GB1485428A - Fluid analysers - Google Patents

Fluid analysers

Info

Publication number
GB1485428A
GB1485428A GB54369/74A GB5436974A GB1485428A GB 1485428 A GB1485428 A GB 1485428A GB 54369/74 A GB54369/74 A GB 54369/74A GB 5436974 A GB5436974 A GB 5436974A GB 1485428 A GB1485428 A GB 1485428A
Authority
GB
United Kingdom
Prior art keywords
window
splitter
photo
detector
radiation
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
GB54369/74A
Other languages
English (en)
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 GB1485428A publication Critical patent/GB1485428A/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
    • 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)
GB54369/74A 1973-12-21 1974-12-17 Fluid analysers Expired GB1485428A (en)

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 (1)

Publication Number Publication Date
GB1485428A true GB1485428A (en) 1977-09-14

Family

ID=23693520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54369/74A Expired GB1485428A (en) 1973-12-21 1974-12-17 Fluid analysers

Country Status (8)

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

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH561942A5 (enrdf_load_stackoverflow) * 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 (en) * 1983-07-22 1989-03-29 Oki Electric Industry Company, Limited Apparatus for measuring optical transmission factor
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
EP0534951B1 (en) * 1989-07-10 1994-09-21 FLADDA, Gerdt Heinrich Measuring apparatus
DE69202539T2 (de) * 1991-09-20 1995-11-02 Nippon Electric Co System zum Kalibrieren eines optischen Instruments in einem Satellit mittels einer Referenz-Lichtquelle.
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
EP0745838B1 (de) * 1995-05-31 2003-02-05 Vaisala Impulsphysik GmbH Sichtweitenmessgerät
AU1602697A (en) * 1996-02-12 1997-08-28 Shell Internationale Research Maatschappij B.V. Self-correcting spectroscopic process analysis
GB2396695B (en) * 2001-01-16 2005-05-04 Teraview Ltd Apparatus and method for investigating a sample
EP1552489B1 (en) * 2002-08-23 2008-12-10 General Electric Company Rapidly responding, false detection immune alarm signal producing smoke detector
US7564365B2 (en) * 2002-08-23 2009-07-21 Ge Security, Inc. Smoke detector and method of detecting smoke
WO2012170743A1 (en) 2011-06-07 2012-12-13 Sentelligence, Inc. Optical sensing device for fluid sensing and methods therefor
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
FR2255594B1 (enrdf_load_stackoverflow) 1978-09-29
IT1026129B (it) 1978-09-20
AU7663274A (en) 1976-06-24
DE2460434A1 (de) 1975-08-14
ES433194A1 (es) 1976-12-01
JPS5098886A (enrdf_load_stackoverflow) 1975-08-06
CA1017165A (en) 1977-09-13
JPS5847657B2 (ja) 1983-10-24
FR2255594A1 (enrdf_load_stackoverflow) 1975-07-18
US3872315A (en) 1975-03-18

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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