公开(公告)号：US08586930B2

公开(公告)日：2013-11-19

申请号：US12565099

申请日：2009-09-23

申请人： Heikki Haveri ,  Kurt Peter Weckstrom

发明人： Heikki Haveri ,  Kurt Peter Weckstrom

IPC分类号： G01J5/02

CPC分类号： G01N21/3504 ,  G01J3/427 ,  G01N2021/3177

摘要： A non-dispersive single beam detection assembly in an infrared gas analyzer. The detection assembly comprises radiation source(s) providing infrared radiation, a measuring chamber, and a physical beam splitter for dividing said radiation beam into a reflected beam portion and a transmitted beam portion, or for combining a reflected beam portion and a transmitted beam portion into said radiation beam. A measuring detector receives one beam portions, and a reference detector receives another beam portion. Alternatively a measuring/reference detector receives both beam portions. Said transmitted beam portion has a first spectral intensity peak at shorter wavelengths with a first peak wavelength, and said reflected beam portion has a second spectral intensity peak at longer wavelengths with a second peak wavelength. There is a wavelength gap between said second peak wavelength and said first peak wavelength, which gap corresponds a wavelength shift of an optical interference filter with said second peak wavelength as tilted from its perpendicular position to an angled position. Said wavelength gap is at maximum 10% of the second peak wavelength, and at minimum 0.5% of the second peak wavelength.

摘要翻译： 红外气体分析仪中的非分散单光束检测组件。 检测组件包括提供红外辐射的辐射源，测量室和物理分束器，用于将所述辐射束分成反射光束部分和透射光束部分，或用于组合反射光束部分和透射光束部分 进入所述辐射束。 测量检测器接收一个光束部分，并且参考检测器接收另一光束部分。 或者，测量/参考检测器接收两个光束部分。 所述透射光束部分具有在具有第一峰值波长的较短波长处的第一光谱强度峰值，并且所述反射光束部分在具有第二峰值波长的较长波长处具有第二光谱强度峰值。 在所述第二峰值波长和所述第一峰值波长之间存在波长间隙，该间隙对应于具有从其垂直位置倾斜到成角度位置的所述第二峰值波长的光学干涉滤光器的波长位移。 所述波长间隙为第二峰值波长的最大值10％，并且为第二峰值波长的最小值的0.5％。

公开(公告)号：US20120097852A1

公开(公告)日：2012-04-26

申请号：US13280852

申请日：2011-10-25

申请人： Kurt Peter Weckstrom ,  Heikki Antti Mikael Haveri

发明人： Kurt Peter Weckstrom ,  Heikki Antti Mikael Haveri

IPC分类号： G01N21/17 ,  G01J5/10

CPC分类号： G01N21/3504 ,  G01N21/314 ,  G01N33/497 ,  G01N2021/3137 ,  G01N2021/3177 ,  G01N2021/3185 ,  G02B5/284

摘要： A gas analyzer for measuring at least two components of a gas is disclosed herein. The gas analyzer comprising an emitter configured to emit infrared radiation through the gas, a filter assembly configured to permit a transmission of predetermined wavelengths emitted by the emitter, and a detector configured to receive wavelengths emitted by the emitter and penetrated through the filter assembly. The filter assembly comprises at least two tunable narrowband interference filters in series, each of the filters comprising two dielectric mirrors and an air space between the two dielectric mirrors to tune one of the filters to different transmission band than another of the filters.

摘要翻译： 本文公开了用于测量气体的至少两种组分的气体分析器。 气体分析器包括被配置为通过气体发射红外辐射的发射器，被配置为允许发射由发射器发射的预定波长的传输的滤波器组件和被配置为接收由发射器发射并穿透过滤器组件的波长的检测器。 滤波器组件包括串联的至少两个可调窄带干扰滤波器，每个滤波器包括两个电介质反射镜和两个电介质镜之间的空气空间，以将滤波器之一调谐到与另一个滤波器不同的传输频带。

公开(公告)号：US5908789A

公开(公告)日：1999-06-01

申请号：US815831

申请日：1997-03-12

申请人： Kurt Peter Weckstrom

发明人： Kurt Peter Weckstrom

IPC分类号： G01J3/42 ,  G01N21/35 ,  G01N21/61 ,  G01N33/00 ,  G01N21/01 ,  G01N21/31

CPC分类号： G01N21/3504 ,  Y10T436/20 ,  Y10T436/204998 ,  Y10T436/205831 ,  Y10T436/23

摘要： The invention relates to a method and apparatus for determining the concentration of at least carbon dioxide in a gas mixture on the basis of the absorption of infrared radiation (2), said apparatus comprising: a radiation source (1), the radiation emitted thereby being aligned to travel through a measuring cell (4) containing a gas mixture (6) to be analyzed; an optical band-pass filter (10), which is transmissive to a first wavelength band and positioned on the path of radiation emerging from the measuring cell or entering into the measuring cell through which the radiation passes; and a first detector (14), positioned in the radiating direction downstream of said first band-pass filter and used for detecting the radiation intensity falling thereon. Said optical band-pass filter (10) has a band-pass which lies within the wavelength range of 4.38 .mu.m-4.47 .mu.m for measuring the total concentration of carbon dioxide by means of the absorption spectrum of a molecule .sup.13 CO.sub.2 produced by a carbon isotope .sup.13 C.

摘要翻译： 本发明涉及一种用于基于红外辐射（2）的吸收来确定气体混合物中至少二氧化碳浓度的方法和装置，所述装置包括：辐射源（1），由此发射的辐射 对准以穿过含有要分析的气体混合物（6）的测量池（4）; 光学带通滤波器（10），其对第一波长带透射并且位于从测量单元出射的辐射路径上或进入辐射通过的测量单元; 以及第一检测器（14），其位于所述第一带通滤波器的下游的辐射方向，并用于检测落在其上的辐射强度。 所述光学带通滤波器（10）具有位于4.38μm〜4.47μm的波长范围内的带通通过由碳制成的分子13CO 2的吸收光谱来测定二氧化碳的总浓度 同位素13C。