GB1236825A - Instruments for measuring the magnetic susceptibility of a mixture of gases, particularly of a mixture the oxygen content of which varies rapidly - Google Patents
Instruments for measuring the magnetic susceptibility of a mixture of gases, particularly of a mixture the oxygen content of which varies rapidlyInfo
- Publication number
- GB1236825A GB1236825A GB40453/68A GB4045368A GB1236825A GB 1236825 A GB1236825 A GB 1236825A GB 40453/68 A GB40453/68 A GB 40453/68A GB 4045368 A GB4045368 A GB 4045368A GB 1236825 A GB1236825 A GB 1236825A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- mixture
- oxygen content
- tube
- valves
- 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
- 239000007789 gas Substances 0.000 title abstract 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 3
- 239000000203 mixture Substances 0.000 title abstract 3
- 239000001301 oxygen Substances 0.000 title abstract 3
- 229910052760 oxygen Inorganic materials 0.000 title abstract 3
- 238000004804 winding Methods 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000012159 carrier gas Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0026—General constructional details of gas analysers, e.g. portable test equipment using an alternating circulation of another gas
-
- 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)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
1,236,825. 825. Measuring oxygen content electrically. HARTMANN & BRAUN MESS UND REGELTECHNIKA.G. Aug. 23, 1968 [Aug. 31, 1967], No. 40453/68. Heading G1N. Apparatus for determining the oxygen content, in a mixture of gases comprises a gap 4 in amagnet 1 on which is an energizing winding 2 supplied with a pulsating direct current from a diode 3 and an A.C. supply, which gap is filled with samples of a test gas flow, 7, and a reference gas flow, 8, through valves 9, 10 respectively and is exhausted through a discharge tube 13 so that mixing occurs only in the uniform field regions, none occurring at the junctions between the gap and the feed tubes, 11, 12, at which are created non-uniform field regions the resultant differential pressure, registered by capacitor microphone, 21, providing a measure of the relative magnetic susceptibilities. The differential pressure variations are coupled to a detector, 24, synchronized from an auxiliary winding 25 and displayed on a chart recorder, 26. For gas pressure less than atmospheric a suction pump, 17, exhausts the chamber through valves 14, 16 and buffer stage, 15, pressure being indicated by U-tube 18. To reduce errors arising from magnetostriction and/or core vibrations an analysis chamber is of rigid mechanical structure comprising two soft-iron sheets (34, 35) Fig.2 (not shown) fitted tightly between the parallel poles of the magnet and is sealed by abrass frame (36) compressed between them the core 1 being constructed of high permeability laminations. Vibration effects may be further reduced by mounting the analyser chamber separately from the magnet. In another embodiment, Fig. 5, where no reference gas is available, a reference gas is provided from the carrier gas in a feed tube, 45, heated by an element 47 and supplied with the test gas, the measurement being carried out as described above. The instrument may be further simplified provided the heated gas may be cooled to its original temperature before passing through the heterogeneous zone 44 by supplying test gas through the valve 54 only, discharging it through the valve 55 and dispensing with items 56, 57 and the tube between valves 54 and 55.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671648924 DE1648924C3 (en) | 1967-08-31 | 1967-08-31 | Device for analyzing gases for components with paramagnetic susceptibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236825A true GB1236825A (en) | 1971-06-23 |
Family
