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Analog conductivity sensor
Indumax CLS52

Analog conductivity sensor
Indumax CLS52 ©Endress+Hauser
Analog conductivity sensor
Indumax CLS52 ©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.

Toroidal conductivity sensor for hygienic and sterile applications

The Indumax CLS52 inductive conductivity sensor protects your products and processes in the food & beverage industry. It is equipped with a stainless steel temperature sensor that gives you an ultrafast temperature response to measure exactly in separation applications.

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  • Benefits

    • Engineered for quick temperature response

    • Hygienic design avoids contamination

    • Suitable for cleaning-in-place (CIP) and sterilization-in-place (SIP)

    • Low risk of soiling due to encapsulated sensor

    • Insensitive to polarization

  • Field of application

    Indumax CLS52 measures toroidal conductivity especially in food & beverage applications, where a fast temperature response is needed, such as:

    • Alkaline/acid concentration control in remaking

    • Phase separation of product/water and product/product...

Features and specifications



  • Measuring principle


  • Application

    Food, pharmaceuticals

  • Characteristic

    Hygienic inductive measuring cell for conductivity measurements, concentration control, CIP-control, cleaning and phase separation.

  • Measurement range

    0.1 to 2000 mS/cm

  • Measuring principle

    Inductive conductivity measurement.

  • Design

    Hygienic inductive conductivity cell with an outside temperature sensor for a faster temperature reading.

  • Material

    Sensor: PEEK
    Heat contact nut: stainless steel 1.4435
    Sealing: Chemraz

  • Dimension

    Coil: outside diameter: appr. 47 mm inside diameter: appr. 15 mm

  • Process temperature

    Max. 125°C (short time up to 140°C)
    max. 257°F (short time up to 284°F)

  • Process pressure

    Max. 16 bar at 90 °C
    (Max. 232 psi at 194 °F)

  • Temperature sensor

    Integrated Pt100 in a heat contact nut

  • Ex certification


  • Connection

    Process connections: dairy fitting, Clamp, thread 1,5", Varivent, APV, Perlick, SMS cable: fixed cable connection.

  • Ingres protection


  • Additional certifications

    Calibration certification.

Documents / Manuals / Software

Accessories / Spare parts

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