LIQUID DETERIORATION DETERMINATION DEVICE AND HYDRAULIC UNIT

WIPO Patent Application WO/2021/019890

A1

This liquid deterioration determination device (30) is provided with a light reception unit (33) for receiving detection light transmitted through a liquid and a determination unit (37a) that determines the degree of deterioration of the liquid. The light reception unit (33) outputs a first detection value (R) representing the amount of light of a first color included in the detection light transmitted through the liquid and a second detection value (B) representing the amount of light of a second color transmitted through the liquid, said second color differing from the first color. The determination unit (37a) uses the ratio of the second detection value (B) to the first detection value (R) as a means to determine the degree of deterioration of the liquid.

JP2003344433	MICRO-ARRAY, MICRO-ARRAY SYSTEM AND MEASURING METHOD OF TEST MATERIAL
WO/2006/007766	A CALIBRATION SLIDE FOR FLUORESCENCE DETECTION INSTRUMENTS AND PROCESS OF PREPARATION
JP4128143	Method for measuring the concentration of multiple chemical substances, method for measuring the concentration of multiple ionic species, and sensors for that purpose

SEIKE HIKARU (JP)
NAKAMURA HIROKAZU (JP)
INOUE MINEO (JP)
AYADO KENJI (JP)

PCT/JP2020/021176

February 04, 2021

May 28, 2020

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DAIKIN IND LTD (JP)

G01N21/27

WO2015060457A1

2015-04-30

US5194910A	1993-03-16
US20090216464A1	2009-08-27
US20080024761A1	2008-01-31
JP2018048842A	2018-03-29
JP2013536939A	2013-09-26
JP2017026495A	2017-02-02
JP2016008887A	2016-01-18
JP2016188842A	2016-11-04

See also references of EP 3982109A4

YAMAO, Norihito et al. (JP)

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