Importance

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Abstract

A remaining amount detection apparatus detects a remaining amount of a beverage in a beverage barrel connected to a beverage server. The remaining amount detection apparatus includes a pressure sensor configured to detect a pressure in a channel for supplying a carbon dioxide gas to the beverage barrel, and a controller configured to obtain the remaining amount of the beverage based on a change of a detected pressure that is the pressure detected by the pressure sensor. The controller obtains the remaining amount based on a time ti between a first time tt1 at which a decrease amount of the detected pressure is larger than a first reference value R1 and a second time tt2 at which after the first time tt1, an increase amount from a minimum value Pmin after the detected pressure takes the minimum value Pmin is larger than a second reference value R2.

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First Claim