Vortex flow meter scale working principle and characteristics

Abstract: the working principle of the vortex flow meter scale and characteristics of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Vortex flowmeter is made according to the principle of 'karman vortex' new type of flow measurement instrument. When the stability of fluid flow through a certain length of straight line, the impact of nonlinear cylinder immersed in a fluid, on the downstream side of the fluid will produce whirlpool ( Namely karman vortex. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the working principle of the vortex flow meter scale and feature articles for details. Vortex flowmeter is made according to the principle of 'karman vortex' new type of flow measurement instrument. When the stability of fluid flow through a certain length of straight line, the impact of nonlinear cylinder immersed in a fluid, on the downstream side of the fluid will produce whirlpool ( The karman vortex) 。 When the fluid Reynolds number ( 重新) In a certain range, the occurrence rules of vortex is stable and reliable, the vortex frequency F by the formula: F = ( St * V) Determine which/d, V for velocity; D for the cylinder to meet the flow surface width; St for si, ha. , the number is a dimensionless parameter, the following figure said lo ha several relations with Reynolds number, in a certain range of Reynolds number, number, luo, basically remains the same, so you can think Reynolds number in this range the release of the karman vortex frequency is proportional to the velocity of the fluid. So by the detected frequency F the velocity V can be obtained, and the V volume flow is obtained. Section the characteristics of vortex flowmeter and vortex flowmeter USES a: features: (1) ant-vibration performance is very good, no zero drift, high reliability. Through a long period of time to a large number of vortex street flowmeter waveform analysis and spectrum analysis, plus zui the probe of beautiful shape, wall thickness, height, probe rod diameter and piezoelectric crystal, associated with the use of advanced numerical control lathe processing, to ensure that the processing of coaxial degree and bright and clean degree, technical parameters, such as cooperate with special craft processing, thereby to zui greater level of vortex flowmeter are overcome the influence of the intrinsic self oscillation frequency of the signal of this disease. (2) of the intelligent vortex flowmeter sensor's versatility is very strong, so that the sensor has good compatibility with advanced CNC processing equipment sensor table body and spiral body, etc. , to ensure the machining accuracy, so that the parts ( Especially the spiral body) Strong commonality, thus truly will not affect by parts replacement repeatability and precision of the sensor; Can produce a strong and stable vortex signal. 3. Simple structure, no moving parts, high reliability, convenient in operation and maintenance. Don't contact with the medium (4) measurement, stable performance and long service life sensor detection probe with spiral body separate installation, and high temperature piezoelectric crystal seal in detecting probe, not contact with the measured medium, so vortex flowmeter has the characteristics of simple structure, high universality and high stability. (5) output is proportional to the flow of the pulse signal or analog signal, no zero drift, high precision, convenient and computer networking company with wide measuring range, range than can reach 1 to 7) measurement of volume flow vortex flowmeter without compensation, when the vortex of the output signal is actually with a linear relationship with velocity, namely is proportional to the volume flow. The purpose of the pressure and temperature compensation is to get the fluid density, times get volume flow to mass flow, if the measurement of the volume of a gas flow would be no need for compensation. Today the pressure loss is small. With diameter (vortex street flowmeter measurement of combustible gas flow, if the pipe zui large flow rate Qmax = 200 m3 / h, the sensor of pressure loss is: delta P = 1. 08×10- 6ρv2 ( kPa） = 0. 605 KPa pet-name ruby within a certain range of Reynolds number, flow characteristic from the fluid pressure, the influence of the temperature, viscosity, density, composition, is only involved in the body shape and size of the vortex. Attending a wide scope of application, steam, gas, liquid flow rate can be measured. B: purpose: the meter can be widely used in large, medium and small various water supply and drainage pipe, industrial circulation, sewage treatment, oil and chemical reagents and compressed air, saturation and superheated steam, gas and all kinds of medium flow rate measurement. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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