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WO2011114096A3 - Multiple optical pathlength gas cell - Google Patents

Multiple optical pathlength gas cell Download PDF

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Publication number
WO2011114096A3
WO2011114096A3 PCT/GB2011/000359 GB2011000359W WO2011114096A3 WO 2011114096 A3 WO2011114096 A3 WO 2011114096A3 GB 2011000359 W GB2011000359 W GB 2011000359W WO 2011114096 A3 WO2011114096 A3 WO 2011114096A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas cell
multiple optical
optical pathlength
pathlength gas
optical
Prior art date
Application number
PCT/GB2011/000359
Other languages
French (fr)
Other versions
WO2011114096A2 (en
Inventor
Ruth Lindley
Lain Howieson
Original Assignee
Cascade Technologies Limited
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 Cascade Technologies Limited filed Critical Cascade Technologies Limited
Publication of WO2011114096A2 publication Critical patent/WO2011114096A2/en
Publication of WO2011114096A3 publication Critical patent/WO2011114096A3/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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/031—Multipass arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • 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
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • 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
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G01N2021/396—Type of laser source
    • G01N2021/399—Diode laser
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/066—Modifiable path; multiple paths in one sample
    • G01N2201/0662—Comparing measurements on two or more paths in one sample
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/066—Modifiable path; multiple paths in one sample
    • G01N2201/0668—Multiple paths; optimisable path length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/069—Supply of sources
    • G01N2201/0696—Pulsed
    • G01N2201/0697—Pulsed lasers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General 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)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Measuring Cells (AREA)

Abstract

An optical spectrometer, for example a gas or liquid optical sensor or detector that has a single measurement cell that supports two or more optical paths.
PCT/GB2011/000359 2010-03-16 2011-03-15 Multiple pathlength gas cell WO2011114096A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1004353.7 2010-03-16
GBGB1004353.7A GB201004353D0 (en) 2010-03-16 2010-03-16 Multiple pathlength gas cell

Publications (2)

Publication Number Publication Date
WO2011114096A2 WO2011114096A2 (en) 2011-09-22
WO2011114096A3 true WO2011114096A3 (en) 2011-11-17

Family

ID=42261660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/000359 WO2011114096A2 (en) 2010-03-16 2011-03-15 Multiple pathlength gas cell

Country Status (2)

Country Link
GB (1) GB201004353D0 (en)
WO (1) WO2011114096A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122223A (en) * 2014-08-07 2014-10-29 中国科学院上海微系统与信息技术研究所 Double-optical-path multi-gas infrared sensor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10823671B2 (en) 2015-10-17 2020-11-03 General Electric Company Gas detector and method of detection
JP7075862B2 (en) 2017-10-16 2022-05-26 株式会社堀場製作所 Analysis equipment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246877A (en) * 1990-07-25 1992-02-12 Gen Analysis Corp Long path gas absorption cell
EP0647845A1 (en) * 1993-10-08 1995-04-12 Geotechnical Instruments (UK) Limited Gas analyser
US5925881A (en) * 1997-04-24 1999-07-20 Dragerwerk Ag Infrared absorption measuring cell
EP1167949A1 (en) * 1999-03-26 2002-01-02 Japan Science and Technology Corporation Isotopomer absorption spectral analyzer and its method
US20050157303A1 (en) * 2002-04-09 2005-07-21 Nigel Langford Semiconductor diode laser spectrometer arrangement and method
US20060119851A1 (en) * 2002-09-06 2006-06-08 Bounaix Fabrice M S Method and device for detecting gases by absorption spectroscopy
GB2442980A (en) * 2006-10-18 2008-04-23 Autoliv Dev Method and apparatus for determining carbon dioxide with different isotopes in exhaled breath
WO2008065338A1 (en) * 2006-11-29 2008-06-05 Cascade Technologies Limited Portal
US20090268204A1 (en) * 2008-04-24 2009-10-29 Bah Holdings Llc Optical absorption gas analyser

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246877A (en) * 1990-07-25 1992-02-12 Gen Analysis Corp Long path gas absorption cell
EP0647845A1 (en) * 1993-10-08 1995-04-12 Geotechnical Instruments (UK) Limited Gas analyser
US5925881A (en) * 1997-04-24 1999-07-20 Dragerwerk Ag Infrared absorption measuring cell
EP1167949A1 (en) * 1999-03-26 2002-01-02 Japan Science and Technology Corporation Isotopomer absorption spectral analyzer and its method
US20050157303A1 (en) * 2002-04-09 2005-07-21 Nigel Langford Semiconductor diode laser spectrometer arrangement and method
US20060119851A1 (en) * 2002-09-06 2006-06-08 Bounaix Fabrice M S Method and device for detecting gases by absorption spectroscopy
GB2442980A (en) * 2006-10-18 2008-04-23 Autoliv Dev Method and apparatus for determining carbon dioxide with different isotopes in exhaled breath
WO2008065338A1 (en) * 2006-11-29 2008-06-05 Cascade Technologies Limited Portal
US20090268204A1 (en) * 2008-04-24 2009-10-29 Bah Holdings Llc Optical absorption gas analyser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122223A (en) * 2014-08-07 2014-10-29 中国科学院上海微系统与信息技术研究所 Double-optical-path multi-gas infrared sensor
CN104122223B (en) * 2014-08-07 2017-02-08 中国科学院上海微系统与信息技术研究所 Double-optical-path multi-gas infrared sensor

Also Published As

Publication number Publication date
GB201004353D0 (en) 2010-04-28
WO2011114096A2 (en) 2011-09-22

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