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    Apparatus and method for exhaust analysis
    1.
    发明授权
    Apparatus and method for exhaust analysis 失效
    用于排气分析的装置和方法

    公开(公告)号：US3593023A

    公开(公告)日：1971-07-13

    申请号：US3593023D

    申请日：1969-03-27

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： DODSON MICHAEL ,  GOMEZ RAYMOND J

    IPC: G01M15/10 ,  G01N1/22 ,  G01N21/35 ,  G01N33/00 ,  G01N21/26 ,  G01N31/00

    CPC classification number: G01M15/108 ,  G01N1/2252 ,  G01N1/2258 ,  G01N21/3504 ,  G01N33/0011 ,  G01N2001/2261 ,  Y10T436/205831

    Abstract: An apparatus and method for determining the content of certain constituents in hot gases, such as the exhaust of motor vehicles or the like. The exhaust gas is conveyed by a pump to an air cooled condenser to lower the temperature of the gas to essentially ambient temperature and thus condense water vapor therein. The gas is then heated to a temperature above said ambient temperature while being conveyed from the condenser through a conduit to a sample cell of a radiant energy analyzer so that water vapor in the gas passing through the conduit and cell will not condense upon the walls thereof. The cell is positioned above a water trap in the condenser a distance sufficiently great so that no water in the trap will be carried into the cell by the flow of gas passing through the apparatus. The gas is preferably conveyed through the apparatus by means of a jet pump connected to an outlet port on the cell. The jet pump embodies a restriction at its outer end to provide automatic pressure regulation in the apparatus so that the gas pressure in the sample cell will remain relatively constant regardless of pressure fluctuations in the air supply that drives the pump.

    Paramagnetic gas partial pressure measurer
    3.
    发明授权
    Paramagnetic gas partial pressure measurer 失效
    参考气体部分压力测量仪

    公开(公告)号：US3648162A

    公开(公告)日：1972-03-07

    申请号：US3648162D

    申请日：1969-10-24

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： CEDERSTRAND CARL N ,  DODSON MICHAEL

    IPC: G01L21/00 ,  G01N27/74 ,  G01R33/12

    CPC classification number: G01N27/74 ,  G01L21/00

    Abstract: Apparatus for determining the partial pressure of a paramagnetic gas in a gas mixture, comprising: an elongated C-shaped magnet for generating a plane of high-magnetic flux density over a relatively large rectangular area, and a region of low-flux density at short distances from such plane; and a test body in the shape of a rectangular parallelepiped having dimensions approximately equal to the size of the rectangular area and the distance between the plane of high-flux density and the region of low-flux density. Means are provided for pivotally mounting the test body with one surface thereof aligned with the rectangular area and an opposite surface aligned with the region of low-flux density, the test body being mounted for movement in a direction perpendicular to the plane of high-magnetic flux density.

    Abstract translation: 用于确定气体混合物中的顺磁性气体的分压的装置，包括：用于在相对大的矩形区域上产生高磁通密度的平面的细长C形磁体和短的低通量密度区域 距飞机的距离; 以及具有大致等于矩形区域的尺寸和大磁通密度的平面与低磁通密度区域之间的距离的矩形平行六面体形状的测试体。 提供了用于枢转地安装测试体的装置，其一个表面与矩形区域对准，并且相对表面与低磁通密度区域对准，测试体被安装成沿垂直于高磁场平面的方向运动 通量密度。

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