Dear all,
Now i'm doing a project for the aluminium strip degreasing line. There is a conductivity control for the liquid in the tank.
Control element: metering pump 315l/h with variable speed control motor(370W 1440rpm), upstream is Sinamic converter.
Measuring sensor: conductivity meter. JUMO.
The pump will feed the alkaline solution into the tank(22m3) and the conductivity in the tank will be controlled in the range 10~15 ms/cm.
Anybody have some experiece for it.
My plan is to control the on-off time(pulse, PID) for the pump in a fixed low speed, but i don't know whether it is allowed that the pump on-off in so short time( approx. 1 min).
Anybody have some suggestions or new idea for the control.
Thanks a lot!
Now i'm doing a project for the aluminium strip degreasing line. There is a conductivity control for the liquid in the tank.
Control element: metering pump 315l/h with variable speed control motor(370W 1440rpm), upstream is Sinamic converter.
Measuring sensor: conductivity meter. JUMO.
The pump will feed the alkaline solution into the tank(22m3) and the conductivity in the tank will be controlled in the range 10~15 ms/cm.
Anybody have some experiece for it.
My plan is to control the on-off time(pulse, PID) for the pump in a fixed low speed, but i don't know whether it is allowed that the pump on-off in so short time( approx. 1 min).
Anybody have some suggestions or new idea for the control.
Thanks a lot!