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Current application scenarios and selection of electromagnetic flowmeters

2020-05-16 View Original

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The electromagnetic flowmeter is manufactured using modern electromagnetic flow measurement technology, and it possesses the following features: 1. The flow measurement performed by this flowmeter is not affected by changes in the fluid’s density, viscosity, temperature, pressure, or conductivity; 2. Electromagnetic flowmeters have no moving parts that could impede flow within the pipeline, resulting in no pressure loss; they also require relatively short straight sections ; 3. The nominal diameter ranges from DN10 to DN3000, with various options available for sensor linings and electrical materials ; 4. The flowmeter converter can be integrated with the sensor or exist as a separate unit ; 5. The electromagnetic flowmeter converter features a high-performance microprocessor, an LCD display, easy parameter setting, and reliable programming ; 6. In the sensor section, only the lining and the electrode come into contact with the liquid being measured; by selecting appropriate materials for the electrode and the lining, corrosion and wear resistance can be achieved. 7. Electromagnetic flowmeters are used to measure the volumetric flow rate of conductive liquids and slurries in closed pipelines, and are suitable for use in industries such as chemicals, power generation, metallurgy, petroleum, papermaking, pharmaceuticals, and food processing.   When selecting an electromagnetic flowmeter, the fluid to be measured must be a conductive liquid or slurry with a conductivity of at least 5 uS/cm. The fluid should not contain large amounts of ferromagnetic materials or bubbles. It is necessary to choose appropriate parameters such as pressure, lining material, electrical components, and the design of the instrument based on the properties of the fluid to be measured. If the medium being tested contains solid particles, a flow rate range of 1–3 m/s is recommended. If the actual flow rate is too high and it is not possible to make changes, it is possible to choose an instrument with a diameter larger than that of the process pipeline; this allows for a reduction in the flow velocity within the flow meter’s measuring section, thereby reducing the wear caused by particles on the electrodes and the lining. If there are deposits in the process pipeline, a flow rate of 2–5 m/s is recommended. If the actual flow rate is too low and it is not feasible to modify the process pipeline, it is possible to use an instrument with a smaller diameter than that of the process pipeline, thereby increasing the fluid flow rate through the electromagnetic flowmeter and reducing the impact of deposits on the accuracy of the instrument. When the flow rate is too low yet accurate measurement is required, a sensor with a diameter smaller than that of the process pipeline can be used to increase the flow rate, thereby ensuring higher accuracy. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content! http://www.yb1518.com/UploadFiles/2012717174126829.jpg

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