Electromagnetic flowmeter selection instructions

1. Selection of caliber and range 　　The sensor caliber is usually the same caliber as the piping system. If the piping system needs to be designed, the caliber can be selected according to the flow range and flow rate. For electromagnetic flowmeters, the flow velocity is more suitable to be 2~4m/s. In special cases, such as solid particles in the liquid, considering the abrasion, the usual flow rate ≤ 3m/s can be selected, and for the fluid that is easy to attach to the pipe, the flow rate ≥ 2m/s can be selected. After the flow rate is determined, the sensor caliber can be determined.　　The range of the sensor can be selected according to two principles: one is that the full scale of the instrument is greater than the expected maximum flow value; the other is that the normal flow is greater than 50% of the full scale of the instrument to ensure a certain measurement accuracy. Kaidi electromagnetic flowmeter is used in Changzhou Yistar site 2. Selection of temperature and pressure 　　 The fluid pressure and temperature that can be measured by electromagnetic flowmeter is limited. When selecting, the working pressure must be lower than the specified working pressure of the flowmeter. At present, the working pressure specifications of the electromagnetic flowmeter produced in China are: 　　　　 less than 50mm diameter, working pressure is 1.6MPa; 　　　900mm diameter, working pressure is 1MPa; 　　　　 greater than 1000mm diameter, working pressure is 0.6MPa. 　　　　 depends on the working temperature of the electromagnetic flowmeter. The lining material used is generally -20~60°C. If special treatment is done, the above range can be exceeded, and the sensor allows the temperature of the measured medium to be -20~+160℃. Kaidi electromagnetic flowmeter 3. Selection of lining material and electromagnetic material The lining material and electrode material of the sensor must be correctly selected according to the physical and chemical properties of the medium, otherwise the instrument will be damaged quickly due to the corrosion of the lining and electrode, and it is corrosive Once a very strong medium is leaked, it is easy to cause accidents. Therefore, the electrode and lining materials must be carefully selected according to the specific measurement medium in the production process. Use occasions of Kaidi electromagnetic flowmeter electrode Use occasions of Kaidi electromagnetic flowmeter lining

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