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在使用旋杯式和旋桨式流速仪测流时,流速V与仪器转子转率n之间的函数关系为: V=Kn+C……………(1) 式中:V—流速(m/S); K——水力螺距(m); n——转子转率(S~(-1)); C——仪器常数(m/C)。 K值和C值是通过水槽检定得到的。仪器的均方差为:
In the use of spin-cup and propeller-type flow meter when measuring the flow rate V and the instrument rotor speed n as a function of relationship between: V = Kn + C ............... (1) Where: V-flow rate K - hydraulic pitch (m); n - rotor rate (S ~ -1); C - instrument constant (m / C). The K and C values are obtained from the tank test. The mean square deviation of the instrument is: