Patent ID: 7734441

Claim:
A method for measuring and controlling amounts of liquid and/or electrical energy consumption consumed by an electro pump by a controller, wherein said amount of liquid consumption comprises of flow and/or volume of said liquid that is pumped/transferred by said electro pump, wherein said method comprises: continuously measuring currents and voltages of said electro-pump; continuously calculating, and updating active and reactive energies, instant electrical power, instant power factor and the frequency of said voltages; continuously calculating, and updating the amount of said liquid consumption by said controller wherein said Calculating and updating comprises steps of: taking a flow-power curve of said electro-pump as a first input data; taking an operational condition of the electro-pump as second input data wherein said second input data comprises of instant flow and instant consumed electrical power; calibrating the Flow-Power curve according to said operational condition and obtaining a calibrated flow power curve; obtaining the amount of flow from the calibrated flow power curve of said electro pump by locating the instant power on said calibrated flow power curve; continuously calculating the volume of pumped/transferred liquid by taking time integral of the amount of flow; continuously monitoring, updating, displaying and/or recording the amount of said measured currents and voltages of said electro-pump; continuously monitoring, updating, displaying and/or recording the amount of said calculated active and reactive energies, instant electrical power, instant power factor and the frequency of said voltages; continuously monitoring, updating displaying and/or recording the amount of said energy consumption consumed by said electro pump as an updated amount of electrical energy consumption; and continuously monitoring, updating displaying and/or recording the amount of said liquid consumption as an updated amount of liquid consumption.