Title:
ELECTRICAL CONDUCTIVITY MEASURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/149572
Kind Code:
A1
Abstract:
This electrical conductivity measuring method for measuring an electrical conductivity of a liquid includes: a) a step for measuring a first complex impedance between a first detecting electrode (21) and a second detecting electrode (22) at a first frequency, in a state in which a liquid (LQ) is in contact with a protective layer (50) in such a way as to face each of the first detecting electrode (21) and the second detecting electrode (22) across the protective layer (50); b) a step for extracting a first extracted value from the first complex impedance in accordance with a predetermined extraction rule; and c) a step for determining the electrical conductivity of the liquid (LQ) on the basis of the first extracted value. In the extraction rule, a real part of the complex impedance is taken into consideration, and an imaginary part of the complex impedance is ignored.
Inventors:
MORISHITA AKIFUMI (JP)
OHNISHI TAKAO (JP)
OHNISHI TAKAO (JP)
Application Number:
PCT/JP2023/003771
Publication Date:
August 10, 2023
Filing Date:
February 06, 2023
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
G01R27/22; G01N27/04; G01N27/06
Domestic Patent References:
| WO2021241628A1 | 2021-12-02 |
Foreign References:
| JP2019109224A | 2019-07-04 | |||
| JPH11304856A | 1999-11-05 | |||
| JP2009002693A | 2009-01-08 | |||
| JP2011080814A | 2011-04-21 | |||
| JP2006133191A | 2006-05-25 | |||
| JPS63169545A | 1988-07-13 | |||
| JP2019028012A | 2019-02-21 | |||
| JP2008111669A | 2008-05-15 | |||
| JP2009092633A | 2009-04-30 | |||
| JPS649352A | 1989-01-12 | |||
| US20200049649A1 | 2020-02-13 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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