How to avoid the surface of the electrode electromagnetic flowmeter scale effect

Abstract: how to avoid the surface of the electrode electromagnetic flowmeter scale effect of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: the electrode surface effect refers to the effect of chemical reaction, electrochemical electrode surface phenomena, polarization potential, and catalytic role in four aspects of electrode. In the use of electromagnetic flowmeter can appear as some conditions, affect the normal use of the user, in this paper. More flow meter manufacturers choose model price quote you are welcome to inquire, here is how to avoid the surface of the electrode electromagnetic flowmeter scale effect article details. Electrode surface effect refers to the effect of chemical reaction, electrochemical electrode surface phenomena, polarization potential, and catalytic role in four aspects of electrode. In use of electromagnetic flowmeter can appear as some conditions, affect the normal use of the user, in this paper, aiming at these problems, with you to discuss how to avoid the above problems. Electromagnetic flowmeter how to avoid the electrode surface effect of so-called electrode surface effect refers to the effect of chemical reaction, electrochemical electrode surface phenomena, polarization potential, and electrode catalysis effect: four aspects: 1, the chemical reaction is refers to the electrode after contact with the measured medium, the electrode surface passivation membrane or oxide layer, the electrode is not corrosion, but the formation of the passivation film or oxide layer increased contact resistance on the surface of the electrode. Cases of tantalum and tantalum is corrosion resistant to water, water for tantalum electrode measuring water flow is wrong, this is because when the water flow measurement, tantalum electrode surface to form insulation block induced voltage relay. 2, electrochemical phenomena: refers to the electrodes in contact with the measured medium, the electrode surface electric potential change. Such as measuring sand containing solid particles or fibers serous fluid flow, solid particles grazed electrode, the electrode is not corroded, but the bump on the surface of electrode contact potential changes suddenly, cause a peak pulse forming interference instrument output signal. Cases of measuring juice, will use the high frequency converter, the polarization potential: refers to the induced electromotive force in the two different electrode polarity, electrode polarization that generates electrolyte on the electrode surface. Early electromagnetic flowmeter using dc excitation electrode polarization phenomenon is serious, now use low frequency square wave excitation, low-frequency rectangular wave excitation is a combination of dc excitation and the advantages of ac excitation, while alternating field weakened the polarization potential for several orders of magnitude, but cannot completely eliminate the influence of polarization potential interference. 4, catalysis: refers to the electrode measured medium under the action of a chemical reaction and impact measurement. Such as platinum electrode electromagnetic flowmeter in the measurement of hydrogen peroxide, the platinum electrode is not corrode, but hydrogen peroxide can produce aerosol in the electrode surface, blocking electrical pathways, lead to the output signal wave. Cases of platinum and platinum hydrogen peroxide of hydrogen peroxide is corrosion resistant, if choose platinum electrode measuring hydrogen peroxide solution flow is wrong, this is because the measurement under low pressure, 0. 3Mpa） The hydrogen peroxide solution, electrode surface will produce aerosol blocking electrical pathways affect the measurement. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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