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设计了测量生产上居里级工业放射源放射性活度的放射性活度计。该活度计的探测器是根据测量活度范围研制的井型充气电离室。电离室前级放大器输出的电压信号通过1根屏蔽电缆传送给插在微型计算机主板上的1个12位ADC卡,对0～5V范围的电压信号,分辨率达1mV。测量数据用模拟指针式
A radioactivity meter designed to measure the radioactivity of Curie-class industrial radioactive sources was designed. The detector of the activity meter is a well-type pneumatic ionization chamber developed according to the measurement activity range. The voltage signal from the preamplifier of the ionization chamber is transmitted to a 12-bit ADC card inserted into the microcomputer main board through a shielded cable. The resolution of the voltage signal in the range of 0 to 5V is 1mV. Measurement data with analog pointer