公开(公告)号：US20170010207A1

公开(公告)日：2017-01-12

申请号：US15112690

申请日：2015-01-22

Applicant: AVL EMISSION TEST SYSTEMS GMBH

Inventor： STEPHAN FETZNER ,  RAIMUND BRUNNER ,  ULRICH ULMER

IPC: G01N21/3504 ,  G01N21/03 ,  G01N33/00

CPC classification number: G01N21/3504 ,  G01N21/031 ,  G01N21/0332 ,  G01N21/05 ,  G01N33/0016

Abstract: A device for determining a concentration of at least one gas in a sample gas flow by infrared absorption spectroscopy. The device includes a gas cell which includes a thermal insulation, a chamber, a heating source arranged within the thermal insulation which heats the sample gas flow to a desired temperature, and a sample gas duct having an outlet. The sample gas duct is heated by the heating source upstream of the outlet. An infrared radiation source emits a radiation which is conducted through the chamber of the gas cell. The sample gas flow is conducted into the chamber and into the radiation. A detector has the radiation exiting the chamber conducted thereto to determine an absorption spectrum.

Abstract translation: 一种用于通过红外吸收光谱测定样品气体流中的至少一种气体的浓度的装置。 该装置包括气室，该气室包括隔热层，室，布置在隔热层内的加热源，将样品气体流加热到所需温度，以及具有出口的样品气体导管。 样品气体管道由出口上游的加热源加热。 红外辐射源发射通过气室的腔室传导的辐射。 样品气体流动进入腔室并进入辐射。 检测器具有离开室的辐射，从而确定吸收光谱。