Title:
レーザ式ガス分析装置
Document Type and Number:
Japanese Patent JP7440866
Kind Code:
B2
Abstract:
To calibrate an integration area of an absorption line or a scale of a laser frequency, for eliminating calibration using a reference gas.SOLUTION: In a laser type gas analyzer, absorption line analyzing means determines an integration area Aη of an actual measurement absorption line and a half value full width Γη in a control parameter η axis of a sample gas. Integration area calibration means converts, the integration area Aη of the actual measurement absorption line into an integration area Aν of an absorption line on a frequency axis, on the basis of a half value full width Γν of a known absorption line on the frequency axis acquired from a temperature and a pressure of the sample gas, and the half value full width Γη of the actual measurement absorption line. Concentration calculating means calculates concentration of a measurement object substance on the basis of the integration area Aν of the absorption line acquired by the integration area calibration means. The absorption line calibration means acquires a frequency ν corresponding to the control parameter η of the actual measurement absorption line, on the basis of a control parameter η0 and the half value full width Γη corresponding to a center of the actual measurement absorption line, a center frequency ν0 and the half value full width Γν of the known absorption line.SELECTED DRAWING: Figure 4
Inventors:
Hisashi Abe
Hiroyuki Shimizu
Tomoki Miyake
Kenichi Itabashi
Shinichi Honda
Hiroyuki Shimizu
Tomoki Miyake
Kenichi Itabashi
Shinichi Honda
Application Number:
JP2020060345A
Publication Date:
February 29, 2024
Filing Date:
March 30, 2020
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
Shinyei Technology Co., Ltd.
Shinyei Technology Co., Ltd.
International Classes:
G01N21/39; G01N21/27
Domestic Patent References:
| JP2007163422A | ||||
| JP2018169203A | ||||
| JP2009216385A | ||||
| JP2007046983A |
Foreign References:
| US20190331651 | ||||
| US20180275049 |
Attorney, Agent or Firm:
Toyoaki Fukui