GB8517996D0 - Infrared fibre-optic gas detector - Google Patents

Infrared fibre-optic gas detector

Info

Publication number
GB8517996D0
GB8517996D0 GB858517996A GB8517996A GB8517996D0 GB 8517996 D0 GB8517996 D0 GB 8517996D0 GB 858517996 A GB858517996 A GB 858517996A GB 8517996 A GB8517996 A GB 8517996A GB 8517996 D0 GB8517996 D0 GB 8517996D0
Authority
GB
United Kingdom
Prior art keywords
gas detector
infrared fibre
optic gas
optic
fibre
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.)
Granted
Application number
GB858517996A
Other versions
GB2163251A (en
GB2163251B (en
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.)
Elektrisk Bureau AS
Original Assignee
Elektrisk Bureau AS
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 Elektrisk Bureau AS filed Critical Elektrisk Bureau AS
Publication of GB8517996D0 publication Critical patent/GB8517996D0/en
Publication of GB2163251A publication Critical patent/GB2163251A/en
Application granted granted Critical
Publication of GB2163251B publication Critical patent/GB2163251B/en
Expired legal-status Critical Current

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
    • 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
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J2003/1226—Interference filters
    • G01J2003/1243—Pivoting IF or other position variation
    • 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
    • G01N2201/062—LED's
    • G01N2201/0621—Supply
    • 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
    • G01N2201/08—Optical fibres; light guides
    • 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
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/126—Microprocessor processing

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)
  • Glass Compositions (AREA)
GB08517996A 1984-07-19 1985-07-17 Infrared gas detector Expired GB2163251B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO842952A NO156306C (en) 1984-07-19 1984-07-19 INFRAR FIBER OPTICAL GAS DETECTOR.

Publications (3)

Publication Number Publication Date
GB8517996D0 true GB8517996D0 (en) 1985-08-21
GB2163251A GB2163251A (en) 1986-02-19
GB2163251B GB2163251B (en) 1988-03-02

Family

ID=19887770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08517996A Expired GB2163251B (en) 1984-07-19 1985-07-17 Infrared gas detector

Country Status (2)

Country Link
GB (1) GB2163251B (en)
NO (1) NO156306C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804134A1 (en) * 1988-02-11 1989-08-24 Felten & Guilleaume Energie Method and apparatus for measuring the concentration of a foreign gas in a gas mixture by using a Moiré filter
DE3813152A1 (en) * 1988-04-20 1989-11-02 Felten & Guilleaume Energie DEVICE WITH AN OPTICAL GAS SENSOR FOR THE DENSITY MEASUREMENT AND MONITORING OF GASES
FI91021C (en) * 1988-11-04 1994-04-25 Instrumentarium Oy Apparatus for the identification of gases and measurement of the content and method for the identification of gases
IT1240329B (en) * 1990-03-20 1993-12-07 Tecsa EQUIPMENT FOR DETECTION OF INFRARED LASER GAS AND OPTICAL FIBERS
GB9108978D0 (en) * 1991-04-26 1991-06-26 Siemens Plessey Controls Ltd Improvements in or relating to optical gas detectors
EP0510856A3 (en) * 1991-04-26 1993-12-22 Siemens Plessey Controls Ltd Improvements in or relating to optical gas detectors
GB9319001D0 (en) * 1993-09-14 1993-10-27 Europ Gas Turbines Ltd Steam wetness probe
GB2290139A (en) * 1994-06-11 1995-12-13 Atomic Energy Authority Uk Gas concentration measurement
FR2726084A1 (en) * 1994-10-20 1996-04-26 Eprest Electronique Profession Light absorption gas detector for detection of inflammable and explosive gases in the workplace or home
DE19650302A1 (en) * 1996-12-04 1998-06-10 Ruhrgas Ag Method and device for determining the gas quality of a gas mixture
DE69811098T2 (en) 1997-10-10 2003-10-09 Zellweger Analytics Ltd OPTICAL GAS DETECTION
DE19900129C2 (en) * 1999-01-05 2001-09-13 Flow Comp Systemtechnik Gmbh Gas quality determination
EP1103804B1 (en) * 1999-11-24 2005-08-31 Siemens Aktiengesellschaft Method for detection of natural gas
CN101251482B (en) * 2008-03-28 2010-10-06 山东省科学院激光研究所 Firedamp remote optical fiber laser detection instrument for mine
US10168276B1 (en) * 2017-11-08 2019-01-01 Itron, Inc. Identifying targeted gaseous chemical compound

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281645A (en) * 1977-06-28 1981-08-04 Duke University, Inc. Method and apparatus for monitoring metabolism in body organs
GB2008745A (en) * 1977-11-03 1979-06-06 Anacon Instr Ltd Spectrophotometer
JPS6039536A (en) * 1983-08-12 1985-03-01 Hochiki Corp Gas sensor

Also Published As

Publication number Publication date
GB2163251A (en) 1986-02-19
NO156306B (en) 1987-05-18
NO842952L (en) 1986-01-20
NO156306C (en) 1987-09-02
GB2163251B (en) 1988-03-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee