Abstract: In one embodiment, a liquid dispenser includes a liquid reservoir, a measurement device providing at least one signal indicative of the amount of liquid remaining in the liquid reservoir, an electrically actuated valve coupled to a tube outlet exiting from a bottom of the liquid reservoir, and a processor. The processor is electrically connected to the measurement device and operatively coupled to and controlling operation of the valve. Further, the processor is configured to determine a valve open time for dispensing a requested amount of liquid. The valve open time depends upon a preliminary time based on the requested amount and at least one signal from the measurement device, and an adjustment to the preliminary time based on a difference between a requested amount and a measured amount determined by the measurement device for at least one previous dispense.

Abstract: In one embodiment, a liquid dispenser includes a liquid reservoir, a measurement device providing at least one signal indicative of the amount of liquid remaining in the liquid reservoir, an electrically actuated valve coupled to a tube outlet exiting from a bottom of the liquid reservoir, and a processor. The processor is electrically connected to the measurement device and operatively coupled to and controlling operation of the valve. Further, the processor is configured to determine a valve open time for dispensing a requested amount of liquid. The valve open time depends upon a preliminary time based on the requested amount and at least one signal from the measurement device, and an adjustment to the preliminary time based on a difference between a requested amount and a measured amount determined by the measurement device for at least one previous dispense.

Abstract: In one embodiment, a liquid dispenser includes a liquid reservoir, a load cell supporting at least a partial weight of the liquid reservoir, an electrically actuated valve coupled to a tube outlet exiting from a bottom of the liquid reservoir, and a processor. The processor is electrically connected to the load cell and operatively coupled to and controlling operation of the valve. Further, the processor is configured to determine a valve open time for dispensing a requested amount of liquid. The valve open time depends upon a preliminary time based on the requested amount and an output from the load cell, and an adjustment to the preliminary time based on a difference between a requested amount and a measured amount determined by the load cell for at least one previous dispense.