本标准规定了用于检测和测量电离辐射场水平或放射性表面污染水平的便携式辐射防护仪器的具体校准和校准相关要求。在本标准中，便携式辐射防护仪器是指携带到特定设施或位置使用的电池供电仪器。计数率计和定标器，当与适当的检测探头一起用于定量活动时，可被视为便携式辐射防护仪器，并应被视为本标准中的单个装置。

This standard establishes specific calibration and calibration-related requirements for portable radiation protection instruments used for detection and measurement of levels of ionizing radiation fields or levels of radioactive surface contamination. For purposes of this standard, portable radiation protection instruments are those battery-powered instruments that are carried to a specific facility or location for use. Count rate meters and scalers, when used with an appropriate detection probe for quantifying activity, can be considered portable radiation protection instruments and should be treated as a single unit for the purposes of this standard.