本文件定义了呼吸保护装置（RPD）的术语，并规定了测量单位，潜水设备除外。它表示RPD、RPD零件或说明手册上可能需要的图形符号，以便指导使用RPD的人员操作。交叉引用:IEC 60417EN 250ISO 7933EN 148-1ISO 17420-3ISO 11079ISO 14617-15ISO 16900-5ISO 7000EN 12021:2014购买本文件时可获得的所有现行修订均包含在购买本文件中。

This document defines terms and specifies units of measurement for respiratory protective devices (RPDs), excluding diving apparatus. It indicates graphical symbols that can be required on RPDs, parts of RPD or instruction manuals in order to instruct the person(s) using the RPD as to its operation.Cross References:IEC 60417EN 250ISO 7933EN 148-1ISO 17420-3ISO 11079ISO 14617-15ISO 16900-5ISO 7000EN 12021:2014All current amendments available at time of purchase are included with the purchase of this document.