Normal position chemical oxygen demand on -line detector

The utility model relates to a normal position chemical oxygen demand on -line detector, including sampling system, pretreatment systems and analytic system, pretreatment systems includes the water sample pretreatment pond of being connected with the self priming pump, is equipped with the filter screen in the water sample pretreatment pond, and the filter screen is upper plenum and lower cavity with the inner chamber partition in water sample pretreatment pond, and the bottom that is located the water sample pretreatment pond in the lower cavity is equipped with supersonic generator, and the bottom in water sample pretreatment pond is equipped with the one -level outlet that communicates with lower cavity, and the side in water sample pretreatment pond is equipped with the pretreatment systems 1 mouth that communicates with the upper plenum, analytic system includes the casing places the detector of casing in, in, with the feed liquor peristaltic pump that the detector is connected, the pump body connection