HYPOCHLOROUS ACID WATER GENERATOR, SPACE STERILIZATION DEVICE, AND HYPOCHLOROUS ACID CONCENTRATION MEASUREMENT METHOD

To measure a concentration of hypochlorous acid using electrodes used for electrolysis.SOLUTION: There is provided a hypochlorous acid water generator including: an electrolytic cell 210; an electrolyzer 230 that applies a DC voltage to a pair of electrodes 220 to electrolyze chlorine-containing water to generate hypochlorous acid water; measurement means 110 that measures conductivity information indicating a conductivity of the hypochlorous acid water; a measurement control device 120 that controls the measurement means 110; and switching means 140 that switches a connection between the electrode 220 and the electrolyzer 230 and a connection between the electrode 220 and the measurement means 110. The measurement means 110 includes an application measuring device 112 that applies an AC voltage between the pair of electrodes 220. The measurement control device 120 includes: a measurement information acquisition unit 121 that acquires the conductivity information from the measurement means 110; a conversion information acquisition unit 122 that acquires conversion information indicating a relation between hypochlorous acid concentration and the conductivity information; and a concentration calculation unit 123 that calculates the hypochlorous acid concentration based on the conductivity information and the conversion information.SELECTED DRAWING: Figure 1 【課題】電解に用いられる電極を利用して次亜塩素酸の濃度を測定する。【解決手段】電解槽２１０と、一対の電極２２０に直流電圧を印加し、塩素を含んだ水を電気分解して次亜塩素酸水を発生させる電解装置２３０と、次亜塩素酸水の電導度を示す電導度情報を測定する測定手段１１０と、測定手段１１０を制御する測定制御装置１２０と、電極２２０と電解装置２３０との接続と電極２２０と測定手段１１０との接続とを切り替える切替手段１４０と、を備え、測定手段１１０は、一対の電極２２０の間に交流電圧を印加する印加測定装置１１２を備え、測定制御装置１２０は、測定手段１１０から電導度情報を取得する測定情報取得部１２１と、次亜塩素酸濃度と電導度情報との関係を示す換算情報を取得する換算情報取得部１２２と、電導度情報、および換算情報に基づき次亜塩素酸濃度を算出する濃度算出部１２３と、を備える次亜塩素酸水発生装置。【選択図】図１