GB1467048A - Gas detector - Google Patents
Gas detectorInfo
- Publication number
- GB1467048A GB1467048A GB4702574A GB4702574A GB1467048A GB 1467048 A GB1467048 A GB 1467048A GB 4702574 A GB4702574 A GB 4702574A GB 4702574 A GB4702574 A GB 4702574A GB 1467048 A GB1467048 A GB 1467048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- pressure
- contacts
- plunger
- microswitch
- 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)
- Respiratory Apparatuses And Protective Means (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
1467048 Fluid pressure switches DISTILLERS CO (CARBON DIOXIDE) Ltd 15 Aug 1975 [30 Oct 1974 7 May 1975] 47025/74 and 19230/75 Heading H1N [Also in Divisions G1 and F2] A pressure switch comprises right angled cross-section frame 29, collapsible bag 30 having an inlet for gas, a strip of springy material 31, electrical microswitch 32 and an adjustable screw 33. Strip 31 is fixed at its end 34. As gas flows into bag 30, strip 31 moves into contact with screw 33 and eventually its free end bearing on to plunger of microswitch 32 makes the plunger retract and so close the contacts in the switch. The contacts may be connected in an external alarm circuit. Alternatively a pressure switch as described with a very small differential pressure adjustment may be used in conjunction with a relay to maintain the alarm condition once it has been triggered by a predetermined increase in pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4702574A GB1467048A (en) | 1975-08-15 | 1975-08-15 | Gas detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4702574A GB1467048A (en) | 1975-08-15 | 1975-08-15 | Gas detector |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1467048A true GB1467048A (en) | 1977-03-16 |
Family
ID=10443436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4702574A Expired GB1467048A (en) | 1975-08-15 | 1975-08-15 | Gas detector |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1467048A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103988A2 (en) * | 1982-08-24 | 1984-03-28 | Scottish & Newcastle Breweries plc | Method of for monitoring concentration of gas in a liquid |
GB2300073A (en) * | 1995-04-19 | 1996-10-23 | Novomec Controls Limited | Microswitch actuating device |
-
1975
- 1975-08-15 GB GB4702574A patent/GB1467048A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103988A2 (en) * | 1982-08-24 | 1984-03-28 | Scottish & Newcastle Breweries plc | Method of for monitoring concentration of gas in a liquid |
EP0103988A3 (en) * | 1982-08-24 | 1984-09-26 | Scottish & Newcastle Breweries Plc | Method of and apparatus for monitoring concentration of gas in a liquid |
GB2300073A (en) * | 1995-04-19 | 1996-10-23 | Novomec Controls Limited | Microswitch actuating device |
GB2300073B (en) * | 1995-04-19 | 1997-04-30 | Novomec Controls Limited | Microswitch actuating device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |