Pump Controller with Level Transmitter Control Pumps in Wastewater Lift Stations
Lift stations are used to transmit wastewater to the treatment facility. Wastewater is transmitted by gravity feed so it has to be continually elevated to provide height to generate the flow. Lift stations are pits located at points in the wastewater system to collect the wastewater that usually have two submersible pumps. Wastewater in the lift station is pumped out to a higher level from where it can flow on to the next lift station or to the treatment facility. The Series MPC pump controller is used with the Series PBLT2/PBLTX level transmitter to control the level in the lift station. The PBLT2/PBLTX is a level transmitter that is submersed in the tank and sends a linear output of the height of wastewater above it. The MPC takes the height input and controls the pumps according to how it has been programmed. For a lift station, the primary pump comes on when the tank hits a high level and turns off when the level decreases to the set low level. The second pump is used if the first pump cannot drain the station and comes on at a set higher level above pump. High and low level alarms, submersible pump seal failure indication, pump over temperature protection, and pump alteration all are built into the MPC.