作者：魏传喆, 潘江, 王功明

作者单位：中国计量大学, 浙江 杭州 310018

关键词：液体密度;异丁醇;振动管法;直接驱动

摘要：

为解决常用的U型管密度测量方法中存在的弊端，该文研制一套基于振动管原理的密度测量系统，该系统以通过振动管的交变电流实现振动激励，克服传统的振动管密度计振动管重心发生偏移的弊端。该系统由密度测量装置、恒温系统、压力系统以及数据测量系统组成。实验使用纯水和无水乙醇标定该装置在温度范围303.15~323.15 K、压力范围0.1~20 MPa的仪器常数。测量异丁醇在相应温度与压力范围内的密度，并与文献数据进行比较，验证装置的可行性。所得结果可以为其他研究人员提供参考。

Research on a direct drive vibration tube density meter
WEI Chuanzhe, PAN Jiang, WANG Gongming
China Jiliang University, Hangzhou 310018, China
Abstract: In order to overcome the drawbacks of commonly used U-shaped tube density measurement methods, a density measurement system was presented, which based on the principle of vibrating tube densimeter. Alternating current passed through the vibrating tube was used to excite the vibration of the U-shaped tube and overcome the problem of the center-of-gravity shifting existing in the traditional vibrating densimeter. The system consists of density measurement system, thermostatic system, pressure system, and data acquisition system. Pure water and pure ethanol were used to calibrate the apparatus at temperatures from 303.15 K to 323.15 K and pressures from 0.1 MPa to 20 MPa. The density of isobutanol in the corresponding temperatures and pressures range was measured and compared with literature data to verify the feasibility of the apparatus. The results obtained in this paper can serve as reference for other researchers.
Keywords: fluid density;isobutanol;vibrating tube method;direct-driven
2020, 46(6):83-88  收稿日期: 2019-04-30;收到修改稿日期: 2019-06-18
基金项目:
作者简介: 魏传喆(1994-),男,山东泰安市人,硕士研究生,专业方向为仪器科学与技术
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