空泡漂移实验中需要采集的参数主要有两个入口的空气与水的流量、出口空气与水各自的流量。空气的流量使用OMEGA气体质量流量计测量，测量范围是0.1-20 SLM，精度为±0.8% RDG+0.2% FS，水的流量使用HONEYWELL电磁流量计及DOWESTON电磁流量计测量，测量范围分别为600-12000 L/h、0-10 m3/h，精度都为±0.5%。使用NI 9220板卡对这些信息进行采集，采集板卡的测量范围在-10-10 V，精度为1.37 mV,使用Signal Express软件对这些参数进行实时监测。实验得到的空泡漂移系数的不确定度为6.3%。

The parameters to be collected in the void drift experiment mainly include the flow of air and water at the inlet and the flow of air and water at the outlet. The flow rate of air is measured by OMEGA gas mass flowmeter. The measurement range is 0.1-20 SLM, and the accuracy is ± 0.8% RDG+0.2% FS. The flow rate of water is measured by HONEYWELL electromagnetic flowmeter and DOWESTON electromagnetic flowmeter, and the accuracy is ± 0.5%. The NI 9220 board is used to collect these information. The measurement range of the acquisition board is -10-10 V, and the accuracy is 1.37 mV. The Signal Express software is used to monitor these parameters in real time. The uncertainty of the void drift coefficient obtained by the experiment is 6.3%.