FR1415407A - Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature - Google Patents

Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature

Info

Publication number
FR1415407A
FR1415407A FR997229A FR997229A FR1415407A FR 1415407 A FR1415407 A FR 1415407A FR 997229 A FR997229 A FR 997229A FR 997229 A FR997229 A FR 997229A FR 1415407 A FR1415407 A FR 1415407A
Authority
FR
France
Prior art keywords
determining
content
air
measuring device
various gases
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
FR997229A
Other languages
French (fr)
Inventor
Rolf Huebner
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 filed Critical
Priority to FR997229A priority Critical patent/FR1415407A/en
Application granted granted Critical
Publication of FR1415407A publication Critical patent/FR1415407A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state

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)
FR997229A 1964-12-03 1964-12-03 Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature Expired FR1415407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR997229A FR1415407A (en) 1964-12-03 1964-12-03 Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR997229A FR1415407A (en) 1964-12-03 1964-12-03 Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature

Publications (1)

Publication Number Publication Date
FR1415407A true FR1415407A (en) 1965-10-22

Family

ID=8843929

Family Applications (1)

Application Number Title Priority Date Filing Date
FR997229A Expired FR1415407A (en) 1964-12-03 1964-12-03 Portable measuring device for determining the content of the air in bottom mines of various gases of a given nature

Country Status (1)

Country Link
FR (1) FR1415407A (en)

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