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Principle of vortex flow meter: Vortex flow meters are primarily used for measuring the flow rate of fluids in industrial pipelines, including various media such as gases, liquids, and vapors. It is characterized by low pressure loss, a wide range of measurement, and high precision. When measuring the volumetric flow rate under operating conditions, it is hardly affected by parameters such as fluid density, pressure, temperature, and viscosity. There are no moving mechanical parts, thus it offers high reliability and requires minimal maintenance. The instrument parameters can remain stable over the long term. This instrument uses piezoelectric stress sensors, ensuring high reliability. It can operate within a working temperature range of -20°C to +250°C. It provides both analog standard signals and digital pulse signals for output, making it easy to use in conjunction with digital systems such as computers. It is a relatively advanced and ideal flow meter. The principle of the vortex flow meter involves placing a triangular prism-shaped vortex generator in a fluid; regular vortices are generated alternately on both sides of this vortex generator. These vortices are known as Karman vortices, and they arrange themselves asymmetrically downstream of the vortex generator. The UHLUGB vortex flow meter measures the flow rate of steam, gases, and low-viscosity liquids, based on the theories of Karman and Strouhal regarding the formation of vortices and their relationship to flow rate. Selection issues for vortex flowmeters: The most important factor in selecting a vortex flowmeter is its performance. First and foremost, one should consider the measurement accuracy; high accuracy is one of the greatest advantages of such instruments, though it often also means a higher price. Making a well-thought-out selection in all aspects can also help save costs and lead to the most satisfactory flow meter. For use in trade settlements and similar scenarios, high-grade instruments such as grade 1.0 or grade 0.5 can be employed ； In situations where precise control and measurement are not required, instruments with lower precision such as grade 2.5 instruments can be used, or even insert-type vortex flow meters can be chosen. In practical applications, the flow measurement range requires that the diameter of the instrument match that of the pipeline; only in this way can it be ensured that the measured flow rate falls within the acceptable range. : Transmitter selection In practical applications, it is generally necessary to ensure that the flow rate of saturated steam being measured is not below the lower limit of the vortex flow meter (5 m/s). The diameter of the transmitter should then be chosen based on the amount of steam required; it cannot be determined based on the diameter of the existing process pipelines. : Display meter selection – Intelligent flow display meter; it features voltage stabilization compensation, real-time flow display, and cumulative flow calculation functions. It is also possible to choose the integrated temperature and pressure compensation option, which can be combined with the fourth option. https://img-blog.csdnimg.cn/20200820142147586.png The technical specifications for vortex flowmeters are as follows: Medium to be measured: gases, steam, water. Diameter (mm): 15–1000 (insert type is used for diameters greater than 300). Nominal pressure: 1.6–6.4 MPa (orders for pressures above 6.4 MPa require special arrangements). Medium temperature: -20°C to 250°C or 350°C. Ambient temperature: -40°C to 55°C. Accuracy: 1.5%. Compensation methods: temperature compensation, pressure compensation (for gas measurement). Requirements for straight pipe sections: 5D in front and 3D behind; the exact requirements depend on the installation location. Repeatability: 0.01%–0.008%. Power supply: 24 VDC or built-in 3.6 V voltage. Total power consumption: ≤1.5 W when using an external power source ； Internal power supply ≤ 1.5 mW; output type: 4–20 mA (two-wire) ； 0~5V (pulse) ； Material of RS485 measurement tube: 304, 316L or customizable according to user requirements. Protection level: IP65