V cone flowmeter scale product advantages and disadvantages

Abstract: V cone flowmeter scale product advantages and disadvantages of the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Jiangsu embellish instrument specializing in the production of V cone flowmeter, orifice flow meter, power meter, electromagnetic flowmeter, vortex flowmeter, metal rotameter, etc. , products of high precision, good stability, small pressure loss, the choose and buy! What are the advantages and disadvantages of V cone flowmeter? Under. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a scale product advantages and disadvantages of article V cone flowmeter for details. Specializing in the production of V cone flowmeter, orifice flow meter, power meter, electromagnetic flowmeter, vortex flowmeter, metal rotameter, etc. , products of high precision, good stability, small pressure loss, the choose and buy! What are the advantages and disadvantages of V cone flowmeter? Let's tell you. A V cone flowmeter advantages: 1, wide range than V taper zui early factories McCrometer company has carried out a series of test research, draw the conclusion: V cone and orifice plate comparison, V cone of the signal-to-noise ratio is much smaller. V cone due to the smaller signal-to-noise ratio in the small flow measurement, even if the measurement of differential pressure in smaller working conditions can be accurately measured. Thus don't have to be like orifice, need to increase the damping of the transducer to improve the effects of signal noise. Because of this, V cone range than than range ratio of the orifice plate. Indian institute of technology professor S N S ingh respectively using oil and water do the experiment under different Reynolds number, concluded that within a certain range, the outflow coefficient of V cone is almost nothing to do with Reynolds number. The author has participated in hundreds of V cone flowmeter calibration work, you can see from the data, typically in 1. 0 precision range, the use of a single differential pressure transmitter, range can reach 10 V cone. 。 1. 2, low straight section V cone self-rectifying function to the requirements of the straight pipe below the orifice plate. Indian institute of technology professor S N S ingh with oil and water, respectively, in different locations in the upstream resettlement to test different opening of valve, zui after conclusion is: if the upstream of the interference occurred in the upstream of V cone flowmeter 10 d, or more, then the asymmetric velocity distribution does not affect the flow coefficient of the value of outflow coefficient will remain under the ideal condition of the same value; If the location of the upstream from the distance less than 10 d (V cone flowmeter Such as 5 d) , the flow coefficient of zui large variation of 6%. Visible as long as there is 10 V front cone d straight pipe, no matter what is in front of the throttle parts will not affect the measurement. The ISO - In 5167 according to the requirements set out straight section of the orifice throttling has changed a lot of different, generally require at least 20 d. If above test separator gas exports generally USES 4 & quot; Pipeline for V cone, its only 1 m in front of the straight pipe is ok, just behind the 0. 5 m straight pipe. 3, small pressure loss pressure loss is irreversible, it is need to consider one of the important indicators of model selection of the flowmeter. In today's lack of energy, promote energy conservation and emissions reduction of the society, it is particularly important to this parameter. As V cone edge shape decided the flow of the fluid, the pressure loss of the fluid is much less than using orifice pressure loss. And because the V cone self-rectifying function, its front without rectifier, straight pipe orifice requires longer to adjust the flow of the fluid. Offshore oil platform on the space is lesser, treasure land, it is difficult to meet the requirements of straight pipe, it is often necessary to increase the rectifier, to ensure the flow of the medium. But the pressure loss of the rectifier's ills is to consume more energy. Even if you don't consider rectifier, in the same amount of *, V cone pressure loss usually only 1/2 ~ 1/3 of orifice plate. 4 the V cone structure, high precision and no moving parts, making V cone has a good repeatability, generally less than 0. 1%. Because of the wide range than that its good linearity, so that its precision is higher. According to GB17167 - 2006. 。 Energy-using units energy measuring instruments equipped with and management rules. 。 Regulation, used in the measurement of energy meter accuracy level for: coal gas and natural gas of 2. Level 0. So in the test separator outlet gas measurement, at 10. 。 Within the scope of the range of 1, V cone and differential pressure transmitter and the overall error of the second table not less than 1. Level 5, completely can satisfy the measurement requirements. 5, good long-term performance due to the cone shape restrict the flow of the medium, the outline of the fluid along the cone formed the boundary layer, which means that the edge of the cone is not susceptible to not wear clean fluid, so that the opening ratio. 。 Remain the same, make the precision of flowmeter can keep for a long time without having to check. Drawback: 2, V cone flowmeter calibration orifice is * 1, need to by ensuring geometry can ensure the accuracy of measurement of the flowmeter. And V cone belongs to a new type of flowmeter, although many manufacturers and researchers have done a lot of experiments, but so far the V cone flowmeter can be according to the national standard is limited, and because of the limitation of confidentiality and has now been released about V cone flowmeter is relatively lack of structure design of the available literature.

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