Device based on DPD colorimetry on -line measuring chlorine dioxide

The utility model discloses a device based on DPD colorimetry on -line measuring chlorine dioxide, include: reactor, binary channels pump, a reagent tank, the 2nd reagent tank and controller, the reactor includes casing, inductance coils, light source, detector and magnetism stirring piece, the casing has reaction chamber, water inlet, delivery port and reagent mouth, the reactor passes through the water inlet and connects the water source, connects the binary channels delivery side of pump respectively through the reagent mouth, and a reagent tank and the 2nd reagent tank are connected respectively to the entry of binary channels pump, magnetism stirring sets up in the reaction chamber, thereby inductance coils sets up and produces the stirring of magnetic force actuation magnetism duringin the circular telegram at the reaction chamber internalization in the periphery of casing, light source and detector set up on the casing, and the light source can send light and detect for the detector with the inside of