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Effects of a mismatch between the pipe inner diameter and the vortex flow meter inner diameter: Generally, the inner diameter of imported instruments is manufactured in accordance with foreign standards, while the inner diameter of pipes used in China follows domestic standards; the difference between these two can sometimes be significant. When there is a mismatch between the pipe inner diameter and the flow meter inner diameter, the following situations can occur: When the actual inner diameter of the pipe is greater than that of the instrument, and the difference between them is no more than 3% of the flow meter’s inner diameter, the resulting error is minimal and has no impact on measurement, so no correction is necessary. When the inner diameter of the pipe is smaller than that of the instrument, and the difference between them does not exceed 2% of the instrument’s inner diameter, the resulting error is small and can be compensated by adjusting the instrument’s coefficient. When there is a large difference between the inner diameter of the pipe and that of the instrument, the fluid disturbances caused by this sudden change result in unstable and unreliable measurements by the vortex flow meter; the errors thus incurred cannot be compensated for by adjusting the K coefficient. At this time, it is necessary to install sufficient straight pipe sections with the same inner diameter as that of the flow meter before and after it, or to install a flow field optimization rectifier in front of the flow meter; however, a certain length of straight pipe section is still required even after installing the rectifier. When using vortex flowmeters to measure media at temperatures above 350°C, it is important to note that not every manufacturer is capable of producing vortex flowmeters that perform well in such high-temperature conditions. Another issue is that vortex flowmeters are most sensitive to low flow rates; when the flow rate is too low, no vortices are generated, and the original signal becomes intermittent, which significantly affects the measurement accuracy. Effect of accumulation on the upstream surface of the vortex generator in vortex flow meters: If viscous particles are present in the fluid being measured, they may gradually accumulate on the upstream surface of the vortex generator, altering its geometric shape and size; as a result, the flow coefficient also changes. Therefore, it is important to clean such devices regularly during use. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content! http://www.yb1518.com/UploadFiles/20175239314754.jpg