基于PLC的恒压供水系统正文 第一篇：基于PLC的恒压供水系统基于PLC的恒压供水控制系统Its functions are: it can make the pressure sensor to collect the pressure signal in the pipe line net, and this pressure signal can be converted analog signals to and be transmitted to the intelligence conversion an instrument(the SR93 series PID modulator), the intelligence conversion instrument (the SR93 series PID modulator) display the actual pressure value of the tube net, and the intelligence conversion instrument (the SR93 series PID
