GB756662A - Apparatus for detecting carbon monoxide - Google Patents
Apparatus for detecting carbon monoxideInfo
- Publication number
- GB756662A GB756662A GB1938852A GB1938852A GB756662A GB 756662 A GB756662 A GB 756662A GB 1938852 A GB1938852 A GB 1938852A GB 1938852 A GB1938852 A GB 1938852A GB 756662 A GB756662 A GB 756662A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermistors
- carbon monoxide
- remove
- atmosphere
- duct
- 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
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract 4
- 229910002091 carbon monoxide Inorganic materials 0.000 title abstract 4
- 239000007800 oxidant agent Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical compound [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 abstract 1
- 229910001369 Brass Inorganic materials 0.000 abstract 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229920001875 Ebonite Polymers 0.000 abstract 1
- -1 Hopcalite Substances 0.000 abstract 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract 1
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- 239000010951 brass Substances 0.000 abstract 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052794 bromium Inorganic materials 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 239000000741 silica gel Substances 0.000 abstract 1
- 229910002027 silica gel Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 229930195735 unsaturated hydrocarbon Natural products 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)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Apparatus for the detection of carbon monoxide in an atmosphere comprises a pair of thermistors 4, 5 arranged in the atmosphere to be tested, an oxidizer 6 in contact with one thermistor and an inert material 45 in contact with the other <PICT:0756662/III/1> thermistor, and electrical means to indicate the difference in temperature between the thermistors. The thermistors are arranged in series in a duct 41 through which the atmosphere flows; the duct 41 is formed in a block 40 of a poor heat conductor, e.g. expanded ebonite, surrounded by a barrel 47 of copper or brass acting as a heat reservoir. The atmosphere enters at 49, passes to chamber 51 through a coil 48 soldered to the barrel 47, and thence through the duct to outlet 54. The oxidizer may be a catalyst, e.g. Hopcalite, or an oxidizing agent, e.g. silver permanganate. Air to be tested, e.g. from coal mines, may first pass through a filter to remove solid particles, then through mercuric sulphate, magnesium sulphate, and sulphuric acid impregnated on silica gel, or bromine in active charcoal, to remove unsaturated hydrocarbons, then through soda lime or soda asbestos to remove water vapour and acidic gases, and finally through anhydrous magnesium perchlorate to remove water vapour and ammonia. For testing or calibrating the apparatus, a vessel containing Hopcalite may be included to remove all the carbon monoxide. The thermistors are connected in the arms of a wheatstone bridge and the voltage obtained is amplified and used to operate a warning lamp and buzzer, and a meter showing carbon monoxide concentration (see Group XXXVIII).
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1938852A GB756662A (en) | 1952-07-31 | 1952-07-31 | Apparatus for detecting carbon monoxide |
| BE550765A BE550765A (en) | 1952-07-31 | 1956-09-03 | |
| NL210355A NL106482C (en) | 1952-07-31 | 1956-09-04 | |
| DEC13629A DE1090882B (en) | 1952-07-31 | 1956-09-05 | Device for the detection of oxidizable gases in an oxygen-containing atmosphere |
| FR1188461D FR1188461A (en) | 1952-07-31 | 1956-09-05 | Carbon monoxide detector device |
| US674741A US2916358A (en) | 1952-07-31 | 1957-07-29 | Apparatus for detecting carbon monoxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1938852A GB756662A (en) | 1952-07-31 | 1952-07-31 | Apparatus for detecting carbon monoxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB756662A true GB756662A (en) | 1956-09-05 |
Family
ID=10128527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1938852A Expired GB756662A (en) | 1952-07-31 | 1952-07-31 | Apparatus for detecting carbon monoxide |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE550765A (en) |
| FR (1) | FR1188461A (en) |
| GB (1) | GB756662A (en) |
| NL (1) | NL106482C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003537A2 (en) * | 2002-06-28 | 2004-01-08 | Rosemount Analytical Inc. | Device for sensing the concentration of a combustible specie |
-
1952
- 1952-07-31 GB GB1938852A patent/GB756662A/en not_active Expired
-
1956
- 1956-09-03 BE BE550765A patent/BE550765A/xx unknown
- 1956-09-04 NL NL210355A patent/NL106482C/xx active
- 1956-09-05 FR FR1188461D patent/FR1188461A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003537A2 (en) * | 2002-06-28 | 2004-01-08 | Rosemount Analytical Inc. | Device for sensing the concentration of a combustible specie |
| WO2004003537A3 (en) * | 2002-06-28 | 2004-04-29 | Rosemount Analytical Inc | Device for sensing the concentration of a combustible specie |
| US7527717B2 (en) | 2002-06-28 | 2009-05-05 | Rosemount Analytical, Inc. | Sulfur resistant sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1188461A (en) | 1959-09-23 |
| BE550765A (en) | 1956-09-29 |
| NL106482C (en) | 1963-11-15 |
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