A fluid measurement apparatus capable of accurately determining an
activated appliance is provided. A flow measurement apparatus 100 has a
flow measurement unit 12 that measures an amount of fluid flowing through
a passageway, a determination zone storage unit 16 that allocates and
stores a flow measured by the flow measurement unit 12 into determination
zones classified by combination of a plurality of conditions; a grouping
unit 18 that groups determination zones according to appliances to be
used on the basis of determination-zone-specific storage values stored in
the determination zone storage unit 16 and that registers the grouped
determination zones; and an integration unit 20 that integrates a flow
value for each of the determination zones registered by the grouping unit
18. Thus, a flow is integrated for each determination zone grouped
according to an appliance. An appliance is determined by reference to a
database including the integrated data.