Electromagnetic flowmeter well

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What are the precautions to be taken when installing an electromagnetic flowmeter? The sensor of the electromagnetic flowmeter should be installed vertically, and the fluid should flow from bottom to top to ensure that the solid and liquid phases are in a mixed state. The reason is that solid substances (such as sediment, small stone particles, etc.) in the medium are prone to precipitation. In addition, if there are fish and weeds in the pipeline, the movement of fish in the pipeline will cause the output of the flowmeter to oscillate back and forth; The back and forth swing of weeds hanging near the electrode can also cause unstable output of the flowmeter. Install a metal filter at the upstream inlet of the flowmeter to block fish and weeds from entering the measuring tube. Improper operation of the pipeline setting of the electromagnetic flowmeter to prevent negative pressure will cause negative pressure to be generated inside the sensor. When both the upstream and downstream valves of the flow meter are closed, if the temperature of the flow meter is higher than the air temperature Shrinking after cooling poses a risk of creating negative pressure inside the tube. Negative pressure causes the lining to peel off from the metal conduit, resulting in electrode leakage. Add a negative pressure prevention valve near the electromagnetic flowmeter, open the valve to connect to atmospheric pressure to prevent negative pressure from being generated inside the sensor. When a vertical pipeline is connected downstream of an electromagnetic flowmeter, if the upstream valve of the flow sensor is used to close or adjust the flow rate, negative pressure will be formed inside the sensor measuring pipe. To prevent negative pressure, it is necessary to add back pressure or use downstream valves to regulate and close the flow rate. Adequate maintenance space is required for electromagnetic flow meters. Large caliber flow meters are often installed in instrument wells, and for the convenience of pipeline installation, wiring, inspection, and maintenance, appropriate space needs to be left. For the convenience of observation, wiring, and Pibi maintenance, instrument installation should be at a certain height from the ground for easy cleaning and installation. If you want to learn more about pressure sensors, you can consult Mike Sensor Co., Ltd. Thank you!

2. What is the purpose of an electromagnetic flowmeter?

Electromagnetic flowmeter is an automated measuring instrument for liquid flow measurement. It is mainly used to measure the instantaneous flow rate of fluid media, accumulate the flow rate, and transmit the collected data to the upper computer operating system or automatic control system through communication cables or wireless methods. The system analyzes the measured data to control the fluid in the process pipeline accordingly. The flowmeter is called the eye of industrial automation. Through the flowmeter, real-time data such as flow rate and flow rate of the medium in the fiber optic pipeline can be obtained.. The measurement principle of electromagnetic flowmeter is based on Faradays law of electromagnetic induction. The sensor part consists of a coil, electrodes, and insulation lining. During measurement, the excitation coil in the sensor is energized to generate a magnetic field. When the conductive fluid passes through the magnetic field, a small induced electromotive force is generated due to the cutting force

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