FLUID METER WITH ALTERNATIVE POWER SUPPLY

This fluid meter configured to perform metrological measurements in a fluid circulation pipeline and to communicate information relating to said metrological data, comprises: - a pipeline (2), - at least one metrological sensor (4), - a control unit (6), - a power supply unit (10) configured to power the control unit, the power supply unit comprising a first power supply path (11) comprising at least one battery (12), and a second power supply path (21), and further comprising a first switch (S1) configured to selectively couple the first power supply path (11) or the second power supply path (21) to the control unit, the fluid meter comprising a thermoelectric generator (30) configured to produce electricity from a temperature difference between an exterior of the pipeline and the fluid in the pipeline, the second power supply path (21) being connected to the thermoelectric generator (30).