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Digital conductivity sensor
Indumax CLS54D

Digital conductivity sensor
Indumax CLS54D ©Endress+Hauser
Digital conductivity sensor
Indumax CLS54D Side View ©Endress+Hauser
Digital conductivity sensor
Indumax CLS54D Close-Up ©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 hygienic and sterile applications

The Indumax CLS54D inductive conductivity sensor protects all of your products and processes that must meet the strictest hygienic and sterile demands. Its outstanding performance combined with a unique hygienic design ensures highest safety and quality of your products. Thanks to Memosens digital technology, Indumax CLS54D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration, and facilitates predictive maintenance.

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  • Benefits

    • Unique hygienic design avoids contamination

    • With all hygienic certificates required in hygienic and sterile applications, compliant with EG 2023/2006 and 1935/2004

    • Food grade virgin PEEK body without joints nor crevices

    • Certified biocompatibility according...

  • Field of application

    Indumax CLS54D measures toroidal conductivity in hygienic food & beverage and life science applications, such as:

    • Phase separation of product/water and product/product mixtures in pipe systems

    • Control of CIP (cleaning in place) processes in the return...

Features and specifications



  • Measuring principle


  • Application

    Food, beverage and pharmaceutical industries, biotechnology, dairies, breweries

  • Characteristic

    Specifically intended for use in hygienic applications and especially suitable for following applications:
    Phase separation, control of CIP, concentration control, product monitoring, leakage monitoring

  • Measurement range

    100 µS/cm to 2000 mS/cm
    Cell constant k: 6.3 1/cm

  • Measuring principle

    Inductive conductivity measurement

  • Design

    Hygienic design with food-grade virgin PEEK body in jointless and creviceless design including all hygienic certifications

  • Material

    In contact with medium: virgin PEEK

  • Process temperature

    -10 °C to 125 °C (14 °F to 257 °F)
    Sterilization: 150 °C at 6 bar abs for max. 60 min

    (302 °F at 87 psi abs for max. 60 min)

  • Process pressure

    13 bar abs up to 90 °C (188.5 psi abs up to 194 °F)

    9 bar at 125 °C (130.5 psi abs at 257 °F)

  • Temperature sensor

    Pt1000 (Class A according to IEC 60751)

  • Connection

    Dairy pipe, Aseptic-fitting, Clamp ISO 2852, SMS-2", Varivent N DN 40-125, Neumo Biocontrol D50

  • Ingres protection

    IP68 / NEMA type 6P

  • Additional certifications

    FDA, EHEDG, 3-A
    Biological reactivity USP class VI part <87> and <88>

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