Hygienic Conductivity Measurement for Food and Life Science Industries

The Endress+Hauser Indumax CLS54D is a digital inductive conductivity sensor designed specifically for hygienic and sterile applications.

Unlike traditional conductive sensors, the CLS54D uses a toroidal inductive measurement principle, where the conductivity signal is generated without exposed electrodes contacting the medium.

This design provides excellent resistance against contamination, corrosion and difficult process conditions, making it suitable for demanding hygienic production environments.

Inductive Toroidal Conductivity Measurement Technology

The CLS54D uses an inductive conductivity measurement principle to provide stable and reliable measurement in a wide range of applications.

Key advantages include:

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  No direct electrode contact with the medium
  
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  Reduced risk of polarization effects
  
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  Reliable measurement in highly conductive liquids
  
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  Suitable for aggressive cleaning processes
  
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  Stable performance during continuous operation
  

The sensor provides a measuring range from 100 µS/cm to 2000 mS/cm, covering many food, beverage and industrial liquid applications.

Hygienic Design with Food-Grade PEEK Material

The CLS54D is designed to meet strict hygienic requirements.

The sensor features:

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  Food-grade virgin PEEK body
  
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  Jointless and crevice-free construction
  
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  Low contamination risk
  
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  Smooth surface finish
  
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  FDA-compliant materials
  
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  USP Class VI biocompatibility certification
  

Its hygienic design supports safe operation in applications where product purity and process cleanliness are critical.

Designed for CIP and SIP Processes

The CLS54D is suitable for cleaning and sterilization processes commonly used in hygienic industries.

Applications include:

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  Cleaning-in-place (CIP) monitoring
  
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  Sterilization-in-place (SIP) processes
  
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  Cleaning solution concentration control
  
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  Return line monitoring
  

The sensor supports sterilization temperatures up to 150 °C for short-term operation, making it suitable for demanding hygienic processes.

Memosens Digital Technology

With Memosens digital technology, the CLS54D provides improved measurement reliability and easier sensor management.

Benefits include:

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  Digital signal transmission
  
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  High data integrity
  
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  Laboratory calibration capability
  
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  Predictive maintenance support
  
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  Easy sensor replacement
  

The sensor stores calibration data digitally, helping simplify maintenance and improve process availability.

Process Monitoring and Quality Control Applications

The CLS54D provides accurate conductivity measurement for various hygienic process tasks.

Typical applications include:

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  Product/water phase separation
  
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  Product/product separation
  
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  CIP cleaning control
  
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  CIP chemical concentration monitoring
  
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  Product quality monitoring
  
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  Leakage detection
  

By detecting conductivity changes in real time, the sensor helps improve process efficiency and reduce product loss.

Key Features

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  Digital Memosens toroidal conductivity sensor
  
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  Designed for hygienic and sterile applications
  
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  Inductive conductivity measurement principle
  
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  Food-grade PEEK hygienic construction
  
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  Jointless and crevice-free sensor design
  
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  Suitable for CIP and SIP processes
  
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  Measuring range: 100 µS/cm to 2000 mS/cm
  
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  Compatible with Liquiline transmitters
  
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  Supports food, beverage and pharmaceutical applications
  
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  EHEDG and 3-A hygienic certified design
  

Typical Applications

Food and Beverage Industry

The CLS54D is widely used in hygienic liquid processing applications.

Typical uses:

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  Beverage production
  
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  Dairy processing
  
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  Brewing systems
  
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  Product quality monitoring
  

CIP Cleaning Process Monitoring

Conductivity measurement is widely used to monitor cleaning solutions.

The CLS54D helps with:

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  CIP chemical concentration control
  
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  Cleaning cycle monitoring
  
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  Cleaning efficiency improvement
  

Pharmaceutical and Biotechnology

The sensor supports strict hygiene requirements in life science processes.

Applications include:

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  Sterile production processes
  
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  Purified water systems
  
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  Cleaning validation
  
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  Process liquid monitoring
  

Product Phase Separation

The CLS54D helps identify conductivity differences between different liquids.

Applications:

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  Product/water separation
  
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  Product changeover monitoring
  
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  Leakage detection
  

This helps reduce product waste and improve production efficiency.

FAQ

What is Endress+Hauser CLS54D?

The CLS54D is a digital inductive conductivity sensor designed for hygienic and sterile applications in food, beverage, pharmaceutical and biotechnology industries.

What does CLS54D measure?

The CLS54D measures liquid conductivity using a toroidal inductive measurement principle.

What is the difference between CLS54D and CLD134?

The CLS54D is a digital Memosens sensor, while CLD134 is a complete conductivity measuring system including transmitter. The CLS54D requires connection to a compatible transmitter such as Liquiline.

Is CLS54D suitable for CIP applications?

Yes. The CLS54D is designed for CIP monitoring and supports hygienic cleaning processes.

What industries use CLS54D?

It is mainly used in food & beverage, dairy, brewery, pharmaceutical and biotechnology industries.