AT511934A3 - Fotoakustische Messzelle - Google Patents

Fotoakustische Messzelle Download PDF

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Publication number
AT511934A3
AT511934A3 AT505902012A AT505902012A AT511934A3 AT 511934 A3 AT511934 A3 AT 511934A3 AT 505902012 A AT505902012 A AT 505902012A AT 505902012 A AT505902012 A AT 505902012A AT 511934 A3 AT511934 A3 AT 511934A3
Authority
AT
Austria
Prior art keywords
order
measuring cell
microphone tube
photoacoustic measuring
length
Prior art date
Application number
AT505902012A
Other languages
English (en)
Other versions
AT511934B1 (de
AT511934A2 (de
Inventor
Tristan Reinisch
Alexander Dr Bergmann
Robert Dipl Ing Diewald
Klaus-Christoph Dr Harms
Roland Dr Resel
Original Assignee
Avl List Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avl List Gmbh filed Critical Avl List Gmbh
Priority to AT505902012A priority Critical patent/AT511934B1/de
Publication of AT511934A2 publication Critical patent/AT511934A2/de
Priority to PCT/EP2013/074117 priority patent/WO2014090518A1/de
Publication of AT511934A3 publication Critical patent/AT511934A3/de
Application granted granted Critical
Publication of AT511934B1 publication Critical patent/AT511934B1/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2418—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics
    • G01N29/2425—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics optoacoustic fluid cells therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/021—Gases
    • G01N2291/0217—Smoke, combustion gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02408—Solids in gases, e.g. particle suspensions

Landscapes

  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Um die erzielbare Messgenauigkeit und das Detektionslimit einer fotoakustischen Messzelle (1) zu verbessern, wird vorgeschlagen, das Verhältnis der Länge L der Resonatorzelle (2) zur Länge I des Mikrophonrohrs (10) zu zu wählen, wobei n die Ordnung der axialen Schwingungsmode der stehenden akustischen Welle in der Resonatorzelle (2) und m die Ordnung der axialen Schwingungsmode der stehenden akustischen Welle im Mikrophonrohr (10) bezeichnet, und gleichzeitig der Querschnitt des Mikrophonrohrs (10) so gewählt wird, dass das durch den Schallaufnehmer (11) in Abhängigkeit von der Anregefrequenz (fM) aufgenommene akustische Signal ein ausgeprägtes Einzelmaximum (fR) aufweist.
AT505902012A 2012-12-14 2012-12-14 Fotoakustische Messzelle AT511934B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT505902012A AT511934B1 (de) 2012-12-14 2012-12-14 Fotoakustische Messzelle
PCT/EP2013/074117 WO2014090518A1 (de) 2012-12-14 2013-11-19 Fotoakustische messzelle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT505902012A AT511934B1 (de) 2012-12-14 2012-12-14 Fotoakustische Messzelle

Publications (3)

Publication Number Publication Date
AT511934A2 AT511934A2 (de) 2013-03-15
AT511934A3 true AT511934A3 (de) 2014-01-15
AT511934B1 AT511934B1 (de) 2014-06-15

Family

ID=47833604

Family Applications (1)

Application Number Title Priority Date Filing Date
AT505902012A AT511934B1 (de) 2012-12-14 2012-12-14 Fotoakustische Messzelle

Country Status (2)

Country Link
AT (1) AT511934B1 (de)
WO (1) WO2014090518A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT520793B1 (de) * 2017-12-28 2021-02-15 Avl List Gmbh Messvorrichtung zur Ermittlung einer Messgröße eines Messgases
CN109490211A (zh) * 2018-11-16 2019-03-19 安徽理工大学 一种带有抗噪功能的光声池
FR3089250B1 (fr) * 2018-11-30 2020-12-18 Faurecia Systemes Dechappement Ligne d’échappement comprenant un capteur photoacoustique pour mesurer au moins une concentration en gaz polluant et véhicule automobile comprenant une telle ligne d’échappement
US11143626B2 (en) * 2019-01-11 2021-10-12 Infineon Technologies Ag Photo-acoustic gas sensor with optimal reference path length
CN113607650A (zh) * 2021-06-22 2021-11-05 南方电网科学研究院有限责任公司 一种气体检测装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020194897A1 (en) * 2001-06-22 2002-12-26 William Patrick Arnott Photoacoustic instrument for measuring particles in a gas
AT6894U2 (de) * 2004-01-28 2004-05-25 Avl List Gmbh Messkammer für photoakustische sensoren
US20050210956A1 (en) * 2004-03-24 2005-09-29 Robert Anthony Crane Method of identifying and detecting the concentrations of multiple species by means of a spectrophone
DE102007043951A1 (de) * 2007-09-14 2009-04-09 Protronic Innovative Steuerungselektronik Gmbh Vorrichtung zur Detektion von Molekülen in Gasen
US20120118042A1 (en) * 2010-06-10 2012-05-17 Gillis Keith A Photoacoustic Spectrometer with Calculable Cell Constant for Quantitative Absorption Measurements of Pure Gases, Gaseous Mixtures, and Aerosols

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372149A (en) * 1980-11-17 1983-02-08 Zharov Vladimir P Laser-excited spectrophone

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020194897A1 (en) * 2001-06-22 2002-12-26 William Patrick Arnott Photoacoustic instrument for measuring particles in a gas
AT6894U2 (de) * 2004-01-28 2004-05-25 Avl List Gmbh Messkammer für photoakustische sensoren
US20050210956A1 (en) * 2004-03-24 2005-09-29 Robert Anthony Crane Method of identifying and detecting the concentrations of multiple species by means of a spectrophone
DE102007043951A1 (de) * 2007-09-14 2009-04-09 Protronic Innovative Steuerungselektronik Gmbh Vorrichtung zur Detektion von Molekülen in Gasen
US20120118042A1 (en) * 2010-06-10 2012-05-17 Gillis Keith A Photoacoustic Spectrometer with Calculable Cell Constant for Quantitative Absorption Measurements of Pure Gases, Gaseous Mixtures, and Aerosols

Also Published As

Publication number Publication date
AT511934B1 (de) 2014-06-15
AT511934A2 (de) 2013-03-15
WO2014090518A1 (de) 2014-06-19

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Effective date: 20171214