GB349204A - Improvements in and relating to methods of and apparatus for testing gas - Google Patents

Improvements in and relating to methods of and apparatus for testing gas

Info

Publication number
GB349204A
GB349204A GB9250/30A GB925030A GB349204A GB 349204 A GB349204 A GB 349204A GB 9250/30 A GB9250/30 A GB 9250/30A GB 925030 A GB925030 A GB 925030A GB 349204 A GB349204 A GB 349204A
Authority
GB
United Kingdom
Prior art keywords
high frequency
supplied
gas
condensers
filament
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
GB9250/30A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB349204A publication Critical patent/GB349204A/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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/68—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using electric discharge to ionise a gas
    • G01N27/70—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using electric discharge to ionise a gas and measuring current or voltage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth 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)

Abstract

<PICT:0349204/III/1> The quality of a gas which is being supplied for a manufacturing operation is determined by drawing it through a vessel which is included in a high frequency electric circuit the current in which is varied by the presence of impurities in the gas and is read on a meter which may be a recording instrument. As shown, for example in testing argon supplied to electric lamps, the gas supply is drawn through tubes 33, 34 in a container 29 which has an enveloping electrode 28 connected in the high voltage secondary circuit 17 of an oscillation generator. The anodes of vacuum tubes 18, 19 are connected in parallel to coils 14, 15 tuned by condensers 22, 23, the filament and plate supplies being obtained from power transformer secondaries 13, 12. A common grid circuit includes a leak 25, coupling coil 16, and condenser 32 which is provided for maintaining the same measuring range with different vacuum tubes. The measuring instrument 27 is connected with the centre tappings of coils 12, 13 and earth in order to keep high potentials away from its terminals. Condensers 20, 21 are provided for preventing high frequency oscillations reaching the power transformer. In a modification, the electrode 28 is earthed and high frequency currents are supplied to a filament within the container 29. Specification 310,339, [Class 37, Electricity, Measuring &c.], is referred to.
GB9250/30A 1929-03-23 1930-03-22 Improvements in and relating to methods of and apparatus for testing gas Expired GB349204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US349204XA 1929-03-23 1929-03-23

Publications (1)

Publication Number Publication Date
GB349204A true GB349204A (en) 1931-05-28

Family

ID=21879470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9250/30A Expired GB349204A (en) 1929-03-23 1930-03-22 Improvements in and relating to methods of and apparatus for testing gas

Country Status (1)

Country Link
GB (1) GB349204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560994A1 (en) * 1984-03-12 1985-09-13 Lacaze Pierre Non-corrodable three-electrode sensor, with external electrodes, for gas- or liquid-phase analysis by ionisation produced by a variable electric, magnetic or electromagnetic field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560994A1 (en) * 1984-03-12 1985-09-13 Lacaze Pierre Non-corrodable three-electrode sensor, with external electrodes, for gas- or liquid-phase analysis by ionisation produced by a variable electric, magnetic or electromagnetic field

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