| JSZ-2型间歇/连续数字式自动测氡仪 |
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| 引用本文： | 李正蒙,李彤起,杨管德.JSZ-2型间歇/连续数字式自动测氡仪[J].地震学报,1980,2(4):438-446. |
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| 作者姓名： | 李正蒙 李彤起 杨管德 |
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| 作者单位： | 国家地震局兰州地震研究所 |
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| 摘 要： | 本文描述了一种可用于试验研究地震前兆, 观测地下水中氡气浓度连续变化的设备——JSZ-2型自动测氡仪.它由玻璃质连续脱气装置, 时间程序自动控制装置, 闪烁脉冲计数装置和数字重复记录装置构成.仪器可进行间歇或连续观测, 最高可测氡浓度1000埃曼, 误差水<±10%, 观测结果和时间同时打印表出. 水流量Q水=2.0升/分, 气流量Q气=200—450毫升/分, 灵敏度～800脉冲/分/埃曼, 响应度<5分钟, 脱气效率～50%.通过各种条件性能试验, 该仪器与国内外类似连续测氡仪相比, 具有直观性好, 灵敏度高, 准确可靠, 操作简便等特点;尤其是玻璃式脱气装置更具有抗腐蚀、易清洗、成本低等优点.基本上满足当前地震区氡气观测工作的要求.
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TYPE JSZ-2 INTERMITTENT/CONTINUOUS DIGITAL AND AUTOMATIC RADON MEASURING INSTRUMENT |
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| Institution: | Lanzhou Earthquake Research Institute State Seismological Bureau |
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| Abstract: | An automatic radon measuring instrument type JSZ-2 for observing the continuous change of radon concentration of underground water in the search of earthquake precursors is described in this paper. It consists of four essential portions, namely, (1) continuous degassing device made of glass; (2) automatic programming controller of timing; (3) scintillation impulse counter; (4) digital repeated recorder.The set can be used to record intermittently or continuously for radon content of underground water, maximum 1, 000 Emans, with errors ±10%. The quantity of water flow Qwater=2.0 liters/minute and of gas flow Qgas=200—450 milli-liters/minute. Sensitivity is about 800 impulses/minute/Eman., response, less than 5 minutes, efficiency of degasification about 50%.Under various conditions, this instrument has been subjected to tests for its actual performance. It can be said that in comparison with instruments of similar nature, made both in China and abroad, this instrument has the characters of better direct viewing, higher sensitivity and reliability, ease of operation, etc. Particularly, the glass degassing device has the advantage of anti-corrosion, ease of cleaning and low cost. The instrument can essentially meet the requirements of Radon observation in earthquake areas. |
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