NO20051214L - Photoacoustic gas foils and process for their preparation - Google Patents

Photoacoustic gas foils and process for their preparation

Info

Publication number
NO20051214L
NO20051214L NO20051214A NO20051214A NO20051214L NO 20051214 L NO20051214 L NO 20051214L NO 20051214 A NO20051214 A NO 20051214A NO 20051214 A NO20051214 A NO 20051214A NO 20051214 L NO20051214 L NO 20051214L
Authority
NO
Norway
Prior art keywords
microphone
measuring
conductor plate
photoacoustic gas
module
Prior art date
Application number
NO20051214A
Other languages
Norwegian (no)
Other versions
NO20051214D0 (en
Inventor
Peter Steiner
Rolf Pleisch
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of NO20051214D0 publication Critical patent/NO20051214D0/en
Publication of NO20051214L publication Critical patent/NO20051214L/en

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
    • 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

Landscapes

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

Abstract

En fotoakustisk gassføler inneholder en måle- og en referansecelle (1 henholdsvis 2), en stråleinnretning med en lyskilde (4), og en mikrofonanordning for målingen av trykkforskjellen mellom måle- og referansecellen (1 henholdsvis 2). Mikrofonanordningen og lyskilden (4) er tilveiebrakt på en mikrofon- henholdsvis lampelederplate (8 henholdsvis 10) og er sammen med måle- og referansecellen (1 henholdsvis 2) plassert på en felles modullederplate (P). Mikrofonanordningen inneholder en differansemikrofon (3) som er utformet som en såkalt Noise Canceling mikrofon av den type som anvendes i mobiltelefoner. Fremgangsmåten for fremstilling av den fotoakustiske gassføler er kjennetegnet ved at den på lampelederplaten (10) tilveiebrakte lyskilde (4), den på mikrofonlederplaten (8) tilveiebrakte mikrofonanordning så vel som måle- og referansecellene (1 henholdsvis 2) formonteres til en målemodul (M) ved hjelp av en batch-prosess, hvilken målemodul (M) plasseres på modullederplaten (P).A photoacoustic gas sensor contains a measuring and a reference cell (1 and 2, respectively), a beam device with a light source (4), and a microphone device for measuring the pressure difference between the measuring and reference cell (1 and 2, respectively). The microphone device and light source (4) are provided on a microphone and lamp conductor plate (8 and 10, respectively) and, together with the measuring and reference cell (1 and 2, respectively), are placed on a common module conductor plate (P). The microphone device contains a difference microphone (3) which is designed as a so-called Noise Canceling microphone of the type used in mobile phones. The method of manufacturing the photoacoustic gas sensor is characterized in that the light source (4) provided on the lamp conductor plate (10), the microphone device provided on the microphone conductor plate (8) as well as the measuring and reference cells (1 and 2, respectively) are fitted to a measuring module (M). by means of a batch process, which measurement module (M) is placed on the module conductor plate (P).

NO20051214A 2004-03-08 2005-03-08 Photoacoustic gas foils and process for their preparation NO20051214L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04005481A EP1574840A1 (en) 2004-03-08 2004-03-08 Photoacoustic gas sensor and manufacturing process thereof

Publications (2)

Publication Number Publication Date
NO20051214D0 NO20051214D0 (en) 2005-03-08
NO20051214L true NO20051214L (en) 2005-09-09

Family

ID=34814266

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20051214A NO20051214L (en) 2004-03-08 2005-03-08 Photoacoustic gas foils and process for their preparation

Country Status (7)

Country Link
EP (1) EP1574840A1 (en)
KR (1) KR20060043413A (en)
CN (1) CN100489495C (en)
AU (1) AU2005200848A1 (en)
HK (1) HK1083124A1 (en)
NO (1) NO20051214L (en)
PL (1) PL373063A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006048839B4 (en) * 2006-10-16 2010-01-07 Eads Deutschland Gmbh Photoacoustic gas sensor device with several measuring cells
US7886576B2 (en) * 2006-11-06 2011-02-15 Mine Safety Appliances Company Photoacoustic gas sensor
US8848191B2 (en) 2012-03-14 2014-09-30 Honeywell International Inc. Photoacoustic sensor with mirror
US10451589B2 (en) * 2016-06-03 2019-10-22 Infineon Technologies Ag Acoustic wave detector
US10302554B2 (en) 2016-06-03 2019-05-28 Ingineon Technologies Ag Acoustic wave detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679076A5 (en) * 1989-06-13 1991-12-13 Oscar Dr Sc Nat Oehler
US5651074A (en) * 1995-05-11 1997-07-22 Lucent Technologies Inc. Noise canceling gradient microphone assembly
ATE266861T1 (en) * 1995-09-04 2004-05-15 Siemens Building Tech Ag PHOTOACOUSTIC GAS SENSOR AND USE THEREOF
DE59712692D1 (en) * 1997-01-25 2006-08-24 Siemens Schweiz Ag Optoacoustic gas sensor
EP1195597A1 (en) * 2000-10-09 2002-04-10 Siemens Building Technologies AG Optoacoustic measuring arrangement and use thereof

Also Published As

Publication number Publication date
HK1083124A1 (en) 2006-06-23
PL373063A1 (en) 2005-09-19
EP1574840A1 (en) 2005-09-14
CN1667395A (en) 2005-09-14
AU2005200848A1 (en) 2005-09-22
NO20051214D0 (en) 2005-03-08
KR20060043413A (en) 2006-05-15
CN100489495C (en) 2009-05-20

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