Stainless Steel Level Sensor | Flush Probe | LMK307

Fully Submersible, Very Compact Ø27mm and Flush Mounted


The LMK307 stainless steel level sensor is only 27mm in diameter and has a flush-mounted ceramic sensor giving it excellent media compatibility.  Together with its IP68 continuous submersion rating, it is ideal to use in water, wastewater and leachate applications such as drinking water system, groundwater monitoring, stormwater systems, water recycling and wastewater treatment plants.

Plus, thanks to its optional IS and EX ia approvals, the stainless steel level sensor it is also suitable for liquid level monitoring in fuel storage, fuel tank and biogas farms.

The LMK307 stainless steel level sensor offers optimum resolution through its low noise characteristics coupled with very good accuracy of 0.5 % full-scale output and excellent long-term stability.

Need a lower range or narrower level sensor? Try our borehole water level sensor for measurements as low as 0-1mWG with only a 19mm diameter.


  • 27mm Diameter
  • Ranges: 0-4 mH2O up to 0-250 mH2O
  • Outputs: 2 wire 4-20mA, 3 wire 0-20mA / 0-10V
  • Environmental Protection: IP68 Fully Submersible
  • Accuracy: 0.5 % FSO
  • Optional IS / EX ia Versions
  • Very Compact Only 27mm Diameter
  • Ideal for Water, Wastewater & Leachate Applications
  • Flush Mounted Ceramic Sensor
  • Fully Submersible & Long-Term Immersion Protected
  • Excellent Long-Term Stability
  • Excellent Linearity
  • Optional Intrinsically Safe and ATEX EX ia Versions
  • Customisation Available


lmk307 stainless steel level sensor outline


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