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| Pressure Lose of the Diverging and Converging Pipe Equipped |
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| If the velocity of measuring pipe is low, please install diverging / converging pipe (as figure shown below) and select electromagnetic flowmeter with small size to meet flow velocity. |
Total pressure lose ΔP
＠P=ΔP1+ΔP2+ΔP3=ρ/2[(ζ1+ζ2)V22+ζ3V21]Pa
Thereinto:
ρ----Density, kg/m3
ΔΡ1, ΔΡ2, ΔΡ3----Pressure lose of converging pipe, transducer,
diverging pipe, Pa
ζ1, ζ3----Resistance factor of converging pipe and diverging pipe
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ζ2 ----------- --- Resistance force factor of transducer, normal is 0.02
V1,V2----Velocity of pipe and transducer, m/s
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