GB1220413A - Improvements in and relating to gas analyzers - Google Patents
Improvements in and relating to gas analyzersInfo
- Publication number
- GB1220413A GB1220413A GB3016168A GB3016168A GB1220413A GB 1220413 A GB1220413 A GB 1220413A GB 3016168 A GB3016168 A GB 3016168A GB 3016168 A GB3016168 A GB 3016168A GB 1220413 A GB1220413 A GB 1220413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- bridge
- magnetoresistive elements
- restoring
- force balance
- 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
1,220,413. Paramagnetic gas analyzers: force balance arrangements. SAMOSTOYATELNOE KONSTRUKTORSKO - TEKHNOLOGICHESKOE BJURO "MEDFIZPRIBOR". June 25, 1968, No. 30161/68. Heading G1N. In a paramagnetic gas analyzer of the type in which the torque on a body suspended in a non- uniform magnetic field in a space containing the gas being analyzed is counteracted by an electrical force balance arrangement, the input of the force balance is derived from at least one magnetoresistive element mounted on the body and connected in a bridge circuit. As shown in Fig. 1, two magnetoresistive elements 7 of bismuth or indium antimonide are connected in an A. C. bridge circuit including resistors 9. The bridge output is amplified (11), rectified (12) and fed to a coil 5 to produce a restoring torque on the body 4. The plane of coil 5 is perpendicular to the direction of the magnetic field. In a second arrangement, Fig. 4, that part of the bridge circuit including the magnetoresistive elements 7 also serves as the coil 5<SP>1</SP>, A. C. being used to detect rotation of the body 4 and D.C. for restoring the body to its zero position. In a further arrangement Fig. 5 (not shown) four magnetoresistive elements are used in the four arms of the bridge which also serves as the restoring coil. Alternatively Fig. 7 (not shown) for magnetoresistive elements are connected in pairs in two arms of the bridge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3016168A GB1220413A (en) | 1968-06-25 | 1968-06-25 | Improvements in and relating to gas analyzers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3016168A GB1220413A (en) | 1968-06-25 | 1968-06-25 | Improvements in and relating to gas analyzers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1220413A true GB1220413A (en) | 1971-01-27 |
Family
ID=10303261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3016168A Expired GB1220413A (en) | 1968-06-25 | 1968-06-25 | Improvements in and relating to gas analyzers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1220413A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2169600A5 (en) * | 1972-01-17 | 1973-09-07 | Taylor Servomex Ltd | |
EP0926490A2 (en) * | 1997-12-24 | 1999-06-30 | Servomex Plc | Gas sensor |
EP3045904A3 (en) * | 2014-12-22 | 2016-09-21 | ABB Schweiz AG | Magnetomechanical sensor device for paramagnetic gas analysis with measuring of interference and method for same |
-
1968
- 1968-06-25 GB GB3016168A patent/GB1220413A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2169600A5 (en) * | 1972-01-17 | 1973-09-07 | Taylor Servomex Ltd | |
EP0926490A2 (en) * | 1997-12-24 | 1999-06-30 | Servomex Plc | Gas sensor |
EP0926490A3 (en) * | 1997-12-24 | 2000-01-26 | Servomex Plc | Gas sensor |
US6246227B1 (en) | 1997-12-24 | 2001-06-12 | James Hobby | Sensor for measuring the magnetic characteristics of a gas |
EP3045904A3 (en) * | 2014-12-22 | 2016-09-21 | ABB Schweiz AG | Magnetomechanical sensor device for paramagnetic gas analysis with measuring of interference and method for same |
EP3318867A1 (en) * | 2014-12-22 | 2018-05-09 | ABB Schweiz AG | Method for operating a magnetomechanical sensor device for paramagnetic gas analysis |
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