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What is an ultrasonic flow meter and is it easy to use compared to a traditional flow meter? Posted by : admin / Posted on : Feb 22, 2020

When an ultrasonic wave propagates in a flowing fluid, it carries information about the velocity of the fluid. Therefore, the flow velocity of the fluid can be detected by the received ultrasonic wave, and then converted into a flow rate. According to the detection method, it can be divided into different types of ultrasonic flowmeters such as the propagation speed difference method, Doppler method, beam shift method, noise method and related methods. Ultrasonic flowmeter is a non-contact instrument that has been applied with the rapid development of integrated circuit technology in the past ten years. It is suitable for measuring fluids that are not easy to contact and observe, as well as large pipe flow. It is linked with the water level gauge to measure the flow of open water. The use of ultrasonic flow rate is not an ideal energy-saving flow meter because it does not change the flow state of the fluid and does not generate additional resistance. The installation and maintenance of the instrument can not affect the operation of the production pipeline.
As we all know, the current industrial flow measurement generally has problems of large pipe diameter and large flow measurement. This is because the general flow meter will cause difficulties in manufacturing and transportation with the increase of the measurement pipe diameter, increase the cost, and increase the energy loss. Large, installation not only these disadvantages, ultrasonic flowmeters can be avoided. Because all types of ultrasonic flowmeters can be installed outside the pipe and non-contact flow measurement, the cost of the instrument is basically independent of the size of the pipe being measured, while other types of flowmeters have a large increase in cost as the diameter increases. The flowmeter has a better price / performance ratio than other types of flowmeters with the same function. It is considered to be a good instrument for measuring large-diameter flow. The Doppler ultrasonic flowmeter can measure the flow of dual-phase medium, so it can be used for the measurement of sewage and sewage. In power plants, portable ultrasonic flowmeters are used to measure large pipe diameters, such as water intake of turbines and circulating water of turbines, which is much more convenient than the traditional tube peeling flowmeter. Ultrasonic flow-through juice can also be used for gas measurement. The applicable range of pipe diameter is from 2cm to 5m, and it can be used from a few meters wide open channel and underdrain to 500m wide river.
In addition, the accuracy of flow measurement of ultrasonic measuring instruments is hardly affected by parameters such as temperature, pressure, viscosity, and density of the fluid being measured. It can also be made into non-contact and portable measuring instruments, so it can solve the problems that other types of instruments are difficult to measure. Flow measurement of corrosive, non-conductive, radioactive and flammable and explosive media. In addition, in view of the characteristics of non-contact measurement, and equipped with reasonable electronic circuits, one instrument can be adapted to a variety of pipe diameter measurement and a variety of flow range measurement. The adaptability of ultrasonic flow meters is also unmatched by other instruments. The ultrasonic flowmeter has some of the advantages mentioned above, so it has been increasingly valued and developed towards product series and generalization. Now it has been made into standard, high temperature, explosion-proof, and wet-type meters with different channels to adapt to different media. Measurements of occasions and different pipeline conditions.