How to Effectively Ensure the Measurement Accuracy of Electromagnetic Liquid Flow Meters

Abstract: The information on how to effectively ensure the measurement accuracy of the electromagnetic liquid flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. As a liquid flow test instrument, electromagnetic flowmeter is very important to ensure its measurement accuracy. In order to effectively ensure the measurement accuracy of the liquid flowmeter, we need to pay attention to the following points: 1. The AC potential measured by the electrode of the liquid flowmeter is the flow rate. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to effectively ensure the measurement accuracy of electromagnetic liquid flowmeters. As a liquid flow test instrument, electromagnetic flowmeter is very important to ensure its measurement accuracy. In order to effectively ensure the measurement accuracy of the liquid flowmeter, we need to pay attention to the following points: 1. The AC potential measured by the electrodes of the liquid flowmeter is based on the liquid potential in the flowmeter. In order to stabilize the liquid potential and keep the equal potential between the flowmeter and the fluid to ensure stable measurement, the flowmeter casing and both ends of the metal pipe should be well grounded, and the converter casing should also be grounded. 2. In order to ensure that the measuring tube of the flowmeter is filled with the measured medium, the flowmeter should preferably be installed vertically with the flow direction from bottom to top. Especially for liquid-solid two-phase flow, it must be installed vertically. If only horizontal installation is allowed on site, it must be ensured that the two electrodes are on the same horizontal plane. 3. The installation site of the liquid flow meter should avoid strong AC and DC magnetic fields and vibration, the ambient temperature is -20 ~ 50 ℃, does not contain corrosive gas, and the relative humidity is not more than 80%. 4. In order to avoid the influence of the relative measurement of flow velocity, the flow regulating valve should be set downstream of the flow meter. For small-diameter flowmeters, since the distance from the center of the electrode to the inlet end of the flowmeter is equivalent to several times the length of the diameter D, the upstream straight pipe may not be specified. However, for flowmeters with larger diameters, there should generally be a straight pipe section above 5D in the upstream, and generally no straight pipe section is required in the downstream. 5. The flow meter should be installed in a dry and ventilated place indoors. Should not be subjected to strong vibration, try to avoid equipment with strong magnetic fields, such as large motors, transformers, etc., and the installation site should be easy to repair, which is the environmental condition to ensure the normal operation of the flowmeter. 6. To avoid interfering signals, the signal between the flowmeter and the converter must be transmitted with shielded wires. It is not allowed to place signal cables and power cables in parallel in the same cable tube. Pay attention to the content mentioned above and take effective measures to avoid it, which can ensure the measurement accuracy of the liquid electromagnetic flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to Effectively Ensure the Measurement Accuracy of Electromagnetic Liquid Flow Meters'

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