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.)
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
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Chemical & Material Sciences
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Chemical Kinetics & Catalysis
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Electrochemistry
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Physics & Mathematics
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Health & Medical Sciences
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Life Sciences & Earth Sciences
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Analytical Chemistry
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Biochemistry
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General Health & Medical Sciences
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General Physics & Mathematics
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Immunology
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Pathology
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Investigating Or Analyzing Materials By The Use Of Electric Means
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Vorrichtung zum Feststellen von Methan oder anderen Kohlenwasserstoffen in der Luft,insbesondere in Gruben, auf Grundlage der Verbrennung des Methans an einem Gluehfadenaus katalytischem Metall
Grubenlampe zum Anzeigen schlagender Wetter unter Benutzung eines Vorheizkoerpers fuer das entzuendbare Gasgemisch und eines Doppelmetallstreifens, der sich bei Erwaermung verschieden ausdehnt und ein Signal einschaltet