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Multiple reflection type cell and analyzer

A technology with multiple reflections and reflective surfaces, which can be used in measuring devices, analyzing materials, analyzing gas mixtures, etc., and can solve the problem of wasting optical path length

Active Publication Date: 2017-11-24
HORIBA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the sample gas and the reflection member are separated, not only the corresponding optical path length is wasted, but also the entire unit is enlarged in order to obtain the desired optical path length

Method used

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  • Multiple reflection type cell and analyzer
  • Multiple reflection type cell and analyzer
  • Multiple reflection type cell and analyzer

Examples

Experimental program
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Effect test

Embodiment Construction

[0044] One embodiment of an analysis device using the multiple reflection type cell of the present invention will be described below with reference to the drawings.

[0045] The analysis device 100 of the present embodiment is an exhaust gas analysis device that measures the concentration of a plurality of components contained in exhaust gas, which is sample gas exhausted from an internal combustion engine such as an automobile, for example, as time-series data.

[0046] Specific as figure 1 As shown, the analysis device 100 uses the sample sampling unit 101 to sample part or all of the exhaust gas emitted from the exhaust pipe of an automobile, and the exhaust gas sampled by the sample sampling unit 101 is not diluted. , import the multiple reflection type unit 102, utilize the FTIR method to measure such as carbon dioxide (CO2) in the exhaust gas 2 ), nitrogen oxides (NOx) and other various concentrations of multiple components.

[0047] In addition, in the analysis device...

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PUM

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Abstract

This invention is a multiple reflection type cell that makes it possible to reduce a dead space resulting from a position adjusting mechanism and to adjust the light to a desired optical path length without complicating a structure. The multiple reflection type cell comprises a cell body where a cell chamber is formed, two or more reflecting members that are mounted on the cell body and whose reflecting surfaces locate in the cell chamber, and a position adjusting mechanism that adjusts a position of the reflecting member relative to the cell body. The cell body has a mounting part that communicates the cell chamber and the outside and on which the reflecting members are mounted. A seal member that seals a gap between the cell chamber and the outside of the cell body is arranged between the reflecting member mounted on the mounting part and the cell body so that the gap between the cell chamber and the outsider of the cell body is sealed by the seal member.

Description

technical field [0001] The present invention relates to a multi-reflection unit that reflects incident light multiple times and emits it to the outside, and an analysis device using the multi-reflection unit. Background technique [0002] For example, in absorbance analysis of a gas to be measured using the FTIR (Fourier Transform Infrared Spectroscopy) method, the length of the optical path of light passing through the gas to be measured is increased while reducing the cell length of the cell into which the gas to be measured is introduced. , using a white-light multiple reflection unit having a plurality of reflecting surfaces (refer to Patent Document 1 (Japanese Patent Laid-Open No. Hei 9-101257), Patent Document 2 (Japanese Patent Laid-Open No. Hei 8-35926)). [0003] In such a multiple reflection type unit, in order to obtain a desired optical path length, the reflective member having the reflective surface is finely adjusted using a position adjustment mechanism such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/01
CPCG01N21/01G01N21/3504G01N2021/0112G01N21/0303G01N21/031G01N33/0037G01N33/004G01N2021/3595G01N2201/0227Y02A50/20G01N2201/0636
Inventor 赤松武中嶋嘉之
Owner HORIBA LTD
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