Contrast scale vortex street flowmeter and the advantages and disadvantages of differential pressure type flow meter scale

Abstract: the contrast scale vortex street flowmeter and the advantages and disadvantages of differential pressure flowmeter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. ( 1) Vortex street flowmeter advantages compared with the throttle differential pressure flowmeter, vortex flowmeter has the following advantages. (1) simple structure, strong, easy installation and maintenance. Without guide tube and three valve group and so on, reduce the leakage and blockage and freezing, etc. (2) the accuracy is higher, a. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the contrast scale vortex street flowmeter and the advantages and disadvantages of differential pressure flowmeter scale article details. ( 1) Vortex street flowmeter advantages compared with the throttle differential pressure flowmeter, vortex flowmeter has the following advantages. (1) simple structure, strong, easy installation and maintenance. Without guide tube and three valve group and so on, reduce the leakage and blockage and freezing, etc. (2) the accuracy is higher, is commonly & plusmn; （ 1 ~ 1. 5) % R。 (3) wide measuring range, reasonable size, range of degree of those days. (4) and small pressure loss, about 1/4 to 1/2 of the throttle differential pressure flowmeter. (5) output is proportional to the flow of the pulse signal, no zero drift. Those within a certain Reynolds number, the output frequency is not affected by the fluid properties ( The density, viscosity) And the influence of the composition, that is, the instrument coefficient only with vortex in body shape and size of the pipeline and associated. （ 2) The limitations of vortex flowmeter are (1) are sensitive to pipe mechanical vibration, should not be used for strong vibration. (2) the larger the diameter, the lower resolution, full pipe flow meter used in DN400 commonly the following. (3) when the fluid temperature is too high, sensor and difficulty, fluid temperature of 420 ℃ or less commonly. (4) when the fluid pressure pulsation or flow pulsation, sharply higher value, the influence is bigger, so do not apply to the pulsating flow. （ 3) Advantages of throttle differential pressure flowmeter (1) the throttle differential pressure flowmeter in the standard orifice plate structure easy to copy, simple and firm, stable and reliable performance, low prices. No real flow calibration can be used, this is one of the few in the flowmeter. (2) the wide range of application. Applies to all of the single phase fluid, can also be partially miscible flow measurement, such as gas-solid, vapor liquid, solid and liquid, etc. (3), but also fit for high temperature and high pressure, large diameter and small flow rate. (4) is not sensitive to vibration, special anti-jamming capability is superior. （ 4) Throttle differential pressure flowmeter measurement accuracy in the flowmeter limitations (1) belong to medium level. Due to the influence of many factors is complex, precision is difficult to improve. (2) the degree of narrow, due to the instrument signal ( Differential pressure) Relation with flow for square, general scope only 3:1 ~ 4:1. (3) installation conditions demand is higher, if you need a long straight section ( Refers to the orifice, nozzle) , in general, it is hard to meet. (4) between the throttle device and the differential display instrument pressure pipeline for the weak link, easy to produce leaks, plug and freeze, fault signal distortion, etc. Zui, in recent years developed a size throttle differential pressure flowmeter, although there is still pressure pipeline, but less than 1 m in length, and thus reduce the defects in this field. (5) large pressure loss ( Refers to the orifice, nozzle) 。 Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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