【摘要】 介绍了ZJK-β型真空计的工作原理、结构设计,并对其性能进行了研究。该仪器和β放射电离规配用,用于火箭共底压力测量,测量范围为0.1～5000Pa。仪器采用单片机控制,能够实现量程自动转换、线性修正和压力自动校准,可以完成对测量压力的实时监测、动态趋势显示、数据存储等功能。性能研究结果表明,ZJK-β型真空计在测量范围内具有较好的线性,测量数据可靠,为火箭发射提供了安全保障。更多还原

【Abstract】 The operating principle,design and performance of ZJK-β vacuum gauge are described and discussed.The vacuum gauge in combination with an ionization vacuum gauge for β radiation is used in monitoring the pressure to the bulkhead of cryogenic tanks on launch vehicles within the pressure measuring range 0.1～5000Pa.The vacuum gauge is controlled by SCM to implement the automatic conversion of measuring range,linear correction and pressure calibration.It can also implement the real-time pressure monitoring,dynamic trend display and data storage.The performance investigation results indicated that the vacuum gauge provides not only the favorable linearity in measuring range but also the reliable data.更多还原