Introduction
Principle & Structure
The dissolved oxygen online analyzer uses the fluorescence method to measure dissolved oxygen. The top of the sensor is covered with a layer of fluorescent material. When the blue light emitted by the sensor irradiates the fluorescent material, the fluorescent material is excited and emits red light. Since oxygen molecules can take away energy (quenching). effect), so the time and intensity of the excited red light are inversely proportional to the concentration of oxygen molecules, and the concentration of dissolved oxygen in water can be obtained by calculation.
Features
The sensor adopts a new type of oxygen-sensitive membrane, with its own NTC temperature compensation function, and the measurement results have good repeatability and stability;
●No oxygen consumption during measurement, no flow rate/agitation requirements;
●Breakthrough fluorescent technology, no membrane and electrolyte, basically no maintenance;
●Built-in self-diagnosis function to ensure accurate data;
Factory calibration, no need to calibrate for one year, can be calibrated on site;
●The distance between the sensor and the transmitter can reach over 100 meters;
●Standard digital signal output, special no-transmitter industrial and mining can realize integration and networking with other equipment;
●Modular installation of sensors to realize plug and play;
●English and Chinese display can be switched, and it is more convenient to use Chinese.
application
On-line monitoring of DO in various processes such as regulating pools, biochemical pools, and effluent in sewage treatment plants;
DO online monitoring in waterworks, surface water, water in various industrial production processes, aquaculture and other industries.