DE3889538D1 - Gegenfluss-leckprüfer mit arbeitsweise für hohe und geringe empfindlichkeit. - Google Patents
Gegenfluss-leckprüfer mit arbeitsweise für hohe und geringe empfindlichkeit.Info
- Publication number
- DE3889538D1 DE3889538D1 DE3889538T DE3889538T DE3889538D1 DE 3889538 D1 DE3889538 D1 DE 3889538D1 DE 3889538 T DE3889538 T DE 3889538T DE 3889538 T DE3889538 T DE 3889538T DE 3889538 D1 DE3889538 D1 DE 3889538D1
- Authority
- DE
- Germany
- Prior art keywords
- low sensitivity
- leak detector
- detector working
- counterflow leak
- counterflow
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F9/00—Diffusion pumps
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/131,412 US4845360A (en) | 1987-12-10 | 1987-12-10 | Counterflow leak detector with high and low sensitivity operating modes |
PCT/US1988/004276 WO1989005514A1 (en) | 1987-12-10 | 1988-12-01 | Counterflow leak detector with high and low sensitivity operating modes |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3889538D1 true DE3889538D1 (de) | 1994-06-16 |
DE3889538T2 DE3889538T2 (de) | 1994-08-25 |
Family
ID=22449357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3889538T Expired - Fee Related DE3889538T2 (de) | 1987-12-10 | 1988-12-01 | Gegenfluss-leckprüfer mit arbeitsweise für hohe und geringe empfindlichkeit. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4845360A (de) |
EP (1) | EP0347452B1 (de) |
JP (1) | JP2676062B2 (de) |
CA (1) | CA1310765C (de) |
DE (1) | DE3889538T2 (de) |
IL (1) | IL88597A (de) |
WO (1) | WO1989005514A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4991426A (en) * | 1989-08-22 | 1991-02-12 | Oakland Engineering, Inc. | Calibration of air leak detection apparatus |
US5239858A (en) * | 1992-02-20 | 1993-08-31 | Environmental Systems Products, Inc. | Method and apparatus for the automated testing of vehicle fuel evaporation control systems |
US5261793A (en) * | 1992-08-05 | 1993-11-16 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Miniature mechanical vacuum pump |
US5625141A (en) * | 1993-06-29 | 1997-04-29 | Varian Associates, Inc. | Sealed parts leak testing method and apparatus for helium spectrometer leak detection |
GB9504260D0 (en) * | 1995-03-03 | 1995-04-19 | Boc Group Plc | Improvements in diffusion pumps |
JPH1082400A (ja) | 1996-07-31 | 1998-03-31 | Varian Assoc Inc | 蒸気ジェット真空ポンプおよびその製造方法 |
DE10156205A1 (de) * | 2001-11-15 | 2003-06-05 | Inficon Gmbh | Testgaslecksuchgerät |
US6767192B2 (en) * | 2002-11-07 | 2004-07-27 | Varian, Inc. | Vapor jet pump with ejector stage in foreline |
US7168297B2 (en) * | 2003-10-28 | 2007-01-30 | Environmental Systems Products Holdings Inc. | System and method for testing fuel tank integrity |
US8172548B2 (en) * | 2004-10-29 | 2012-05-08 | Bayer Technology Service Gmbh | Driving agent vacuum pump |
KR100745372B1 (ko) * | 2006-02-06 | 2007-08-02 | 삼성전자주식회사 | 반도체 제조설비의 개스플로우량 감시장치 및 그 방법 |
US7459677B2 (en) * | 2006-02-15 | 2008-12-02 | Varian, Inc. | Mass spectrometer for trace gas leak detection with suppression of undesired ions |
US7427751B2 (en) | 2006-02-15 | 2008-09-23 | Varian, Inc. | High sensitivity slitless ion source mass spectrometer for trace gas leak detection |
US20080048108A1 (en) * | 2006-08-25 | 2008-02-28 | Barkus David A | Baffle apparatus and systems and methods using them |
US7500381B2 (en) * | 2006-08-31 | 2009-03-10 | Varian, Inc. | Systems and methods for trace gas leak detection of large leaks at relatively high test pressures |
DE102010048982B4 (de) | 2010-09-03 | 2022-06-09 | Inficon Gmbh | Lecksuchgerät |
CN102928170A (zh) * | 2011-08-08 | 2013-02-13 | 北京卫星环境工程研究所 | 氦质谱检漏仪的校准方法 |
US10094381B2 (en) | 2015-06-05 | 2018-10-09 | Agilent Technologies, Inc. | Vacuum pump system with light gas pumping and leak detection apparatus comprising the same |
DE102021134647A1 (de) | 2021-12-23 | 2023-06-29 | Inficon Gmbh | Vakuumlecksucher mit Ansprüh-Membran-Testleck und Verfahren |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1047204A (de) * | 1964-05-26 | 1900-01-01 | ||
DE1648648C3 (de) * | 1967-04-12 | 1980-01-24 | Arthur Pfeiffer-Hochvakuumtechnik Gmbh, 6330 Wetzlar | Anordnung zur Lecksuche nach dem Massenspektrometer-Prinzip |
US3690151A (en) * | 1968-07-25 | 1972-09-12 | Norton Co | Leak detector |
US3626760A (en) * | 1969-07-16 | 1971-12-14 | Varian Associates | Leak detection cyclic pumping control |
GB1546362A (en) * | 1975-07-25 | 1979-05-23 | Hewlett Packard Co | Vapour diffusion pump |
US4373868A (en) * | 1976-07-06 | 1983-02-15 | Varian Associates, Inc. | Diffusion pump for leak detector |
US4472962A (en) * | 1981-08-03 | 1984-09-25 | Balzers Aktiengesellschaft | Low pressure leak detector |
US4499752A (en) * | 1983-06-22 | 1985-02-19 | Varian Associates, Inc. | Counterflow leak detector with cold trap |
-
1987
- 1987-12-10 US US07/131,412 patent/US4845360A/en not_active Expired - Lifetime
-
1988
- 1988-12-01 JP JP1501323A patent/JP2676062B2/ja not_active Expired - Fee Related
- 1988-12-01 DE DE3889538T patent/DE3889538T2/de not_active Expired - Fee Related
- 1988-12-01 WO PCT/US1988/004276 patent/WO1989005514A1/en active IP Right Grant
- 1988-12-01 EP EP89901367A patent/EP0347452B1/de not_active Expired - Lifetime
- 1988-12-06 IL IL88597A patent/IL88597A/xx unknown
- 1988-12-09 CA CA000585585A patent/CA1310765C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0347452A1 (de) | 1989-12-27 |
WO1989005514A1 (en) | 1989-06-15 |
IL88597A (en) | 1992-02-16 |
JP2676062B2 (ja) | 1997-11-12 |
EP0347452A4 (en) | 1991-05-08 |
EP0347452B1 (de) | 1994-05-11 |
DE3889538T2 (de) | 1994-08-25 |
US4845360A (en) | 1989-07-04 |
CA1310765C (en) | 1992-11-24 |
JPH02502321A (ja) | 1990-07-26 |
IL88597A0 (en) | 1989-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: VARIAN, INC., PALO ALTO, CALIF., US |
|
8339 | Ceased/non-payment of the annual fee |