Title:
GAS CONCENTRATION MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/238573
Kind Code:
A1
Abstract:
This gas concentration measuring device comprises a housing, a measuring instrument, a gas permeable membrane, a first fan, and a second fan. The housing comprises an internal space enclosed by a waterproof wall, and an opening portion which is provided in the wall to allow the internal space to communicate with the outside of the housing. The measuring instrument is disposed in the internal space to measure a gas concentration. The gas permeable membrane blocks the opening portion, and allows gas to pass but does not allow moisture to pass. The first fan is disposed in the interior space to agitate a gas in the internal space. The second fan is disposed outside the housing, and accepts a water current to generate a driving force for the first fan.
Inventors:
TENPAKU MASAKO (JP)
YAMAGUCHI YOHEI (JP)
YAMAGUCHI YOHEI (JP)
Application Number:
PCT/JP2023/017391
Publication Date:
December 14, 2023
Filing Date:
May 09, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G01N1/22; G01N33/18
Foreign References:
| JP2001021466A | 2001-01-26 | |||
| JP2000292335A | 2000-10-20 | |||
| US20160033446A1 | 2016-02-04 | |||
| JPH0385564U | 1991-08-29 | |||
| JPS59142761U | 1984-09-25 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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