GB1509361A - Gas detector - Google Patents
Gas detectorInfo
- Publication number
- GB1509361A GB1509361A GB68076A GB68076A GB1509361A GB 1509361 A GB1509361 A GB 1509361A GB 68076 A GB68076 A GB 68076A GB 68076 A GB68076 A GB 68076A GB 1509361 A GB1509361 A GB 1509361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- membrane
- gas
- mixture
- space
- particular gas
- 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
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
1509361 Gas analysis DISTILLERS CO (CARBON DIOXIDE) Ltd 6 Jan 1977 [8 Jan 1976] 00680/76 Addition to 1467048 Heading G1B A detector for detecting the presence of a particular gas in a mixture of gases is a modification of that of Parent Specification and comprises a space 3 bounded in part by a membrane 2 which is preferentially permeable to the particular gas and bounded in part by a thin flexible diaphragm which as shown may be formed by the same piece of material as is membrane 2, movement of the diaphragm being arranged to control flow through a nozzle 8 to which in use gas is supplied from pipe 14 at a steady pressure, and means 9, 10, 11, 4 to supply the mixture of gases to one face of the membrane, the arrangement being such that when the particular gas is present in the mixture it permeates through the membrane and changes the pressure in space 3 so causing the diaphragm to bow to produce a change of pressure in the supply of gas upstream from nozzle 8 and consequently a pneumatic signal at 16 to indicate the presence of the particular gas in the mixture. The detector may be used to detect carbon dioxide in the cellar of a public house, when the membrane is of silicone rubber and fresh air from outside the cellar is used as the atmosphere surrounding the space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB68076A GB1509361A (en) | 1977-01-06 | 1977-01-06 | Gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB68076A GB1509361A (en) | 1977-01-06 | 1977-01-06 | Gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1509361A true GB1509361A (en) | 1978-05-04 |
Family
ID=9708655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB68076A Expired GB1509361A (en) | 1977-01-06 | 1977-01-06 | Gas detector |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1509361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9235970B2 (en) | 2009-06-05 | 2016-01-12 | Xtralis Technologies Ltd | Gas detector for use with an air sampling particle detection system |
-
1977
- 1977-01-06 GB GB68076A patent/GB1509361A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9235970B2 (en) | 2009-06-05 | 2016-01-12 | Xtralis Technologies Ltd | Gas detector for use with an air sampling particle detection system |
| US9618440B2 (en) | 2009-06-05 | 2017-04-11 | Xtralis Technologies Ltd | Gas detector for use with an air sampling particle detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |