Vortex flowmeter manufacturers supply analysis how to easily select models!

Vortex flowmeter manufacturers supply analysis how to easily select models! The following matters need to be paid attention to in the selection of vortex flowmeter: 1. The following working parameters must be determined, such as: fluid name, composition, maximum, commonly used and minimum flow under working conditions; maximum, commonly used and minimum working pressure and working temperature and density; viscosity of medium in working state; output signal requirements of flowmeter; protection level of flowmeter; material requirements of flowmeter body. 2. Selection of caliber, the caliber of the flowmeter is mainly to calculate the lower limit, upper limit, and flow rate. It should meet the following conditions: the minimum Reynolds number should not be lower than the limit Reynolds number (Recu003d20000). For the flowmeter at the lower limit flow rate The vortex strength should be greater than the allowable value of the vortex strength of the flowmeter sensor (the vortex strength is proportional to the lift pU2); the Reynolds number of the upper flow limit cannot exceed Recu003d7*106 (if the upper limit is determined from the flow rate. In general, the fluid flow rate does not exceed Liquid is 7m/s, gas is 35m/s, steam is 70m/s); for liquid, it should also be checked whether the minimum working pressure is higher than the saturated vapor pressure at the working temperature, that is, cavitation occurs. Of course, the determination of the flow measurement range should also check whether it is in the best working range of the flowmeter. 3. Set according to the customer's requirements for the output signal of the flowmeter. There may be different requirements and different choices. At present, the main output signals mainly include three-wire voltage pulse signal, 4-20mA current signal, RS485 communication or other communication methods. 4. According to the customer's requirements for the explosion-proof grade, choose according to the installation environment required by the customer. For more information about flowmeters, please pay attention to Industrial Control Instrument Co., Ltd.

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