GB1358368A - Apparatus for detection of combustible constituents in gas mixtures - Google Patents
Apparatus for detection of combustible constituents in gas mixturesInfo
- Publication number
- GB1358368A GB1358368A GB100373A GB100373A GB1358368A GB 1358368 A GB1358368 A GB 1358368A GB 100373 A GB100373 A GB 100373A GB 100373 A GB100373 A GB 100373A GB 1358368 A GB1358368 A GB 1358368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- chamber
- relay
- expelled
- bellows
- 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
- 239000000470 constituent Substances 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 title 1
- 239000000203 mixture Substances 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000005070 sampling Methods 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000010926 purge 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)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1358368 Detecting combustible gases electrically VSESOJUZNY NAUCHNOISSLEDOVATELSKY INSTITUT ANALITICHESKOGO PRIBO ROSTROENIA 8 Jan 1973 1003/73 Heading G1N An apparatus for measuring alcohol in breath comprises a gas sampling unit including a calibrated vessel 9 divided by a bellows 10 into a gas sampling chamber 11 and an air chamber 12; the gas chamber being filled by gas flow from mouthpiece 7, moisture separator 8 electro-pneumatic relay 18 and non-return valve 14 so that as the gas chamber fills fresh air is expelled from air chamber 12 via duct 23 to purge reaction chamber 17 of the products of any previous analysis; when the gas chamber is filled means 13 closes contacts of switch 29 to actuate a system of relays and motor-controlled switches Fig.3 (not shown) whereby the relay 18 is switched to block further ingress of gas to the chamber 11, the 200 c.c. gas sample therein being expelled to the reaction chamber 17, due to weight of the means 13 collapsing the bellows, by way of duct 16 and relay 18, and absorbed on an aluminium oxide body 25, next a heating coil 26 is energized and also a bridge circuit Fig. 5 (not shown) including a catalytic temperature sensitive resistance element 27 and a non- catalytic temperature sensitive resistance element 28 so that the gas is desorbed from the body and its combustible constituents burnt on the bridge element, the resulting signal being passed to an indication unit. The apparatus is maintained at a temperature of 45-50‹C by a heating element 30.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722263040 DE2263040C3 (en) | 1972-12-22 | Device for the automatic detection of flammable components in gas mixtures | |
| GB100373A GB1358368A (en) | 1972-12-22 | 1973-01-08 | Apparatus for detection of combustible constituents in gas mixtures |
| FR7303387A FR2216878A5 (en) | 1972-12-22 | 1973-01-31 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722263040 DE2263040C3 (en) | 1972-12-22 | Device for the automatic detection of flammable components in gas mixtures | |
| GB100373A GB1358368A (en) | 1972-12-22 | 1973-01-08 | Apparatus for detection of combustible constituents in gas mixtures |
| FR7303387A FR2216878A5 (en) | 1972-12-22 | 1973-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1358368A true GB1358368A (en) | 1974-07-03 |
Family
ID=27184918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB100373A Expired GB1358368A (en) | 1972-12-22 | 1973-01-08 | Apparatus for detection of combustible constituents in gas mixtures |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2216878A5 (en) |
| GB (1) | GB1358368A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0133502A3 (en) * | 1983-08-05 | 1985-04-03 | Kraftwerk Union Aktiengesellschaft | Probe for the detection of combustible gases |
| WO1996002826A1 (en) * | 1994-07-19 | 1996-02-01 | European Atomic Energy Community (Euratom) | Device and method for measuring reactive components in gases |
| GB2435099A (en) * | 2006-02-14 | 2007-08-15 | Autoliv Dev | Means for monitoring accuracy of measurements of gas contaminants |
| CN1333246C (en) * | 2000-06-05 | 2007-08-22 | 松下电器产业株式会社 | Gas concentration sensor, hydrogen purification unit using this and cell system |
| GB2499322A (en) * | 2012-02-08 | 2013-08-14 | Draeger Safety Ag & Co Kgaa | Catalytic gas sensor |
-
1973
- 1973-01-08 GB GB100373A patent/GB1358368A/en not_active Expired
- 1973-01-31 FR FR7303387A patent/FR2216878A5/fr not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0133502A3 (en) * | 1983-08-05 | 1985-04-03 | Kraftwerk Union Aktiengesellschaft | Probe for the detection of combustible gases |
| WO1996002826A1 (en) * | 1994-07-19 | 1996-02-01 | European Atomic Energy Community (Euratom) | Device and method for measuring reactive components in gases |
| CN1333246C (en) * | 2000-06-05 | 2007-08-22 | 松下电器产业株式会社 | Gas concentration sensor, hydrogen purification unit using this and cell system |
| GB2435099A (en) * | 2006-02-14 | 2007-08-15 | Autoliv Dev | Means for monitoring accuracy of measurements of gas contaminants |
| GB2499322A (en) * | 2012-02-08 | 2013-08-14 | Draeger Safety Ag & Co Kgaa | Catalytic gas sensor |
| CN103245700A (en) * | 2012-02-08 | 2013-08-14 | 德拉格安全股份两合公司 | Gas sensor |
| GB2499322B (en) * | 2012-02-08 | 2014-03-05 | Draeger Safety Ag & Co Kgaa | Gas sensor |
| US9201032B2 (en) | 2012-02-08 | 2015-12-01 | Dräger Safety AG & Co. KGaA | Gas sensor |
| CN103245700B (en) * | 2012-02-08 | 2016-05-11 | 德拉格安全股份两合公司 | Gas sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2216878A5 (en) | 1974-08-30 |
| DE2263040A1 (en) | 1974-07-11 |
| DE2263040B2 (en) | 1976-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |