Vortex flowmeter measuring range analysis, accurate flow control丨Hesheng Measurement and Control

Project Overview

Vortex flowmeter is a commonly used flow measurement instruments, with high precision, good stability, flexible use, simple structure, easy maintenance and other advantages, is widely used in industry, chemical industry, electronics, petroleum, shipping, electric power and many other industries. Users in the use of vortex flowmeter for its measurement range are required to understand, Qingdao and Sheng measurement and control to give you a brief introduction to the vortex flowmeter measurement range:

(A) industrial water: vortex flowmeter can be used to measure the flow of various industrial water, the water may come from the chemical industry, light industry, electric power, metallurgy, building materials, petroleum and other industries, for the production process of recycled water, wastewater, waste liquids and so on. Full-pipe vortex flowmeter is mainly used for flow measurement of small and medium pipe diameters, while insertion vortex flowmeter can be used for flow measurement of large pipe diameters (DN≥300mm). This makes the vortex flowmeter in the city water pipeline and chemical industry, electric power, metallurgy, papermaking, chemical fiber and other enterprises in the industrial water main line has been widely used.

(B) corrosive liquids: for some corrosive liquids, such as sulfuric acid, hydrochloric acid, nitric acid, acetic acid and other acids, as well as a variety of chemical solutions, vortex flowmeter can also be accurate measurement. In recent years, small pipe diameter (DN ≤ 25mm) vortex flowmeter is more suitable for corrosive liquid measurement, these flowmeters use molding process, the sensor is an all-plastic product, and configure the non-contact ultrasonic detection element, to achieve the non-contact measurement of the liquid.

(C) non-conductive liquids: in the conductive liquid flow measurement, electromagnetic flowmeter dominates, but in the non-conductive liquid flow measurement, vortex flowmeter has a significant advantage. For example, the semiconductor industry in the pure water and ultra-clean pure water.

(D) oil: vortex flowmeter can be used for part of the low-viscosity oil flow measurement, such as gasoline, kerosene, diesel fuel, as well as by heating the viscosity reduction of heavy oil, residual oil and so on.

Vortex flowmeter is also suitable for flow measurement of gases, including air, oxygen, nitrogen, coal gas, natural gas, chemical gases and so on. However, for gas measurements, the technical parameters (e.g., accuracy ratings) of vortex flowmeters may differ from those for liquid measurements. Remote compensated vortex flowmeters are mainly used for the measurement of saturated steam in the pressure or temperature individually compensated mode.

It should be noted that the measurement range of vortex flowmeters, although wide, is limited by a number of factors. For example, the Reynolds number Re must meet more than 10,000, the medium flow rate can not be too low, in order to prevent the vortex strength is not enough to make the sensing element has a corresponding response. At the same time, the vortex frequency will affect the signal processing, sensor response frequency and circuit frequency will affect the lower limit of the measurement range. Therefore, in the design and use of vortex flowmeter, the fluid flow rate must be accounted for.

Site environmental conditions such as temperature, humidity and electromagnetic field interference may also have an impact on the measurement accuracy of vortex flowmeter. So in the selection of flowmeter models, these factors should be considered to ensure the accuracy and reliability of the measurement results. For more flow measurement problems, please consult Qingdao He Sheng Measurement and Control.