GB567101A - Improvements in or relating to apparatus for detecting explosive gases - Google Patents

Improvements in or relating to apparatus for detecting explosive gases

Info

Publication number
GB567101A
GB567101A GB321043A GB321043A GB567101A GB 567101 A GB567101 A GB 567101A GB 321043 A GB321043 A GB 321043A GB 321043 A GB321043 A GB 321043A GB 567101 A GB567101 A GB 567101A
Authority
GB
United Kingdom
Prior art keywords
filaments
plug
battery
gas
situated
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
GB321043A
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 GB321043A priority Critical patent/GB567101A/en
Publication of GB567101A publication Critical patent/GB567101A/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
    • 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

567,101. Electric resistances. POOLE, R. Feb. 26, 1943, No. 3210. [Class 37] [Also in Group III] In apparatus for detecting explosive gases, of the kind comprising an electrically heated filament and a compensating filament operating at a lower temperature, the filaments being connected in a Wheatstone bridge circuit and both situated in a current of the gas to be tested, the two filaments are carried on a single replaceable mount inserted in the chamber traversed by the gas. Preferably, the mount comprises a cylindrical plug 23 fitted centrally in the chamber 21 so as to leave an annular gas space which ia constricted by two projecting flanges 23a, 23b on the plug. Between the flanges the plug is cut away to form two semicylindrical chambers, separated by a partition 27 and surrounded by a perforated sleeve 28. The filaments 25a, 26a are situated in these chambers and connected to terminals 25, 26 on the end of the plug. The filaments are matched so that when the unit is replaced the calibration of the instrument is unchanged. The filaments are connected in known manner in a Wheatstone bridge with a battery, measuring instrument, and two-way switch, whereby the latter can be used to test the battery. The instruments may be mounted on a board with hinged lid attached to a belt and brace harness worn by the operator, the battery being carried at the back of the belt.'
GB321043A 1943-02-26 1943-02-26 Improvements in or relating to apparatus for detecting explosive gases Expired GB567101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB321043A GB567101A (en) 1943-02-26 1943-02-26 Improvements in or relating to apparatus for detecting explosive gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB321043A GB567101A (en) 1943-02-26 1943-02-26 Improvements in or relating to apparatus for detecting explosive gases

Publications (1)

Publication Number Publication Date
GB567101A true GB567101A (en) 1945-01-29

Family

ID=9754027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB321043A Expired GB567101A (en) 1943-02-26 1943-02-26 Improvements in or relating to apparatus for detecting explosive gases

Country Status (1)

Country Link
GB (1) GB567101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557008A (en) * 1944-02-07 1951-06-12 Poole Ralph Apparatus for detecting explosive gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557008A (en) * 1944-02-07 1951-06-12 Poole Ralph Apparatus for detecting explosive gases

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