An automaticcontrol system for chemical injection into feedwater is designed, using KMM single loop programmable controller.
设计了给水加药自动调节系统，并给出了用KM M单回路可编程调节器实现的方法。
2
The structure and feature of the automaticcontrol floating ion exchanger are introduced. The application of this ion exchanger to desalting system of industrial boiler feedwater was reported.