Potentiometric and photometric titration integrated permanganate index analyzer

The utility model relates to the technical field of water quality analysis, and discloses a potentiometric and photometric titration integrated permanganate index analyzer which comprises a power module, a reaction module and a control module, the reaction module can monitor a potential signal in the back titration process by using an electrode and can also monitor a light intensity signal in the back titration process by using a light source transmitting end and a light source receiving end, and the control module judges a titration reaction endpoint according to the light intensity signal or the potential signal to determine the consumption of a potassium permanganate solution so as to determine the permanganate index according to the consumption. One of the titration reaction endpoint is judged through potential signal change, the other one is judged through light intensity signal change, whether a potential signal or a light intensity signal is detected in the titration reaction process can be selected ac