GB1394583A - Method of detecting aerosols in air or gases and apparatus for this purpose - Google Patents

Method of detecting aerosols in air or gases and apparatus for this purpose

Info

Publication number
GB1394583A
GB1394583A GB3084872A GB3084872A GB1394583A GB 1394583 A GB1394583 A GB 1394583A GB 3084872 A GB3084872 A GB 3084872A GB 3084872 A GB3084872 A GB 3084872A GB 1394583 A GB1394583 A GB 1394583A
Authority
GB
United Kingdom
Prior art keywords
light
particles
gases
air
cell
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
GB3084872A
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.)
Svenska Utvecklings AB
Original Assignee
Svenska Utvecklings AB
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 Svenska Utvecklings AB filed Critical Svenska Utvecklings AB
Priority to GB3084872A priority Critical patent/GB1394583A/en
Priority to FR7224359A priority patent/FR2144449A5/fr
Publication of GB1394583A publication Critical patent/GB1394583A/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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1394583 Particle detectors SVENSKAUTVECKLINGS AB 30 June 1972 30848/72 Headings G1A and G1X Apparatus for detecting particles in a gas comprises a light source 21, and condenser 22 which directs a light beam 23 longitudinally of a scattering chamber 24, 24'. Gas containing particles enters at inlet 27 and leaves at outlet 28, the light beam 23 and particles travelling in the same direction over a relatively long distance so as to maximize the scattering effect of the particles. Scattered light passes into a light converger 29, 30 being detected by light sensitive cell 31, unscattered light being directed on to a light trap 25. A cell 33 is used to facilitate zeroing of the apparatus, receiving, when required, light via a particle free internally reflecting tube 34.
GB3084872A 1972-06-30 1972-06-30 Method of detecting aerosols in air or gases and apparatus for this purpose Expired GB1394583A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3084872A GB1394583A (en) 1972-06-30 1972-06-30 Method of detecting aerosols in air or gases and apparatus for this purpose
FR7224359A FR2144449A5 (en) 1972-06-30 1972-07-05

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3084872A GB1394583A (en) 1972-06-30 1972-06-30 Method of detecting aerosols in air or gases and apparatus for this purpose
FR7224359A FR2144449A5 (en) 1972-06-30 1972-07-05

Publications (1)

Publication Number Publication Date
GB1394583A true GB1394583A (en) 1975-05-21

Family

ID=26217204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3084872A Expired GB1394583A (en) 1972-06-30 1972-06-30 Method of detecting aerosols in air or gases and apparatus for this purpose

Country Status (2)

Country Link
FR (1) FR2144449A5 (en)
GB (1) GB1394583A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407429A1 (en) * 1988-03-30 1991-01-16 COLE, Martin Terence Fluid pollution monitor
EP0856827A1 (en) * 1997-02-04 1998-08-05 Pittway Corporation Photodetector with coated reflector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407429A1 (en) * 1988-03-30 1991-01-16 COLE, Martin Terence Fluid pollution monitor
EP0407429A4 (en) * 1988-03-30 1991-08-21 Martin Terence Cole Fluid pollution monitor
EP0856827A1 (en) * 1997-02-04 1998-08-05 Pittway Corporation Photodetector with coated reflector

Also Published As

Publication number Publication date
FR2144449A5 (en) 1973-02-09

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees