TOTAL RESIDUAL OXIDANT CONCENTRATION MEASURE MODULE

The present invention relates to a module for measuring concentration of total residual oxidant. The module for measuring concentration of total residual oxidant comprises: an inlet pipe which receives water from the outside; a measuring cell which is connected with the inlet pipe and receives and stores the water introduced into the inlet pipe; and an outlet pipe which is connected with the measuring cell and discharges the water stored in the measuring cell. The measuring cell includes: a first water level sensor which senses the high level of the water stored in the measuring cell and outputs a first water level sensing signal; a second water level sensor which senses the low level of the water and outputs a second water level sensing signal; a stirrer rotating the stored water; and an electrode sensor which receives a voltage from the outside to measure a potential difference between the stored water. Therefore, the module for measuring concentration of total residual oxidant measures the concentration of the total residual oxidant of ship ballast water under the constant condition to stably measure the concentration of the total residual oxidant, thereby improving reliability.