χ、γ射线巡测仪常见故障及修理方法辽宁省劳动卫生职业病防治所江有玲χ、γ射线巡测仪是一种便携式场所防护剂量测量仪器。它由电离室、放大器、电源、显示仪表等部分组成。近年生产仪器的放大器均由ＭＯＳ场效管和集成电路组成，电源则采用变换方式由一节一号电池供电... χ, γ-ray inspection instrument common faults and repair methods Liaoning Labor Health Occupational Disease Prevention and Control Institute Jiang linglong, γ-ray inspection instrument is a portable protective dose measurement equipment. It consists of an ionization chamber, amplifiers, power supplies, and display instruments. In recent years, the amplifiers of production equipments are all composed of MOS field effect transistors and integrated circuits, and the power supply is transformed by a No. 1 battery.