膨胀法真空标准装置传递阀控制单元

Transfer Valve Control Unit in the Pressure Reduction by Expansion Vacuum Standard Equipment

本文提供了膨胀法真空标准装置中传递阀控制单元的一种设计。它能自动控制传递阀进行气体取样和膨胀过程，并同时记录膨胀次数。

Abstract This test provides a designing method of transfer valve in the pressure reduction by expansion standard equipment. It is able to control one time or continuous expansion of transfer valve or valve series. Meanwhile record times.