GB642156A - Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases - Google Patents

Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases

Info

Publication number
GB642156A
GB642156A GB27446/47A GB2744647A GB642156A GB 642156 A GB642156 A GB 642156A GB 27446/47 A GB27446/47 A GB 27446/47A GB 2744647 A GB2744647 A GB 2744647A GB 642156 A GB642156 A GB 642156A
Authority
GB
United Kingdom
Prior art keywords
gas
susceptibility
flow
passage
winding
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
GB27446/47A
Inventor
Reginald Stuart Medlock
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.)
Elster Metering Holdings Ltd
Original Assignee
George Kent 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 George Kent Ltd filed Critical George Kent Ltd
Priority to GB27446/47A priority Critical patent/GB642156A/en
Priority to US85164A priority patent/US2603965A/en
Publication of GB642156A publication Critical patent/GB642156A/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
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids

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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

<PICT:0642156/III/1> <PICT:0642156/III/2> A device for determining the amount of a constituent having high magnetic susceptibility in a gas mixture of the kind wherein the gas is locally heated in a magnetic field to induce a flow dependent on the change of susceptibility due to heating, and wherein a response is obtained depending on the flow and on the specific heat of the gas, is provided with correction means to make the response independent of the viscosity and the specific heat. The gas is passed downwardly through the two halves of the annular cell 1A, which are arranged in parallel, and connected by a transverse passage 1A6 carrying a centre-tapped heating winding 1A7 constituting two of the resistances of a Wheatstone bridge. One half (shaded) of this passage is situated in a magnetic field. The attraction into the field of a susceptible gas and its subsequent loss of susceptibility on heating result in a flow through the transverse tube which by differential cooling of the winding 1A7 unbalances the bridge. The gas then passes through the compensating cell 2A, which resembles the first cell but has the transverse tube arranged vertically and has no magnetic field. A convectional current is thus produced in tube 2A6, producing an unbalancing of a second Wheatstone bridge, which is so connected with the first that the net response of the galvanometer G depends only on the magnetic susceptibility. In a modification, Fig. 4, the flow past the compensating winding 2 is produced by passage through a constriction 3 under a constant pressure controlled by regulator 4.
GB27446/47A 1947-10-13 1947-10-13 Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases Expired GB642156A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB27446/47A GB642156A (en) 1947-10-13 1947-10-13 Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases
US85164A US2603965A (en) 1947-10-13 1949-04-02 Paramagnetic gas analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27446/47A GB642156A (en) 1947-10-13 1947-10-13 Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases

Publications (1)

Publication Number Publication Date
GB642156A true GB642156A (en) 1950-08-30

Family

ID=10259717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27446/47A Expired GB642156A (en) 1947-10-13 1947-10-13 Improvements in or relating to apparatus for assessing the amount of a gas of relatively high magnetic susceptibility contained in a mixture of gases

Country Status (2)

Country Link
US (1) US2603965A (en)
GB (1) GB642156A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038311B (en) * 1951-01-04 1958-09-04 Saint Gobain Method and device for measuring paramagnetic gases
FR2312036A1 (en) * 1975-05-23 1976-12-17 Siemens Ag Determination of oxygen percentage in gas - from differential pressure magnetic analysis with gas flow compensation

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729097A (en) * 1951-01-04 1956-01-03 Saint Gobain Apparatus for analyzing gases
US2998009A (en) * 1952-05-23 1961-08-29 Old Dominion Res And Dev Corp Breathing apparatus
US2807159A (en) * 1953-09-15 1957-09-24 Arnold O Beckman Inc Gas analysis cell
US2882719A (en) * 1955-01-06 1959-04-21 Beckman Instruments Inc Apparatus for fluid analysis
US2883857A (en) * 1955-01-31 1959-04-28 Beckman Instruments Inc Apparatus for measuring oxygen content
US2949765A (en) * 1957-05-14 1960-08-23 Beckman Instruments Inc Measuring circuit for fluid analyzers
US3281214A (en) * 1958-12-12 1966-10-25 Standard Oil Co Apparatus for oxidation of organic compounds
US3045474A (en) * 1959-07-01 1962-07-24 Hartmann & Braun Ag Gas analyser
US3184954A (en) * 1961-04-17 1965-05-25 Leeds & Northrup Co Gas analyzing systems
JP3951164B2 (en) * 2000-05-23 2007-08-01 横河電機株式会社 Magnetic oxygen meter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724041C (en) * 1940-09-15 1942-08-17 Versuchsanstalt Fuer Luftfahrt Exhaust gas checker for internal combustion engines
US2501377A (en) * 1945-07-27 1950-03-21 Leeds & Northrup Co Relative humidity measuring system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038311B (en) * 1951-01-04 1958-09-04 Saint Gobain Method and device for measuring paramagnetic gases
FR2312036A1 (en) * 1975-05-23 1976-12-17 Siemens Ag Determination of oxygen percentage in gas - from differential pressure magnetic analysis with gas flow compensation

Also Published As

Publication number Publication date
US2603965A (en) 1952-07-22

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