压力对科里奥利质量流量计检定误差的影响研究

Study on Effect of Pressure on Verification Error of Coriolis Mass Flow Meter

本文通过试验问题及分析认为流体的压力影响了科里奥利质量流量计小流量点检定示值误差,试验验证得出:科里奥利质量流量计在流量满足要求的情况下,流体的压力过小会影响流量计的计量性能,导致流量计示值误差不准,用水为介质检定时,保持流体压力0.3MPa以上时可以较好保证流量计的稳定性,确保检定数据准确。

Through test problems and analysis, the fluid pressure affects the verification error on small flow point of Coriolis mass flow meter. Test validation was obtained when the flow meets the requirements of the Corioli mass f low meter, small f luid pressure will affect the measurement performance of the f low meter, resulting in inaccurate value error;when the water is medium verification, maintaining the f luid pressure of more than 0. 3 MPa can better ensure the stability of the flow meter and the accuracy of the verification data.