GB1479670A - Method of and apparatus for testing material to evaluate gas content thereof - Google Patents

Method of and apparatus for testing material to evaluate gas content thereof

Info

Publication number
GB1479670A
GB1479670A GB45625/74A GB4562574A GB1479670A GB 1479670 A GB1479670 A GB 1479670A GB 45625/74 A GB45625/74 A GB 45625/74A GB 4562574 A GB4562574 A GB 4562574A GB 1479670 A GB1479670 A GB 1479670A
Authority
GB
United Kingdom
Prior art keywords
electrode
circuit
chamber
gas
vacuum
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
GB45625/74A
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers Corp
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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Publication of GB1479670A publication Critical patent/GB1479670A/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
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T7/00—Rotary spark gaps, i.e. devices having one or more rotating electrodes

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manufacture Of Switches (AREA)

Abstract

1479670 D C discharge method for testing contact material ALLIS-CHALMERS CORP 22 Oct 1974 [23 Oct 1973] 45625/74 Heading G1B [Also in Division H1] The gas content of material to be used for electrical contacts in a vacuum circuit interrupter is determined by a method comprising mounting the material at 66A-66G in a vacuum chamber 11, 21, 22, evacuating the gas from the chamber using for example a rough vacuum system via 31, 36 and an ion sublimation pump 37, connecting the material into an electrical D.C. circuit in series with an electrode 101 or 102 which is connected to the positive polarity of the circuit to function as an anode, the material serving as the cathode, separating the electrode and the material as by withdrawing the electrode, to draw an arc between the electrode and the material for a predetermined time, interrupting the circuit to extinguish the arc and determining the pressure and composition of the gas evolved. In the embodiment shown the vacuum chamber is connected to ion gauge 48 for pressure measurement and to mass spectrometer 38 for determination of the composition of the gas evolved. The samples of material are held on electrically conductive standard 65 on turntable 64 which is rotatable via gears 68, 69 and shaft 72 to bring the samples successively into alignment with one or other electrode 101, 102 and retractable from the position shown by means of draw-rod 82 to bring the turntable into sealing engagement with the end plate 22. Before carrying out the tests the apparatus is baked out using heater 62 while the chamber is evacuated.
GB45625/74A 1973-10-23 1974-10-22 Method of and apparatus for testing material to evaluate gas content thereof Expired GB1479670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408928A US3866041A (en) 1973-10-23 1973-10-23 Method and apparatus for evaluating the gas content of materials

Publications (1)

Publication Number Publication Date
GB1479670A true GB1479670A (en) 1977-07-13

Family

ID=23618353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45625/74A Expired GB1479670A (en) 1973-10-23 1974-10-22 Method of and apparatus for testing material to evaluate gas content thereof

Country Status (5)

Country Link
US (1) US3866041A (en)
JP (1) JPS5067973A (en)
CA (1) CA1002598A (en)
DE (1) DE2449081A1 (en)
GB (1) GB1479670A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256967A (en) * 1979-07-25 1981-03-17 Charles F. Kettering Foundation Arc reactor device
JPH0746074B2 (en) * 1984-11-27 1995-05-17 日電アネルバ株式会社 Vacuum gauge
US4879458A (en) * 1985-08-15 1989-11-07 R. J. Brunfeldt Company, Inc. Automatic sample system for mass spectrometer
US4834945A (en) * 1986-06-27 1989-05-30 The United States Of America As Represented By The Secretary Of The Air Force High resolution cinephotographics system pressure vessel
US4808820A (en) * 1987-09-23 1989-02-28 Hewlett-Packard Company Electron-emission filament cutoff for gas chromatography + mass spectrometry systems
CA2020480C (en) * 1989-08-24 1997-11-18 Michael P. Smith Determining collective fluid inclusion volatiles compositions for inclusion composition mapping of earth's subsurface
CA2020635C (en) * 1989-08-24 1996-11-26 Michael P. Smith Obtaining collective fluid inclusion volatiles for inclusion composition mapping of earth's subsurface
US5539204A (en) * 1995-02-10 1996-07-23 Regents Of The University Of California Mass spectrometer vacuum housing and pumping system
US5670378A (en) * 1995-02-23 1997-09-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for trace oxygen detection
KR200190751Y1 (en) 2000-02-26 2000-08-01 이운 Catch ball grip
RU2449270C1 (en) * 2010-12-07 2012-04-27 Учреждение Российской академии наук Ордена Ленина и Ордена Октябрьской Революции Институт геохимии и аналитической химии им. В.И. Вернадского РАН (ГЕОХИ РАН) Preparation plant of sampled gases from fluid inclusions in rocks and minerals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400066A (en) * 1965-11-15 1968-09-03 Ibm Sputtering processes for depositing thin films of controlled thickness
US3591827A (en) * 1967-11-29 1971-07-06 Andar Iti Inc Ion-pumped mass spectrometer leak detector apparatus and method and ion pump therefor
US3751989A (en) * 1971-07-02 1973-08-14 Varian Associates Fixture and system for treating test pieces on a rapid cycle leak detection apparatus

Also Published As

Publication number Publication date
DE2449081A1 (en) 1975-05-07
US3866041A (en) 1975-02-11
JPS5067973A (en) 1975-06-06
CA1002598A (en) 1976-12-28

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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