The accuracy of vortex flowmeter and vortex street flowmeter is affected by various factors. Generally speaking, it is not easy to determine which one has higher accuracy. The following is a specific situation analysis:
1.The vortex precession flowmeter : The general accuracy level can reach ± 1.0% FS and ± 1.5% FS. Some high-performance the vortex precession flowmeter s can achieve a liquid accuracy of up to ± 0.5%.
2.Vortex street flowmeter: The common measurement accuracy is generally ± 1.0 level, ± 1.5 level, and ± 2.5 level. Some high-performance vortex street flowmeters can achieve an accuracy of ± 0.5% of the measured value.
In practical applications, the accuracy of the two flow meters will also be affected by the following factors:
1.Fluid characteristics: For the vortex precession flowmeters, changes in fluid viscosity, density, and other factors have a relatively small impact on their accuracy, making them suitable for fluid media with high viscosity, high solid content, and high gas content. Vortex street flowmeter can generally work normally when measuring fluids containing impurities, dust, and particulate matter, but at low flow rates, it is greatly affected by fluid characteristics and the measurement accuracy will be reduced.
2.Installation conditions: The vortex precession flowmeter requires a relatively short straight pipe section, generally 3D in the front and 1D in the back (D is the pipe diameter). Vortex street flowmeters usually require a certain length of upstream and downstream straight pipe sections to ensure stable fluid flow. If the installation does not meet the requirements, the measurement accuracy of both will be affected.
3.Environmental factors: Strong electromagnetic interference, vibration, and other environmental factors may cause certain interference to the vortex precession flowmeter , affecting its accuracy. The vortex street flowmeter adopts a new type of signal processing amplifier and unique filtering technology, which can effectively eliminate interference signals caused by pressure fluctuations and pipeline vibrations to a certain extent.
We specialize in producing electromagnetic flowmeter, vortex street flowmeter, turbine flowmeter, thermal gas mass flowmeter, metal tube rotameter, orifice flowlmeter, ultrasonic flowmeter, verabar flowmeter, target type flowmeter, magnetic level indicator, differential pressure transmitter, etc.
