SE 656

Toroidal Conductivity Sensor

Special and precise sensor with high chemical resistance over a very large measuring range, for heavily polluted and strongly oxidizing media

Facts and Features

  • 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

Special and precise sensor with maximum chemical resistance over a very large measuring range. For heavily polluted and strongly oxidizing media.

Corrosion-resistant toroidal sensor for measuring pure water up to maximum conductivities. Insensitive to strongly oxidizing media. Smooth, easy-to-clean design. High accuracy due to electrodeless measurement. Low risk of contamination because of large sensor opening. Also suitable for hazardous areas.

Conductivity measurement of highly concentrated acid and alkaline solutions, hydrofluoric acid, nitric acid, concentrated sulfuric acid, oleum, concentrated alkaline solutions, strongly oxidizing media.




Catalog Excerpts

Catalog Excerpt (en)

2922 |  SE 656 Toroidal Conductivity Sensor
Product Description | Specifications | Product Range
PDF (file size: 0.3 MB)


Brochure (en)

13396 |  Sensors - For measuring pH/ORP, conductivity or oxygen. Digital or analog.
PDF (file size: 2.22 MB)


Manual (en)

2685 |  SE 655(X) / SE 656(X) Toroidal Conductivity Sensors 
PDF (file size: 3.34 MB)

Manual (en)

13990 |  SE655 N-* / SE656N-*
Digital Toroidal Conductivity Sensor
PDF (file size: 0.76 MB)

Certificates / Approvals

EU Declaration of Conformity (en)

14352 |  Induktiver Leitfähigkeits-Sensor Typ SE 655X, SE 656X
Document No. EU181108B | 2018-11-08
PDF (file size: 0.7 MB)

EU Declaration of Conformity (en)

14517 |  Analog Sensors, non Ex
Document No. EU191120A | 2019-11-20
PDF (file size: 0.2 MB)

EC-Type-Examination Certificate (en)

11841 |  Electrodeless Sensor Model type SE 655X / SE 656X
DMT Dokument-Nr. DMT 01 ATEX E 088X | 2018-10-24
PDF (file size: 1.91 MB)

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