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A few the causes of errors cause electromagnetic flow meter scale

by:Sincerity Group     2021-07-28
Abstract: several lead to the causes of errors electromagnetic flowmeter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter has many advantages, but improper selection, installation and use, will cause the error increases, the value is not stable, even damage of the table body. The following will introduce you to the flowmeter errors for several reasons: ( 1) The solid liquid in the liquid. More flow meter manufacturers choose model price quote you are welcome to inquire, here are a few the causes of errors cause electromagnetic flowmeter scale article details. Electromagnetic flowmeter has many advantages, but improper selection, installation and use, will cause the error increases, the value is not stable, even damage of the table body. The following will introduce you several reasons of flowmeter errors: ( 1) In the liquid to liquid containing solid powder, particles or fibers such as solid, possible fault; 1) slurry noise; (2) electrode surface defiled; (3) insulation sediments or sedimentary cover or lining electrode; (4) the lining by wear or by sediments, narrow flow cross-section. ( 2) Possible crystallization liquid, electromagnetic flowmeter should be careful with some easy crystallization chemical material in normal under the condition of normal temperature measurements, as a result of the transmission fluid conduit has good thermal insulation, insulation in work when not crystallization, but difficult to implement electromagnetic flow sensor measurement of tube, thermal insulation, therefore, when the fluid flows through the measuring tube is caused by cooling wall in a layer of solids. Due to switch to other principle of crystallization of the flowmeter measurement also exists, so in the case of no other better way, can choose a kind of measuring tube length is very short & other Ring & throughout; ( oring) Electromagnetic flowmeter sensor, and the flow meter of upstream pipe thermal insulation shall be strengthened. On the pipeline connection methods, considering flow sensor tear open outfit is convenient, when once the crystallization can easily remove the maintenance. ( 3) Liquid not filled because of a shortage of back pressure or flow sensor installation location, leading to the measuring tube filled with liquid to level of failure phenomenon due to not full and flow conditions have different performance. If a small amount of gas in pipe duct in stratified flow and wave flow, fault phenomenon characterized by error increases, the flow measurement values do not tally with the actual value; If flow is the flow of air bubbles or plug flow, fault phenomenon in addition to the measured values do not tally with the actual value, will be output by gas phase instantaneous covered electrode surface rock; If the gas phase stratified flow in horizontal pipeline flow cross-section part increases, the liquid under the degree of pipe increases, also can appear the output, if the liquid under line situation is serious, so that the electrode surface is below the output will appear super full phenomenon. ( 4) Electrodes and the problems caused by improper grounding ring material selection for material and does not match the measured medium caused failure of electromagnetic flowmeter with parts in contact with the medium and grounding electrode ring, matching misconduct in addition to the corrosion problem, as long as it is electrode surface effect. Surface effect should be: (1) chemical reaction ( Membrane surface blunt words, etc. ) ; (2) and electrochemical polarization ( Produce potential) ; (3) catalysis ( Electrode surface generating aerosol, etc. ) 。 Grounding ring also have these effects, but the influence degree. ( 5) Problems caused by liquid conductivity exceed the permitted range liquid conductivity if close to lower limit is also likely to be shaking phenomenon. Because the factory instrument specifications ( 规范) Lower limit value is used in a variety of conditions prescribed by the better condition can be detected in low zui, and the actual conditions can't all very ideal, so he repeatedly encountered low distilled water or deionized water and its conductivity is close to the rules and regulations of electromagnetic flowmeter the lower limit of 5, when using, output the shaking. Is generally thought that can measure the conductivity of the stable under the limit is 1 ~ 2 orders of magnitude higher. It is very important to maintain the electromagnetic flowmeter, on the one hand, can prolong the service life of it, on the other hand can ensure the normal use of it, not because the maintenance is not in place and affect its use. This kind of flowmeter are generally measure the liquid medium, gas medium, the medium will be more or less there are some chemical composition, if not can become has certain corrosion flowmeter, therefore, the maintenance work is an unavoidable. Regular maintenance, can let the electromagnetic flow meter long time measurement service for the people. In the process of maintenance, as long as be seriously, carefully. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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