Abstract: Systems and methods for sensing an amount of a liquid in a container are provided. A conduit is provided that has a length positioned relative to a portion of the container where a level of the liquid in the container changes when liquid is added to the container or liquid is removed from the container. The conduit is in fluid communication with the container to therefore allow an amount of the liquid to enter the conduit that is proportional to the amount of the liquid in the container. An outlet is provided along with a valve. The valve is in fluid communication with the conduit and the outlet, where the valve is selectable to allow the amount of liquid in the conduit to pass to the outlet, the amount of liquid passing to the outlet proportional to the amount of liquid in the container.