FR2255594B1 - - Google Patents

Info

Publication number
FR2255594B1
FR2255594B1 FR7442172A FR7442172A FR2255594B1 FR 2255594 B1 FR2255594 B1 FR 2255594B1 FR 7442172 A FR7442172 A FR 7442172A FR 7442172 A FR7442172 A FR 7442172A FR 2255594 B1 FR2255594 B1 FR 2255594B1
Authority
FR
France
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
FR7442172A
Other versions
FR2255594A1 (fr
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of FR2255594A1 publication Critical patent/FR2255594A1/fr
Application granted granted Critical
Publication of FR2255594B1 publication Critical patent/FR2255594B1/fr
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
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • 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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR7442172A 1973-12-21 1974-12-20 Expired FR2255594B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427108A US3872315A (en) 1973-12-21 1973-12-21 Radiation sensitive fluid analyzer

Publications (2)

Publication Number Publication Date
FR2255594A1 FR2255594A1 (fr) 1975-07-18
FR2255594B1 true FR2255594B1 (fr) 1978-09-29

Family

ID=23693520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442172A Expired FR2255594B1 (fr) 1973-12-21 1974-12-20

Country Status (8)

Country Link
US (1) US3872315A (fr)
JP (1) JPS5847657B2 (fr)
CA (1) CA1017165A (fr)
DE (1) DE2460434A1 (fr)
ES (1) ES433194A1 (fr)
FR (1) FR2255594B1 (fr)
GB (1) GB1485428A (fr)
IT (1) IT1026129B (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH561942A5 (fr) * 1974-03-08 1975-05-15 Cerberus Ag
GB1556029A (en) * 1976-10-29 1979-11-14 Standard Telephones Cables Ltd Oil in water detection
JPS5631625A (en) * 1979-08-24 1981-03-31 Hochiki Corp Smoke detector of photoelectronic type
GB2097529B (en) * 1981-04-28 1984-09-19 Itt Ind Ltd Detecting oil in water
US4560874A (en) * 1981-06-02 1985-12-24 Santa Barbara Research Center Reference channel for sensing optical contamination
EP0132370B1 (fr) * 1983-07-22 1989-03-29 Oki Electric Industry Company, Limited Appareil pour la mesure du facteur de transmission optique
US4647777A (en) * 1985-05-31 1987-03-03 Ametrek, Inc. Selective gas detector
FI75669C (fi) * 1986-02-04 1988-07-11 Vaisala Oy Foerfarande foer maetning av transmission av ljus och apparatur foer tillaempning av foerfarandet.
JPH0765963B2 (ja) * 1986-04-07 1995-07-19 ホーチキ株式会社 減光式煙感知器
US4759631A (en) * 1986-09-29 1988-07-26 Circuits And Systems, Inc. System for transmission loss comparison
US4814628A (en) * 1987-03-20 1989-03-21 Precitronic Gesellschaft Fuer Feinmechanik Und Electronic Mbh Arrangement for the transmission of laser light with reference source for backscatter obstruction detection
GB8711309D0 (en) * 1987-05-13 1987-06-17 Combustion Dev Ltd Monitoring equipment
DE69012837T2 (de) * 1989-07-10 1995-02-23 Gerdt Heinrich Taeby Fladda Messgerät.
EP0533490B1 (fr) * 1991-09-20 1995-05-17 Nec Corporation Système de calibrage d'un instrument optique, à bord d'un satellite avec une source de lumière de référence
SE508805C2 (sv) * 1991-12-04 1998-11-09 Opsis Ab Optisk analysutrustning för gasformiga ämnen som strömmar i en kanal
US6117682A (en) * 1993-04-27 2000-09-12 Dexsil Corporation Method for detecting hydrocarbons in water
JPH06308025A (ja) * 1993-04-27 1994-11-04 Oki Electric Ind Co Ltd 光透過率測定装置の較正方法
DE59510550D1 (de) * 1995-05-31 2003-03-13 Vaisala Impulsphysik Gmbh Sichtweitenmessgerät
AU1602697A (en) * 1996-02-12 1997-08-28 Shell Internationale Research Maatschappij B.V. Self-correcting spectroscopic process analysis
GB2384555B (en) * 2001-01-16 2005-05-04 Teraview Ltd Apparatus and method for investigating a sample
US7564365B2 (en) * 2002-08-23 2009-07-21 Ge Security, Inc. Smoke detector and method of detecting smoke
AU2003268142A1 (en) * 2002-08-23 2004-03-11 General Electric Company Rapidly responding, false detection immune alarm signal producing smoke detector
CN103748441B (zh) 2011-06-07 2016-12-28 精量电子(美国)有限公司 用于流体传感的光学传感装置和光学传感方法
US11176807B2 (en) * 2019-11-22 2021-11-16 Honeywell International Inc. Unmanned system (US) for smoke detector testing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617756A (en) * 1968-03-26 1971-11-02 Erwin Sick Optical measuring apparatus using measuring and comparison light beams
GB1309551A (en) * 1969-05-22 1973-03-14 Nat Res Dev Measurement of optical density
US3659946A (en) * 1969-12-10 1972-05-02 Shimadzu Corp Automated light scattering photometer
US3677652A (en) * 1971-06-15 1972-07-18 Gte Sylvania Inc Fluid analyzer apparatus
GB1387424A (en) * 1971-06-29 1975-03-19 Plessey Co Ltd Measuring instruments

Also Published As

Publication number Publication date
IT1026129B (it) 1978-09-20
JPS5098886A (fr) 1975-08-06
FR2255594A1 (fr) 1975-07-18
GB1485428A (en) 1977-09-14
AU7663274A (en) 1976-06-24
JPS5847657B2 (ja) 1983-10-24
DE2460434A1 (de) 1975-08-14
ES433194A1 (es) 1976-12-01
CA1017165A (en) 1977-09-13
US3872315A (en) 1975-03-18

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Legal Events

Date Code Title Description
ST Notification of lapse