Digital Inductive Conductivity Measurement
The CLS50D uses an inductive, or toroidal, conductivity measuring principle. Unlike contacting conductivity sensors, the measurement does not rely on conventional electrodes making direct electrical contact with the process medium.
This principle makes the sensor particularly suitable for demanding process liquids and applications where chemical resistance and long-term durability are important. Endress+Hauser positions the CLS50D for standard, hazardous-area and high-temperature applications.
Memosens Technology for Digital Measurement
The CLS50D is the digital Memosens version of the Indumax conductivity sensor family. Memosens provides a digital connection between the sensor and compatible transmitter, supporting process and data integrity while simplifying sensor handling.
The digital sensor concept also supports sensor diagnostics and maintenance functions, making the CLS50D suitable for modern liquid-analysis installations. Endress+Hauser specifically highlights corrosion and moisture resistance as well as support for predictive maintenance.
Wide Measuring Range
The CLS50D covers a conductivity range from 2 μS/cm to 2000 mS/cm, allowing it to handle a broad range of process liquids.
This wide range is particularly useful in chemical applications where conductivity may vary significantly between different products, concentrations or process stages.
High Chemical Resistance
The sensor is available with PFA or PEEK construction materials selected for demanding process conditions.
These materials provide high resistance to aggressive media and contribute to the long operating life of the sensor in chemical applications. Endress+Hauser also describes the CLS50D as reliable and repeatable in harsh and aggressive media.
Resistant to Soiling
The CLS50D is designed to be insensitive to soiling, helping maintain reliable and repeatable conductivity measurement when the process medium contains contaminants or has a tendency to cause deposits.
This characteristic is particularly useful in industrial applications where frequent sensor cleaning would otherwise increase maintenance requirements.
High-Temperature and Pressure Capability
The maximum process conditions depend on the selected sensor material.
The PEEK version supports up to 125°C and 21 bar, while the PFA version supports up to 110°C and 17 bar. The exact allowable conditions should always be checked against the selected configuration and installation.
Chemical Concentration Measurement
Conductivity provides a useful measurement parameter for monitoring the concentration of selected chemical solutions.
The CLS50D can therefore be used for acid and base concentration measurement as well as quality monitoring of chemical products in tanks and pipes.
Chemical Product Quality Monitoring
Changes in conductivity can indicate changes in product composition or concentration. The CLS50D can be installed in chemical process tanks and pipelines to monitor conductivity as part of process and product quality control.
Food & Beverage and Life Sciences
The CLS50D is also listed for phase separation of products or product mixtures in pipe systems in Food & Beverage and Life Sciences applications.
Conductivity changes can help identify transitions between different process liquids during product changeover or separation processes.
Wastewater Inlet Monitoring
For wastewater applications, Endress+Hauser lists the CLS50D for inlet monitoring.
Conductivity measurement can provide useful information about changes in incoming wastewater and help monitor process conditions at the plant inlet.
Hazardous-Area Applications
The CLS50D is available in configurations with international explosion-protection approvals. Endress+Hauser lists approvals including ATEX, FM, CSA and NEPSI, depending on the selected configuration.
The applicable approval should always be confirmed against the complete order code and installation requirements.
Robust Construction for Industrial Processes
The CLS50D is designed for demanding industrial installations where the sensor may be exposed to aggressive liquids, contamination and elevated process temperatures.
Its combination of inductive measurement, PFA/PEEK materials and digital Memosens technology makes it suitable for applications where both chemical resistance and digital sensor management are required.
Key Features
- Digital inductive conductivity sensor
- Memosens digital technology
- Toroidal conductivity measuring principle
- Measuring range 2 μS/cm to 2000 mS/cm
- High chemical resistance
- PFA and PEEK construction options
- Resistant to soiling
- PEEK: up to 125°C / 21 bar
- PFA: up to 110°C / 17 bar
- Suitable for aggressive process media
- Suitable for chemical concentration measurement
- Suitable for chemical product quality monitoring
- Suitable for phase separation applications
- Suitable for wastewater inlet monitoring
- Hazardous-area configurations available
- Designed for standard and demanding industrial applications
Typical Applications
Chemical Concentration Measurement
Measurement of acid and base concentrations where conductivity provides a suitable indication of chemical concentration.
Chemical Process Quality Monitoring
Continuous conductivity monitoring of chemical products in tanks and pipelines.
Aggressive Chemical Media
Industrial applications involving corrosive or aggressive liquids where a robust inductive conductivity sensor is preferred.
Food & Beverage Phase Separation
Detection of product transitions and phase separation between different liquids in process pipe systems.
Life Sciences Processes
Conductivity-based phase separation and product transition monitoring in suitable process installations.
Wastewater Inlet Monitoring
Monitoring conductivity changes in incoming wastewater to provide information about variations in the wastewater stream.
Hazardous-Area Conductivity Measurement
Conductivity measurement in hazardous process environments using an appropriately certified CLS50D configuration.
FAQ
What is the Endress+Hauser CLS50D?
The CLS50D is a digital inductive conductivity sensor from the Endress+Hauser Indumax family. It uses Memosens technology and is designed primarily for chemical and demanding industrial applications.
What does the CLS50D measure?
The CLS50D measures toroidal electrical conductivity over a range of 2 μS/cm to 2000 mS/cm.
Is the CLS50D a contacting conductivity sensor?
No. The CLS50D uses an inductive/toroidal measuring principle, rather than conventional direct-contact conductivity electrodes.
What is the difference between CLS50 and CLS50D?
The key difference is the sensor interface and technology. CLS50 is the analog version, while CLS50D is the digital Memosens version. Both belong to the Indumax toroidal conductivity sensor family.
Is the CLS50D suitable for corrosive liquids?
Yes. The CLS50D is specifically designed for demanding chemical applications and uses PFA or PEEK construction for high chemical resistance. Endress+Hauser describes it as suitable for harsh and aggressive media.
What is the measuring range of the CLS50D?
The measuring range is 2 μS/cm to 2000 mS/cm.
What is the maximum process temperature?
The maximum process temperature is 125°C for PEEK and 110°C for PFA.
What is the maximum process pressure?
The maximum process pressure is 21 bar for PEEK and 17 bar for PFA.
Can the CLS50D be used in hazardous areas?
Yes. Applicable configurations are available with explosion-protection approvals such as ATEX, FM, CSA and NEPSI. The exact certification depends on the selected configuration.
Can the CLS50D be used for chemical concentration measurement?
Yes. Endress+Hauser specifically lists acid and base concentration measurement as an application for the CLS50D.
Can the CLS50D be used for wastewater?
Yes. Wastewater inlet monitoring is one of the applications listed by Endress+Hauser.
Is the CLS50D suitable for food and beverage applications?
Yes. Endress+Hauser lists the CLS50D for phase separation of products or product mixtures in pipe systems in Food & Beverage applications.
