The PziA features an integrated, automatic discharge volume control. Special circuitry is built into the unit to allow for on-board calibration of pump flow under actual process conditions. Once calibrated, the pump can be set to a flow rate, or an analog signal can define the flow rate. The pump will then automatically adjust to maintain the precise flow rate, automatically compensating for changes in temperature, pressure or viscosity. Unit includes a flow checker for verification. The Flow Checker is an oval gear meter, which transmits actual flow date to the pump controller. The pump speeds up or slows down as necessary to maintain the required flowrate. The discharge volume during calibration, the instantaneous pump flow rate, or progress during batch operation is displayed on the pump’s backlit LCD display.