放射线检测仪表在六十年代已得到应用,七十年代以来,使用单位急剧上升。原因是多方面的,首先是由于这类仪表具备别类自动检测仪表所少有的功能,如:可以进行非接触式测量,可以进行非破坏性检测,相对于其他可采用的方法其测试精度和灵敏度都较高。同时放射线检测仪表能承受诸如蒸气、有毒气体等恶劣环境条件;加之有些放射性同位素半衰期很长,易于维护,相当稳定。其次是工业生产的要求不断提高,如对产品质量的严格要求,产品在性能价格方 Radiation detection instrumentation in the sixties has been applied, since the seventies, the use of units increased dramatically. The reason is multifaceted, first of all due to the fact that such instruments have the functions of other types of automatic detection instruments, such as: non-contact measurement, non-destructive testing, relative to other methods can be used to test its accuracy And the sensitivity is high. At the same time, radiation detectors can withstand harsh environmental conditions such as steam and toxic gases. In addition, some radioactive isotopes have a long half-life and are easy to maintain and quite stable. Followed by the continuous improvement of industrial production requirements, such as the strict requirements of product quality, product performance in the price side