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What is the maximum diameter that a vortex flowmeter can achieve?
The vortex flowmeter can have a maximum diameter of up to DN1000 and a minimum diameter of DN25. It has two specifications: flange connection and insertion, and can also achieve a maximum temperature of 350 ℃. The output methods include pulse output with display and on-site display with 4-20mA. There is also a two-wire system without display, which does not require vertical measurement and only provides temperature compensation or pressure compensation.
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. Ga
4. The extended range ratio of the standard vortex flowmeter is 1:10~1:15, and models using dual sensors or digital signal processing technology can be extended to 1:20~1:30 (such as Emerson high-precision models), but the price is higher. The actual selection should be strictly based on the calculation of medium operating parameters (temperature, pressure, density, viscosity). It is recommended to directly use the selection software provided by the manufacturer or check the latest version of the product manual to obtain accurate data.
3. Selection of Superheated Steam Flow Meter
The selection of superheated steam flow meters should comprehensively consider the pipe diameter, maximum temperature, maximum pressure, flow range, and measurement accuracy. Common types include vortex street, bend pipe, V-cone, and orifice plate. Among them, vortex street and bend pipe are more suitable for high temperature and high pressure scenarios, while orifice plate and V-cone are less commonly used due to accuracy and pressure loss issues.
. The specific selection suggestions
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