DIN EN 60846-2005
辐射防护仪.β、X和γ辐射的环境和(或)定向剂量当量(率)测量仪和(或)监测仪
Radiation protection instrumentation - Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta, X and gamma radiation (IEC 60846:2002, modified); German version EN 60846:2004