| CPC G01F 15/063 (2013.01) [G01F 1/696 (2013.01)] | 9 Claims |

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1. A flow metering system for a fluid dispensing apparatus, the flow metering system operated by a user, the flow metering system having a reservoir and an exit line, the flow metering system comprising:
a flow sensor positioned in an exit passage configured to allow fluid to pass through the flow sensor, the flow sensor configured to measure a volume of fluid exiting the reservoir through the exit line; and
a control module in communication with the flow sensor, the control module configured to accept a user inputter top-level and a user inputted bottom-level, total volume calculated by the control module as the difference between the user inputter top-level and the user inputted bottom-level,
the control module configured to calculate changes in volume in the reservoir using amount of fluid measured by the flow sensor;
wherein if the amount of fluid measured by the flow sensor approaches the user inputted bottom-level, notification is communicated,
wherein a line splitter is provided in line with the exit line, the line splitter positioned upstream of the flow sensor, the line splitter configured to route some liquid to the flow sensor and the remainder out so as to improve efficiency of the system.
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