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Regarding the classification of instruments, there are different ways to classify them from various perspectives. Some are classified by structure, some by detection method, and some by purpose; vortex flowmeters are no exception. Below, we will classify vortex flowmeters from different perspectives. I. Classification by connection method Based on the way in which the vortex flow meter is connected to the pipeline, it can be divided into flange-connected type and flange-clamped type. Each of these two connection types has its advantages. In the flange-connected type, the instrument and the connection flange are integrated, which facilitates installation; however, it increases the amount of machining required by the manufacturer. In particular, for different pressure levels, it is necessary to manufacture flanges with varying pressure resistance characteristics through casting processes. The flange-mounted vortex flow meter does not have bulky flanges at both ends, making it relatively lightweight. As long as the sealing surface and mechanical strength meet the requirements, it is sufficient to manufacture only the gauge body without flanges. When in use, users can select flanges of different pressure ratings to connect them, depending on the working pressure. II. Classification by Detection Technology Based on different detection technologies, vortex flowmeters can be divided into thermistive vortex flowmeters, ultrasonic vortex flowmeters, capacitive vortex flowmeters, stress-type vortex flowmeters, strain-type vortex flowmeters, magnetoelectric (vibrating body) vortex flowmeters, photoelectric and fiber-optic vortex flowmeters, as well as vortex flowmeters that utilize other detection technologies. This classification method is currently the one that is most commonly used by manufacturers and users; the name itself reflects the various characteristics of vortex flowmeters. Chapter 5 of this book will introduce the principles and features of these vortex flowmeters respectively. II. Classification by Purpose of Use Based on their different purposes of use, vortex flowmeters can also be divided into explosion-proof vortex flowmeters, high-temperature vortex flowmeters, ultra-low temperature vortex flowmeters, corrosion-resistant vortex flowmeters, insertion-type vortex flowmeters, and mass-type vortex flowmeters. IV. Classification by structural form Based on their structural form, vortex flowmeters can be divided into integrated types and remote transmission types. Among them: Integrated vortex flow meter: Integrates the sensor with the converter (including the flow calculation and display unit) into one unit. A remote-type (or separate-type) vortex flow meter refers to a type in which the sensor of the instrument is separated from the converter, and it is suitable for special operating conditions, such as high-temperature vortex flow meters. V. Classification by instrument function Based on their function, vortex flowmeters can be divided into conventional types and intelligent types. Among them, the intelligent vortex flow meter is a new type of flow meter that has emerged in recent years. Its emergence reflects the rapid development of sensor technology, digital technology, and communication technology. These instruments feature an integrated design; a single unit combines signal detection, signal processing and compensation calculations, display functions, and communication capabilities ； In terms of measurement, multi-parameter detection has been achieved ； In terms of functionality, it possesses various features such as measurement, compensation, calculation, self-diagnosis, management, and communication. Intelligent vortex flowmeters represent the direction of development for measuring instruments. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content! http://www.yb1518.com/UploadFiles/20175239314754.jpg