The volume of the lines in which the pressures are trapped are large compared to the scanner valve and transducer volume(more than 100 times) so that the volume when vented to the transducer is not materially affected.

• 收集压力的管道容积比扫描阀和传感器的容积大得多（超过100倍）。因此，接通传感器实际上对容积没有影响。