FR2204300A5 - - Google Patents

Info

Publication number
FR2204300A5
FR2204300A5 FR7337452A FR7337452A FR2204300A5 FR 2204300 A5 FR2204300 A5 FR 2204300A5 FR 7337452 A FR7337452 A FR 7337452A FR 7337452 A FR7337452 A FR 7337452A FR 2204300 A5 FR2204300 A5 FR 2204300A5
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
FR7337452A
Other languages
French (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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Application granted granted Critical
Publication of FR2204300A5 publication Critical patent/FR2204300A5/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

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)
  • Optical Measuring Cells (AREA)
FR7337452A 1972-10-20 1973-10-19 Expired FR2204300A5 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00299534A US3809913A (en) 1972-10-20 1972-10-20 Detector for particulate matter in flowing gas streams

Publications (1)

Publication Number Publication Date
FR2204300A5 true FR2204300A5 (da) 1974-05-17

Family

ID=23155228

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7337452A Expired FR2204300A5 (da) 1972-10-20 1973-10-19

Country Status (4)

Country Link
US (1) US3809913A (da)
JP (1) JPS4995679A (da)
DE (1) DE2351922A1 (da)
FR (1) FR2204300A5 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361476A1 (fr) * 1976-08-12 1978-03-10 Ipsen Ind Int Gmbh Procede et dispositif de reglage de la cementation de pieces dans un four sous vide

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954342A (en) * 1974-03-28 1976-05-04 Jan Boeke Optical device for monitoring clarity of a fluid
FR2272387B1 (da) * 1974-05-20 1976-10-15 Rech Ind Liants Hy Centre Et
US3976891A (en) * 1975-02-18 1976-08-24 Electra-Tronics, Inc. Photoelectric detector for smoke or the like
US4101785A (en) * 1977-05-19 1978-07-18 Chloride, Incorporated Smoke detector with switch means for increasing the sensitivity
US4297578A (en) * 1980-01-09 1981-10-27 Carter William R Airborne dust monitor
US4381153A (en) * 1980-08-28 1983-04-26 The Babcock & Wilcox Company Opacity monitor
SE447680B (sv) * 1984-11-01 1986-12-01 Bygg Vesta Ab Anordning vid en optisk varvtalsgivare
US4893935A (en) * 1988-08-19 1990-01-16 Mandel William R Apparatus and method for optical density measurements of biomass processes
US5195356A (en) * 1991-07-11 1993-03-23 Houston Industries Incorporated Test assembly for flue gas monitors
SE508805C2 (sv) * 1991-12-04 1998-11-09 Opsis Ab Optisk analysutrustning för gasformiga ämnen som strömmar i en kanal
GB9315779D0 (en) * 1993-07-30 1993-09-15 Stoneplan Limited Apparatus and methods
US6064056A (en) * 1998-04-15 2000-05-16 Magnetic Separation System, Inc. Air curtain former for creating an air curtain to compensate for impurity buildup
US6285290B1 (en) * 2000-06-14 2001-09-04 Spx Corporation Self-cleaning oven having smoke detector for controlling cleaning cycle time
US7170608B2 (en) * 2003-01-02 2007-01-30 Scott Russell Burge Simplified analytical apparatus for field deployable measurements of molecular absorbance and florescence
GB0519323D0 (en) * 2005-09-22 2005-11-02 Bann John R Scattering centre detector assembly and method
JP5671530B2 (ja) 2009-07-07 2015-02-18 エックストラリス・テクノロジーズ・リミテッド チャンバコンディション
CN105181545A (zh) * 2015-09-24 2015-12-23 青岛中特环保仪器有限公司 一种基于单摆原理的微重测量方法
EP3258241B1 (en) 2017-09-14 2019-12-25 Sensirion AG Particulate matter sensor device
CN110018092B (zh) * 2018-01-09 2022-02-22 宝山钢铁股份有限公司 一种燃气锅炉烟气颗粒物检测装置
WO2021061812A1 (en) * 2019-09-23 2021-04-01 Nirrin Technologies, Inc. In-situ optical probe for monitoring a reactor
US11580836B2 (en) * 2020-07-30 2023-02-14 Carrier Corporation Smoke detector with integrated sensing

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785392A (en) * 1927-03-28 1930-12-16 Sawford Frank Device for indicating and recording the quality of smoke
US2324304A (en) * 1939-08-24 1943-07-13 Katzman Jacob Turbidity meter
US2394129A (en) * 1941-06-06 1946-02-05 Smith Paper Mills Ltd Howard Photoelectric consistency indicating method
US2427013A (en) * 1944-08-29 1947-09-09 Macadams Jesse Edward Densitometer for measuring the light transmission of a fluid while submerged therein
US2510977A (en) * 1946-05-25 1950-06-13 Specialties Dev Corp Detection of suspended matter in gases
US2791932A (en) * 1953-07-30 1957-05-14 Specialties Dev Corp Light responsive apparatus for detecting suspended matter in a fluid
US2854585A (en) * 1953-10-08 1958-09-30 Phillips Petroleum Co Composition analyzer utilizing radiation
US3417250A (en) * 1965-04-22 1968-12-17 Stewart Warner Corp Oil mist particle density detection method and apparatus utilizing a stable oil coating and a unijunction oscillator circuit
GB1135146A (en) * 1967-07-11 1968-11-27 Central Electr Generat Board Optical devices for examination of smoke or dust laden gas
US3628028A (en) * 1968-03-01 1971-12-14 Honeywell Inc Window cleaning apparatus for photometric instruments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361476A1 (fr) * 1976-08-12 1978-03-10 Ipsen Ind Int Gmbh Procede et dispositif de reglage de la cementation de pieces dans un four sous vide

Also Published As

Publication number Publication date
US3809913A (en) 1974-05-07
DE2351922A1 (de) 1974-04-25
JPS4995679A (da) 1974-09-11

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Legal Events

Date Code Title Description
ST Notification of lapse