GB740436A - Improvements in gas analyzing apparatus - Google Patents
Improvements in gas analyzing apparatusInfo
- Publication number
- GB740436A GB740436A GB31532/53A GB3153253A GB740436A GB 740436 A GB740436 A GB 740436A GB 31532/53 A GB31532/53 A GB 31532/53A GB 3153253 A GB3153253 A GB 3153253A GB 740436 A GB740436 A GB 740436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- filament
- different
- pict
- orifices
- 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 abstract 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
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)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Apparatus for analyzing a gas for two different components comprises two cells 8, 12 each containing a catalytic element connected in a balanceable electric network 21, 22, and arranged to be heated and exposed to the gas, and a generator 9 <PICT:0740436/III/1> <PICT:0740436/III/2> which supplies two different gaseous products, one to each cell, to combine respectively with the two different constituents of the gas. A sample of furnace flue gas or internal combustion engine exhaust gas, to be analysed for combustible constituents and oxygen, is introduced through pipe 3 via a pressure regulator 5, which may be of the type described in U.S.A. Specification 2,438,973, and is divided into two streams; one stream flows through orifice 7 and mixes with hydrogen from pipe. 11. Elements comprising the orifices 6, 7 are replaceable by elements having orifices of different sizes. The oxygen and hydrogen are provided by an electrolytic generator 9 (see Group XXXVI). The cells 8, 12 and the pipes leading thereto are arranged within a metallic housing 4 maintained at constant temperature by heater 18 and thermostat 19. As shown in Fig. 2 each cell is provided with an insulated base 40 carrying measuring filament 42 and comparison filament 41; shield 43 is divided by partition 44 into two parts, that enclosing the measuring filament being provided with metallic mesh screen 45 and that enclosing the comparison filament with a small aperture 46. The results of the two analyses may be combined by using a single balanceable electric network as described in U.S.A. Specification 2,420,430, or by providing links 23, 24, actuated by motor M; movement of the link 24 operates pilot control valve 25 and/or indicator 26. The gas sample regulator 5 comprises a reciprocating part 27 which drops by gravity if the gas flow is interrupted; magnet 28 and armature 29 then actuate switch 31 which operates lamp 32 or a control valve. The analyser may be modified to analyse two separate gas samples respectively for combustible content and free oxygent content.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US320323A US2821462A (en) | 1952-11-13 | 1952-11-13 | Gas analyzing devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB740436A true GB740436A (en) | 1955-11-09 |
Family
ID=23245877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31532/53A Expired GB740436A (en) | 1952-11-13 | 1953-11-13 | Improvements in gas analyzing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2821462A (en) |
| GB (1) | GB740436A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL236207A (en) * | 1958-02-18 | |||
| US3084536A (en) * | 1960-10-06 | 1963-04-09 | Foxboro Co | Split flow gas analysis detector |
| DE1202032B (en) * | 1961-05-29 | 1965-09-30 | Zd Y V I Plzen Narodni Podnik | Device for displaying the deviation of the concentration of unburned components or of free oxygen from heating exhaust gases |
| US3777366A (en) * | 1971-05-17 | 1973-12-11 | Triangle Environment Corp | Chamber and filament method for flow through thermal conductivity micro size measuring chambers |
| US3961900A (en) * | 1973-06-05 | 1976-06-08 | Catalytic Pollution Controls, Inc. | Combustible vapor detector |
| US3972681A (en) * | 1975-07-14 | 1976-08-03 | Leeds & Northrup Company | Flow-through thermal detector |
| US5246668A (en) * | 1990-09-20 | 1993-09-21 | Space Biospheres Ventures | Air sampling and analysis system |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1356598A (en) * | 1917-05-09 | 1920-10-26 | Edmund A Cahill | Automatic alarm-valve |
| US1529470A (en) * | 1923-09-08 | 1925-03-10 | Dowd James Edward | Low-level alarm switch |
| US1770059A (en) * | 1929-01-28 | 1930-07-08 | Surface Comb Co Inc | Combustion control |
| US1918702A (en) * | 1931-02-02 | 1933-07-18 | Charles Engelhard Inc | Construction of thermal conductivity cells |
| US1988841A (en) * | 1932-04-19 | 1935-01-22 | Arnold P Hayward | Signal system |
| US2273981A (en) * | 1938-11-10 | 1942-02-24 | Cities Service Oil Co | Analysis of gases |
| US2404993A (en) * | 1940-01-22 | 1946-07-30 | Cities Service Oil Co | Gas analyzer |
| US2378019A (en) * | 1940-05-28 | 1945-06-12 | Mine Safety Appliances Co | Gas testing method and apparatus |
| US2335032A (en) * | 1940-10-12 | 1943-11-23 | Cities Service Oil Co | Analysis of gases |
| US2420430A (en) * | 1943-05-26 | 1947-05-13 | Bailey Meter Co | Gas analyzer |
| US2438973A (en) * | 1943-05-26 | 1948-04-06 | Bailey Meter Co | Fluid flow regulator |
| US2488758A (en) * | 1946-01-26 | 1949-11-22 | Magnetrol Inc | Magnetic control device |
| US2652315A (en) * | 1951-02-08 | 1953-09-15 | Bailey Meter Co | Gas analyzing devices |
-
1952
- 1952-11-13 US US320323A patent/US2821462A/en not_active Expired - Lifetime
-
1953
- 1953-11-13 GB GB31532/53A patent/GB740436A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2821462A (en) | 1958-01-28 |
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