Method for performing a differential thermal analysis

US9310259B2 · kind B2 · utility

Assignee

• NETZSCH-Gerätebau GmbH · DE

Inventors

• Thomas Denner · Selb, DE
• Juergen Blumm · Selb, DE
• Otto Max Schaefer · Selb, DE
• Markus Hollering · Wunsiedel, DE
• Thilo Hilpert · Selb, DE
• Alexander Frenzl · Schwarzenbek, DE
• Stefan Lauterbach · Selb, DE
• Andreas Strobel · Zwingenberg, DE
• Rolf Preuss · Pulheim, DE
• Michael Gebhardt · Selb, DE
• Elena Moukhina · Selb, DE
• Alexander Schindler · Selbitz, DE
• Mathias Gradl · Seßlach, DE
• Gunter Herr · Haarth, DE
• Stephan Knappe · Hof, DE
• Markus Meyer · Annaberg-Buchholz, DE
• Gabriele Kaiser · Selb, DE
• Andre Nijmeh · Merkendorf, DE

Key dates

• Filing date: Jan 24, 2014
• Grant date: Apr 12, 2016
• Expiry date: Jun 18, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N25/4866
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for conducting a differential thermal analysis, in which a sample disposed in a temperable sample space is tempered according to an essentially linear temperature program extending from a start temperature to an end temperature, such that, from the result of a measurement of the sample temperature conducted during tempering at a number of measurement time points, a DTA signal is calculated as the difference between a measured sample temperature and a reference temperature calculated according to a temperature curve model. According to the invention, for every measurement time point, the relevant reference temperature is calculated by the following steps: (a) establish a time interval containing the relevant measurement time point; (b) calculate a non-linear adjustment function for the measured sample temperature curve in the time interval; and (c) calculate the reference temperature as a value of the adjustment function for the measurement time point.