FR724527A - Greyometric device - Google Patents

Greyometric device

Info

Publication number
FR724527A
FR724527A FR724527DA FR724527A FR 724527 A FR724527 A FR 724527A FR 724527D A FR724527D A FR 724527DA FR 724527 A FR724527 A FR 724527A
Authority
FR
France
Prior art keywords
greyometric
greyometric device
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
Other languages
French (fr)
Inventor
Etienne Audibert
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
Application granted granted Critical
Publication of FR724527A publication Critical patent/FR724527A/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
FR724527D 1930-12-22 1930-12-22 Greyometric device Expired FR724527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR724527T 1930-12-22

Publications (1)

Publication Number Publication Date
FR724527A true FR724527A (en) 1932-04-28

Family

ID=9108958

Family Applications (1)

Application Number Title Priority Date Filing Date
FR724527D Expired FR724527A (en) 1930-12-22 1930-12-22 Greyometric device

Country Status (1)

Country Link
FR (1) FR724527A (en)

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