Optical Dissolved Oxygen Sensor

Optical Dissolved Oxygen Sensor is an industrial online dissolved oxygen sensor based on optical fluorescence technology.It features fast response, no polarization, no electrolyte consumption, strong anti-interference ability, and long service life.Equipped with RS485/Modbus output, it is widely used in aquaculture, water treatment, environmental monitoring, and biochemical processes.

The Optical Dissolved Oxygen Sensor is a high-precision device designed for accurate and continuous measurement of dissolved oxygen (DO) in water. Based on advanced fluorescence quenching technology, the Optical Dissolved Oxygen Sensor provides stable, drift-free performance without consuming oxygen during measurement. Compared with traditional electrochemical sensors, it offers faster response time, lower maintenance requirements, and longer service life.

The Optical Dissolved Oxygen Sensor operates by emitting blue light onto a fluorescent layer. The presence of oxygen affects the fluorescence lifetime, allowing the sensor to determine dissolved oxygen concentration accurately. Since this method does not rely on membrane permeability or electrolyte solutions, it eliminates the need for frequent membrane replacement and electrolyte refilling. This significantly reduces maintenance costs and improves operational efficiency.

Designed for demanding applications, the Optical Dissolved Oxygen Sensor is not affected by flow rate, pressure fluctuations, or hydrogen sulfide interference. It is widely used in municipal wastewater treatment plants, aeration tanks, aquaculture systems, environmental water monitoring, and industrial circulation water processes. With built-in temperature compensation, the sensor maintains accurate readings under varying environmental conditions.

Constructed with durable, corrosion-resistant materials, the Optical Dissolved Oxygen Sensor ensures long-term reliability even in harsh environments. It typically supports digital or analog signal output, enabling seamless integration with online controllers, PLC systems, or remote monitoring platforms. With high accuracy, strong anti-interference capability, and low maintenance requirements, the Optical Dissolved Oxygen Sensor is an ideal solution for modern dissolved oxygen monitoring.