介绍了TAM-Ⅱ型实时连续氚监测仪的研制。仪器的探测器由4个对称放置的有效体积为2L丝壁电离室构成,使电离室对被监测氚产生的记忆效应减到最小,对γ本底的补偿,在几乎所有方向好于97％。该探测器配备一台工作在微电流积分模式的场效应管静电计,氚监测仪的测量过程由一个单片机自动控制,如自动转换量程、数据显示、储存与处理。该监测仪的测量范围为6～106Bq/L,特别适用于氚设施和实验室手套箱或烟囱排出氚的连续自动监测。%This paper introduces development of a real-time continuoustritium monitor model TAM-Ⅱ. The detector of the instrument is comprised of four geometric-symmetry open wall ionization chamber with the effective volume of 2L, which enables to minimize the remember effect of the ionization chamber due to contamination by the monitored tritium. It's γ background compensation rate is better than 97％ in almost all direction. The detector is equipped with a FET static electrometer working in micro-current integration mode. The measurement process of the tritium monitor can be controlled automatically by a micro-processor sheet, such as automatic range changing, data displaying and storing, and data processing. The measuring range is 6～106Bq/L. It is especially application for monitoring tritium in off-gas effluence from glove-box or stack of tritium facility and laboratory.
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