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| Development of Double U Type Vibrating Tube Densimeter |
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Abstract In order to realize high-precision measurement of liquid density, a double U type vibrating tube densimeter based on electromagnetically driven principle was developed. The instrument constant of the device was calibrated in the temperature range from 278 K to 345 K. The performance of the device was verified by measuring the densities of ethanol and isopropanol, and the experimental data were compared with the results from REFPROP and literatures. The results showed that the experimental results agreed well with the literature data, which confirmed the reliability and accuracy of the experimental system. Finally, the measurement uncertainty of the experimental device was evaluated, and the expanded uncertainty of density was 0.42 kg/m3 (k=2).
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Received: 24 November 2023
Published: 19 March 2025
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Corresponding Authors:
jiang pan
E-mail: panjiang@cjlu.edu.cn
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WEN Zhiqiang, YUN Enxue, SUN Siyu, YANG Tenghui, WANG Bisong, WANG Leigang, LUO Xin, XU Jin, SUN Bingfeng, LI Wenbing, HAO Qiang. A Power Stabilized Low Noise Frequency Synthesizer for CPT Atomic Clocks[J]. Acta Metrologica Sinica, 2025, 46(2): 267-273. |
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2025, Vol. 46 
