NL280130A - - Google Patents

Info

Publication number
NL280130A
NL280130A NL280130DA NL280130A NL 280130 A NL280130 A NL 280130A NL 280130D A NL280130D A NL 280130DA NL 280130 A NL280130 A NL 280130A
Authority
NL
Netherlands
Application number
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.)
Publication of NL280130A publication Critical patent/NL280130A/xx

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
    • G01N21/25—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
    • 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
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • 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
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection

Landscapes

  • 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)
NL280130D 1961-06-26 NL280130A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US119683A US3171027A (en) 1961-06-26 1961-06-26 Infrared atmospheric contamination detector system with the detector interrupted at a sub-harmonic frequency of the source

Publications (1)

Publication Number Publication Date
NL280130A true NL280130A (zh)

Family

ID=22385737

Family Applications (1)

Application Number Title Priority Date Filing Date
NL280130D NL280130A (zh) 1961-06-26

Country Status (4)

Country Link
US (1) US3171027A (zh)
DE (1) DE1206626B (zh)
GB (1) GB962703A (zh)
NL (1) NL280130A (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700890A (en) * 1970-11-02 1972-10-24 Bell Telephone Labor Inc Measurement of gas impurity concentration by infrared absorption spectroscopy
US3706497A (en) * 1970-11-05 1972-12-19 Lindberg Arne R Method and apparatus for determining colorimetric concentrations
DE2407133B2 (de) * 1974-02-15 1976-12-09 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Verfahren und vorrichtung zur bestimmung von stickoxid
US4069420A (en) * 1976-03-08 1978-01-17 Cavitron Corporation Optical gas analyzer
US4083367A (en) * 1976-07-28 1978-04-11 Andros Incorporated Method and apparatus for pulmonary function analysis
JPS5399985A (en) * 1977-02-12 1978-08-31 Horiba Ltd Optical system apparatus
DE3064346D1 (de) * 1979-02-22 1983-09-01 Beckman Instruments Inc Non-dispersive infrared analyzers
JPS6067929A (ja) * 1983-09-24 1985-04-18 Nippon Steel Corp 高温物体表面撮像法および装置
JPS61133841A (ja) * 1984-12-04 1986-06-21 Fuji Electric Corp Res & Dev Ltd 赤外線分析計
US5076699A (en) * 1989-05-01 1991-12-31 Rosemount Analytical Inc. Method and apparatus for remotely and portably measuring a gas of interest
US5210702A (en) * 1990-12-26 1993-05-11 Colorado Seminary Apparatus for remote analysis of vehicle emissions
US5401967A (en) * 1990-12-26 1995-03-28 Colorado Seminary Dba University Of Denver Apparatus for remote analysis of vehicle emissions
US5426569A (en) * 1994-03-07 1995-06-20 Midwest Research Institute Method and apparatus for simulating atomospheric absorption of solar energy due to water vapor and CO2
US5831267A (en) * 1997-02-24 1998-11-03 Envirotest Systems Corp. Method and apparatus for remote measurement of exhaust gas
US6230087B1 (en) 1998-07-15 2001-05-08 Envirotest Systems Corporation Vehicular running loss detecting system
US6723989B1 (en) 1998-09-17 2004-04-20 Envirotest Systems Corporation Remote emissions sensing system and method with a composite beam of IR and UV radiation that is not split for detection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678581A (en) * 1949-11-30 1954-05-18 Rca Corp Signal comparison apparatus
US2775160A (en) * 1952-11-26 1956-12-25 Laurence W Foskett Apparatus for absorption spectra analysis
US2926253A (en) * 1954-12-22 1960-02-23 Distillers Co Yeast Ltd Radiation analysis
FR1132413A (fr) * 1955-05-07 1957-03-11 Onera (Off Nat Aerospatiale) Perfectionnements apportés aux moyens pour analyser des mélanges de fluides par l'absorption d'un rayonnement
US2930893A (en) * 1956-05-21 1960-03-29 Lane B Carpenter Long path infrared detection of atmospheric contaminants
NL238910A (zh) * 1958-05-06
NL247343A (zh) * 1958-11-04
US3103586A (en) * 1958-12-08 1963-09-10 Gen Mills Inc Passive infrared ranging device using absorption bands of water vapor or carbon dioxide

Also Published As

Publication number Publication date
DE1206626B (de) 1965-12-09
GB962703A (en) 1964-07-01
US3171027A (en) 1965-02-23

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