A Multiposition Method of Viscous Measurement for Small-Volume Samples With High Viscous
Document Type
Article
Publication Date
1-1-2020
Abstract
Measurements of viscosity of small-volume samples are critical in analytical chemistry, hydrodynamics, and micro-electromechanical systems. It is hard for the previous methods to measure the liquid with viscosity large than 150 mPa s. To enlarge the measurement range, a viscosity measurement method, in which the sample volume is less than 15μL , was designed in this article. In the proposed method, the measured range is expanded to 750 mPa s by the combination of flexible hinge and cantilever. In addition, to reduce the effects of surface tension, a multiposition method is adopted. The calibration results showed that the method performed well, and the uncertainty analysis indicated high accuracy. The effects of vessel width, density, and temperature on the results are also investigated. The relative uncertainty of viscosity was estimated to be 3% indicating the validity of this method. © 1963-2012 IEEE.
Keywords
Cantilever, density, flexible hinge, multiposition, viscosity
Divisions
fac_eng
Funders
Tianjin Natural Science Foundation under Grant 17JCYBJC19000 and Grant 18JCQNJC04800
Publication Title
IEEE Transactions on Instrumentation and Measurement
Volume
69
Issue
7
Publisher
Institute of Electrical and Electronics Engineers