Smart DO Sensors for Better Water Monitoring

In the water treatment industry, dissolved oxygen (DO) is one of the most critical monitoring parameters, directly impacting the efficiency of wastewater treatment, compliance of industrial effluent discharge, and the stability of aquatic ecosystems. Achieving high-precision, stable online monitoring under complex working conditions is a common challenge in various water treatment projects. The emergence of intelligent dissolved oxygen sensors provides an effective solution to this problem.

Intelligent dissolved oxygen sensors are specifically designed for online monitoring, with a measurement range of 0–20 mg/L and a resolution of 0.01 mg/L, enabling them to capture minute changes in dissolved oxygen in water bodies in real-time. For aeration tanks in wastewater treatment plants, precise control of dissolved oxygen concentration not only ensures normal microbial metabolism and improves organic matter degradation efficiency but also avoids energy waste caused by over-aeration. In practical applications, intelligent dissolved oxygen sensors help wastewater plants achieve intelligent aeration management.

Regarding communication and system integration, intelligent dissolved oxygen sensors feature a standard RS485 interface and support the Modbus/RTU protocol, allowing direct connection to control systems like PLCs and DCS for remote networking and automated monitoring. They also support 4–20mA analog signal output, making them adaptable to various industrial scenarios. For enterprises advancing smart water system construction, they are almost "plug-and-play," significantly reducing retrofit costs.

Considering the complex and variable on-site environments in water treatment, the structural design of intelligent dissolved oxygen sensors fully embodies industrial-grade reliability. The housing is made of 316L stainless steel, offering excellent corrosion resistance and enabling long-term adaptation to harsh environments such as sewage, saline water, and circulating cooling water. With an IP68 protection rating, it ensures stable operation even when fully submerged or used outdoors. The installation method is highly flexible; the 3/4 NPT threaded interface allows for either submerged installation or easy fixation in pipes and tanks, meeting diverse user needs.

The application range of intelligent dissolved oxygen sensors is extensive. In municipal wastewater treatment projects, they enable precise dissolved oxygen monitoring; in aquaculture, they provide real-time water quality assurance for fish and shrimp growth, preventing losses due to hypoxia; in the food and beverage industry, they ensure production water consistently meets hygiene standards; and in environmental engineering and industrial effluent discharge monitoring, they deliver reliable data support to ensure compliance.