Fremgangsmåte og anordning for materialtesting ved anvendelse av differenstemperaturmålinger

A method and apparatus for timely and accurate measurement of material parameters are disclosed. A test sensor (30) measures the temperature of a sample of material as it is heated up and/or cooled down. A reference sensor (20) is used to obtain differential temperature measurements as the temperatu...

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Bibliographic Details
Main Author BATES, CALVIN
Format Patent
LanguageNorwegian
Published 14.10.2003
Edition7
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Summary:A method and apparatus for timely and accurate measurement of material parameters are disclosed. A test sensor (30) measures the temperature of a sample of material as it is heated up and/or cooled down. A reference sensor (20) is used to obtain differential temperature measurements as the temperature of the test sample is varied. A differential temperature trace i s generated and analyzed in order to determine various characteristics of the material being tested. In one embodiment, the sodium fluoride to aluminum fluoride ratio (NaF:A1F3) and alumina concentration in a Hall bath aluminum smelting operation are determined in order to efficiently control smelting o f aluminum metal. In this embodiment, bath temperature and liquidus temperatur e may be measured and compared in order to determine the amount of superheat o f the bath and to prevent the operation of smelters at higher temperatures tha n necessary.
Bibliography:Application Number: NO20030003609