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Digital conductivity sensor
Indumax CLS50D

Digital conductivity sensor
Indumax CLS50D ©Endress+Hauser
Digital conductivity sensor
Indumax CLS50D ©Endress+Hauser
Digital conductivity sensor
Indumax CLS50D ©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.

Memosens toroidal conductivity sensor for chemical applications

Indumax CLS50D is a digital inductive conductivity sensor for standard, hazardous and high-temperature applications. Benefit from high chemical resistance and long durability thanks to robust materials (PFA, PEEK). Moreover, it is insensitive to soiling and performs reliable and repeatable even in harsh and aggressive media. Thanks to Memosens, CLS50D combines maximum process and data integrity with simple operation. It resists corrosion and moisture and facilitates predictive maintenance.

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  • Benefits

    • High durability and chemical resistance even under harsh conditions

    • Dirt-repellent materials and large sensor opening avoid soiling

    • Wide temperature range and highly resistant materials make the sensor suitable for virtual any application

    • Reliable values...

  • Field of application

    Indumax CLS50D measures toroidal conductivity in:

    • Chemicals:
      - Concentration measurement of acids and bases
      - Quality monitoring of chemical products in tanks and pipes

    • Food & Beverages:
      - Phase separation of product/product mixtures in pipe systems

    • ...

Features and specifications



  • Measuring principle


  • Application

    Chemical industry, process

  • Characteristic

    Analog or digital, inductive conductivity sensor for standard, Ex and
    high-temperature applications

  • Measurement range

    2µS/cm to 2000 mS/cm

  • Measuring principle

    Inductive conductivity measurement

  • Design

    No direct contact with the media because of the sensor coating made of highly resistant material

  • Material

    PEEK or PFA

  • Dimension

    Outside diameter: 47.5 mm (1.87 inch)
    Inside diameter: 15 mm (0.59 inch)
    Inside diameter (PEEK version): 15.5 mm (0.61 inch)

  • Process temperature

    PEEK: max. 125°C (max. 260 °F)
    PFA: max. 110°C (max. 230 °F)

  • Process pressure

    PEEK: max. 21 bar (max. 304.5 psi)
    PFA: max. 17 bar (max. 246.5 psi)

  • Temperature sensor

    Integrated Pt1000

  • Ex certification


  • Connection

    Process connection: NPT1", DN50, AINSI, JIScable: fixed cable connection

  • Ingres protection

    IP 68 / NEMA type 6

  • Additional certifications

    Calibration certification of the cell constant

Documents / Manuals / Software

Accessories / Spare parts

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