GB1105046A - Instruments and methods for measuring the carbon monoxide content of combustion engine exhaust gases - Google Patents
Instruments and methods for measuring the carbon monoxide content of combustion engine exhaust gasesInfo
- Publication number
- GB1105046A GB1105046A GB4019566A GB4019566A GB1105046A GB 1105046 A GB1105046 A GB 1105046A GB 4019566 A GB4019566 A GB 4019566A GB 4019566 A GB4019566 A GB 4019566A GB 1105046 A GB1105046 A GB 1105046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon monoxide
- gases
- hydrogen
- resistors
- exhaust
- 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)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
1,105,046. Measuring carbon monoxide concentration electrically. WESTF€LISCHE BERGGEWERKSCHAFTSKASSE. Sept. 8, 1966 [Sept. 8, 1965 (2)], No.40195/66. Heading G1N. Carbon monoxide is detected in the presence of hydrogen and hydrocarbons, i.e. in exhaust gases from an I. C. engine, by mixing the exhaust with air in known proportions and catalyzing the exothermic oxidation of both the carbon monoxide and the hydrogen present but not the hydrocarbons, by passing the gases over two platinum resistors 19, 20, Fig. 4, the latter heated to a temperature at which it catalyzes the oxidation of both the carbon monoxide and hydrogen and the former heated to a lower temperature at which it catalyzes the oxidation of the hydrogen only. The two resistors are connected in one branch of a Wheatstone Bridge, Fig. 3 (not shown), which is balanced in the absence of carbon monoxide and hydrogen. In operation, therefore, the out-of-balance reading on the meter (5), gives an indication of the concentration of carbon monoxide present. The different temperatures of the resistors 19, 20 are obtained, using the same heating current, by using different wire strengths and/or coil distance and/or diameter. In the embodiment, exhaust gases are withdrawn from the exhaust by a probe (2, 12), Figs. 1, 2 (not shown), adjustably attached to a vertical rod (1, 11). The gases are cooled as they pass along the probe, the condensed water vapour collecting in a water separator (6). Solid impurities in the gases are removed by a ceramic filter (7) and lead tetraethylene by a further filter (8) of e.g. active carbon. The gases then pass into the measuring device where they are mixed with air in the ratio 1:1 and finally flow over the two heated resistors.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW0039866 | 1965-09-08 | ||
DE1965W0039865 DE1300315B (en) | 1965-09-08 | 1965-09-08 | Method for measuring the CO content in exhaust gases from internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1105046A true GB1105046A (en) | 1968-03-06 |
Family
ID=26002791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4019566A Expired GB1105046A (en) | 1965-09-08 | 1966-09-08 | Instruments and methods for measuring the carbon monoxide content of combustion engine exhaust gases |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1300315B (en) |
GB (1) | GB1105046A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036592A (en) | 1974-06-05 | 1977-07-19 | National Research Development Corporation | Detection of carbon monoxide |
GB2234819A (en) * | 1989-07-20 | 1991-02-13 | Atomic Energy Authority Uk | Gas sensor device with sampling and oxygen mixing facilities |
FR2824140A1 (en) * | 2001-04-25 | 2002-10-31 | Oldham | Analysis of gaseous mixture which may contain at least one flammable gas to determine its explosivity comprises placing gas in contact with heating element prior to passing gas over resistance element for analysis |
EP1417483A2 (en) * | 2001-07-16 | 2004-05-12 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123279A1 (en) * | 1981-06-12 | 1982-12-30 | Westfälische Berggewerkschaftskasse, 4630 Bochum | Method for the early detection of a fire, and fire detector |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB864293A (en) * | 1959-10-23 | 1961-03-29 | Iec Sieger Ltd | Improvements in apparatus for detecting inflammable gases |
-
1965
- 1965-09-08 DE DE1965W0039865 patent/DE1300315B/en active Pending
-
1966
- 1966-09-08 GB GB4019566A patent/GB1105046A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036592A (en) | 1974-06-05 | 1977-07-19 | National Research Development Corporation | Detection of carbon monoxide |
GB2234819A (en) * | 1989-07-20 | 1991-02-13 | Atomic Energy Authority Uk | Gas sensor device with sampling and oxygen mixing facilities |
FR2824140A1 (en) * | 2001-04-25 | 2002-10-31 | Oldham | Analysis of gaseous mixture which may contain at least one flammable gas to determine its explosivity comprises placing gas in contact with heating element prior to passing gas over resistance element for analysis |
EP1417483A2 (en) * | 2001-07-16 | 2004-05-12 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
EP1417483A4 (en) * | 2001-07-16 | 2005-04-13 | Sensor Tech Inc | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
AU2002355079B2 (en) * | 2001-07-16 | 2007-08-30 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
US7329389B2 (en) | 2001-07-16 | 2008-02-12 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
AU2002355079C1 (en) * | 2001-07-16 | 2008-03-06 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
US8201992B2 (en) | 2001-07-16 | 2012-06-19 | Sensor Tech, Inc. | Sensor device and method for qualitative and quantitative analysis of gas phase substances |
Also Published As
Publication number | Publication date |
---|---|
DE1300315B (en) | 1969-07-31 |
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