Compare the advantages and disadvantages of vortex flowmeters and differential pressure flowmeters

Abstract: Comparing the advantages and disadvantages of vortex flowmeter and differential pressure flowmeter information is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. (1) Advantages of vortex flowmeter Compared with throttling differential pressure flowmeter, vortex flowmeter has the following advantages. ① The structure is simple, firm, and easy to install and maintain. There is no need for pressure guiding pipes and three-valve groups, etc., which reduces leakage, blockage and freezing. ② High accuracy, one. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is a detailed article comparing the advantages and disadvantages of vortex flowmeters and differential pressure flowmeters. (1) Advantages of vortex flowmeter Compared with throttling differential pressure flowmeter, vortex flowmeter has the following advantages. ① The structure is simple, firm, and easy to install and maintain. There is no need for pressure guiding pipes and three-valve groups, etc., which reduces leakage, blockage and freezing. ② The accuracy is high, generally±(1～1.5)%R. ③ The measurement range is wide, the caliber is reasonably determined, and the range can reach 20:1. ④ The pressure loss is small, about 1/4 to 1/2 of the throttle type differential pressure flowmeter. ⑤ Output pulse signal proportional to flow rate without zero drift. ⑥ Within a certain range of Reynolds number, the output frequency is not affected by the physical properties (density, viscosity) and composition of the fluid, that is, the instrument coefficient is only related to the shape and size of the vortex generator and the pipeline. (2) Limitations of vortex flowmeter ① It is sensitive to the mechanical vibration of the pipeline and should not be used in places with strong vibration. ② The larger the diameter, the lower the resolution. Generally, the flowmeter is used below DN400 when the pipe is full. ③ When the fluid temperature is too high, the sensor still has difficulty. Generally, the fluid temperature is less than or equal to 420℃. ④ When the fluid has pressure pulsation or flow pulsation, the indication value is greatly high, which has a great influence, so it is not suitable for pulsating flow. (3) Advantages of throttle differential pressure flowmeter ① The standard orifice structure in throttle differential pressure flowmeter is easy to copy, simple and firm, stable and reliable performance, and low price. It can be used without live flow calibration, which is rare in flow meters. ② Wide range of applications. It is not only suitable for all single-phase fluids, but also can measure some mixed-phase flows, such as gas-solid, vapor-liquid, solid-liquid, etc. ③ Suitable for high temperature and high pressure, large diameter and small flow. ④ It is not sensitive to vibration and has excellent anti-interference ability. (4) Limitations of Throttled Differential Pressure Flowmeter ① The measurement accuracy is at a medium level among flowmeters. Due to the intricate influence of many factors, it is difficult to improve the accuracy. ② The range is narrow. Since the instrument signal (differential pressure) and the flow rate are in a square relationship, the general range is only 3:1 to 4:1. ③ The requirements for on-site installation conditions are relatively high. If a long straight pipe section (referring to orifice plate, nozzle) is required, it is generally difficult to meet. ④ The pressure-inducing pipeline between the throttling device and the differential pressure display instrument is a weak link, which is prone to leakage, blockage, freezing, signal distortion and other faults. The integrated throttling differential pressure flowmeter developed in recent years, although there is still a pressure-inducing pipeline, but the length is less than 1m, thus reducing the defects in this aspect. ⑤ Large pressure loss (referring to orifice plate and nozzle). The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Comparing the Advantages and Disadvantages of Vortex Flow Meters and Differential Pressure Flow Meters'

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