BS EN 61577-2:2017描述了测量温度的仪器的具体要求 户外、住宅和工作场所空气中222Rn和220Rn的活性浓度 包括地下矿山。本标准实际上适用于所有类型的电子测量仪器 基于现场或连续测量。活性浓度可以是 通过泵送或将含有222Rn和/或220Rn的空气扩散到敏感区域进行测量 检测装置的体积或在特定时刻采集空气样本（抓取采样）。 IEC 61577-1中规定了用于测量的不同类型仪器。本标准不适用于使用木炭吸附、驻极体或固态的仪器 核径迹探测器。交叉引用:GUM:1995EN 61187IEC 61000-6-4:2006EN ISO 11665-1（ISO 11665-1:2012）ASEN 60068-2-27（IEC 60068-2-27:2008）ASEN 61140（IEC 61140:2016）ASISO 11665-1:2012IEC 61187:1993ISO/IEC指南98-3:2008版1EN 61000-6-4（IEC 61000-6:2006）ASIEC 61577-1:2006IEC 61140:2016IEC 60068-2-27:2008包含以下内容:勘误表，2018年3月

BS EN 61577-2:2017 describes the specific requirements for instruments measuring the activity concentration of airborne 222Rn and 220Rn outdoors, in dwellings, and in workplaces including underground mines.This standard applies practically to all types of electronic measuring instruments that are based on either spot or continuous measurements. The activity concentration can be measured by pumping or by diffusing the air containing 222Rn and/or 220Rn into the sensitive volume of the detection unit or at a particular moment by taking an air sample (grab sampling).The different types of instrumentation used for measurements are stated in IEC 61577-1.The standard does not apply to instruments using charcoal adsorption, electrets or solid state nuclear track detectors.Cross References:GUM:1995EN 61187IEC 61000-6-4:2006EN ISO 11665-1 (ISO 11665-1:2012) ASEN 60068-2-27 (IEC 60068-2-27:2008) ASEN 61140 (IEC 61140:2016) ASISO 11665-1:2012IEC 61187:1993ISO/IEC GUIDE 98-3:2008 Ed 1EN 61000-6-4 (IEC 61000-6-4:2006) ASIEC 61577-1:2006IEC 61140:2016IEC 60068-2-27:2008Incorporates the following:Corrigendum, March 2018