Product introduction of steam vortex flowmeter

Abstract: The product introduction information of steam vortex flowmeter is provided to you by excellent flowmeter and flowmeter manufacturers. Product introduction of steam vortex flowmeter 1. Product concept: Steam vortex flowmeter is mainly used for flow measurement of steam medium fluid in industrial pipelines. The characteristics of steam vortex flowmeter are small pressure loss, large measuring range and high precision. Measurement conditions. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the product introduction article details of the steam vortex flowmeter. Product introduction of steam vortex flowmeter 1. Product concept: Steam vortex flowmeter is mainly used for flow measurement of steam medium fluid in industrial pipelines. The characteristics of steam vortex flowmeter are small pressure loss, large measuring range and high precision. It is almost not affected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring the volume flow of the working condition. Vortex steam flowmeter is the latest product independently developed by our company. The technology of this steam flowmeter solves the problem that the detection probe body of similar products currently used directly contacts the measured medium. The temperature of the measuring medium is not high and the maintenance is inconvenient. The steam flow sensor also has all the technology, technology and features of the wide range (K) type sensor. It is especially suitable for high temperature fluid medium and occasions where it is impossible to stop production and cut off flow maintenance under normal temperature fluid conditions. It greatly expands the application range of steam flowmeters. The steam vortex flowmeter strictly implements the national industry standard (JB/T9279-1999) and the metrological verification regulations (JJG198-94), providing a new type of steam that meets the professional standards of our country for the current industrial measurement, energy management and engineering design. Vortex flowmeter flow meter. 2. Working principle When a column is vertically inserted into the measuring tube, a regular vortex column will be generated when the fluid passes through the column. This vortex column is called Karman vortex street. The release frequency of the Karman vortex street is related to the flow velocity of the fluid and the width of the column, which can be expressed as f=st*v/d, where f-the release frequency of the Karman vortex street, st-coefficient (called Straw Ha number) v - flow rate, d - the width of the column. The release frequency f of the Karman vortex street is proportional to the flow velocity v. Therefore, by measuring the release frequency of the Karman vortex street, the instantaneous flow rate can be calculated, and then the cumulative flow rate can be obtained through accumulation. The vortex release frequency of the steam vortex flowmeter is detected by the vortex alternating stress acting on the detection sensor (probe) through the piezoelectric element inside it. The Strouhal number is an important coefficient of the vortex flowmeter. In the straight part of the curve st=0.17, the vortex release frequency f is proportional to the flow velocity v, so the flow velocity v can be obtained by measuring the frequency f, The volume flow rate is obtained from v. 3. Functional characteristics of steam vortex flowmeter 1. The sensing element of the sensor is not in direct contact with the measured medium, so the performance is stable and the reliability is high. 2. There are no moving parts in the sensor, and the structure is simple and firm, so the pressure loss is small, the dimension expansion is small, and the service life is long. 3. The range is as wide as 10:1 and 15:1. 4. Flange clamping connection is convenient, simple and easy to operate. 5. Within the specified Reynolds number range, the output signal is not affected by liquid temperature, pressure, viscosity and composition. 6. With strong versatility, it can form a measurement and control system with any flow calculator produced by our factory or some other manufacturers. 7. No self-excitation. Fourth, the technical parameters of the steam vortex flowmeter 1. Measuring medium: steam (superheated, saturated). 2. Measuring range: normal working range, Reynolds number is 20,000-7,000,000; measurement possible range, Reynolds number is 8,000-7,000,000. 3. Accuracy level: the indicated value±1.5%. 4. Repeatability: indicated value≤0.3%. 5. Output signal: a. Three-wire voltage pulse low level: 0-1V; high level: greater than 4V; duty cycle is 50%; b. Two-wire/three-wire current 4-20mA. 6. Power supply voltage: +12VDC (three-wire system); +24VDC (two-wire system/three-wire system). 7. Medium temperature: ordinary type a.40℃～+130℃; b.-10℃～+250℃ high temperature type a.-10℃～+300℃; b.-10℃～+380℃ explosion-proof type a. -40℃～+80℃. 8. Working pressure: 0-2.5Mpa (Note: flowmeters of other pressure levels can be provided upon request of users, which need to be customized). 9. Atmospheric pressure: 86kpa-106kpa. 10. Pressure loss: △P=1.079*ρ*v2 (where: △P: pressure loss kpa;ρ: the density of the measured medium kg/cmз; V: the flow velocity of the measured medium m/s). 11. Shell material: carbon steel; stainless steel (1Cr18Ni9Ti). 12. Specifications (inner diameter of pipes) 20, 25, 32, 40, 50, 65, 80, 125, 150, 200, 250, 300, 350, 400, 500, 600, 700, 800--2100mm. 13. Ambient temperature -25℃～+55℃; humidity≤85%RH. 14. Explosion-proof type: intrinsically safe; explosion-proof mark; iaIIcT6. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Product introduction of steam vortex flowmeter'

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