Digital conductivity sensor
Condumax CLS21D

Memosens conductive conductivity sensor for medium to high measuring ranges

  • ©Endress+Hauser
  • The conductivity of a liquid can be measured using the conductive or toroidal measuring principles. This video shows what it is about and how these measuring principles work.

Condumax CLS21D is a robust conductivity sensor for all process and environmental applications. It provides you with precise and reliable measuring values for an optimum process and product quality monitoring. Better still, the sensor features high chemical, thermal and mechanical stability and high durability. Thanks to Memosens digital technology, CLS21D combines maximum process and data integrity with simple operation. It resists corrosion and moisture and facilitates predictive maintenance.


  • Various designs guarantee optimum adaptation to the process conditions and methods of installation

  • Installation in pipes or flow chambers

  • High chemical, thermal and mechanical stability

  • Quality certificate stating the individual cell constant

Field of application

Measurements in media of medium and high conductivities:

  • Medium separation in medium conductivities (milk/water)

  • Medium separation in high conductivities (alkaline solution/water)

  • Drinking water treatment

  • Drinking water treatment

The cell constant of the sensor is k = 1 cm-1. The measuring range reaches from 10 µS/cm to 20 mS/cm.

With ATEX approval for application in hazardous areas.

Technical information

Documents / Software


Accessories / Spare parts

Success stories


Endress+Hauser (Ireland) Ltd.
Embassy Office Park Exchequer House Kill County Kildare , Ireland
Tel.: +353 (45) 98 92 00
Fax: +353 (45) 86 81 82

Order Information

Place your order
Place your order

Click here to see how you can order from Endress+Hauser

Order Information >>>

Related news