Int. J. Metrol. Qual. Eng.
Volume 13, 2022
|Number of page(s)||6|
|Published online||08 June 2022|
New apparatus for the determination of liquid density at primary level in TUBITAK UME
The Scientific and Technical Research Council of Turkey, National Metrology Institute (TUBITAK-UME), Gebze, Turkey
* Corresponding author: email@example.com
Accepted: 3 April 2022
This work aimed to describe the new apparatus of TUBITAK UME for determining the density of liquids at the primary level by means of a hydrostatic weighing (HW) using a solid density standard. This new apparatus provides TUBITAK UME with the necessary infrastructure to certify reference liquids of density with adequate uncertainty to be used at a secondary level, such as for calibration of oscillation type density meters. The HWS produces reference values for liquids with different physical properties such as viscosity, surface tension and viscoelasticity in the case of non-Newtonian liquids. In this HWS, the automation of all mechanical parts such as loading/unloading of the reference weights and sinker, movement of bath, working of pump etc. took place. In this way, the primary level liquid density measurements were realized with uncertainities smaller than 0,01 kg/m3. The automation also effected the robustness of the system by providing the lower repeatability value and stabilization of temperature.
Key words: liquid density reference liquids / hydrostatic weighing
© U.Y. Akcadag and G.S. Sariyerli, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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