GB9114910D0 - Improvements in or relating to optical gas detectors - Google Patents

Improvements in or relating to optical gas detectors

Info

Publication number
GB9114910D0
GB9114910D0 GB919114910A GB9114910A GB9114910D0 GB 9114910 D0 GB9114910 D0 GB 9114910D0 GB 919114910 A GB919114910 A GB 919114910A GB 9114910 A GB9114910 A GB 9114910A GB 9114910 D0 GB9114910 D0 GB 9114910D0
Authority
GB
United Kingdom
Prior art keywords
relating
gas detectors
optical gas
optical
detectors
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.)
Withdrawn
Application number
GB919114910A
Other versions
GB2255178A (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.)
Siemens Plessey Controls Ltd
Original Assignee
Siemens Plessey Controls 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 Siemens Plessey Controls Ltd filed Critical Siemens Plessey Controls Ltd
Publication of GB9114910D0 publication Critical patent/GB9114910D0/en
Priority to EP19920303301 priority Critical patent/EP0510856A3/en
Priority to CA002066816A priority patent/CA2066816A1/en
Priority to US07/873,951 priority patent/US5268745A/en
Priority to JP4106879A priority patent/JPH06167448A/en
Publication of GB2255178A publication Critical patent/GB2255178A/en
Withdrawn legal-status Critical Current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
    • 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
    • G01J3/433—Modulation spectrometry; Derivative spectrometry
    • 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
    • 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
    • G01J3/433—Modulation spectrometry; Derivative spectrometry
    • G01J2003/4332—Modulation spectrometry; Derivative spectrometry frequency-modulated
    • 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

  • 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9114910A 1991-04-26 1991-07-10 Optical gas detector Withdrawn GB2255178A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19920303301 EP0510856A3 (en) 1991-04-26 1992-04-14 Improvements in or relating to optical gas detectors
CA002066816A CA2066816A1 (en) 1991-04-26 1992-04-22 Optical gas detectors
US07/873,951 US5268745A (en) 1991-04-26 1992-04-24 Light radiation absorption gas detector
JP4106879A JPH06167448A (en) 1991-04-26 1992-04-24 Optical gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919108978A GB9108978D0 (en) 1991-04-26 1991-04-26 Improvements in or relating to optical gas detectors

Publications (2)

Publication Number Publication Date
GB9114910D0 true GB9114910D0 (en) 1991-08-28
GB2255178A GB2255178A (en) 1992-10-28

Family

ID=10693973

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919108978A Pending GB9108978D0 (en) 1991-04-26 1991-04-26 Improvements in or relating to optical gas detectors
GB9114910A Withdrawn GB2255178A (en) 1991-04-26 1991-07-10 Optical gas detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919108978A Pending GB9108978D0 (en) 1991-04-26 1991-04-26 Improvements in or relating to optical gas detectors

Country Status (1)

Country Link
GB (2) GB9108978D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201006530D0 (en) * 2010-04-19 2010-06-02 Sec Dep For Business Innovatio Method of and system for calibrating gas flow dilutors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH610401A5 (en) * 1976-09-14 1979-04-12 Balzers Hochvakuum
NO156306C (en) * 1984-07-19 1987-09-02 Elektrisk Bureau As INFRAR FIBER OPTICAL GAS DETECTOR.

Also Published As

Publication number Publication date
GB2255178A (en) 1992-10-28
GB9108978D0 (en) 1991-06-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)