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美国南加州大学设计的CRM-3型自记水氡仪具有体积小、功耗低、操作方便、连续自记等优点。但该仪器的连续脱气装置长1.5米,直径8公分的鼓泡简,还要外接一个高1.5米,重65公斤的高压氮气钢瓶,不但体积庞大,而且每隔一个月就要更换一瓶氮气,采购和运输都存在很大问题,在一般台站和群测点使用极不方便。针对上述脱气装置存在的问题,在罗光伟同志的具体指导下,经过多次试验,制成了一
The United States University of Southern California designed CRM-3 self-recording radon instrument has the advantages of small size, low power consumption, easy operation, continuous self-record. However, the continuous degassing device of the instrument is 1.5 meters long and has a diameter of 8 cm. Besides, a high-pressure nitrogen cylinder with a height of 1.5 meters and a weight of 65 kg is not only bulky, but also needs to be replaced every other month Nitrogen, procurement and transportation have great problems, in the general stations and group measurement point of use is extremely inconvenient. Aiming at the problems existing in the above degassing device, under the specific guidance of Comrade Luo Guangwei, after many tests, a