本文件规定了测量体积流量、基础压力、水蒸气的方法 容积式真空的公差、功耗和最低启动温度 泵，其在大气压力下排放气体，且通常基础压力<10 kPa。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies methods for measuring the volume flow rate, base pressure, water vapour tolerance, power consumption, and the lowest start-up temperature of positive displacement vacuum pumps, which discharge gas against atmospheric pressure and with a usual base pressure <10 kPa.All current amendments available at time of purchase are included with the purchase of this document.