Electromagnetic flowmeter is a new flow basin torsion meter developed rapidly in the 1960s with the development of electronic technology. It is made according to Faraday's law of electromagnetic induction and is used to measure the flow volume from the conductive current flow. Due to its unique advantages, it is widely used nowadays. For example, measurement of various acid, child, salt and other corrosion enamel body, a variety of easy, explosive media, various industrial wastewater, pulp, mud and so on. Stand Up Bag Making Machine,Small Plastic Bag Making Machine,Self Stand Bag Making Machine,Plastic Bag Making Machine Fully Automatic Wuxi Shengkun Machinery Co.,Ltd , https://www.skpouchmachine.com
   The main features of electromagnetic flowmeters are:
1 The electromagnetic flowmeter's transmitter is simple in structure, has no moving parts, and does not have any throttling parts that impede the flow of fluid, so it will not cause any additional loss of music when the fluid passes, and it will not cause such as wear and tear. , Clogging, etc. Question VA I is particularly applicable to pulps with Rt solid particles, liquid-solid two-phase fluids such as sewage, and various fragile slurries such as .fol-like, since it has no moving parts in its structure, The electrode can be made by attaching a corrosion-resistant insulating lining and selecting a corrosion-resistant material, which has a good corrosion resistance and can be used for measuring various corrosive media.
2 Electromagnetic flowmeter is a volume flow island instrument. In the process of measurement, it is not affected by the temperature, the degree of crushing, the density, and the conductivity (in a certain range) of the measured medium. Therefore, the electromagnetic flowmeter After being calibrated by water, it can be used to measure the flow of other conductive fluids, without the need for additional amendments.
3 The electromagnetic range of the electromagnetic flowmeter is extremely wide, and the maximum electromagnetic field flow meter can have a ratio of 1:100. In addition, the electromagnetic flowmeter is only proportional to the average flow velocity of the medium to be measured, and is symmetrical to the flow under the axisymmetric distribution. The state (laminar flow or prime flow) is irrelevant.
4 electromagnetic flowmeter without mechanical inertia, responsive, can measure the instantaneous pulsating flow, and good linearity. Therefore, the metering signal can be directly converted into a standard signal output by the converter, which can be indicated locally or remotely.
Although the electromagnetic current meter has the above-mentioned excellent characteristics, it has some disadvantages at present, so that it is limited in use. There are mainly the following points.
1 Electromagnetic current can not be used to record gas, steam, and liquids containing large gas.
2 electromagnetic current M meter can not be used to measure the liquid conductivity medium with very low conductivity, the conductivity string of the liquid medium on the side can not be less than 10-' (S/cm), equivalent to the conductivity of distilled water. Products or organic solvents are still powerless.
3 Due to the temperature limitation of the insulation lining material, the current industrial electromagnetic flowmeter cannot measure the high temperature and high pressure flow.
body. 3 Due to the temperature limitation of the insulation lining material, the current industrial electromagnetic flow meter cannot measure the high temperature and high pressure flow.
4 The electromagnetic flow M. is affected by the flow velocity distribution. Under the conditions of axially symmetrical distribution, the flow basin signal is proportional to the average flow velocity. Therefore, before and after the electromagnetic flowmeter must also have a certain length of straight pipe sections.
5 The electromagnetic flow emblem is susceptible to external electromagnetic interference.
In summary, the electromagnetic flowmeter has many unique advantages, but also has many deficiencies that can not be ignored, in order to understand a deeper understanding of the electromagnetic bleeder of a variety of performance, then, on the electromagnetic flowmeter principle of work, structure, interference The production and anti-jamming measures, and the impact of in-kindness on the site are further discussed.