RDO-406-S Online Fluorescence Method for Dissolved Oxygen

The RDO-406 integrated online fluorescence dissolved oxygen sensor is designed based on the quenching principle of excitation fluorescence by specific substances in physics. When the excitation light is irradiated on the fluorescent material on the surface of the fluorescent film head, the fluorescent material is excited and emits fluorescence, and the extinction time of the fluorescence is affected by the concentration of oxygen molecules on the surface of the fluorescent film head. The phase difference between fluorescence and excitation light can be detected and compared with the internal calibration curve to calculate the concentration of oxygen molecules, and output the final value after temperature and salinity compensation. No electrolyte required, no polarization No need to consume oxygen, not affected by flow rate Built-in temperature sensor, automatic temperature compensation Built-in salinity compensation, flexible parameter setting Not interfered by chemicals such as sulfides Small drift, fast response, more accurate measurement Longer service life and lower cost of use The fluorescent membrane head is easy to replace and easy to maintain RS-485 interface, Modbus/RTU protocol, 4-20mA current output Low power consumption and anti-jamming design