摘要
针对原有表面张力系数测定仪存在的仪器可操作性差、系统误差大和测量范围窄等不足,设计了一种可控温表面张力系数测定仪,增加了金属环水平调节装置,改进了液膜拉脱方式,增加液体加热装置.通过实验数据对比可以看出,改进后的实验装置操作方便、实验误差小、重复性好.
To solve the problems of the original instrument of surface tension coefficient of liquid, the poor operability, the great systematic errors and the narrow range of measurement, a temperature- controllable instrument of surface tension coefficient of liquid was designed. The instrument was e- quipped with a ring-level adjustment device and a sample heating device, its method of pulling out the liquid film was improved. The experimental results showed that the improved instrument had the ad- vantages of easy operation, small experimental error, good repeatability and wide suitability.
出处
《物理实验》
2015年第11期24-28,共5页
Physics Experimentation
关键词
表面张力系数
拉脱法
力敏传感器
surface tension coefficient
pull-out method
force sensor
