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GB1099929A - Gas analysis - Google Patents

Gas analysis

Info

Publication number
GB1099929A
GB1099929A GB56967A GB56967A GB1099929A GB 1099929 A GB1099929 A GB 1099929A GB 56967 A GB56967 A GB 56967A GB 56967 A GB56967 A GB 56967A GB 1099929 A GB1099929 A GB 1099929A
Authority
GB
United Kingdom
Prior art keywords
bridge
meter
methane content
jan
responsive
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
GB56967A
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.)
WESTFAELISCHE BERGGEWERKSCHAFT
Original Assignee
WESTFAELISCHE BERGGEWERKSCHAFT
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 WESTFAELISCHE BERGGEWERKSCHAFT filed Critical WESTFAELISCHE BERGGEWERKSCHAFT
Publication of GB1099929A publication Critical patent/GB1099929A/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
    • 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)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

1,099,929. Measuring gas composition electrically. WESTFAELISCHE BERGGEWERKSCHAFTSKASSE. Jan.4, 1967 [Jan. 5, 1966], No.569/67. Heading G1N. A device for measuring the methane content of a gas sample comprises two resistance bridges, the first having a resistance arm R1 responsive to the combustion of the methane around it, and the second having an arm R5 responsive to the thermal conductivity of the sample. A meter is connected across the first bridge to normally indicate methane content. If the methane content exceeds 20% by volume, the second bridge is unbalanced sufficiently to energize a relay R through a transistor Tr and so disconnect the meter from the first bridge and re-connect it across the D. C. supply to the second bridge in series with a resistor 10 which is so dimensioned that the meter will show a full scale deflection.
GB56967A 1966-01-05 1967-01-04 Gas analysis Expired GB1099929A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0040662 1966-01-05

Publications (1)

Publication Number Publication Date
GB1099929A true GB1099929A (en) 1968-01-17

Family

ID=7602553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56967A Expired GB1099929A (en) 1966-01-05 1967-01-04 Gas analysis

Country Status (3)

Country Link
DE (1) DE1673306A1 (en)
FR (1) FR1509270A (en)
GB (1) GB1099929A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185577B (en) * 1986-01-21 1989-11-29 Draegerwerk Ag Method and apparatus for detection of combustible gases

Also Published As

Publication number Publication date
DE1673306A1 (en) 1971-06-16
FR1509270A (en) 1968-01-12

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