公开(公告)号：US5170064A

公开(公告)日：1992-12-08

申请号：US720428

申请日：1991-06-26

Applicant: Philip T. Howe

Inventor： Philip T. Howe

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

CPC classification number: G01N21/3504 ,  G01N2021/3129

Abstract: A nondispersive gas analyzer for use in monitoring the concentration of one or more gases, comprises a body having a cavity having an elliptical reflecting surface, defining a first focus and a second focus, for transmitting radiation between the focuses, a chamber (2) for holding a sample gas to be analyzed, one of the focuses being located within the sample chamber, a chamber (4) for holding an inert gas and a chamber (3) for holding an analyte gas, a radiation source (24) disposed at one of the focuses, and a radiation detector (26, 27) associated with each of the inert and analyte gas chambers for detecting the radiation passing through the sample gas and the inert gas and the radiation passing through the sample gas and the analyte gas located at the other of the focuses.

Abstract translation: PCT No.PCT / CA90 / 00288 Sec。 371日期1991年6月26日 102（e）日期1991年6月26日PCT提交1990年9月10日PCT公布。 公开号WO91 / 05240 日期：1991年4月18日。用于监测一种或多种气体的浓度的非分散气体分析仪包括具有限定第一焦点和第二焦点的具有椭圆形反射表面的空腔的主体，用于在聚焦 ，用于保持要分析的样品气体的腔室（2），其中一个焦点位于样品室内，用于保持惰性气体的室（4）和用于保持分析物气体的室（3），辐射 源极（24）和与每个惰性和分析物气室相关联的辐射检测器（26,27），用于检测通过样品气体和惰性气体的辐射以及通过样品的辐射 气体和位于焦点另一个处的分析物气体。