Measurement Accuracy of Vortex Flow Meters

Abstract: The measurement accuracy information of the vortex flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. The measurement accuracy of the vortex flowmeter The meter coefficient of the vortex flowmeter is not affected by the physical properties of the measuring medium, which is a great advantage. It can be calibrated with a typical medium and applied to other media, which is useful for solving the problem of calibration equipment. Provide convenience. But it should. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the measurement accuracy of the vortex flowmeter. The measurement accuracy of the vortex flowmeter The meter coefficient of the vortex flowmeter is not affected by the physical properties of the measuring medium, which is a great advantage. It can be calibrated with a typical medium and applied to other media, which is useful for solving the problem of calibration equipment. Provide convenience. However, it should be seen that due to the large difference in the flow rate range of liquid and gas, the frequency range is also very different. In the amplifier circuit processing the vortex signal, the passband of the filter is different, and the circuit parameters are also different. Therefore, the same circuit parameters cannot be used for different measurement media. When the medium changes, the circuit parameters should also change accordingly. The accuracy of a vortex flowmeter for liquids is approximately±0.5%R～±2%R for gas at±l%R～±2%R, repeatability is generally 0.2% to 0.5%. Because the meter coefficient of the vortex flowmeter is low, the frequency resolution is low, and the larger the diameter, the lower the diameter, so the diameter of the meter should not be too large (below DN300). The wide range is the characteristic of the vortex flowmeter, but the important thing is how much the lower limit flow rate is. Generally, the lower limit of the average flow velocity of liquid is 0.5m/s, and that of gas is 4-5m/s. The normal flow rate of the vortex flowmeter is preferably 1/2 to 2/3 of the normal measurement range. In addition, the densities of gases and liquids are very different, and the strength of the signal generated when the vortex separates is proportional to the density. Therefore, the signal strength is also very different, the gain and trigger sensitivity of the liquid and gas amplifier circuits are different, the piezoelectric charge is different, and the parameters of the charge amplifier are also different. Even if the same gas (or liquid, steam) varies with the medium pressure, temperature, density, and flow range used, the signal strength is also different, and the circuit parameters also need to be changed. Therefore, it is not feasible to change the medium used or change the diameter of the meter without modifying the hardware or software for a Beijing Jingbo Zhicheng vortex flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Measurement Accuracy of Vortex Flow Meters'

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