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:
1.Single jet water meter dry.
2.Wide measuring range, high accuracy.
3.Stable measuring capacity
4.Long working life
5.Low pressure loss
6.All technical figures are conformed with GB/T778.1~3-1996 which is equivalent to ISO4064 Standard Class B.

WORKING CONDITION:
Water temperature≤45º C(Hot water meter≤90º C)
Water pressure≤1Mpa

MAXIMUM 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%. )