Journal of Thermal Analysis and Calorimetry

, Volume 118, Issue 2, pp 603–611 | Cite as

Uncertainty budget for high temperature heat flux DSCs

Article
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Abstract

This study addresses the lack of published information regarding uncertainty for high temperature heat flux differential scanning calorimeters. No data were found in the existing literature stating an uncertainty budget for temperatures above 1,000 °C. The presented results identify the main influencing factor for uncertainty with the instruments used—measurement repeatability—up to a temperature of 1,400 °C. Results show findings from analyzing a series of repeated baseline and sapphire measurements and the influence from different working equations. The uncertainty budget for temperature calibration of DSCs is crucial in cases where accuracy in temperature is significant. Data are also provided from repeated temperature calibrations on the melting point of pure metals from a supplied standard set that comes with the instrument. In addition, carbon eutectics have been used to address an issue resulting from the lack of available calibration materials for high temperatures up to 1,500 °C (above the melting point of gold).

Keywords

Heat flux differential scanning calorimeter DSC Heat capacity Uncertainty High temperature Baseline repeatability 
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Notes

Acknowledgements

This project was jointly funded by the European Metrology Research Programme (EURAMET) participating countries and the European Union as part of the Joint Research Project (JRP) “Metrology for Improved Power Plant Efficiency”.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  1. 1.Graz University of TechnologyGrazAustria

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