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 gasesInfo
- 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
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.
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)
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)
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)
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 |
-
1947
- 1947-10-13 GB GB27446/47A patent/GB642156A/en not_active Expired
-
1949
- 1949-04-02 US US85164A patent/US2603965A/en not_active Expired - Lifetime
Cited By (2)
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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