Introduction to the Indumax CLS50D

The Indumax CLS50D is a state-of-the-art digital inductive conductivity sensor—part of the Memosens sensor family—designed for highly accurate, reliable measurement of conductivity in a variety of demanding industrial environments.

Key Applications

• Chemical Industry: Ideal for measuring concentrations of acids and bases, and monitoring the quality of chemical products in both tanks and pipes.
• Food & Beverage and Life Sciences: Effective in phase separation of product mixtures within piping systems.
• Wastewater Treatment: Suitable for inlet monitoring to ensure efficient process control.

Core Features & Benefits

Measuring Principle & Range

• Employs inductive (toroidal) conductivity measurement, ensuring no direct contact between sensor electrodes and media—crucial for preventing fouling and maintaining long-term accuracy.
• Offers an exceptionally broad measuring range: from 2 µS/cm up to 2000 mS/cm—spanning six orders of magnitude.

Robust Construction

• Built using chemically resistant materials: PFA (perfluoroalkoxy) or PEEK ( ketone)—both selected for durability under harsh chemical exposure.
• Max operating temperature:
• PEEK version: up to 125 °C (possibly up to 180 °C according to older technical sources)
• PFA version: up to 110 °C
• Max pressure resistance:
• PEEK: up to 21 bar
• PFA: up to 17 bar

Sensor Intelligence & Safety

• Equipped with Memosens digital technology, offering advantages like moisture and corrosion resistance, process integrity, and easy predictive maintenance via onboard data storage.
• Includes an integrated Pt1000 temperature sensor (coated) for accurate temperature compensation.
• Certified for use in hazardous areas, with approvals including ATEX, IECEx, NEPSI, FM, CSA, TIIS, and EAC.
• Rated IP68 / NEMA Type 6, indicating strong protection against dust and long-term water immersion.

Ease of Use & Maintenance

• Features dirt-repellent surfaces and a large sensor opening to minimize fouling and clean-up requirements.
• Supports long-distance wiring—up to 55 m (180 ft)—with minimal impact on measurement accuracy.
• Ability to log sensor-specific data enhances traceability and supports predictive maintenance.

Integration & Compatibility

• Designed to work seamlessly with Endress+Hauser transmitters like Liquiline CM44x/R or Liquiline M CM42.
• The analog version (CLS50) is used with devices such as Liquisys CLM223/253.

Summary Table of Specifications

Why the Indumax CLS50D Stands Out

• Optimized for the harshest environments: Chemical resistance, high pressure/temperature tolerance, and no electrode contact make it resilient and reliable.
• Extremely versatile: Offers one of the broadest conductivity ranges in the industry.
• Advanced digital intelligence: Memosens technology elevates data integrity and facilitates smart maintenance strategies.
• Safety-certified: Ready for explosive or hazardous zones.
• Let’s you go the distance: Maintains accuracy even with long cable runs—critical for plant-scale installations.