DEFINITION: Set of moving device that fitted into a closed conduit driven directly by water flow. Its turbine rotor rotates about the axis which is perpendicular to water flow.WORKING PRINCIPLES: Water flow drives vane rotate. Rotating times which is proportional to water flow speed are gathered, hence total volume passed through water meter is recorded.CHARACTERS:Types: Wet, dry, vertical, liquid sealed.Wide measuring range, high accuracy.Stable measuring capacityLong working lifeLow pressure lossAll technical figures are conformed with GB/T778.1~3-1996 which is equivalent to ISO4064 Standard Class B.WORKING CONDITION:Water temperature≤ 45ºC(Hot water meter≤ 90ºC)Water pressure≤ 1MpaMAXIMUM PERMISSIBLE ERROR:From the minimum flow-rate (qmin) inclusive to the lower zone of the transitionalflow-rate (qt) exclusive: ± 5%.From the transitional flow-rate (qt) inclusive to the higher zone of the maximum flow-rate (qmax) exclusive: ± 2%(hot water meter± 3%. )
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