液体黏滞系数测量方法的改进与研究

Improvement and Research on Measuring Liquid Viscosity Coefficient by Falling Ball Method

通过对传统落球法液体黏滞系数测量仪器存在的问题进行整理和分析,在THQNZ-1型液体黏滞系数测试仪的基础上,采用高精度激光对管传感器与单片机计数控制器相连接,将采集到的数据通过串口传输数据至电脑,并利用计算机对实验数据进行科学精准处理,用高效的方法计算出液体的黏滞系数。同时,为了减少环境温度对液体黏滞系数测量值的影响,把测试仪置于恒温箱内,通过温度控制器调节恒温箱的温度,利用可实时控制实验环境温度的方法,最大限度地把控因环境温度变化对测量结果的不确定性。

Through classifies and analyzes the problems existing in the traditional liquid viscosity coefficient measuring instrument by means of the ball falling method.On the basis of the THQNZ-1 liquid viscosity coefficient measuring instrument,the high-precision laser tube sensor is used to connect with the microcontroller counting controller,and the collected data is transmitted to the computer through the serial port,and the computer is used to scientifically and accurately process the experimental data.The viscosity coefficient of liquid is calculated with an efficient method.Meanwhile,in order to reduce the influence of ambient temperature on the measured value of liquid viscosity coefficient,the tester is placed in the thermostat,and the temperature of the thermostat is adjusted by the temperature controller.Thus,the uncertainty of the measurement result due to the change of ambient temperature is controlled to the maximum extent by using the method of real-time control of the experimental ambient temperature.