公开(公告)号：US07796265B2

公开(公告)日：2010-09-14

申请号：US12109254

申请日：2008-04-24

Applicant: Michael Tkachuk

Inventor： Michael Tkachuk

IPC: G01N21/00

CPC classification number: G01N21/3504 ,  G01N2201/0662 ,  G01N2201/0668

Abstract: An optical absorption gas analyzer for determining the concentration of a target gas in a sample is disclosed. The analyzer comprises a chamber for containing the sample in use; a radiation source assembly arranged to emit radiation into the chamber; a first radiation detector assembly arranged to detect radiation transmitted along a first optical path through the chamber and a second radiation detector assembly arranged to detect radiation transmitted along a second optical path through the chamber, wherein the length of the second optical path which the sample can intercept is shorter than that of the first optical path. The analyzer further comprises a processor adapted to generate a sensing signal SS based on the detected radiation transmitted along the first optical path and a reference signal SR based on the detected radiation transmitted along the second optical path. The processor determines the concentration of the target gas in the sample based on a comparison of the sensing signal with the reference signal.

Abstract translation: 公开了一种用于测定样品中目标气体浓度的光吸收气体分析仪。 分析仪包括用于容纳使用中的样品的室; 辐射源组件，被布置成将辐射发射到所述腔室中; 第一辐射检测器组件，被布置成检测沿着通过所述室的第一光路传输的辐射;以及第二辐射检测器组件，其布置成检测沿着通过所述室的第二光路传输的辐射，其中所述样品可以 截距比第一光路的截距短。 分析器还包括处理器，其适于基于沿着第一光路传输的检测到的辐射和基于沿着第二光路传输的检测到的辐射的参考信号SR生成感测信号SS。 处理器基于感测信号与参考信号的比较来确定样品中目标气体的浓度。