【作者】 石志侠； 张艾明； 延军；

【Author】 Shi Zhixia Zhang Aiming Yan JunChina Institute for Radiation ProtectionTaiyuan P.O. 120, Shanxi, 030006

【机构】 中国辐射防护研究院；

【摘要】 DTY-104型氡、测量仪是103型的改进型。采用经严格地数学计算后推导的“差值法”代替在103型中使用的“简化差值法”,使氡析出率的结果更准确:以80C31单片机为核心的电子学线路的重新设计,使仪器的操作更方便,功能更强;将湿度传感器置于收集室中自动完成湿度对收集效率的修正的设计更为合理;收集膜的更换技术可缩短等待时间,提高工作效率。该仪器可用于环境中氡浓度的连续测量以及地面、墙壁、建筑材料表面析出率的测量,也可用于钍矿区浓度和析出率的测量,该仪器对氡浓度和氡析出率的灵敏度分别为4Bq/m³和5X10^-5Bq/s/m²。更多还原

【Abstract】 Model DTY-104 radon measuring meter is an improvement on Model DTY-103. "Difference value method" is used, which has been strictly developed and makes the radon exhalation rate more accurate, instead of using "simplified difference value method". The electronic circuit is redesigned and 80C31 single chip processor is used, which makes the operation more convenient and the function strengthened. In a more reasonable manner, the humidity sensor is mounted in the collection chamber. The collection efficiency can be automatically corrected. The technique of exchanging the collection mylar reduces the waiting time and improves work efficiency. The apparatus is applied to the measurement of the radon concentration in the environment and the radon exhalation from the surface of the building materials, walls and ground. The lower detection limit is about 4 Bq/m3 for 222Rn concentration and 5X10-5Bq/s/m2 for 222Rn exhalation rate.更多还原