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What is the measurement range of DN65 vortex flowmeter? The measurement range of DN65 vortex flowmeter varies depending on the specific model and manufacturer, usually ranging from 0.1 to 100m ³/h. Vortex flowmeter is a commonly used flow measurement instrument, and its measurement principle is based on the Karman vortex principle. In a fluid pipeline, when the fluid passes through a vortex flowmeter, the Karman vortex phenomenon occurs in the vortex inside the vortex flowmeter, generating a vortex signal. The frequency of the vortex signal is directly proportional to the flow rate of the fluid, so the flow rate of the fluid can be determined by measuring the frequency of the vortex signal. For the DN65 vortex flowmeter, its measurement range is affected by various factors, including the structural design, manufacturing process, fluid properties, pipeline conditions, etc. of the vortex flowmeter. The measurement range of DN65 vortex flowmeters from different models and manufacturers may vary. In practical applications, it is necessary to select the appropriate DN65 vortex flowmeter model and measurement range based on specific backup measurement requirements and fluid properties. At the same time, attention should be paid to the installation and usage conditions of the vortex flowmeter to ensure the accuracy and reliability of the measurement results. In summary, the measurement range of DN65 vortex flowmeter varies depending on the specific model and manufacturer, and it is necessary to choose the appropriate model and measurement range according to actual needs and fluid properties. During the use of nuclear rolling delay, it is also necessary to pay attention to the installation and usage conditions of the vortex 
2. Flow range of vortex flowmeter
The flow range of vortex flowmeter is mainly determined by the sensor diameter and fluid properties. The larger the diameter, the wider the measurable flow range.
. The conventional liquid measurement range is between 0.5m/s and 7m/s flow rate, and the gas measurement range is between 5m/s and 60m/s. 1. Correspondence between caliber and flow rate (under normal temperature water conditions) The flow range is directly related to the instrument caliber, and the following are typical parameters (referring to the product manuals of mainstream domestic manufacturers such as Chuanyi and Ganges in 2023): • DN15: minimum about 1.2 m ³/h, maximum about 15 m ³/h • DN25: minimum about 3 m ³/h, maximum about 40 m ³/h • DN50: minimum about 10 m ³/h, maximum about 150 m ³/h • DN100: minimum about 40 m ³/h, maximum about 650 m ³/h • DN200: minimum about 150 m ³/h, maximum about 2500 m ³/h • DN300: minimum about 300 m ³/h, maximum about 5500 m ³/h. 2. Influence of fluid medium • Liquid measurement (Water, oil, etc.): The flow rate range is usually 0.5-7 m/s, and liquids with viscosity higher than 30cP will significantly increase the measurement lower limit. Gas measurement (air search, steam, etc.): The flow rate range is usually 5-60 m/s, and low-pressure gases may have an increased lower limit flow rate due to low density. • Steam measurement: It is necessary to distinguish between saturated steam and superheated steam, and the flow range should be calculated based on temperature and pressure compensation to determine the actual mass flow rate. Avoid long-term use below the lower limit of 20%, otherwise the
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