Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeter

QSpace/Manakin Repository

Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeter

Show full item record


Title: Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeter
Author: Cristancho, Diego; Mantilla, Ivan; Ejaz, Saquib; Hall, Kenneth R; Iglesias Silva, Gustavo; Atilhan, Mert
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.
URI: http://hdl.handle.net/10576/10645
Date: 2010-01-05

Files in this item

Files Size Format View
FTE Online.pdf 460.9Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Search QSpace


Advanced Search

Browse

My Account