公开(公告)号：US20170010208A1

公开(公告)日：2017-01-12

申请号：US15115693

申请日：2015-01-15

Applicant: AVL EMISSION TEST SYSTEMS GMBH

Inventor： STEPHAN FETZNER

IPC: G01N21/3504 ,  G01N21/39 ,  F04F5/50 ,  G01N21/05

CPC classification number: G01N21/3504 ,  F04F5/50 ,  G01L19/0092 ,  G01N21/05 ,  G01N21/39 ,  G01N2021/399

Abstract: A device for determining a concentration of at least one gas in a sample gas flow by infrared absorption spectroscopy. The device includes an infrared radiation source which emits a radiation which is conducted through an analysis cell, a feed line, the sample gas flow which is conducted into and out of the analysis cell via the feed line, a detector which measures an absorption spectrum arising in the analysis cell, a suction jet pump which includes a propellant gas connection, and a propellant gas line which extends to the propellant gas connection of the suction jet pump. The suction jet pump is arranged downstream of the analysis cell and feeds the sample gas flow through the analysis cell via the feed line. The propellant gas line includes a regulating valve which regulates a propellant pressure in the propellant gas line.

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。 该装置包括红外辐射源，其发射通过分析单元传送的辐射，馈送线，经由馈送线进入和离开分析单元的样品气体流;测量所产生的吸收光谱的检测器 在分析池中，包括推进剂气体连接的吸入喷射泵和延伸到吸入喷射泵的推进剂气体连接的推进剂气体管线。 抽吸喷射泵布置在分析池的下游，并且通过进料管将样品气体流通过分析池。 推进剂气体管线包括调节推进剂气体管线中的推进剂压力的调节阀。

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。