The dissolved oxygen analyzer is a specialized device for precise measurement of dissolved oxygen in water. It utilizes advanced sensors like the membrane - covered type to swiftly, stably, and accurately obtain dissolved oxygen values. The outer shell, often made of corrosion - resistant engineering plastics or stainless steel, offers good sealing and protection, adapting to various water qualities from clean freshwater to industrial wastewater and seawater. With high measurement accuracy and fast response, it reflects real - time dynamic changes in dissolved oxygen. Widely used in sewage treatment plants for monitoring and optimizing aeration, in aquaculture for real - time dissolved oxygen status and timely aeration, and in environmental monitoring for assessing water self - purification and ecological conditions.