BR9612406A - Sensores de gás de análise infravermelha passiva e montagens aplicáveis de detector de múltiplos canais - Google Patents

Sensores de gás de análise infravermelha passiva e montagens aplicáveis de detector de múltiplos canais

Info

Publication number
BR9612406A
BR9612406A BR9612406-7A BR9612406A BR9612406A BR 9612406 A BR9612406 A BR 9612406A BR 9612406 A BR9612406 A BR 9612406A BR 9612406 A BR9612406 A BR 9612406A
Authority
BR
Brazil
Prior art keywords
passive infrared
source
output
gas
detector
Prior art date
Application number
BR9612406-7A
Other languages
English (en)
Inventor
Jacob Y Wong
Original Assignee
Engelhard Sensor Technologies
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 Engelhard Sensor Technologies filed Critical Engelhard Sensor Technologies
Publication of BR9612406A publication Critical patent/BR9612406A/pt

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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
    • G01N21/59—Transmissivity
    • G01N21/61—Non-dispersive gas analysers
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G01N21/3518—Devices using gas filter correlation techniques; Devices using gas pressure modulation techniques
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (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)

Abstract

Patente de Invenção: <B>"SENSORES DE GáS DE ANáLISE INFRAVERMELHA PASSIVA E MONTAGENS APLICáVEIS DE DETECTOR DE MúLTIPLOS CANAIS"<D>. Detector de gás infravermelho de fonte passiva (33) que usa uma fonte infravermelha passiva e o espaço entre a montagem de detector (3, 79) e a fonte como a câmara de amostra. O detector de gás (33) inclui uma montagem de detector infravermelho (3, 79) para produzir uma primeira, uma segunda e uma terceira saídas, a primeira saída sendo indicativa da irradiação recebida em uma primeira faixa espectral não-neutra que é absorvível por um gás pré-selecionado a ser detectado, a segunda saída sendo indicativa da irradiação recebida em uma primeira faixa espectral neutra originária da fonte infravermelha passiva, e a terceira saída sendo indicativa da irradiação recebida em uma segunda faixa espectral neutra originária da fonte infravermelha passiva. Meios de processamento de sinal manipulam as três saídas determinar a concentração de gás a ser monitorado. Detectores adicionais podem ser acrescentados à montagem de detector para detectar a irradiação nas faixas espectrais características dos gases adicionais.
BR9612406-7A 1996-01-10 1996-12-26 Sensores de gás de análise infravermelha passiva e montagens aplicáveis de detector de múltiplos canais BR9612406A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/583,993 US5721430A (en) 1995-04-13 1996-01-10 Passive and active infrared analysis gas sensors and applicable multichannel detector assembles
PCT/US1996/020796 WO1997025613A1 (en) 1996-01-10 1996-12-26 Passive infrared analysis gas sensors and applicable multichannel detector assemblies

Publications (1)

Publication Number Publication Date
BR9612406A true BR9612406A (pt) 1999-12-28

Family

ID=24335453

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9612406-7A BR9612406A (pt) 1996-01-10 1996-12-26 Sensores de gás de análise infravermelha passiva e montagens aplicáveis de detector de múltiplos canais

Country Status (9)

Country Link
US (1) US5721430A (pt)
EP (1) EP0888532A1 (pt)
JP (1) JP2000503122A (pt)
KR (1) KR19990077161A (pt)
CN (1) CN1216108A (pt)
AU (1) AU1431497A (pt)
BR (1) BR9612406A (pt)
CA (1) CA2242293A1 (pt)
WO (1) WO1997025613A1 (pt)

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CN1216108A (zh) 1999-05-05
JP2000503122A (ja) 2000-03-14
US5721430A (en) 1998-02-24
CA2242293A1 (en) 1997-07-17
WO1997025613A1 (en) 1997-07-17
EP0888532A4 (pt) 1999-01-07
EP0888532A1 (en) 1999-01-07
AU1431497A (en) 1997-08-01
KR19990077161A (ko) 1999-10-25

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