·Principles of optical fluorescence quenching measurement based on life cycle

·Long-term stability

·No calibration required for more than one year

·Small maintenance

·Intelligent sensor, directly output calibrated data

·Can be used separately

·Output format:4~20MA,0~5V,0~10V,RS232

·Cable length can be customized

Dissolved oxygen plays an important role in the biochemical process and process industry of water environments, and is the most important measurement parameter in many fields, such as:

·Process Industry

·Water and wastewater systems

·Ship cabin

·Ship ballast water

·Fjords or other areas with less exchange of water

·Aquaculture Andra dissolved oxygen probes are based on the principle of fluorescence quenching measurement of life cycle.It uses platinum porphyrin complex as a fluorescent material and is embedded in a breathable fluorescent film. A black light isolation coating protects the fluorescent material from the fluorescence of sunlight and water particles.The fluorescent film is exposed to ambient water on one side and is installed on the optical window of the measuring chamber on the other side.The fluorescent material on the fluorescent film is excitated by blue light to make it emit red light. The detector detects the time from the emitting blue light to the release of red light. This time is linearly correlated with the dissolved oxygen concentration, and then after temperature compensation, it can be obtained

·Less disturbance effect (no oxygen consumption)

·Less affected by pollution

·Measuring absolute dissolved oxygen concentration does not require frequent calibration

·Better long-term stability

·Not affected by stress

·Faster response time

(1) μM =μmol/l. If you want to get mg/L, divide by 31.25.

(2) Salinity compensation is required when the salinity changes >1mS/cm, and pressure compensation is required when the pressure is >100m.

(3) Calibration range: 0~120%.

(4) Calibration range: 0~36°C.

(5) Parameters are subject to change without notice.