Electromagnetic flow meter scale measurement precision impact analysis

Abstract: the electromagnetic flow meter scale measurement precision impact analysis information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Weinan and shunda manufacturer produces electromagnetic flowmeter is based on Faraday's law of electromagnetic induction and the design of a kind of flow measurement instrumentation. According to the principle of measurement of the electromagnetic flowmeter, the flow measurement is not affected by changes in the fluid density, such as temperature, pressure, and measure the chosen. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a scale electromagnetic flowmeter measurement precision influence analysis for details. Factory production of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction and the design of a kind of flow measurement instrument. According to the principle of measurement of the electromagnetic flowmeter, the flow measurement is not affected by changes in the fluid density, such as temperature, pressure, and high measurement precision, pipe unimpeded flow components, minimal pressure loss. These characteristics make electromagnetic flowmeter in statutory metrology and has been widely used in various types of production enterprises. Technology small make up today for everyone to analyze the factors influencing the electromagnetic flowmeter measurement precision have? Factors that affect the battery meter measurement analysis: 1. The influence of the conductivity of the use of electromagnetic flowmeter premise is liquid to be tested must be electrically conductive and conductivity cannot be lower than the lower limit value. Conductivity is lower than the lower limit value can produce measurement error cause can't use, universal threshold of electromagnetic flowmeter in ( 5× 10 - 6 ~ 1报; 10 - 4) S/cm between, depending on the model. Electrical conductivity of the fluid to the converter should be the size of the input impedance. Fluid conductivity is reduced, the output of the electrode impedance will increase, and caused by the converter input impedance load effect and produce error. 2. The influence of the temperature of the liquid according to the principle of electromagnetic flowmeter, electromagnetic flowmeter is generally thought that measurement is not affected by temperature, but we found that in the process of the actual verification of electromagnetic flowmeter measurement is affected by a certain temperature. Some hot water flow standard device, usually by electromagnetic flow meter as a standard table, the requirements of the temperature range for normal temperature to 85 ℃. Found in the experiment verification, when the temperature is above 80 ℃, because the effects, such as lining of slight deformation measurement data with more than 1% of the change, the influence on high precision electromagnetic flowmeter is not to be ignored. 3. Installation way the influence of electromagnetic flowmeter for fluid in a state of full package, and the velocity of uniform distribution. If the flow velocity on central axis symmetry, induction electric potential is proportional to the average flow velocity. If uneven flow velocity, flow each particle's position relative to the electrode geometry is different, have different size of the induced electromotive force on the electrode, the closer the electrodes, the bigger the induction electromotive force is generated by the speed of particles, easy to cause error. Order to ensure the uniform velocity, need at least before the battery meter straight pipe is greater than or equal to 10 pipe diameters of straight pipe after 5 times greater than or equal to the length of the pipe diameter. Electromagnetic flowmeter must be reliable grounding method at the same time, or vulnerable to fluctuations in value, etc. 4. Running environment influence the induced voltage generated in the electromagnetic flowmeter is low, vulnerable to the outside world the influence of electromagnetic interference, so the installation should be as much as possible to avoid vibration source, magnetic source, and reliable grounding connection. In general, requires grounding resistance less than 10 ohms. And the installation of lightning protection requirements for explosion-proof products, grounding resistance should be less than 10 ohms. At the same time should pay attention to the flowmeter can not be grounded in large electrical equipment, such as transformer, generator, grounding on the exterior of the variable frequency power supply. Flow meter manufacturer with many years engaged in the flow meter automation professional technical talent and rich experience in after-sales service, to provide users with design, production, installation, debugging, the entire journey service, people-oriented, wholeheartedly for the customer service is the principle of flow meter. Manufacturer for many years operating objective is: quality *, the good faith management, door-to-door service is a shortcut to our communication with the customers, quality excellence, customer satisfaction. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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