| 摘要 |
PROBLEM TO BE SOLVED: To accurately and quantitatively measure the change of contamination of an industrial water system and an industrial waste water system with the elapse of time on a real time basis and to add a proper amt. of a water treatment chemical agent corresponding to the contamination state thereof to efficiently and economically prevent the trouble caused by the quantity of a contaminant of the water system. SOLUTION: A water monitoring member is equipped with a water injection port 4, a water exit port 5, the cylindrical measuring chamber 6 provided between both ports 4, 5 and having a cross-sectional area larger than that of both ports 4, 5 and having two opposed side walls respectively constituted of mutually parallel transparent flat plates 23, 24, the light emitting part 2 arranged on one side of both side walls, the light detecting part 3 arranged on the other side of them, the inspecting or cleaning window of the interior of the measuring chamber provided to a side wall other than both side walls and the cover member 32 for hemetically sealing the window in a detachable manner.
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