OSCILLATION-TYPE DENSITY METER CALIBRATION IN VISCOSITY BY ICUMSA SUCROSE SOLUTIONS

A. Furtado, O. Pellegrino, J. Pereira, E. Filipe

Abstract

This communication evidences the applicability of the use of sucrose solutions, of whom density and viscosity were obtained via ICUMSA tables by means of refractive index measurements, to deduce calibrations curves for viscosity damping of a density meter in viscosity range from 20 mPa·s to 55 mPa·s, at 20 ºC, with an expanded uncertainty of 0,030 kg·m^-3. An interesting relationship between the difference of density indication without viscosity correction and density indication with viscosity correction was observed for DMA 5 000 density meter, allowing, without knowing the viscosity of the sample, to predict the correction to apply. The maximum deviations obtained in this work are much larger than the one earlier described.

Keywords

oscillation-type densimetry, viscosity, refractometry, metrological compatibility, ICUMSA tables

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IMEKO-WC-2015-TC9-211.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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