GB634453A - Improvements in gas detection and analysis - Google Patents

Improvements in gas detection and analysis

Info

Publication number
GB634453A
GB634453A GB2606047A GB2606047A GB634453A GB 634453 A GB634453 A GB 634453A GB 2606047 A GB2606047 A GB 2606047A GB 2606047 A GB2606047 A GB 2606047A GB 634453 A GB634453 A GB 634453A
Authority
GB
United Kingdom
Prior art keywords
chambers
gas
pressure
capillary
infra
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
Application number
GB2606047A
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.)
WILLIAM BARROW BARTLEY
Original Assignee
WILLIAM BARROW BARTLEY
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 WILLIAM BARROW BARTLEY filed Critical WILLIAM BARROW BARTLEY
Priority to GB2606047A priority Critical patent/GB634453A/en
Publication of GB634453A publication Critical patent/GB634453A/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
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection

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)
  • Examining Or Testing Airtightness (AREA)

Abstract

<PICT:0634453/III/1> In known gas analysing apparatus infra-red rays from a radiating source 2 are chopped by a wheel 18, and passed through chambers 3, 4 one containing the gas to be analysed and the other a neutral or standard gas, to detecting chambers 5, 6 filled with the gas for which the contents of chamber 3 are being examined. If any of the same gas as is contained in chambers 5, 6 is present in chamber 3, part of the energy of a particular band of infra-red rays is absorbed so that uneven comparison of the gas in chambers 5, 6 results. The resulting pressure difference deforms a plate 13 forming one of the electrodes of a condenser or operating a moving coil or piezo crystal. To reduce or indicate the effect of leaks in chambers 5 and 6 the contents of which are well below atmospheric pressure, the chambers are according to the present invention joined by a capillary leak in a diaphragm 13, and through a further capillary tube to a pressure-gauge 17. Chambers 5 and 6 may be joined through a capillary leak to a reservoir of gas at the pressure of the detection chambers, or as shown, the whole apparatus may be surrounded by a reservoir 19. The Provisional Specification states that the capillary tubes may be rolled flat or drawn out.
GB2606047A 1947-09-25 1947-09-25 Improvements in gas detection and analysis Expired GB634453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2606047A GB634453A (en) 1947-09-25 1947-09-25 Improvements in gas detection and analysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2606047A GB634453A (en) 1947-09-25 1947-09-25 Improvements in gas detection and analysis

Publications (1)

Publication Number Publication Date
GB634453A true GB634453A (en) 1950-03-22

Family

ID=10237728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2606047A Expired GB634453A (en) 1947-09-25 1947-09-25 Improvements in gas detection and analysis

Country Status (1)

Country Link
GB (1) GB634453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844729A (en) * 1953-06-19 1958-07-22 Hartmann & Braun Ag Device for the quantitative determination of gaseous infrared-absorbing material
DE976713C (en) * 1953-06-19 1964-03-19 Hartmann & Braun Ag Receiving device for a device for the analysis of mixtures of substances by means of infrared rays
EP0198995A2 (en) * 1985-04-26 1986-10-29 Hartmann &amp; Braun Aktiengesellschaft Infrared gas analyser

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844729A (en) * 1953-06-19 1958-07-22 Hartmann & Braun Ag Device for the quantitative determination of gaseous infrared-absorbing material
DE976713C (en) * 1953-06-19 1964-03-19 Hartmann & Braun Ag Receiving device for a device for the analysis of mixtures of substances by means of infrared rays
EP0198995A2 (en) * 1985-04-26 1986-10-29 Hartmann &amp; Braun Aktiengesellschaft Infrared gas analyser
EP0199365A2 (en) * 1985-04-26 1986-10-29 Hartmann &amp; Braun Aktiengesellschaft Infrared gas analyser
EP0198995A3 (en) * 1985-04-26 1987-12-16 Hartmann &amp; Braun Aktiengesellschaft Infrared gas analyser
EP0199365A3 (en) * 1985-04-26 1987-12-23 Hartmann &amp; Braun Aktiengesellschaft Infrared gas analyser

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