| 摘要 |
PURPOSE: Provided is an apparatus for producing deionized water with a device for checking water quality which can promptly notice whether deionized water is contaminated, thereby preventing spread of water contamination. CONSTITUTION: The apparatus(100) for producing deionized water includes a supply piping(20) for supplying water to be treated; ion-exchange resin towers(10) connected parallel to the supply piping, which produce deionized water by filtering ions contained in the supplied water by the ion-exchange method; first discharge pipes(32) connected to the bottoms of the ion-exchange resin towers, which discharge the produced deionized water; second discharge pipes(34) connected to ends of the first discharge pipes, which discharge the produced deionized water to the outside; and devices(40) for checking the quality of water discharged from the second discharge pipes. The checking device includes a sensor for sensing electrical resistance and conductivity of deionized water and a control device for displaying information from the sensor and controlling the ion-exchange resin tower by the information.
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