Coriolis mass flow meter is a multi-parameter mechanical vibration type intelligent flow measuring instrument. It can also directly measure the mass flow, density, and temperature of the fluid at the same time, and based on the above measured mass flow and The density parameter can derive the volume flow of the fluid.1 The working principle of Coriolis mass flowmeter Coriolis mass flowmeter uses the phase difference of the vibration frequency of the two halves of the measuring tube (also known as the vibrating tube) to measure the mass flow in proportion to the mass flow rate, and uses the resonance frequency of the measuring tube and the tube The functional relationship between the density of the measured medium is used to obtain the density. Coriolis mass flow meters can also derive volume flow qv from the two basic parameters mass flow qm and density ρ.2 Factors affecting the practical accuracy of the Coriolis mass flowmeter Coriolis mass flowmeter is an electromagnetically driven mechanical vibration type flow measuring instrument. The material constituting the flowmeter measuring tube will be affected by the pressure and temperature of the process medium. Influence. The flow measuring tube (also called flow vibrating tube) installed in the pipeline will be affected by the mechanical vibration, mechanical stress, and mechanical torsion of the factory pipeline. In addition, the error characteristic of the Coriolis mass flowmeter itself presents a “trumpet” instead of a flat straight line with different flow rates. In view of the above reasons, measures to improve the practical accuracy of Coriolis mass flow meters.Conclusion In conclusion, in order to achieve the high accuracy of the actual use of Coriolis mass flowmeters, the selection, standard, installation, and commissioning of the flowmeter should be interlocked, paying attention to the process control of each link, and grasping every step. The key points and details of each link. If all the tasks required in all links of this article can be completed without compromise, the ultimate goal of realizing the high accuracy of the actual use of Coriolis mass flowmeter will be achieved.
Post time: 21-09-21