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RDO-406 integrated on-line fluorescence dissolved oxygen sensor is designed and fabricated based on the quenching principle of excited fluorescence by specific substances in physics. When the excitation light is shone on the fluorescent material on the surface of the fluorescent film head, the fluorescent material is excited and emits fluorescence. The quenching time of fluorescence is affected by the concentration of oxygen molecules on the surface of the fluorescent film head.By detecting the phase difference between fluorescence and excitation light and comparing with the internal calibration curve, the concentration of oxygen molecules can be calculated, and the final value can be output after temperature and salinity compensation. No electrolyte is required and will not be polarized. No oxygen consumption, not affected by flow rate. Built-in temperature sensor, automatic temperature compensation. Free from interference by chemicals such as sulfides Small drift, rapid reaction, more accurate measurement. Long service cycle, lower cost of use. Simple replacement of fluorescent cap. Rs-485 interface, Modbus/RTU protocol. Low power consumption，anti-interference.

RDO-206A integrated on-line fluorescence dissolved oxygen sensor is designed and fabricated based on the quenching principle of excited fluorescence by specific substances in physics. When the excitation light is shone on the fluorescent material on the surface of the fluorescent film head, the fluorescent material is excited and emits fluorescence. The quenching time of fluorescence is affected by the concentration of oxygen molecules on the surface of the fluorescent film head.By detecting the phase difference between fluorescence and excitation light and comparing with the internal calibration curve, the concentration of oxygen molecules can be calculated, and the final value can be output after temperature and salinity compensation.

iDO-306 Online integrated sensor is a luminescent dissolved oxygen physics of substances on the principle of excitation fluorescence quenching made based on the design. Blue light emitting diode (LED) in the emitted fluorescent substance on the fluorescent surface of the cap, the inner surface of the fluorescent substance is excited, emitting red light, by detecting the phase difference between the red and blue, and comparison with the internal calibration value to calculate the concentration of oxygen molecules, the temperature-compensated output automatically final value. Without electrolyte, the polarization will not polarization Without consuming oxygen, without affecting the flow rate Built-in temperature sensor, automatic temperature compensation Interference is not sulfide and other chemicals Drift is small, fast response, more accurate measurement Maintenance-free, long life cycle, the use of lower cost Fluorescent cap replacement is simple RS-485 interface, Modbus-RTUprotocol