一种直接驱动式振动管密度测量装置的研制

研制了一种基于直接驱动式振动管原理的密度测量装置。在振动管内为真空和充满无水乙醇的条件下,温度为260～360K、压力为0.1～20MPa范围内标定了装置的仪器常数。通过测量异丙醇和仲丁醇的液体密度检验了装置的性能,并将实验结果与文献数据进行比较,异丙醇数据与文献数据偏差在0.2%以内,仲丁醇数据与文献数据偏差在0.3%以内,验证了装置的精度满足密度测量需求。

Apparatus for Density Measurement with Direct-driven Vibrating Tube Method

A density measurement apparatus based on the direct-driven vibrating tube method was developed. Under the condition that the vibrating tube was filled with vacuum and ethanol, the instrument constants were calibrated at temperatures from 260K to 360K and pressures from 0.1MPa to 20MPa. The performance of the device was validated by measuring the liquid densities of isopropanol and sec-butanol, and the experimental results were compared with literature data. The deviation of experimental data for isopropanol and sec-butanol from literature data were within ±0.2% and ±0.3%, respectively. It was verified that the accuracy of the device met the requirements of density measurement. The results could serve as the references for other researchers.