Level Switch FLX for liquids

Robust level switch. Measuring principle is conductivity. For level detection of conductive fluids. Application in the food and pharmaceutical industry.



  • Robust and compact
  • All stainless steel
  • Insertion length from 20mm
  • Various process connection
  • Adjustable sensitivity


Technical details

 Insertion length min. max.  20 mm… 2 m and flush version without insertion
 Process temperature  -30 °C…+100 °C (140 °C/45min), option max. 180 °C
 Pressure  Max. 10 bar 
 Process connections  ½ or 1” BSP, flanges and hygienic connections
 Output  Relay or PNP
 Sensitivity  Adjustable
 Power supply  20 - 28 Vdc
 Viscosity   10.000 mm²/s (cSt)
 Protection  IP67
 Sensor material  AISI 316L, + PEEK isolator, option Ceramic for high temperatures
 Electronics housing  AISI 304
 Ambient temperature  -20 °C…+60 °C



Maximum and minimum level detection of liquids in tanks. Minimum level detection in conduits as dry run protection of pumps.



  • Welding nipples for several connections.


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About Klay

Dutch manufacturer of process instrumentation. A flexible organisation and wide diversity in design of products. Our instruments are being used for industrial automation.


Klay Instruments B.V.
Nijverheidsweg 5
7991 CZ Dwingeloo
Tel +31 521 591 550
E-mail info@klay.nl