ID=5684762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40453/68A Expired GB1236825A (en) | 1967-08-31 | 1968-08-23 | Instruments for measuring the magnetic susceptibility of a mixture of gases, particularly of a mixture the oxygen content of which varies rapidly |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3584499A (en) |
| DE (1) | DE1648924B2 (en) |
| GB (1) | GB1236825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158949A (en) * | 1984-05-16 | 1985-11-20 | Instrumentarium Corp | Quick response paramagnetic analyzer for measurement of the oxygen content of gases |
| EP0177629A1 (en) * | 1983-04-14 | 1986-04-16 | Leybold Aktiengesellschaft | Method and apparatus for measuring the difference in concentration of paramagnetic components in gases |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2017423B2 (en) * | 1970-04-11 | 1977-12-08 | Hartmann & Braun Ag, 6000 Frankfurt | GAS ANALYZER BASED ON THE MAGNETIC PROPERTIES OF A GAS |
| US4292289A (en) * | 1979-01-04 | 1981-09-29 | Climax Chemical Company | Process for producing hydrogen fluoride and phosphoric acid |
| US4683426A (en) * | 1983-04-14 | 1987-07-28 | Leybold-Heraeus Gmbh | Process and apparatus for measuring differences in the concentrations of paramagnetic components of gases |
| US4563894A (en) * | 1984-08-21 | 1986-01-14 | Hewlett-Packard Company | Paramagnetic oxygen sensor |
| DK158858C (en) * | 1986-05-27 | 1990-12-24 | Brueel & Kjaer As | DEVICE FOR DETERMINING THE CONCENTRATION OF A PARAMAGNETIC GAS WHEN MEASURING GAS PRESSURE WHEN PRESSING AN AC MAGNET FIELD |
| DE3642912A1 (en) * | 1986-12-16 | 1988-06-30 | Leybold Ag | MEASURING DEVICE FOR PARAMAGNETIC MEASURING DEVICES WITH A MEASURING CHAMBER |
| FI931009A (en) * | 1993-03-08 | 1994-09-09 | Increa Oy | Prior to saturation of gas mixtures intended measuring device |
| US6202468B1 (en) * | 1998-01-14 | 2001-03-20 | Life Measurement Instruments | Apparatus and method for the determination of the relative proportions of gases |
| AU2003215788A1 (en) * | 2002-03-22 | 2003-10-08 | Instrumentarium Corporation | Paramagnetic oxygen sensing apparatus and method |
| DE10251130B4 (en) * | 2002-11-02 | 2005-04-21 | Dräger Medical AG & Co. KGaA | Sample gas cuvette for a device for measuring the concentration of a paramagnetic gas |
| EP1840563B1 (en) * | 2006-03-29 | 2012-07-25 | General Electric Company | Measuring gas components together with a paramagnetic gas |
| DE102010014883A1 (en) * | 2010-04-14 | 2011-10-20 | Dräger Medical GmbH | Device for measuring the physical properties of gases |
| EP2515105B1 (en) * | 2011-04-21 | 2019-01-02 | General Electric Company | Gas sensor for measurement of paramagnetic gas component |
| CN102252914B (en) * | 2011-05-09 | 2013-04-24 | 兰州大学 | Magnetomechanical coupling air pressure-loading system in low temperature environment |
| CN109283091A (en) * | 2017-07-21 | 2019-01-29 | 深圳大学 | Measured oxygen concentration method and system |
| DE102021111431A1 (en) | 2020-06-29 | 2021-12-30 | Dräger Safety AG & Co. KGaA | Surveillance system |
| DE102021126106A1 (en) | 2021-10-08 | 2023-04-13 | Drägerwerk AG & Co. KGaA | Measuring system for determining gas concentrations |
-
1967
- 1967-08-31 DE DE1648924A patent/DE1648924B2/en active Granted
-
1968
- 1968-08-23 GB GB40453/68A patent/GB1236825A/en not_active Expired
- 1968-08-30 US US756655A patent/US3584499A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0177629A1 (en) * | 1983-04-14 | 1986-04-16 | Leybold Aktiengesellschaft | Method and apparatus for measuring the difference in concentration of paramagnetic components in gases |
| GB2158949A (en) * | 1984-05-16 | 1985-11-20 | Instrumentarium Corp | Quick response paramagnetic analyzer for measurement of the oxygen content of gases |
| US4633705A (en) * | 1984-05-16 | 1987-01-06 | Instrumentarium Corp. | Quick response paramagnetic analyzer for measurement of oxygen contents of gases |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1648924A1 (en) | 1971-07-29 |
| US3584499A (en) | 1971-06-15 |
| DE1648924B2 (en) | 1975-05-15 |
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