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| Study on Influence of Liquid Surface Tension on Solid Density Measurement by Hydrostatic Weighing |
| GU Ying-zi,LUO Zhi-yong,CHEN Zhao-hui,XU Chang-hong |
| National Institute of Metrology, Beijing 100013, China |
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Abstract Hydrostatic weighing is widely used in solid density measurement, and it is also a method with high accuracy.The influence of liquid surface on solid density measurement is studied based on Archimedes Principle. A set of high accuracy hydrostatic weighing device are used to measure density of solid sample. Two different liquid with different surface tension are used as working medium. The results show that the density of measurement dispersion in low surface tension liquid is better than in high surface tension liquid.
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2013, Vol. 34 
