【摘要】 AEC—Ⅰ型自动排气控制仪(Automatic Exhaust Control)可与真空泵配套使用排除水氡观测闪烁室内的残留氡气。该仪器性能稳定、操作简单,能够对闪烁室自动按“排气-抽真空-再排气-再抽真空”顺序循环操作,还可以根据需要调节“排气-抽真空”状态的循环时间,提高排气效率,排气后的闪烁室本底达到《规范》要求,并在面板上实现了排气时间可视化。在该仪器试运行期间,对仪器的稳定性、真空时间和排气时间对排气效果的影响、仪器连续使用时间对排气效果的影响、与手动排气结果对比等方面进行测试分析,结果认为:AEC—Ⅰ型自动排气控制仪控制精度高,性能稳定,对闪烁室的排气效果达到规范要求,可以作为水氡观测辅助设备用于闪烁室的排气工作。更多还原

【Abstract】 The AEC-I automatic exhaust control instrument with a vacuum pump can be used to exclude rudimental radon from water radon scintillation chamber. The device has the characteristics of stable performance, simple operation and in scintillation chamber it can be automatically and circularly operated in order of "exhaust-vacuum-exhaust again-vacuum again". It can also adjust the cycle time of "exhaust-vacuum" status according to the need and improve the exhaust efficiency. After exhausting, the background of scintillation chamber can achieve the requirement of "standard", and we can visualize the exhaust time on the device panel. During the trial operation of the device, many factors are analyzed, such as the stability of device, the influence of vacuum time and exhaust time on exhaust effect, the influence of continuous service time on the exhaust effect, the contrast with results of manual exhaust and so on. The results show that: AEC-I automatic exhaust control instrument has high precision on control, stable performance, and its exhaust effect in scintillation chamber can meet the requirements of specification, so it can be used as the water radon observation auxiliary device in the exhaust of scintillation chamber.更多还原