SE 656

Completing the Loop

SE 656 Toroidal Conductivity Sensor


The SE 656 is a corrosion-resistant toroidal conductivity sensor for measuring pure water up to maximum conductivities of 2,000 mS/cm. The SE 656 is insensitive to strongly oxidizing media. The sensor features a smooth, easy-to-clean design. It features high accuracy due to electrodeless measurement. It is at low risk of contamination because of a large sensor opening. It is suitable for hazardous locations.



  • Robust design
  • Extremely large measuring range due to inductive measuring principle
  • Insensitive to contamination
  • No process-wetted electrodes
  • Extremely high chemical resistance (PFA)
  • Measurement in hazardous locations

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