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Evaluation on the Characteristics of Turbine Meter Base on of Reynolds Number |
LI Chun-hui1, LI Peng2 |
1. National Institute of Metrology, Beijing 100029, China;
2. Beijing Institute of Metrology, Beijing 100013, China |
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Abstract Within 0.1~2.5 MPa, the high pressure close loop system with 4 turbine meters as master meters will be finished soon in National Institute of Metrology of China. The test for the turbine meter at 0.1MPa, 2.5 MPa showed that the change of indication error could be exceeded 0.4%, for the same turbine meter at the same flowrate and different pressure. On the base of physical model of turbine meter, the evaluation method for the test results of turbine meter under different pressure with curve fitting by means of Reynolds number were presented, and the uncertainty was no more than 0.3% (k=2). The recalibration results verified the evaluation method and uncertainty at 0.1 MPa.
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