GB2395260B - Gas sensors - Google Patents

Gas sensors

Info

Publication number
GB2395260B
GB2395260B GB0225996A GB0225996A GB2395260B GB 2395260 B GB2395260 B GB 2395260B GB 0225996 A GB0225996 A GB 0225996A GB 0225996 A GB0225996 A GB 0225996A GB 2395260 B GB2395260 B GB 2395260B
Authority
GB
United Kingdom
Prior art keywords
gas sensors
sensors
gas
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB0225996A
Other versions
GB0225996D0 (en
GB2395260A (en
Inventor
Andrew Stephen Hayward
Graham Paul Hopkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teledyne UK Ltd
e2v Technologies Ltd
Original Assignee
e2v Technologies UK Ltd
e2v Technologies Ltd
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 e2v Technologies UK Ltd, e2v Technologies Ltd filed Critical e2v Technologies UK Ltd
Priority to GB0225996A priority Critical patent/GB2395260B/en
Publication of GB0225996D0 publication Critical patent/GB0225996D0/en
Publication of GB2395260A publication Critical patent/GB2395260A/en
Application granted granted Critical
Publication of GB2395260B publication Critical patent/GB2395260B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4821—Determining level or depth of anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
    • A61B5/0836—Measuring rate of CO2 production
    • 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
    • G01N21/05—Flow-through cuvettes
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Pulmonology (AREA)
  • Physiology (AREA)
  • Obesity (AREA)
  • Emergency Medicine (AREA)
  • Anesthesiology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB0225996A 2002-11-07 2002-11-07 Gas sensors Expired - Fee Related GB2395260B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0225996A GB2395260B (en) 2002-11-07 2002-11-07 Gas sensors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0225996A GB2395260B (en) 2002-11-07 2002-11-07 Gas sensors

Publications (3)

Publication Number Publication Date
GB0225996D0 GB0225996D0 (en) 2002-12-11
GB2395260A GB2395260A (en) 2004-05-19
GB2395260B true GB2395260B (en) 2005-11-02

Family

ID=9947396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0225996A Expired - Fee Related GB2395260B (en) 2002-11-07 2002-11-07 Gas sensors

Country Status (1)

Country Link
GB (1) GB2395260B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044142B3 (en) * 2004-09-13 2006-06-01 Robert Bosch Gmbh Spectroscopic gas sensor
GB2426578A (en) 2005-05-27 2006-11-29 Thorn Security A flame detector having a pulsing optical test source that simulates the frequency of a flame
GB2426577A (en) 2005-05-27 2006-11-29 Thorn Security An optical detector with a reflector outside of its housing, and a plurality of sensors inside of its housing
GB0705356D0 (en) 2007-03-21 2007-04-25 Alphasense Ltd Optical absorption gas sensor
KR102643353B1 (en) * 2016-12-06 2024-03-07 엘지전자 주식회사 gas sensor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180734A (en) * 1977-02-18 1979-12-25 Siemens Aktiengesellschaft Gas analyzer
US4500207A (en) * 1981-11-14 1985-02-19 Ferranti, Plc Non-dispersive optical determination of gas concentration
EP0447598A1 (en) * 1990-03-23 1991-09-25 Nihoh Kohden Corporation Infrared detecting circuit
US5125742A (en) * 1990-07-25 1992-06-30 General Analysis Corporation Long path gas absorption cell
US5170064A (en) * 1989-09-29 1992-12-08 Atomic Energy Of Canada Limited Infrared-based gas detector using a cavity having elliptical reflecting surface
GB2260808A (en) * 1991-10-22 1993-04-28 Marconi Gec Ltd Exhaust gas particle sensor
US5222389A (en) * 1990-04-02 1993-06-29 Gaztech International Corporation Multi-channel gas sample chamber
US5326973A (en) * 1992-01-03 1994-07-05 Artema Medical Ab Device for gas analysis
US5341214A (en) * 1989-09-06 1994-08-23 Gaztech International Corporation NDIR gas analysis using spectral ratioing technique
GB2317010A (en) * 1996-09-04 1998-03-11 Eev Ltd Gas sensor detecting only non-reflected light

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180734A (en) * 1977-02-18 1979-12-25 Siemens Aktiengesellschaft Gas analyzer
US4500207A (en) * 1981-11-14 1985-02-19 Ferranti, Plc Non-dispersive optical determination of gas concentration
US5341214A (en) * 1989-09-06 1994-08-23 Gaztech International Corporation NDIR gas analysis using spectral ratioing technique
US5170064A (en) * 1989-09-29 1992-12-08 Atomic Energy Of Canada Limited Infrared-based gas detector using a cavity having elliptical reflecting surface
EP0447598A1 (en) * 1990-03-23 1991-09-25 Nihoh Kohden Corporation Infrared detecting circuit
US5222389A (en) * 1990-04-02 1993-06-29 Gaztech International Corporation Multi-channel gas sample chamber
US5125742A (en) * 1990-07-25 1992-06-30 General Analysis Corporation Long path gas absorption cell
GB2260808A (en) * 1991-10-22 1993-04-28 Marconi Gec Ltd Exhaust gas particle sensor
US5326973A (en) * 1992-01-03 1994-07-05 Artema Medical Ab Device for gas analysis
GB2317010A (en) * 1996-09-04 1998-03-11 Eev Ltd Gas sensor detecting only non-reflected light

Also Published As

Publication number Publication date
GB0225996D0 (en) 2002-12-11
GB2395260A (en) 2004-05-19

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130502 AND 20130508

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20131107