落球法测液体粘滞系数的不确定度推算

Calculating the Uncertainty of the Viscosity Coefficient for Liquid by Using Fall-ball Method

根据"测量不确定度"理论推导落球法测量液体粘滞系数不确定度的传递公式。对形式复杂的不确定度传递公式作简化处理;实验数据计算表明:简化后的不确定度估算方法更加方便、快捷且可操性强。

The transfer formula of the uncertainty of the liquid viscosity coefficient measured by using fall-ball method was derived based on the theory of measuring uncertainty.Taking into account lots of factors which affect the value of the viscosity coefficient of liquid,the original uncertainty formula were simplified.Experimental data indicates that simplified formula of the uncertainty was more convenient,quick and operable.