Title:
OIL CONCENTRATION MEASUREMENT DEVICE AND OIL CONCENTRATION MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2016/132795
Kind Code:
A1
Abstract:
Provided are an oil concentration measurement device and method that make it possible to measure oil concentration over a wide concentration range and can thus be applied to constant oil concentration measurement. The absorbance spectrum of a liquid to be measured containing a known oil component is measured within a prescribed wavelength band within which light absorption is observed (S2, S3); if a prescribed standard is satisfied, an oil concentration value is determined on the basis of the absorption of a prescribed wavelength within the prescribed wavelength band and a first calibration curve indicating the relationship between the concentration of the component and the absorption of the prescribed wavelength (S4, S51); if the prescribed standard is not satisfied, the oil concentration value is determined on the basis of the wavelength within the absorbance spectrum at which the absorbance becomes a prescribed absorbance and a second calibration curve indicating the relationship between the concentration of the component and the wavelength at the prescribed absorbance (S4, S52).
Inventors:
OGASAWARA KAZUHISA (JP)
Application Number:
PCT/JP2016/051369
Publication Date:
August 25, 2016
Filing Date:
January 19, 2016
Export Citation:
Assignee:
ACT FIVE CO LTD (JP)
International Classes:
G01N21/33
Foreign References:
| JPH0961349A | 1997-03-07 | |||
| US7616316B1 | 2009-11-10 | |||
| JPH09292328A | 1997-11-11 | |||
| JPS56147042A | 1981-11-14 | |||
| JPH07294519A | 1995-11-10 | |||
| JP2011220941A | 2011-11-04 |
Other References:
See also references of EP 3139151A4
Attorney, Agent or Firm:
Kyoto International Patent Law Office (JP)
Patent business corporation Kyoto international patent firm (JP)
Patent business corporation Kyoto international patent firm (JP)
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