Advanced calibration, adjustment, and operation of a density and sound speed analyzer

被引：231

作者：

Fortin, Tara J. ^{[1
]}

Laesecke, Arno ^{[1
]}

Freund, Malte ^{[1
]}

Outcalt, Stephanie ^{[1
]}

机构：

[1] NIST, Mat Measurement Lab, Appl Chem & Mat Div, Boulder, CO 80305 USA

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2013年 / 57卷

关键词：

Density; Isooctane; Speed of sound; Toluene; Uncertainty; Vibrating tube densimeter; VIBRATING TUBE DENSIMETER; THERMODYNAMIC PROPERTIES; VISCOSITY MEASUREMENTS; N-HEPTANE; TEMPERATURE; PRESSURES; 2,2,4-TRIMETHYLPENTANE; MIXTURES; LIQUIDS; ETHER;

D O I：

10.1016/j.jct.2012.09.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Benchtop measurement systems have emerged as powerful tools in the ongoing quest for thermophysical property data. We demonstrate that these instruments can yield results of high quality 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 ambient atmospheric pressure and temperatures from 343 K to 278 K, 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. Published by Elsevier Ltd.

引用

页码：276 / 285

页数：10

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