FLOW MEASURING METHOD AND FLOW MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a fluid flow measuring method and a flow measuring device capable of obtaining an accurate gas flow value without mixing the error caused by the pulsation of a fluid such as gas in a flow value and capable of being continuously used over a long period without increasing power consumption. SOLUTION: A start phase control circuit 5 has time intervals Td between measuring periods T and changes the cycle or phase of the start timing of the measuring periods T differently from the cycle or phase of the pulsation measured by a pulsation measuring circuit 6 based on the predetermined regularity.