
  • Cable made from PUR, FEP cable is available as an option for aggressive media
  • Optional temperature measurement with integrated Pt100 element
  • Optional surge protection


  • Enables level measurement under difficult conditions where other measurement technologies fail
  • Rugged and reliable through robust mechanical design and high-grade materials
  • For cleaning purposes the probe can easily be taken out of the liquid
  • No openings required in the wall of the vessel

The SICK LFH pressure measurement sensor is a level probe design with a rugged pressure transmitter for continuous level measurement. The liquid column above the  LFH probe creates a hydrostatic pressure which is a direct indicator for the liquid level. Through its permanently connecting cable, the LFH is submerged into the liquid. The precise measurement technology is

The precise measurement technology is integrated in a rugged stainless steel housing. To meet diverse requirements, the LFH level probe is available in two variants, standard and enhanced.

For the enhanced variant there are a number of options available that extend the range of applications significantly including a maximum cable length of 250 m (standard design: 100 m), integrated temperature measurement, surge protection, and a connecting cable with highly resistant FEP sheathing (up to 100 m).


Device TypeLevel Probe
Pressure UnitBar, mWs
Accuracy≤ ± 0.5 % of the span with standard version of p < 0.25 bar
≤ ± 0.5 % of the span with enhanced version of p < 0.25 bar
≤ ± 0.25 % of the span with enhanced version of p < 0.25 bar
≤ ± 0.25 %
≤ ± 0.25 % of the span with standard version of p < 0.25 bar
Of span with enhanced version with p < 0.25 bar
≤ ± 0.5 %
Signal outputsAnalog
Electrical connectionCable Connection


➡ Did you know? T&D Hazardous Area team are trained and certified in the specification and sale of flameproof and explosion-proof equipment, including Crowcon Gas Detectors.

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