Introducing Endress+Hauser’s Memosens CCS50D Chlorine Dioxide Sensor

Chlorine dioxide is a chemical compound that appears as a red-to-yellowish-green gas at room temperature. It readily dissolves in water and is typically used as a disinfecting agent, especially in the water treatment industry. However, excessive amounts of chlorine dioxide in potable water supplies can be harmful to consumers. Therefore, compliance with water quality industry standards is of utmost importance.

Endress+Hauser’s Memosens CCS50D is a durable, low maintenance sensor specifically designed to ensure safe and efficient dosages of chlorine dioxide in almost any industrial application. Memosens technology works by converting the measured chlorine dioxide level and converting it to a digital signal which is then transferred inductively to a transmitter.



Various industries have unique chlorine dioxide measurement standards and requirements. The Memosens CCS50D is available in different versions to meet the specification of almost any application. The sensor is available in three measurement ranges to detect ClO2 levels ranging from trace (less than 5 mg/l ClO2) to high (up to 200 mg/l ClO2).

The sensor was also designed to be as versatile as possible, thereby allowing for installations in a variety of components including CCA151, CCA250, or immersion assemblies. The device’s rapid response time (t90 < 15s) also allows for near instantaneous views of process parameters, allowing operators to react quickly to process changes.

Another factor that was taken into consideration during the design of the Memosens CCS50D was reliability and uptime. Chlorine dioxide overdoses can be toxic, making continuous monitoring crucial to employee safety. Therefore, better uptime translates to overall increased process and product safety.

The Memosens CCS50D sensor is designed to be robust and durable to guarantee precise and long-term measurements in even the harshest environments. Uptime is further ensured due to the sensor’s fast exchange rate. New sensors can be pre-calibrated in the lab and easily swapped on-site via convenient plug-and-play commissioning with minimal disruption to plant activities.


The Memosens CCS50D sensor can be used in almost any industry or application that uses chlorine dioxide as part of their process operations. Water treatment plants, for example, use chlorine dioxide to help sanitize drinking water. The Memosens CCS50D can, therefore, be used in this application to assist operators in maintaining safe chlorine dioxide dosages in potable water supplies.

Conversely, the Memosens CCS50D can be used to ensure the absence of chlorine dioxide in specific applications such as reverse osmosis procedures in beverage production plants. Other applications for these sensors include monitoring safe levels of chlorine dioxide for:

  • Sterilizing medical and laboratory equipment
  • Reducing pathogen growth in cooling towers and systems
  • Sanitizing food packaging

Learn More from Endress+Hauser

No matter the application, chlorine dioxide gas dosages need to be closely monitored to maintain a safe working environment and to ensure that the quality of the end product complies with industry regulations.

For more Information about the Memosens CCS50D digital chlorine sensor, contact our technical team today. You can also shop online for the CCS50D at


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Have a question? We can help.

Topics: Endress+Hauser Products, Hazardous materials, hazardous, New product, Indicators, Food and Beverage Industry, sensors


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