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文章介绍１种能即时并同时测量气溶胶样品中α与β放射性活度的放射性气溶胶监测仪。仪器在采样后２０ｍｉｎ内给出结果。采样时间为２０ｍｉｎ。活度测量、计算和结果打印由单板机控制的数据处理器完成。在所建议的采样条件、仪表工作条件及在常规的Ｒｎ、Ｔｈ子体天然本底条件下，仪器对长寿命核素形成的α与β气溶胶能同时给出测量结果，其探测下限值较低，适于常规监测使用。
This article describes a radioactive aerosol monitor capable of measuring the radioactivity of alpha and beta in aerosol samples simultaneously and simultaneously. The instrument gives the result within 20 min after sampling. Sampling time is 20min. Activity measurement, calculation and result printing are performed by a single-board data processor. In the proposed sampling conditions, instrument operating conditions and the conventional Rn, Th natural background under the conditions of the instrument for long-lived nuclides α and β aerosol formation can be given at the same time the measurement results, the detection limit Lower, suitable for routine monitoring.