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Author Cristancho, Diegoen_US
Author Mantilla, Ivanen_US
Author Ejaz, Saquiben_US
Author Hall, Kenneth Ren_US
Author Iglesias Silva, Gustavoen_US
Author Atilhan, Merten_US
Available date 2010-01-27T18:14:24Zen_US
Publication Date 2010-01-05en_US
Publication Name International Journal of Thermophysics
Citation Cristancho, D. E., Mantilla, I. D., Ejaz, S., Hall, K. R., Iglesias-Silva, G. a., & Atilhan, M. (2010). Force transmission error analysis for a high-pressure single-sinker magnetic suspension densimeter. International Journal of Thermophysics, 31, 698–709en_US
URI doi:10.1007/s10765-010-0702-3
Abstract The magnetic suspension densimeter (MSD) is a sophisticated, stateof- the-art device that provides extremely accurate results for density measurements. The MSD uses a magnetic technique to couple a mass inside a measurement cell with an external mass balance for mass measurement. This article presents a force transmission error (FTE) analysis for a high-pressure, single-sinker MSD. Due to the magnetic working principle of the apparatus, magnetic properties of the high-pressure cell and external magnetic fields affect the measurements slightly. For the analysis, McLinden et al. suggest making measurements using two different sinkers, a titanium sinker and a copper sinker, having the same mass. The measurements cover densities for methane, ethane, carbon dioxide and nitrogen over the temperature range from 265K to 450K (±5 mK stability) up to 180MPa (uncertainty of 0.01% full scale: 200MPa). Comparing and manipulating the measurements permit determination of apparatus and fluid specific effects that contribute to the FTE. For this MSD, the apparatus effect is about 200 ppm, which effectively masks any fluid specific effect. A comprehensive analysis of the FTE produces a uniform deviation for density values of about 0.05% at 2σ across the full range of pressure.en_US
Language enen_US
Publisher Springer Science and Business Mediaen_US
Subject Densimeteren_US
Subject Force Transmission Erroren_US
Subject High Pressureen_US
Subject Magnetic Suspension Couplingen_US
Title Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeteren_US
Type Articleen_US

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