How to solve the problem of electromagnetic flow meter measuring liquid with larger bubbles

Abstract: The information on how to solve the problem of measuring liquids with large bubbles by electromagnetic flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. [Introduction] Electromagnetic flowmeter is a commonly used flow meter in industrial measurement. Because of its wide application, customers often raise problems encountered during use. Here we will talk about the solution of the large bubbles in the fluid when the electromagnetic flowmeter measures the liquid. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details of how to solve the problem of measuring liquids with large bubbles by electromagnetic flowmeters. [Introduction] Electromagnetic flowmeter is a commonly used flow meter in industrial measurement. Because of its wide application, customers often raise problems encountered during use. Here we will talk about the solution to the large bubbles in the fluid when the electromagnetic flowmeter is measuring liquid. Some customers mentioned why electromagnetic flowmeters are equipped with linings, and we will answer this question from the principle of electromagnetic flowmeters. There will be many bubbles in the electromagnetic flowmeter during the measurement of the liquid, which often leads to errors in the measurement of the flowmeter and affects the use. Generally, the fluid measured by the electromagnetic flowmeter will contain some bubbles, and if these bubbles are evenly distributed, it will not affect the measurement, but once the bubbles become larger, the entire electrode can be covered when rubbing the electrode, so that the flow rate is reduced. The signal input circuit is momentarily open, causing the output signal to vibrate. How to judge whether the measurement error of the electromagnetic flowmeter is caused by the presence of air bubbles in the measured liquid? How to deal with this situation? Let's briefly introduce it. When the measurement result shakes, immediately cut off the excitation circuit current of the magnetic field. If the meter still displays and is unstable at this time, it means that it is mostly caused by the influence of bubbles. After it is determined that a large number of air bubbles affect the measurement results of the electromagnetic flowmeter, a relevant solution should be found. If it is judged that a large number of air bubbles are integrated into the liquid caused by the installation position, for example, the electromagnetic flowmeter is installed at the high point of the pipe system to store gas or inhale from the outside world. If the air causes the flowmeter to shake, changing the installation position is the most effective solution. However, in many applications, the diameter is large or the installation position is not easy to change. It is recommended to install a gas collecting bag and an exhaust valve upstream of the electromagnetic flowmeter to remove excess gas. , reduce the influencing factors on the measurement results and ensure the accuracy of the measurement. As to why the electromagnetic flowmeter is lined, it starts with the principle of the electromagnetic flowmeter. The electromagnetic flowmeter generally has a set of coils and two electrodes. The function of the coil is to add an electric field to the fluid, and the flowing conductive liquid is equivalent to a conductor. According to Faraday's law of electromagnetic induction, when the conductor cuts the magnetic field line, a corresponding electric field is generated proportional to the speed. The function of the electrode is to measure the induced electromotive force, so only the electrode in the measuring tube is connected to the conductive liquid, and the other parts are lined. To ensure insulation, the electromagnetic flowmeter can work normally. If the metal pipe with the magnetic field is also in contact with the liquid, there will be a short circuit between the conductive liquid measured by the electromagnetic flowmeter and the metal pipe, and there will be conduction, which will lead to the electric potential and make the electromagnetic flowmeter unable to measure the electric potential. Therefore, the interior of the electromagnetic flowmeter is lined. When measuring the flow rate, the conductive liquid flows through the magnetic field perpendicular to the flow direction at a speed V, the flow of the conductive liquid induces a voltage proportional to the average flow rate, and the induced voltage signal passes through two or more than two and the liquid directly The contacted electrodes are picked up and sent to the converter through the cable for intelligent processing, and then LCD display or converted into standard signal 4-20ma and 0-1khz output. In this way, the electromagnetic flowmeter can measure the flow of the conductive fluid. Electromagnetic flowmeters can only measure the flow of conductive liquids, so they must be lined inside. 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 solve the problem of electromagnetic flow meter measuring liquid with larger bubbles'

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