公开(公告)号：US20190128799A1

公开(公告)日：2019-05-02

申请号：US15800582

申请日：2017-11-01

Applicant: ABB Schweiz AG

Inventor： J. Brian Leen ,  Axel Kramer ,  Xu Du

IPC: G01N21/3504 ,  G01N21/359 ,  G01N21/39

CPC classification number: G01N21/3504 ,  G01J3/10 ,  G01J3/42 ,  G01N21/359 ,  G01N21/39 ,  G01N2021/399

Abstract: Systems and methods for measuring a value of constituents in a mixed constituent gas having at least one broad band absorber constituent therein and at least one lock constituent are provided. The system uses a combination of integrated cavity output spectroscopy and cavity ringdown spectroscopy to determine the measurement values of constituents in a cavity of a spectrometer. Cavity ringdown in the presence of the at least one broadband absorber constituent and a reference concentration value are used to determine the constituent measurement values when the spectral width of the laser tuning range is overlapped by the absorption band of the broad band absorber in the cavity.

公开(公告)号：US10782228B2

公开(公告)日：2020-09-22

申请号：US15800582

申请日：2017-11-01

Applicant: ABB Schweiz AG

Inventor： J. Brian Leen ,  Axel Kramer ,  Xu Du

IPC: G01N21/3504 ,  G01N21/39 ,  G01N21/359 ,  G01J3/10 ,  G01J3/42

Abstract: Systems and methods for measuring a value of constituents in a mixed constituent gas having at least one broad band absorber constituent therein and at least one lock constituent are provided. The system uses a combination of integrated cavity output spectroscopy and cavity ringdown spectroscopy to determine the measurement values of constituents in a cavity of a spectrometer. Cavity ringdown in the presence of the at least one broadband absorber constituent and a reference concentration value are used to determine the constituent measurement values when the spectral width of the laser tuning range is overlapped by the absorption band of the broad band absorber in the cavity.