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    Accurate measurement of concentration for a gas component in a gas mixture in which other components affect determination of the concentration
    3.
    发明专利
    Accurate measurement of concentration for a gas component in a gas mixture in which other components affect determination of the concentration 未知

    公开(公告)号：FI101749B1

    公开(公告)日：1998-08-14

    申请号：FI965250

    申请日：1996-12-30

    Applicant: INSTRUMENTARIUM OY

    Inventor： HUIKU MATTI

    IPC: G01N21/03 ,  G01N21/35 ,  G01N21/61

    Abstract: Sensor and method for nondispersive analysis of gas mixtures to determine the content of a gas component in it whose absorbance can be affected by other components in the gas mixture GG by collision-expansion. The arrangement includes a measurement chamber 5 that contains the gas mixture being analyzed, a radiation source 4 that emits radiation 15 through the measurement chamber, detectors 10, 14, 16 that receive radiation passed through the measurement chamber, as well as optical band pass filters 9a-c placed between the detectors and radiation source, the detectors being coupled to measurement channels 1-3 or measurement periods. In addition, the arrangement includes an optical gas filter 11 that contains said gas component or a mixture of it and lies between the detectors and radiation source. A first signal S1 is attained from the first measurement channel and a second signal S2 is also obtained from the second measurement channel from the radiation passed through the optical gas filter. Before the analyses the pressure and/or absorption length are determined or alternatively in the gas mixture as effective amount of gas component either with its fixed concentration and/or the pressure and/or absorption length L2 of the mixture at such a value that the second signal S2 and the first signal S1 are linearly independent of each other and the second signal and the first signal have a mutual relation in which the variables are represented by at least the collision expansion and gas component content and in which the coefficients are determined experimentally before the analyses for accurate determination of the effect of collision expansion.

    5.
    发明专利
    未知

    公开(公告)号：FI961808A

    公开(公告)日：1997-10-27

    申请号：FI961808

    申请日：1996-04-26

    Applicant: INSTRUMENTARIUM OY

    Inventor： HUIKU MATTI

    IPC: G01N20060101 ,  G01N27/74

    Abstract: The present invention concerns a method and arrangement for determination of the content of paramagnetic gas present in a sample gas by means of a known magnetic field and/or its gradient. Characteristic of the invention is a simple and convenient arrangement to form the magnetic field gradient. The basic idea of the invention can be applied almost without limitation to known methods, but the invention also permits the implementation of a method that utilizes an entirely new concept.

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