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故障现象 测量Ｋ(钾 ) ,刚开机零点飘移 ,几分钟后零点几乎无法调节 ,且在测量时 ,指针只上不回零位 (回位极慢 ) ,重复性极差。分析修理 该机是用于测定Ｋ、Ｎａ含量的检验用分析仪器 ,其电路结构是由两套相互独立的光电检测器、放大电路及显示系统完成的。因Ｎａ测定工作正
Fault phenomenon Measure K (potassium), just after starting the zero drift, the zero point can hardly be adjusted after a few minutes, and during measurement, the pointer only does not return to zero (return is extremely slow), and the repeatability is very poor. Analysis and Repair This machine is an analytical instrument for the determination of K and Na content. Its circuit structure is completed by two sets of mutually independent photodetectors, amplification circuits and display systems. Due to the determination of Na