Design of flow meter

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What parameters generally need to be set for electromagnetic flow meters? The parameters that electromagnetic flow meters generally need to set include range, caliber, damping time, instrument coefficient, output frequency, and current output mode. The diameter of the transmitter is usually chosen to be the same as that of the pipeline system. If the distribution system needs to be designed, Xincongzhi can choose the diameter based on the range and flow velocity of the manifold. For electromagnetic flow meters, a flow rate of 2-4m/s is more suitable. In special circumstances If there are solid particles in the liquid, considering the wear situation, the commonly used flow velocity can be ≤ 3m/s. For fluids that are prone to adhering to the pipe wall, the flow velocity can be ≤ 2m/s. After the flow velocity is determined, the transmitter diameter can be determined according to the needs. The range of the transmitter can be selected based on two principles: one is that the instruments full range is greater than the expected maximum flow value, and the other is that the normal flow value is greater than 50% of the instruments full range to ensure a certain measurement accuracy. Additional Information: Precautions for Using Electromagnetic Flowmeters

1. Accuracy Level and Function: Choose the instrument accuracy level based on measurement requirements and usage scenarios to achieve cost-effectiveness. For example, in situations such as trade settlement, product handover, and energy measurement, higher accuracy levels such as 1.0, 0.5, or higher should be selected; For process control applications, choose different accuracy levels according to control requirements; In some cases where only the process flow rate need

s to be detected without accurate control and measurement, a slightly lower accuracy level, such as 1.5, 2.5, or even 4.0, can be selected. In this case, a low-cost plug-in electromagnetic flowmeter can be used.

2、 When measuring medium flow rate, instrument range, and caliber, the full flow rate of an electromagnetic flowmeter can be selected within the range of 0.5-12m/s for measuring medium flow rate, which is relatively wide. The selection of instrument specifications (diameter) may not necessarily be the same as the process pipeline, and should be determined based on whether the measured flow range is within the range of flow rate slip. That is, when the pipeline flow rate is too low to meet the requirements of the flow instrument or the measurement accuracy cannot be guaranteed at this flow rate, the instrument diameter needs to be reduced in order to increase the flow rate inside the pipeline and obtain satisfactory measurement results.

3、 Try to avoid ferromagnetic objects and equipment with strong electromagnetic fields as much as possible to prevent the magnetic field from affecting the working magnetic field and flow signal of the sensor.

4、 It should be installed in a dry and ventilated place as much as possible, avoiding direct sunlight and rain. The ambient temperature should be between -20 and+60 ℃, and the relative humidity should be less than 85%.

5、 There should be ample space around the flowmeter for easy detection and maintenance. Reference source: Baidu Baike - Electromagnetic Flow Meter

2. What are the types of mass flow meters

3. What is the relationship between the dual tube design of Coriolis flow meters and phase difference

The dual tube design o

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