| 摘要 |
The invention relates to a flow meter, comprising a housing having an inner lateral face, through which housing a liquid or a gas flows, wherein the housing has at least one piezoelectric film for generating electrical energy arranged on the inner lateral face thereof, wherein an electronic circuit is provided with an output device that is connected to the piezoelectric film, wherein a value for the rate of flow, which value is dependent on the electrical energy generated by the piezoelectric film, is specified by the output device. |
