The treatment method of the electromagnetic flow meter measuring the bubbles in the liquid

Abstract: The information on the processing method of the electromagnetic flowmeter measuring the bubbles contained in the liquid is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Electromagnetic flowmeter measures the processing method of bubbles in liquid Causes of formation: The formation of bubble-like gas in liquid has two ways: suction from the outside world and the transformation of dissolved gas (air) in the liquid into free bubbles. If the liquid contains larger air bubbles, it is due to rubbing. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details of the treatment method of the electromagnetic flowmeter measuring liquid containing air bubbles. Electromagnetic flowmeter measures the causes of the treatment method containing bubbles in the liquid: the formation of bubble-like gas in the liquid has two ways: inhalation from the outside world and the transformation of dissolved gas (air) in the liquid into free bubbles. If the liquid contains large air bubbles, the entire electrode can be covered by wiping the electrode, which will make the input circuit of the flow signal open instantaneously, causing the output signal to shake. Judgment method: The simplest judgment method is to cut off the excitation circuit current of the magnetic field when it encounters shaking. If the instrument still displays and is unstable at this time, it means that it is mostly caused by the influence of bubbles. If the electrode resistance is measured with a pointer type multimeter at this time, the loop resistance of the electrode can be measured to be higher than normal, but the test needs to rely on the long-term accumulated test experience and data of professionals. Figure 1 Solution for changing the installation position: For the case where the measured medium contains air, if it is judged to be caused by the installation position, such as the electromagnetic flowmeter is installed at the high point of the piping system and the gas is trapped or the flowmeter shakes due to the inhalation of air from the outside world , changing the installation position is the most thorough solution, as shown in Figure 1, at the lowest point of the pipeline or using U-shaped pipe installation. 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 flowmeter, as shown in Figure 2. For a DN2200 caliber electromagnetic flowmeter, the display shaking caused by air bubbles can reach 20-50%. After the exhaust device is installed, the measurement returns to normal. Figure 2 Electromagnetic flowmeter with exhaust device installed The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'The Treatment Method of Measuring Liquid Containing Air Bubbles by Electromagnetic Flow Meter'

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