| 摘要 |
A turbine meter (20) for measuring the volume of fluid flowing through a conduit includes an elongated housing (22) having an upstream end and a downstream end and a rotor (38) mounted within the housing. A plurality of turbine blades (40) are mounted on the rotor at an angle with respect to the axis of rotation of the rotor which causes each of the rotor blades to have a high pressure surface (60) which faces the upstream end of the housing. Each of the rotor blades also has a trailing edge (66) closest to the downstream end of the housing. An extension (68) is included at the trailing edge on th e high pressure surface of each rotor blade, causing the percentage of error o f the accuracy of the meter across a chosen operating range to be within predetermined limits.
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