Product Overview

The Endress Hauser CLS15-B1M2A is a high-precision 2-electrode conductivity sensor belonging to the Condumax CLS15 series, specifically engineered for measuring conductivity in pure water, ultrapure water, and low-conductivity media. This analog sensor is widely recognized as an ideal solution for low-range conductivity measurement applications, delivering reliable and accurate performance even in demanding industrial environments including hazardous areas.

With a cell constant of k = 0.1 and a measuring range of 0.1 to 200 uS/cm, the CLS15-B1M2A is optimized for applications requiring exceptional sensitivity at low conductivity levels. The sensor incorporates an integrated Pt100 temperature sensor for automatic temperature compensation, ensuring measurement accuracy across varying process temperatures. The device features a fixed 5-meter cable with 3/4 inch NPT process connection, facilitating straightforward installation in a variety of mounting configurations.

Technical Specifications

Key Features

• High-precision 2-electrode design provides reliable and accurate measurement for low-conductivity media including pure water and ultrapure water applications.

• Cell constant of k = 0.1 with measuring range from 0.1 to 200 uS/cm delivers exceptional sensitivity for critical low-range conductivity monitoring.

• Integrated Pt100 temperature sensor enables automatic temperature compensation, ensuring measurement accuracy despite process temperature variations.

• Polished measuring surface resists fouling and simplifies cleaning, reducing maintenance requirements and extending service life.

• Wetted materials including 316L stainless steel and PES provide excellent chemical resistance for demanding process media.

• ATEX II 1G EEx ia IIC hazardous area certification permits installation in potentially explosive atmospheres (Zone 0, 1, 2).

• Fixed 5-meter cable with 3/4 inch NPT process connection simplifies installation and ensures reliable electrical connection.

• Low maintenance design with long operational life delivers cost-effective conductivity monitoring over extended periods.

• Compatible with Endress Hauser Liquisys CLM223 transmitters and other standard conductivity analyzers.

Applications

The Endress Hauser CLS15-B1M2A conductivity sensor is deployed across a broad range of industries requiring precise low-range conductivity measurement. In water treatment applications, the sensor monitors ion exchanger performance, reverse osmosis membrane integrity, and final product water quality in pharmaceutical and electronics manufacturing. In power generation facilities, it provides critical monitoring for boiler feedwater, condensate polishing systems, and cooling water treatment.

Additional applications include semiconductor chip cleaning processes where ultrapure water conductivity must be maintained below 0.1 uS/cm, food and beverage production requiring CIP (clean-in-place) rinse water verification, and distillation systems for solvent recovery and process water purification. The sensor's hazardous area certification enables deployment in chemical plants and oil and gas facilities where explosive atmospheres may be present. When paired with the Liquisys CLM223 transmitter, the CLS15-B1M2A supports HART, PROFIBUS DP, and PROFIBUS PA communication protocols for seamless integration into SCADA and DCS systems.