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Advanced Calibration, Adjustment, and Operation of a Density and Sound Speed Analyzer



Tara J. Fortin, Arno D. Laesecke, Malte B. Freund, Stephanie L. Outcalt


Benchtop measurement systems have emerged as powerful tools in the ongoing quest for thermophysical property data. We demonstrate that these instruments can yield high quality data if operated in an informed manner. The importance of sample purity, reproducibility over repeatability, expanded calibration and adjustment protocols, and rigorous uncertainty estimates are emphasized. We report measurement results at atmospheric pressure and temperatures from 70 °C to 5 °C, including expanded uncertainty estimates, for the density and speed of sound of isooctane and for the speed of sound of toluene. These data are useful for validating the performance of such instruments.
Journal of Chemical Thermodynamics


Adjustment, Atmospheric Pressure, Calibration, Density, Isooctane, Speed of Sound, Toluene, Uncertainty, Vibrating Tube Densimeter


Fortin, T. , Laesecke, A. , Freund, M. and Outcalt, S. (2013), Advanced Calibration, Adjustment, and Operation of a Density and Sound Speed Analyzer, Journal of Chemical Thermodynamics, [online], (Accessed April 21, 2024)
Created February 26, 2013, Updated November 10, 2018