The application of electromagnetic flow meter scale characteristic analysis

Abstract: the application of electromagnetic flow meter scale characteristic analysis of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The application of electromagnetic flowmeter characteristic analysis of flow meter is one of the categories of instruments for process automation instrument and apparatus, in the industrial field, measurement of fluid flow or flow meter are collectively referred to as flowmeter, is one of the most important instrument zui in industrial measurement. With the work. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the application of electromagnetic flow meter scale characteristic analysis for details. The application of electromagnetic flowmeter characteristic analysis of flow meter is one of the categories of instruments for process automation instrument and apparatus, in the industrial field, measurement of fluid flow or flow meter are collectively referred to as flowmeter, is one of the most important instrument zui in industrial measurement. Along with the development of the industry, for the flow measurement accuracy and range of demand is higher and higher, in order to adapt to a variety of purposes, various types of flowmeter thereafter, widely used in petroleum, petrochemical industry, water treatment, food and beverage, pharmaceutical, energy, metallurgy, pulp and building materials industries. In process automation instrument and apparatus, flow instrument has two functions: as a process automation control system of the testing instrument and measuring the amount of material quantity table. Electromagnetic flowmeter is widely used in sewage, fluorine chemical industry, production water, tap water industry and medicine, steel, and so on many aspects, because the principle determines it can only measure the conductive liquid, although it in terms of reliability and stability are much better than other kinds of flowmeter, but any kind of product always has its limits, the author made analysis on the advantages and disadvantages of the electromagnetic flowmeter is as follows: advantages: 1, the electromagnetic flowmeter can be used to measure industrial conductive liquid or slurry. 2, no pressure loss. 3, large measuring range, electromagnetic flow meter diameter from 2. 5 to 2 mm. 6ｍ。 4, the electromagnetic flowmeter measurement by flow body volume flow under working state, does not involve the use of fluid in the measuring principle the influence of temperature, pressure, density and viscosity. Disadvantages: 1, the application of electromagnetic flowmeter has certain limitations, it can only measure the conductive medium liquid flow, can't measure the rate of flow of the conductive medium, such as gas and water treatment good heating water. In the high temperature under the condition of the lining should be considered. 2, the electromagnetic flowmeter is determined by measuring the speed of the conductive liquid volume flow of work condition. According to the measurement requirements, for the liquid medium, should measure the mass flow rate, fluid density measurement should involve the medium flow, different media have different density, and temperature changes. Without considering fluid density, electromagnetic flow meter transducer not only gives the volume flow under normal temperature condition is inappropriate. 3, the installation and commissioning of electromagnetic flowmeter than other meter is complex, and more strict. Between the transmitter and transducer must be used, can't use two different types of instrument. When installing a transmitter, from the installation location of choice to a specific installation and debugging, must be strictly carried out in accordance with the product specifications. Installation location cannot have a vibration, cannot have a strong magnetic field. Must make the transmitter when installation and pipe has good contacts and good grounding. Transmitter is potential and current body potential, etc. When use, must be as measurement of gas in the pipe, otherwise it will cause a large measurement error. 4, electromagnetic flow meter used to measure the viscous liquid with dirt, sediment goo or attached on the inner wall of the measuring tube or on the electrode, the transmitter output voltage change, the measurement error, the electrode on the dirt content reaches a certain thickness, could force measuring instrument. 5, water supply pipe scaling or wear change diameter, will influence the original flow value, cause measurement error. Such as 100 mm inner diameter changes of the meter 1 mm will bring about 2% additional error. 6, the transmitter measuring signals for small millivolt level potential, in addition to the traffic signal, mixed some has nothing to do with the traffic signal, as the phase voltage, orthogonal voltage and common-mode voltage, etc. In order to accurately measure flow, must eliminate all kinds of jamming signal, signal amplification flow effectively. Should improve the performance of the flow transducer zui good using microprocessor type converter, use it to control the excitation voltage, according to the current liquid property selected excitation mode and frequency, can be ruled out in phase interference and orthogonal interference. But the improved instrument structure is complex, high cost. Electromagnetic flowmeter in use process should do regular visual inspection, inspection instrument surroundings, remove dirt, ensure no water and other substances, check whether the connection is good, check meter ever new strong electromagnetic field near equipment or have new wire across the instrument. If measured medium easy contamination electrode precipitation, scaling, or within the measuring tube wall cleaning scales, cleaning should be done regularly. （ Zhongke instrument) To learn more product information please see the above is all there is in this article, you are welcome to inquire me factory flowmeter selection, quotation, etc.

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