GB1229004A - - Google Patents

Info

Publication number
GB1229004A
GB1229004A GB5602968A GB1229004DA GB1229004A GB 1229004 A GB1229004 A GB 1229004A GB 5602968 A GB5602968 A GB 5602968A GB 1229004D A GB1229004D A GB 1229004DA GB 1229004 A GB1229004 A GB 1229004A
Authority
GB
United Kingdom
Prior art keywords
light
smoke
enclosure
cell
scattered
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
GB5602968A
Other languages
English (en)
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 filed Critical
Publication of GB1229004A publication Critical patent/GB1229004A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/063—Illuminating optical parts
    • G01N2201/0638—Refractive parts
    • G01N2201/0639—Sphere lens

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)
  • Fire-Detection Mechanisms (AREA)
GB5602968A 1967-07-11 1968-11-26 Expired GB1229004A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US65244767A 1967-07-11 1967-07-11
GB5602968 1968-11-26
DE1814202A DE1814202C3 (de) 1967-07-11 1968-12-12 Gerät zum Nachweis von in einem Gas schwebenden Rauch- oder Staubteilchen

Publications (1)

Publication Number Publication Date
GB1229004A true GB1229004A (fr) 1971-04-21

Family

ID=27181662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5602968A Expired GB1229004A (fr) 1967-07-11 1968-11-26

Country Status (3)

Country Link
US (1) US3497303A (fr)
DE (1) DE1814202C3 (fr)
GB (1) GB1229004A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968379A (en) * 1974-11-29 1976-07-06 Rixson-Firemark, Inc. Photocell smoke detector
FR2357888A1 (fr) * 1976-04-01 1978-02-03 Cerberus Ag Detecteur de fumee
JPS60231140A (ja) * 1984-04-28 1985-11-16 Fuji Electric Co Ltd 光学的ガス濃度計
US4747687A (en) * 1984-06-08 1988-05-31 Milton Roy Company Ball cell windows for spectrophotometers
DE3425710A1 (de) * 1984-07-12 1986-01-16 Bergwerksverband Gmbh, 4300 Essen Vorrichtung zur bestimmung der feinstaubkonzentration
US5037199A (en) * 1989-02-22 1991-08-06 Linear Instruments Corporation Ball lens micro-cell
WO2007130669A2 (fr) * 2006-05-07 2007-11-15 Zu Jianping Lily appareil de dispersion de lumiÈre À lentille ronde optique et son procÉdÉ utilisation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200254A (en) * 1962-03-19 1965-08-10 Gen Electric Photosensitive detector for airborne particles
US3319514A (en) * 1962-06-13 1967-05-16 Jr Decker G Mcallister Submersible turbidity detector unit
US3255441A (en) * 1962-11-30 1966-06-07 Goodwin Smoke, flame, critical temperature and rate of temperature rise detector
US3382762A (en) * 1967-02-21 1968-05-14 Alfred W. Vasel Smoke detecting device

Also Published As

Publication number Publication date
DE1814202B2 (de) 1973-03-08
US3497303A (en) 1970-02-24
DE1814202A1 (de) 1970-08-27
DE1814202C3 (de) 1973-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee