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    DYNAMIC RECONSTRUCTION OF A CALIBRATION STATE OF AN ABSORPTION SPECTROMETER
    2.
    发明公开
    DYNAMIC RECONSTRUCTION OF A CALIBRATION STATE OF AN ABSORPTION SPECTROMETER 有权
    方法和装置一个KALIBRIERZUSTANDES AN吸收光谱仪动态重构

    公开(公告)号：EP2630470A1

    公开(公告)日：2013-08-28

    申请号：EP11791077.8

    申请日：2011-10-21

    Applicant: SpectraSensors, Inc.

    Inventor： LIU, Xiang ,  LEWISON, John ,  JI, Wenhai ,  FEITISCH, Alfred

    IPC: G01N21/35 ,  G01N21/61 ,  G01N21/31 ,  G01N21/39

    CPC classification number: G01J3/28 ,  G01J3/42 ,  G01N21/031 ,  G01N21/274 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39 ,  G01N2021/399

    Abstract: A reference harmonic absorption curve of a laser absorption spectrometer, which can include a tunable or scannable laser light source and a detector, can have a reference curve shape and can include a first, second, or higher order harmonic signal of a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. The reference harmonic absorption curve can have been determined for the laser absorption spectrometer in a known or calibrated state. A test harmonic absorption curve having a test curve shape is compared with the reference harmonic absorption curve to detect a difference between the test curve shape and the reference curve shape that exceeds a predefined allowed deviation and therefore indicates a change in an output of the laser light source relative to the known or calibrated state. One or more operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.

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