| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas meter eliminating a flow rate conversion processing at a controller side by mounting the function of the flow rate conversion processing on a flow rate sensor itself, and allowing connection without changing the processing in the controller even with the flow sensor having a different gas flow sensing element. SOLUTION: At the sensor side, the gas flow sensing element senses the gas flow to output a pulse train signal; an actual flow rate conversion processing part counts the number of pulses of the pulse train signal in a certain period of time; a corresponding actual flow rate value is obtained with reference to the conversion data in a conversion data storing part, and is outputted to the gas meter controller. At the gas meter controller side, the actual flow rate value outputted by the flow sensor is integrated and a gas metering value is calculated and indicated. When a flow rate sensor is newly mounted or exchanged, a setting device is connected to a communication processing part before or after connection with the gas meter controller, and the conversion data corresponding to the gas flow sensing element of the flow rate sensor is registered.
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