Finnigan　Mat　4515色／质联用仪真空系统的维护与维修

Maintenance of Vacuum System in Finnigan Mat 4515 GC/MS

叙述大型精密仪器ＦｉｎｎｉｇａｎＭａｔ４５１５色／质联用仪的真空系统的维护与维修，利用报废的旧仪器零部件，在技术上稍加改动，便可修复即将报废的色／质联用仪，使其继续发挥作用，为科研工作赢得了时间。投资少，见效快，事半功倍，具有一定的经济和社会效益，是维修旧的大型仪器的有效途径。

This paper introduces the maintenance of vacuum system in ten years old Finnigan Mat 4515 GC/MS. A scrapped oil diffusion pump from Finnigan Mat 4021 GC/MS was repaired and used instead of the damaged one of the Finnigan Mat 4515 GC/MS.This measure saves much money in purchasing a new set of instrument and is a valid experience for making full use of large scale instruments in China.The repairment is described in detail.