| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid feed device which can meter a liquid flow rate at a low cost. SOLUTION: The liquid feed device comprises a container storing a liquid, a pressurization means to discharge the liquid from the container by pressurizing the inside of the container, a liquid flow path connected to the container through which the liquid passes, a spouting means to spout the liquid passing through the liquid flow path, a pressure gauge provided in the liquid flow path, and a flow rate calculating means to calculate a liquid flow rate from the difference between a pressure value in non-feeding state and a pressure value in feeding state through the liquid flow path which are measured by the pressure gauge. COPYRIGHT: (C)2010,JPO&INPIT
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