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- W2253376777 abstract "Glass hydrometers are simple but effective instruments for measuring the density of liquids. Glass hydrometers calibration based on the Archimedes law, using silicon ring as a reference standard solid density, n-tridecane with density stability and low surface tension as the standard working liquid, based on hydrostatic weighing method designs a glass hydrometer calibration system. Glass hydrometer calibration system uses CCD image measurement system to align the scale of hydrometer and liquid surface, with positioning accuracy of 0.01 mm. Surface tension of the working liquid is measured by Whihemy plate. According to twice glass hydrometer weighing in the air and liquid can calculate the correction value of the current scale. In order to verify the validity of the principle of the hydrostatic weighing method of glass hydrometer calibration system, for measuring the density range of (770-790) kg/m 3 , with a resolution of 0.2 kg/m 3 of hydrometer. The results of measurement compare with the Physikalisch-Technische Bundesanstalt(PTB) ,verifying the validity of the calibration system." @default.
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- W2253376777 date "2016-01-26" @default.
- W2253376777 modified "2023-09-23" @default.
- W2253376777 title "Study of glass hydrometer calibration by hydrostatic weighting" @default.
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- W2253376777 doi "https://doi.org/10.1117/12.2211284" @default.
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