Measurement Principle:

The dissolved oxygen online analyzer uses the fluorescence method to measure dissolved oxygen. The sensor tip is coated with a fluorescent substance. When the blue light emitted by the sensor illuminates the fluorescent substance, it becomes excited and emits red light. Since oxygen molecules can carry away energy (quenching effect), the duration and intensity of the excited red light are inversely proportional to the concentration of oxygen molecules. The concentration of dissolved oxygen in water can be calculated through this process.

Features:

lThe sensor uses a new type of oxygen-sensitive membrane with built-in NTC temperature compensation, ensuring good repeatability and stability of measurement results;

lNo oxygen consumption during measurement, no flow rate/agitation requirements;

lBreakthrough fluorescence technology, no membrane or electrolyte, virtually maintenance-free;

lBuilt-in self-diagnostic function to ensure data accuracy;

lFactory calibrated, no need for calibration for one year, field calibration possible;

lDigital sensor with strong anti-interference capability and long transmission distance;

lStandard digital signal output, enabling integration and networking with other devices without a transmitter;

lEasy and quick on-site sensor installation, plug-and-play;

lReverse polarity protection for sensor power supply;

lProtection against incorrect connection of sensor RS485 A/B terminals to power.

Typical Applications:

lDO online monitoring in various processes of wastewater treatment plants, such as adjustment tanks, biochemical tanks, and effluent;

lDO online monitoring in industries such as water treatment plants, surface water, various industrial process water, and aquaculture.

Sensor Technical Parameters:

DS-115T Controller Technical Parameters: