IEC 60846-2:20 15适用于便携式或可运输剂量当量（速率）计和/或监测器，用于在紧急情况下测量能量高达10 MeV的外部β、X和γ辐射的环境和/或定向剂量当量（速率）。本国际标准的目的是规定剂量当量（速率）计的设计要求和性能特征，用于在紧急情况下测定ICRU报告47中定义的环境和/或定向剂量当量（速率）。与上一版本相关的主要技术变更包括对IEC 60846-1:20 09修订版的更新。 本出版物应与IEC 60846-1:20 09一起阅读。

IEC 60846-2:2015 applies to portable or transportable dose equivalent (rate) meters and/or monitors for the measurement of ambient and/or directional dose equivalent (rate) from external beta, X and gamma radiation for energies up to 10 MeV during emergency situations. The object of this International Standard is to specify the design requirements and the performance characteristics of dose equivalent (rate) meters intended for the determination of ambient and/or directional dose equivalent (rate) as defined in ICRU Report 47 under emergency conditions. The main technical change with regard to the previous edition consists of an update to the revised edition of IEC 60846-1:2009.

This publication is to be read in conjunction with IEC 60846-1:2009.