The reasons for the fluid noise of electromagnetic flowmeters are as follows:

Abstract: The reasons for the fluid noise of electromagnetic flowmeters are as follows. The information is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. The reasons for the fluid noise of the electromagnetic flowmeter are as follows: 1. The corrosion resistance of the stainless steel electrode is that the infrared carbon-sulfur meter has a very thin passivation layer on its surface, which makes the electrochemical reaction reach an equilibrium state. Solids in the fluid strike the electrodes, causing the . More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the reasons for the fluid noise of electromagnetic flowmeters. There are the following articles for details. The reasons for the fluid noise of the electromagnetic flowmeter are as follows: 1. The corrosion resistance of the stainless steel electrode is that the infrared carbon-sulfur meter has a very thin passivation layer on its surface, which makes the electrochemical reaction reach an equilibrium state. The solid in the fluid hits the electrode, which destroys the passivation layer on the surface of the electrode and loses the electrochemical balance. The metal material in contact with the fluid medium has the ability to restore the surface passivation layer to maintain the electrochemical balance. During the electrochemical equilibrium period, the free ions in the metal and the fluid continuously undergo electrochemical reactions under the action of the signal electric field. The solid particles hit the electrodes, constantly destroying the protective passivation layer; the electrochemical reaction repeatedly generates the passivation layer, so that the potential between the electrodes changes continuously and greatly, and this changing potential causes fluid noise in the flow signal. This situation is also known as slurry noise in electromagnetic flowmeters. Theory and practice show that the increase of the frequency that affects the change of the electric field of the electrochemical reaction signal can rapidly decrease the fluid noise amplitude, which is why high-frequency excitation and dual-frequency excitation can solve the measurement of slurry. 2. Fluid friction lining and electrode infrared carbon sulfur meter, the positive and negative ions generated in the fluid are separated from the electrolyte fluid. The rougher the lining and electrode surface, the higher the free ion concentration. Under the action of the electric field of the electrode signal, a part of the ions will move to the electrode to form a noise voltage, which is called flow noise. Flow noise is more prominent in low conductivity measurements. The flow noise is related to the strength of the external electric field. The larger the induction signal at high flow rate, the larger the noise amplitude, and the output will be very unstable. 3. The rapid change of fluid conductivity and pH value will also form flow noise, and the measurement instability of the upstream dosing performance of the flowmeter is a typical example. The reason is that when different media are mixed unevenly, positive and negative ions are easily separated in the fluid. Under the action of the electrode signal electric field, some ions will move to the electrode, forming a flow noise voltage, resulting in unstable output. 4. Since the thickness of the laminar boundary layer of the high-velocity fluid near the lining and the electrode becomes very thin, the roughness height of the lining and the electrode breaks through the thickness of the laminar boundary layer of the flow velocity, and the fluid hits this part of the roughness height, and the flow velocity occurs. Divergence and mutation. There is a part of the flow velocity component in the same (or opposite) direction as the central axis of the measuring tube, which is affected by the signal weight function and has a great impact on the electrode signal, forming a large positive error, which is the high-end flow velocity noise sewage flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'The causes of fluid noise in electromagnetic flowmeters are as follows'
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