... in China.Main Technical Parameter (K/b)NSpeed Formula: V = ————— + C/a(m/s)( Automatic calculation) K/b ,C/a are constants ... . After measuring the velocity, the flow can be get: Q=V•S(S is sectional area)Velocity MeasurementWhen measuring velocity, the spin paddle ... Precision: Formula average variance m≤±1.2% When V<0.2m/s, relative error δ≤±5% Signal Frequency: Two signals every time Continuous ...