Magnetic Coupling / NIVOMAG®


NIVOMAG MK-200 series magnetic float level switches are used for point level detection and level control of liquids in all types of vessels..
Measurement principal: a non contact coupling system is realised by the permanent magnet of the float placed in the tank that can activate the microswitch situated in the housing mounted on the outside. The great variety of both the top and side mounted versions makes it easy to install the switch in any tank at any location. For the simplest level switching you can select models with fixed hysteresis, while for level control application we offer Nivomag switches with adjustable hysteresis. Models with rubber or silicon sleeves can be applied for contaminated liquids. You can fit the Nivomag switch with an MMK type tester, to check the switching function even when the liquid levels aren’t changing.


  • Operation Operation without power supply
  • Micro-switch separated from the process
  • All wetted parts stainless steel
  • Side or top mounting
  • Fixed or adjustable switch differential
  • Submersible versions
  • Various process connections
  • Operational check via optional tester
  • Flame-proof variants available
  • SIL1 approval


  • Liquids with minimum 0.7 kg/dm3 density
  • Fail-safe and control level switches in closed tanks
  • Ballast tanks on ships
  • Chemical industry
  • Food and beverage
  • Power plants
  • Oil industry
  • Water industry


Ambient temperature:−20°C…+80°C
Process temperature:−40°C…+250°C
Process pressure:up to 25 bar
Output:250 VAC, 10A NO/NC
Process connection:flanges or 2″ thread
Ingress protection:IP65, IP68
Approvals:ATEX, IEC Ex, INMETRO, EAC, DNV GL (Marine), BV (Marine), SIL1