frequency inverter, AC32-P AV deiver for all kinds of fan& pump Energy save 25% -80% Closed-loop control Built-in ... PLC,PID Product Name: Frequency inverter for fan& pumpDetailsProduct Description: According to the characteristics of fluid machinery, Veich ... , AC32-P changes speed of the fan and the pump, and regulates the gas, liquid flow, velocity and pressure, to replace the ...