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GB801227A - Photoelectric measurement of ozone concentrations - Google Patents

Photoelectric measurement of ozone concentrations

Info

Publication number
GB801227A
GB801227A GB3652555A GB3652555A GB801227A GB 801227 A GB801227 A GB 801227A GB 3652555 A GB3652555 A GB 3652555A GB 3652555 A GB3652555 A GB 3652555A GB 801227 A GB801227 A GB 801227A
Authority
GB
United Kingdom
Prior art keywords
ozone
source
galvanometer
concentration
light
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
GB3652555A
Inventor
John Walter Armond
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB3652555A priority Critical patent/GB801227A/en
Publication of GB801227A publication Critical patent/GB801227A/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

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)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

801,227. Measuring ozone concentration photo-electrically. BRITISH OXYGEN CO., Ltd. Dec. 5, 1956 [Dec. 20,1955], No. 36525/55. Class 40 (3). The concentration of ozone when mixed with colourless gas is measured by passing light through it, filtering wavelengths 5400 to 6400Š on to a photovoltaic cell and measuring the difference between its output and that of the cell subjected to light from a source which fluctuates with the other source. Light from a source 11 is passed through the glass tubes 14, 17 (the outside walls of which are silvered) filters 18, 19 and on to the cells 12, 13. These cells are connected in opposition to a galvanometer which has a variable resistance across it so that its sensitivity may be controlled. In operation, the tube 14 is filled with a colourless gas and the galvanometer needle set to zero by operation of the attenuator 20. The ozone is then introduced into the tube 14 and the deflection of the galvanometer is an indication of its concentration.
GB3652555A 1955-12-20 1955-12-20 Photoelectric measurement of ozone concentrations Expired GB801227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3652555A GB801227A (en) 1955-12-20 1955-12-20 Photoelectric measurement of ozone concentrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3652555A GB801227A (en) 1955-12-20 1955-12-20 Photoelectric measurement of ozone concentrations

Publications (1)

Publication Number Publication Date
GB801227A true GB801227A (en) 1958-09-10

Family

ID=10388946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3652555A Expired GB801227A (en) 1955-12-20 1955-12-20 Photoelectric measurement of ozone concentrations

Country Status (1)

Country Link
GB (1) GB801227A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194333A (en) * 1986-07-01 1988-03-02 Electricity Council Detection method and device
DE112009001788T5 (en) 2008-07-21 2011-06-09 Cambridge Display Technology Ltd., Cambourne Composition and method for the production of light-emitting diodes
DE112010001639T5 (en) 2009-04-16 2012-06-21 Cambridge Display Technology Ltd. Organic electroluminescent device and method of manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194333A (en) * 1986-07-01 1988-03-02 Electricity Council Detection method and device
GB2194333B (en) * 1986-07-01 1990-08-29 Electricity Council Detection method and device
DE112009001788T5 (en) 2008-07-21 2011-06-09 Cambridge Display Technology Ltd., Cambourne Composition and method for the production of light-emitting diodes
US9028715B2 (en) 2008-07-21 2015-05-12 Cambridge Display Technology Limited Compositions and methods for manufacturing light-emissive devices
DE112010001639T5 (en) 2009-04-16 2012-06-21 Cambridge Display Technology Ltd. Organic electroluminescent device and method of manufacture

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