The reason of electromagnetic flow meter scale fluid noise has the following several ways

Abstract: the electromagnetic flow meter scale fluid noise cause there are several ways of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter flow noise there are some case 1, the causes of the corrosion of the stainless steel electrode is infrared carbon sulfur on the surface passivation layer has a very thin, the electrochemical reaction equilibrium state. Fluid solid impact of electrode, make. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the reason of electromagnetic flow meter scale fluid noise has the following several kinds of details on the article. Electromagnetic flowmeter flow noise there are some case 1, the causes of the corrosion of the stainless steel electrode is infrared carbon sulfur on the surface passivation layer has a very thin, the electrochemical reaction equilibrium state. Fluid solid impact of electrode, electrode surface passivation layer are destroyed, bereft of electrochemical equilibrium. And metal materials in contact with the fluid medium has restored generated surface passivation layer to keep balance of electrochemical power. During the electrochemical equilibrium, free ions in the signal of electric field in the metal and fluid under the action of some electrochemical reaction. Solid particle impact electrode, constantly damage to protect the passivation layer; Electrochemical reaction and generate the passivation layer repeatedly, then formed between the electrode potential dramatically changes continuously, the change of fluid potential cause traffic signal noise. It is also usually speak of slurry noise in the electromagnetic flow meter. The theory and practice show that the higher signal electric field change the frequency of the electrochemical reaction, can make the fluid noise amplitude drops rapidly, this is the high frequency excitation and double-frequency excitation can solve the cause of the size measurement. 2, fluid friction lining and infrared carbon sulfur electrode, the fluid of positive and negative ions from the electrolyte fluid. The lining and the electrode surface is rough, the higher free ion concentration. The electrode signal of the electric field effect, part of the ions will move to the electrode, form the noise voltage, this is called the flow noise. Flow noise when low conductivity measurements appear more prominent. Flow noise is related to the intensity of the electric field, the high velocity when the induction signal, the greater the noise amplitude is, the greater the output will be very unstable. 3, fluid conductivity, and a sharp change of pH will form the flow noise, upstream dosing performance measurement meter instability is a typical example. Reason is the different medium without mixing, fluid, easy to separate the positive and negative ions in the electrode signal of the electric field effect, part of the ions will move to the electrode, formed the flow noise voltage, output instability. 4, due to the high velocity of flow of fluid near the laminar boundary layer thickness of the lining and electrode becomes very thin, lining and electrode roughness height broke through the thickness of the laminar boundary layer flow velocity, and fluid hit this part of the roughness height, velocity divergence and mutation. Some of the same as the measuring tube center axis ( Or the opposite) Velocity component, the signal of the weighting function, the electrode signal has a great influence, formed a large positive error, which is high velocity noise sewage flow meter. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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