公开(公告)号：US3661460A

公开(公告)日：1972-05-09

申请号：US3661460D

申请日：1970-08-28

Applicant: TECHNICON INSTR

Inventor： ELKING ALAN H ,  GRONER WARREN ,  SAUNDERS ALEX M

IPC: G01N15/14 ,  G01N21/05 ,  G01N1/00 ,  G01N15/02 ,  G01N21/06

CPC classification number: G01N15/1404 ,  G01N21/05 ,  G01N2021/0346

Abstract: There is provided a method and apparatus for optical analysis by photometry of a substance flowing in a liquid stream within a coaxial sheath stream of a transparent liquid. The sheath stream, flowing in the same direction, entrains the inner stream so as to confine it concentrically. A photometer is used which includes a light source on one side of the sheathed stream in a position to direct light onto the inner stream which is cylindrical, the outer or sheath stream also being cylindrical. The photometer also includes a light detector externally of the sheathed stream in an angular position to detect the photometric results of impingement of light on the contents of the inner stream. Refraction of light at the interfaces of the sheath stream is compensated by varying the radius of the inner stream through the control of the flow of one stream with reference to the other. The concept also includes the narrowing of the sheathed stream to a very small diameter in which it is confined by a wall structure in the area of examination.

Abstract translation: 提供了一种通过在透明液体的同轴护套流中的液体流中流动的物质的光度测定来进行光学分析的方法和装置。 沿相同方向流动的鞘流夹带内流，以便将其同心约束。 使用光度计，其包括在护套流的一侧上的光源，以将光引导到圆柱形的内部流，外部或鞘流也是圆柱形的。 光度计还包括位于护套流的外部的光检测器，该光检测器处于角度位置，以检测光线对内流内容物的撞击的光度结果。 通过通过相对于另一个流的流量的控制来改变内部流的半径来补偿鞘流的界面处的光的折射。