Title:
MEASUREMENT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/049512
Kind Code:
A1
Abstract:
The present invention allows for easy placement of a sensor for measuring the degree of contamination of a liquid such as hydraulic oil at any location in a hydraulic circuit and achieves high maintainability. A protrusion is provided so as to protrude toward the inside of a first flow channel, which is a through hole penetrating a housing. A second flow channel, which is a through hole penetrating the protrusion, is substantially parallel with the first flow channel and has an inner diameter smaller than that of the first flow channel. A light irradiation unit irradiates a liquid flowing through the inside of the second flow channel with light. A light-receiving unit is opposed to the light irradiation unit with the second flow channel therebetween and receives the light emitted from the light irradiation unit. The first flow channel has a narrow portion where the inner diameter of the first flow channel is narrower. The narrow portion is in a position that overlaps the second flow channel in plan view.
Inventors:
KITAJIMA NOBUYUKI (JP)
Application Number:
PCT/JP2020/034067
Publication Date:
March 18, 2021
Filing Date:
September 09, 2020
Export Citation:
Assignee:
YAMASHIN FILTER CORP (JP)
International Classes:
G01N21/05; G01N21/27; G01N21/59; G01N21/85; G01N33/28
Foreign References:
| JP2009069097A | 2009-04-02 | |||
| JPH0581696U | 1993-11-05 | |||
| JPH0231310U | 1990-02-27 | |||
| JP2000009675A | 2000-01-14 | |||
| JPH11235097A | 1999-08-27 | |||
| JPS53116187A | 1978-10-11 |
Attorney, Agent or Firm:
SAKATA Yukari (JP)
Download PDF:
Previous Patent: POLYAMIDE RESIN COMPOSITION AND POLYAMIDE RESIN MOLDED ARTICLE
Next Patent: AGRICULTURAL WORK SUPPORT SYSTEM
Next Patent: AGRICULTURAL WORK SUPPORT SYSTEM