PCT50Level Control Didactic Equipment School Laboratory Equipment Educational Process Control Trainer DESCRIPTION PCT50 is a highly visible and easy to understand water level control process. It comprises two clear acrylic tanks; a process tank mounted above a sump tank. Water is pumped up to the process tank and drains back to the sump tank via two valves, one manually variable and the other switched by software. Each valve can also be fitted with different sized external orifices to change their characteristics. This flexible arrangement allows a wide range of control scenarios to be set up, including two fundamentally different processes, i.e. Level control by proportionally varying pump speed (Inflow control) Level control by time-proportioned opening of a solenoid valve (Outflow control) When using inflow control, repeatable disturbances can be implemented using the solenoid valve, and varied by using different orifice sizes. When using outflow control the pump speed can be stepped to provide a full range of repeatable disturbances. These techniques allow direct comparison of different controller settings.
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