FR2797954B1 - Detecteur de gaz a plage de mesure optique ouverte - Google Patents

Detecteur de gaz a plage de mesure optique ouverte

Info

Publication number
FR2797954B1
FR2797954B1 FR0010816A FR0010816A FR2797954B1 FR 2797954 B1 FR2797954 B1 FR 2797954B1 FR 0010816 A FR0010816 A FR 0010816A FR 0010816 A FR0010816 A FR 0010816A FR 2797954 B1 FR2797954 B1 FR 2797954B1
Authority
FR
France
Prior art keywords
optical
measurement range
gas detector
optical measurement
detector
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
FR0010816A
Other languages
English (en)
Other versions
FR2797954A1 (fr
Inventor
Ralf Stolle
Hartmut Stark
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.)
Draeger Safety AG and Co KGaA
Original Assignee
Draeger Sicherheitstechnik GmbH
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 Draeger Sicherheitstechnik GmbH filed Critical Draeger Sicherheitstechnik GmbH
Publication of FR2797954A1 publication Critical patent/FR2797954A1/fr
Application granted granted Critical
Publication of FR2797954B1 publication Critical patent/FR2797954B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N21/35—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
    • G01N2021/3513—Open path with an instrumental source

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)
FR0010816A 1999-08-26 2000-08-22 Detecteur de gaz a plage de mesure optique ouverte Expired - Fee Related FR2797954B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19910280 1999-08-26

Publications (2)

Publication Number Publication Date
FR2797954A1 FR2797954A1 (fr) 2001-03-02
FR2797954B1 true FR2797954B1 (fr) 2007-09-07

Family

ID=7900210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0010816A Expired - Fee Related FR2797954B1 (fr) 1999-08-26 2000-08-22 Detecteur de gaz a plage de mesure optique ouverte

Country Status (1)

Country Link
FR (1) FR2797954B1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2393295A1 (fr) * 1977-05-31 1978-12-29 Snecma Appareil de mesure du pouvoir transmissif de l'atmosphere
GB9015800D0 (en) * 1990-07-18 1990-09-05 Secretary Trade Ind Brit Optical long-path monitoring apparatus
GB2274163B (en) * 1993-01-12 1996-11-20 Pollution Monitor Syst Ltd Gas analyser
US5591975A (en) * 1993-09-10 1997-01-07 Santa Barbara Research Center Optical sensing apparatus for remotely measuring exhaust gas composition of moving motor vehicles
US5751216A (en) * 1994-09-27 1998-05-12 Hochiki Kabushiki Kaisha Projected beam-type smoke detector and receiving unit
US5459574A (en) * 1994-10-14 1995-10-17 Spectral Sciences Inc. Off-line-locked laser diode species monitor system
DE19611290C2 (de) * 1996-03-22 1998-04-16 Draegerwerk Ag Gassensor
US6044329A (en) * 1997-06-19 2000-03-28 Kware Software Systems Inc. Laser gas analyzer and a method of operating the laser to reduce non-linearity errors

Also Published As

Publication number Publication date
FR2797954A1 (fr) 2001-03-02

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Legal Events

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Year of fee payment: 17

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Effective date: 20200405