FR2389889A1 - - Google Patents
Info
- Publication number
- FR2389889A1 FR2389889A1 FR7713713A FR7713713A FR2389889A1 FR 2389889 A1 FR2389889 A1 FR 2389889A1 FR 7713713 A FR7713713 A FR 7713713A FR 7713713 A FR7713713 A FR 7713713A FR 2389889 A1 FR2389889 A1 FR 2389889A1
- Authority
- FR
- France
- Prior art keywords
- pipe
- pollution
- fluid
- protecting
- ensures
- 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.)
- Granted
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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
Landscapes
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
L'invention concerne la protection d'une surface contre une pollution. On crée sur cette surface une lame d'un fluide de protection. La circulation de l'eau dans le circuit dérivé constitué par la canalisation 12 et la chambre 4 assure un balayage continu de la surface de la fenêtre 2 qui est tournée du côté de l'écoulement dans le conduit 1. L'invention s'applique notamment à la protection de la surface active d'un capteur servant à déterminer le degré de pollution d'un fluide.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7713713A FR2389889B1 (fr) | 1977-05-05 | 1977-05-05 | |
DE2726897A DE2726897C3 (de) | 1977-05-05 | 1977-06-15 | Vorrichtung zum optischen Überwachen eines durch eine Leitung strömenden Fluids |
US05/901,090 US4172428A (en) | 1977-05-05 | 1978-04-28 | Scavengeable fluid for a flow pipe optical window |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7713713A FR2389889B1 (fr) | 1977-05-05 | 1977-05-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2389889A1 true FR2389889A1 (fr) | 1978-12-01 |
FR2389889B1 FR2389889B1 (fr) | 1981-06-12 |
Family
ID=9190397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7713713A Expired FR2389889B1 (fr) | 1977-05-05 | 1977-05-05 |
Country Status (3)
Country | Link |
---|---|
US (1) | US4172428A (fr) |
DE (1) | DE2726897C3 (fr) |
FR (1) | FR2389889B1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2567645A1 (fr) * | 1984-07-12 | 1986-01-17 | Ajinomoto Kk | Procede et appareil de mesure de la turbidite d'un milieu liquide |
DE3628072A1 (de) * | 1986-08-19 | 1987-04-09 | Fruengel Frank Dr Ing | Aerosol- und feinstaubmessgeraet nach dem streulichtprinzip |
EP1069425A1 (fr) * | 1999-07-12 | 2001-01-17 | Entreprise Generale De Chauffage Industriel Pillard | Procédé et dispositif de détection et de mesure optique de la quantité de particules opaques présentes dans un gaz |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1188143A (fr) * | 1983-03-03 | 1985-06-04 | Paul C. Bains | Dispositif d'observation d'un objet dans la voie d'un liquide a ecoulement rapide |
US4703904A (en) * | 1984-06-21 | 1987-11-03 | The Boeing Company | Apparatus and method for providing an aero-optical interface |
US5014932A (en) * | 1990-04-27 | 1991-05-14 | The United States Of America As Represented By The Secretary Of The Navy | Window cooling for high speed flight |
FI93582C (fi) * | 1991-09-18 | 1995-04-25 | Janesko Oy | Sovitelma prosessissa olevan optisen ikkunan puhdistamiseksi |
RU2104555C1 (ru) | 1996-04-30 | 1998-02-10 | Александр Михайлович Деревягин | Измеритель скорости потока |
US6512156B1 (en) | 1996-10-22 | 2003-01-28 | The Dow Chemical Company | Method and apparatus for controlling severity of cracking operations by near infrared analysis in the gas phase using fiber optics |
JP2005533718A (ja) * | 2002-07-26 | 2005-11-10 | ティッチー,ジェイムズ,ビー | 視程障害流体用の視界増強装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2111298A (en) * | 1936-09-08 | 1938-03-15 | Lloyd E Quandt | Liquid flow gauge |
US3453049A (en) * | 1965-10-21 | 1969-07-01 | Robert H Wager Co Inc | Lens cleaning system |
US3861198A (en) * | 1972-11-03 | 1975-01-21 | Gam Rad | Fluid analyzer with self-cleaning viewing windows |
US3861802A (en) * | 1973-07-02 | 1975-01-21 | Continental Oil Co | An improved turbidimeter lens for reducing the tendency of mixtures of immiscible fluids to form films of the lenses |
US4018513A (en) * | 1974-03-28 | 1977-04-19 | Jan Boeke | Optical window used in device for monitoring clarity of a fluid |
-
1977
- 1977-05-05 FR FR7713713A patent/FR2389889B1/fr not_active Expired
- 1977-06-15 DE DE2726897A patent/DE2726897C3/de not_active Expired
-
1978
- 1978-04-28 US US05/901,090 patent/US4172428A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2567645A1 (fr) * | 1984-07-12 | 1986-01-17 | Ajinomoto Kk | Procede et appareil de mesure de la turbidite d'un milieu liquide |
DE3628072A1 (de) * | 1986-08-19 | 1987-04-09 | Fruengel Frank Dr Ing | Aerosol- und feinstaubmessgeraet nach dem streulichtprinzip |
EP1069425A1 (fr) * | 1999-07-12 | 2001-01-17 | Entreprise Generale De Chauffage Industriel Pillard | Procédé et dispositif de détection et de mesure optique de la quantité de particules opaques présentes dans un gaz |
FR2796461A1 (fr) * | 1999-07-12 | 2001-01-19 | Pillard Chauffage | Procede et dispositif de detection et de mesure optique de la quantite de particules opaques presentes dans un gaz |
Also Published As
Publication number | Publication date |
---|---|
DE2726897A1 (de) | 1978-11-16 |
DE2726897C3 (de) | 1980-06-26 |
US4172428A (en) | 1979-10-30 |
DE2726897B2 (de) | 1979-10-11 |
FR2389889B1 (fr) | 1981-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |