GB466390A - Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof - Google Patents
Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereofInfo
- Publication number
- GB466390A GB466390A GB23691/36A GB2369136A GB466390A GB 466390 A GB466390 A GB 466390A GB 23691/36 A GB23691/36 A GB 23691/36A GB 2369136 A GB2369136 A GB 2369136A GB 466390 A GB466390 A GB 466390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- determining
- detecting
- amount
- gaseous mixture
- 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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
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 Electric Means (AREA)
Abstract
<PICT:0466390/III/1> In the estimation of combustible constituents of a gas mixture by determining the change of resistance of an electric conductor, the latter comprises a wire or rod 17 of material having a constant resistance value and temperature coefficient which is enclosed in a tube of porous material 18 coated or impregnated with the catalytic agent 19. Two such elements are arranged in a Wheatstone bridge in the known manner for comparing the gas with a standard gas, which may be a portion of the gas under test from which the combustible constituents have been removed. The element exposed to the standard gas may or may not contain catalyst; in the former case the gas connections of the two cells may be changed over when the first catalyst becomes exhausted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP466390X | 1935-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB466390A true GB466390A (en) | 1937-05-27 |
Family
ID=12752858
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23691/36A Expired GB466390A (en) | 1935-09-03 | 1936-08-29 | Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof |
| GB23692/36A Expired GB466391A (en) | 1935-09-03 | 1936-08-29 | Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23692/36A Expired GB466391A (en) | 1935-09-03 | 1936-08-29 | Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR812138A (en) |
| GB (2) | GB466390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1280587B (en) * | 1965-11-02 | 1968-10-17 | Rau Swf Autozubehoer | Exhaust gas testing device for motor vehicles |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE741297C (en) * | 1938-11-03 | 1943-11-09 | Aeg | Device for determining the content of combustible gases in gas mixtures |
| US2514106A (en) * | 1948-10-25 | 1950-07-04 | Fruit Growers Express Company | Temperature measuring apparatus |
| US2684592A (en) * | 1949-04-11 | 1954-07-27 | American Instr Co Inc | Automatic temperature-compensated humidity indicator |
| US2743167A (en) * | 1950-10-10 | 1956-04-24 | Robert H Cherry | Instrument for measuring carbon monoxide in oxygen bearing atmosphere |
| US2768069A (en) * | 1952-06-05 | 1956-10-23 | Factory Mutual Res Corp | Combustible gas detector |
| DE1006184B (en) * | 1952-07-10 | 1957-04-11 | Hartmann & Braun Ag | Gas analysis device with hot wire system |
| GB1013682A (en) * | 1960-12-15 | 1965-12-15 | English Electric Co Ltd | Improvements in and relating to gas detecting apparatus |
-
1936
- 1936-08-29 GB GB23691/36A patent/GB466390A/en not_active Expired
- 1936-08-29 GB GB23692/36A patent/GB466391A/en not_active Expired
- 1936-08-31 FR FR812138D patent/FR812138A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1280587B (en) * | 1965-11-02 | 1968-10-17 | Rau Swf Autozubehoer | Exhaust gas testing device for motor vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| GB466391A (en) | 1937-05-27 |
| FR812138A (en) | 1937-04-30 |
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