WATER QUALITY SENSOR AND METHOD FOR MEASURING CONCENTRATION OF SUBSTANCE IN WATER

A water quality sensor (1) includes a light source (31), a beam splitter (33), a first detector (34), a second detector (35), and a measurement space (24). The beam splitter (33) splits light emitted from the light source (31) into transmitted light and reflected light. The first detector (34) detec...

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Hauptverfasser: FUJII, Yoshiyasu, KOJIMA, Kodai, KUWAHARA Daiki, YAZAWA Katsunori, TAMAI Kazusei, KOJIMA Junji, OGASAWARA Kenta
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A water quality sensor (1) includes a light source (31), a beam splitter (33), a first detector (34), a second detector (35), and a measurement space (24). The beam splitter (33) splits light emitted from the light source (31) into transmitted light and reflected light. The first detector (34) detects the transmitted light. The second detector (35) detects the reflected light. The measurement space (24) is filled with a sample of liquid. Of an optical path along which light propagates from the light source (31) to the first detector (34), a portion extending through the measurement space (24) is defined as a first optical path (L1). Of an optical path along which light propagates from the light source (31) to the second detector (35), a portion extending through the measurement space (24) is defined as a second optical path (L2). The optical path length of the second optical path (L2) differs from the optical path length of the first optical path (L1).