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:The counter type: Horizontal.Sealed by special liquid keeping surface clear for long.Low start flow.Fit for low quality water.Outside adjustable copper body. Painted available as demanded.WORKING CONDITION:Water temperature≤45º C(Hot water meter≤90º C)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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