WATER QUALITY METER

Japanese Patent JP3491573

B2

PROBLEM TO BE SOLVED: To easily treat liquid used for measurement by supplying an analysis reagent, calibration reference water, and washing water from a storage container to an analysis part as needed, and storing drain liquid after the analysis into a container.
SOLUTION: Sample water that is passed through a consumer-side distribution pipe 7 from water piping 6 is taken into a water quality meter 8 and is supplied to a mixture analysis part 110. In the mixture analysis part 110, a plurality of analysis parts 76, 77, and 78 are arranged, thus measuring residual nitrogen, chromaticity, turbidity, or the like. A reagent 25 for measurement/analysis, reference water 26 for measurement reference, and washing water 27 for washing the inside of a channel and each analysis part are controlled by a signal-processing part 18 and are supplied to the mixture analysis part 110. A measurement operation at each analysis part is controlled by a signal-processing part 18, and a measurement analysis value that is the measurement result is transmitted from a communication part 19 to an outer part. Each liquid used by the mixture analysis part 110 passes through a drain channel 21, and is stored in a drain storage container 24 that is mounted into the case of the water quality meter 8 with removable structure, thus eliminating the need for draining such waste liquid as sample water to the outside.

Shozo Kasai
Tamio Ishihara
Toshihiro Onose
Koji Tamaki

JP24692599A

January 26, 2004

September 01, 1999

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株式会社日立製作所

G01N33/18; (IPC1-7): G01N33/18

Yasuo Sakuta

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