Editor's Choice


Ensuring clean and safe water

October 2025 Editor's Choice Analytical Instrumentation & Environmental Monitoring

Water is a fundamental resource, essential for all life, and it plays a critical role across various industries and their processes. The quality of water is therefore vital, especially in the water and wastewater industry in southern Africa. Effective disinfection methods are required to ensure safe levels of drinking water for human consumption and to ensure that wastewater treatment meets regulatory standards.

Endress+Hauser’s comprehensive range of disinfection sensors is designed to monitor and control disinfectant levels in water treatment processes. These sensors can detect and measure chlorine, total chlorine, free chlorine, ozone and bromine. With disinfection processes set to become increasingly important, the correct sensor for your application is imperative.

The following disinfection sensors are offered by Endress+Hauser:

• Memosens CCS50E for chlorine dioxide: Commonly used in the drinking water network, process water, utilities and reverse osmosis plants.

• Memosens CCS51E for free chlorine: Used in the drinking water network, process water, utilities and swimming pools.

• Memosens CCS55E for free bromine: Used in water desalination plants, swimming pools, thermal baths, process water, marine applications and fish farming.

• Memosens CCS58E: Used in the water treatment process, wastewater, process water and pipes.

Key features and benefits

Endress+Hauser disinfection sensors are equipped with Memosens 2.0 technology. This technology means digital data is transmitted electronically, ensuring high accuracy and reliability. The raw, measured values are easily converted into digital signals, which are then transferred to a transmitter. This eliminates issues previously associated with analogue signal transmission, such as interference and the risk of signal loss.

With Memosens technology, these sensors can be plug-and-play. The sensors are delivered pre-calibrated from the factory, and can be easily connected and commissioned to ensure that the setup is performed seamlessly. Other advantages are:

• Efficient process control: They have a quick response time, ensuring that you can swiftly react to changes in your process and ensure efficient process control.

• Ease of maintenance: They store data, including calibration information. This simplifies sensor maintenance and prolongs the calibration intervals.

• Cost-effective operation: Reagents are not required for operation, reducing the overall operating and maintenance costs.

• Robust and reliable: They operate in harsh environments, including high humidity, extreme temperatures and aggressive chemical conditions.

Municipal water systems

For any municipal water system, maintaining a safe drinking water limit is vital. The Memosens CCS51E is an ideal sensor for this application as it is designed to monitor chlorine levels in drinking water. This ensures that they are within the stipulated regulatory requirements, ensuring the water is safe for human consumption. By ensuring that this process is continuously monitored, any deviations are easily identified, ensuring that corrective action can be quickly taken. The high accuracy and performance of the sensors gives water treatment operators peace of mind knowing that optimal disinfection conditions are being met.

Wastewater treatment plants

In wastewater treatment plants, there are strict regulatory requirements that need to be met while also ensuring optimal operational efficiency. Disinfection plays an important role in these processes. The Memosens CCS58E ozone sensor plays a part by monitoring ozone levels in the wastewater treatment process. When accurate real-time data is available, the disinfectants can be dosed optimally, ensuring that efficient process control takes place. Chemical usage can also be reduced, minimising any environmental impact.

Industrial water reuse

With an ever-increasing focus on sustainability, reusing industrial water has become critical. Endress+Hauser disinfection sensors can be used in industrial water plants to monitor and control the quality of reused water. This ensures that reused water meets the required safety standards and helps to support initiatives for maintaining sustainable water management practices. Industrial plants are able to optimise their water reuse processes, reduce chemical usage and ensure the safety of their water supply. This is particularly important in industries, such as food and beverage, where the quality of water is critical to product safety and quality.

As the demand for high quality water continues to grow, so does the need for effective disinfection processes. Endress+Hauser’s disinfection sensors can be relied upon to provide accurate, cost-effective solutions for monitoring disinfection levels. The company is committed to ensuring excellence in measurement processes and disinfection practices, ensuring that water and wastewater industries are able to meet their disinfection needs, resulting in a sustainable and safe water supply for future generations to come.


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