FLOWMETER

摘要

A flowmeter includes: a flow rate sensor capable of measuring an instantaneous flow rate of a normal flow and an inverse flow; smoothing means for smoothing the measured instantaneous flow rate; an accumulation counter for accumulating and outputting the smoothed flow rate; judging means for monitoring the smoothed flow rate to judge whether the fluid is oscillating; an auxiliary counter for accumulating the smoothed flow rate instead of the accumulation counter while the judging means is making judgment of oscillation and when the fluid is judged to be oscillating; and control means. When the judging means judges that a normal flow is present, the control means adds the accumulated flow rate obtained by the auxiliary counter to the accumulation counter and resumes accumulation of the smoothed flow rate by the accumulation counter.