GB124453A - Improvements relating to Apparatus for the Detection and Measurement of Gases. - Google Patents

Improvements relating to Apparatus for the Detection and Measurement of Gases.

Info

Publication number
GB124453A
GB124453A GB11216A GB11216A GB124453A GB 124453 A GB124453 A GB 124453A GB 11216 A GB11216 A GB 11216A GB 11216 A GB11216 A GB 11216A GB 124453 A GB124453 A GB 124453A
Authority
GB
United Kingdom
Prior art keywords
atmosphere
wires
cavities
detecting
constituent
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
GB11216A
Inventor
Gilbert Arden Shakespear
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 GB11216A priority Critical patent/GB124453A/en
Publication of GB124453A publication Critical patent/GB124453A/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
    • G01N27/18—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 changes in the thermal conductivity of a surrounding material to be tested
    • G01N27/185—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 changes in the thermal conductivity of a surrounding material to be tested using a catharometer

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

124,453. Shakespear, G. A. Jan. 4, 1916. Explosive and combustible gases, detecting.-In apparatus for detecting the presence of a known constituent in a gaseous mixture, such as hydrogen in the atmosphere of an air-ship shed, or methane in the atmosphere of a coal mine, similar electric conducting - wires c are arranged in cavities a, a<1> of a metal block, one of the cavities a being closed, and the other cavity a' communicating by small perforations d with the atmosphere. Current from a battery g is passed through both wires, which are inserted in different arms of a Wheatstone bridge as shown, and a balance is secured by means of the other resistances e, e<1>, under which conditions the heated wires remain at similar temperatures by losing heat at the same rate. An alteration in the proportion of the constituent in question in the atmosphere will cause a variation in the rate of loss of heat of the exposed wire, of which the change of resistance as determined by re-adjusting the bridge is a measure.
GB11216A 1916-01-04 1916-01-04 Improvements relating to Apparatus for the Detection and Measurement of Gases. Expired GB124453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11216A GB124453A (en) 1916-01-04 1916-01-04 Improvements relating to Apparatus for the Detection and Measurement of Gases.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11216A GB124453A (en) 1916-01-04 1916-01-04 Improvements relating to Apparatus for the Detection and Measurement of Gases.

Publications (1)

Publication Number Publication Date
GB124453A true GB124453A (en) 1919-04-03

Family

ID=32340090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11216A Expired GB124453A (en) 1916-01-04 1916-01-04 Improvements relating to Apparatus for the Detection and Measurement of Gases.

Country Status (1)

Country Link
GB (1) GB124453A (en)

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