GB1467048A - Gas detector - Google Patents

Gas detector

Info

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
Application number
GB4702574A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB4702574A priority Critical patent/GB1467048A/en
Publication of GB1467048A publication Critical patent/GB1467048A/en
Expired legal-status Critical Current

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.
GB4702574A 1975-08-15 1975-08-15 Gas detector Expired GB1467048A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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