公开(公告)号：US20250035549A1

公开(公告)日：2025-01-30

申请号：US18772689

申请日：2024-07-15

Applicant: Yokogawa Electric Corporation

Inventor： Akihiro Murata ,  Shoma Takeda

IPC: G01N21/39 ,  B64G4/00 ,  G01N1/44 ,  G01N33/24

Abstract: A measurement apparatus includes a vaporization chamber in which a sample containing a target component is placed, a measurement chamber that is spatially connected to the vaporization chamber and forms enclosed space integrally with the vaporization chamber, a light source that applies, to the measurement chamber, laser light whose wavelength varies, a detector that detects the laser light having been applied from the light source and having passed through the measurement chamber, and an arithmetic unit that calculates the amount of the target component contained in the sample by analyzing a light-receiving signal of the laser light detected by the detector. The arithmetic unit acquires the amount of the target component, based on an integral value of a spectrum of absorbance of the laser light that is absorbed by the target component while the laser light passes through an interior of the measurement chamber.

公开(公告)号：US11150182B2

公开(公告)日：2021-10-19

申请号：US16648058

申请日：2018-09-05

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yoshihisa Hidaka ,  Gen Matsuno ,  Shigeru Takezawa ,  Hideko Tanaka ,  Kaori Sakuma ,  Akihiro Murata ,  Toshiki Ohara

IPC: G01N21/359 ,  G01N1/24 ,  G01N21/3504 ,  G01N21/3577 ,  G01N21/85

Abstract: A method for testing an analysis apparatus that analyzes a first fluid flowing through a pipe using light that has passed through a probe attached to and disposed inside the pipe such that a portion of a light path passes outside a housing of the probe. The method includes: after a second fluid that absorbs less of the light than the first fluid has been introduced into the pipe, introducing a third fluid having predetermined absorption characteristics into the housing of the probe; and analyzing the absorption characteristics of the third fluid using the light that has passed through the probe.

公开(公告)号：US20200256792A1

公开(公告)日：2020-08-13

申请号：US16648058

申请日：2018-09-05

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yoshihisa Hidaka ,  Gen Matsuno ,  Shigeru Takezawa ,  Hideko Tanaka ,  Kaori Sakuma ,  Akihiro Murata ,  Toshiki Ohara

IPC: G01N21/359 ,  G01N21/85 ,  G01N21/3577 ,  G01N21/3504 ,  G01N1/24

Abstract: A method for testing an analysis apparatus that analyzes a first fluid flowing through a pipe using light that has passed through a probe attached to and disposed inside the pipe such that a portion of a light path passes outside a housing of the probe. The method includes: after a second fluid that absorbs less of the light than the first fluid has been introduced into the pipe, introducing a third fluid having predetermined absorption characteristics into the housing of the probe; and analyzing the absorption characteristics of the third fluid using the light that has passed through the probe.