GB588954A - Improvements in or relating to gas or vapour detector devices - Google Patents

Improvements in or relating to gas or vapour detector devices

Info

Publication number
GB588954A
GB588954A GB610945A GB610945A GB588954A GB 588954 A GB588954 A GB 588954A GB 610945 A GB610945 A GB 610945A GB 610945 A GB610945 A GB 610945A GB 588954 A GB588954 A GB 588954A
Authority
GB
United Kingdom
Prior art keywords
gas
combustion chamber
diffusion chamber
aneroid
chambers
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
GB610945A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB610945A priority Critical patent/GB588954A/en
Publication of GB588954A publication Critical patent/GB588954A/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
    • G01N7/12—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 the diffusion being followed by combustion or catalytic oxidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (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 Using Thermal Means (AREA)

Abstract

In a detector for inflammable gases in which the gas is burnt by a heated filament causing a reduction in pressure and the operation of an indicator, the combustion chamber is formed of non-porous material and is connected by gas-communicating means with a diffusion chamber provided with porous means for the entry of the gas to be tested. As shown, the top of the cylindrical metal combustion chamber 1 is formed by a metal disc 4 provided with apertures leading to the diffusion chamber 7, having a porous plate 6. The electric filament 9 is carried on a removable holder 10 and is heated through a spring contact 15 from a battery in the casing 18. One or more passages 19 lead to aneroid chambers 20 which through contacts 21, 22 operate a bulb 26 or a gas percentage meter (for <PICT:0588954/III/1> example as described in Specification 549,583). In a modification, Fig. 5 (not shown), the combustion chamber and diffusion chamber are connected by pipes and in a further modification, Fig. 6 (not shown), the apparatus is adapted to be attached to a battery casing for use with a cap or head lamp. A manometer or other pressure operated device may replace the aneroid chambers.
GB610945A 1945-03-12 1945-03-12 Improvements in or relating to gas or vapour detector devices Expired GB588954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB610945A GB588954A (en) 1945-03-12 1945-03-12 Improvements in or relating to gas or vapour detector devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB610945A GB588954A (en) 1945-03-12 1945-03-12 Improvements in or relating to gas or vapour detector devices

Publications (1)

Publication Number Publication Date
GB588954A true GB588954A (en) 1947-06-06

Family

ID=9808548

Family Applications (1)

Application Number Title Priority Date Filing Date
GB610945A Expired GB588954A (en) 1945-03-12 1945-03-12 Improvements in or relating to gas or vapour detector devices

Country Status (1)

Country Link
GB (1) GB588954A (en)

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