本文件规定了机械增压真空泵的最大容许压差、有效压缩比、零通量压缩比和溢流阀压差的测量方法和特殊要求。 它适用于用于中真空或粗真空应用的机械增压真空泵，包括气冷机械增压真空泵和多机械增压真空泵系统。 它涵盖了机械增压器不同于通常的容积式真空泵的特殊特性。最大容许压差Δ Pmax、有效压缩比Keff、零通量压缩比K0和溢流阀压差Δ P1是机械增压真空泵性能的特殊性。

This document specifies methods and special requirements for measuring the maximum tolerable pressure difference, effective compression ratio, compression ratio with zero throughput and overflow valve pressure difference of mechanical booster vacuum pumps. It applies to mechanical booster vacuum pumps employed for medium vacuum or rough vacuum applications including gas-cooled mechanical booster vacuum pump and multiple mechanical booster vacuum pump systems. It covers particular characteristics of mechanical boosters that are different from those of the usual positive displacement vacuum pumps. Maximum tolerable pressure difference Δp_max, effective compression ratio K_eff, compression ratio with zero throughput K₀ and overflow valve pressure difference Δp₁ are special characteristics of the performance of mechanical booster vacuum pumps.