Abstract: far can instrument for you detail the role of electromagnetic
flow meter scale and structure of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation.
As domestic electromagnetic flowmeter, a senior manufacturer far can instrument detailed breakdown of the intelligent electromagnetic flowmeter for everybody structure and function of intelligent electromagnetic flowmeter is mainly composed of magnetic circuit system, measure the catheter, electrode, the lining and shell and converter and other part of the group.
More flow meter manufacturers choose model price quote you are welcome to inquire, here are far to instrument for you detail the effect of electromagnetic flow meter scale and structure of the article for details.
As domestic electromagnetic flowmeter, a senior manufacturer for detailed breakdown structures and functions of the intelligent electromagnetic flowmeter, the intelligent electromagnetic flowmeter is mainly composed of magnetic circuit system, measure the catheter, electrode, the lining and shell and converter and other parts.
1, the magnetic circuit system used to produce uniform dc or ac magnetic field.
Dc magnetic field can be done with * magnets, its structure is simple.
But, on the electrode of dc potential will cause the electrolysis of measured liquid, and so on the electrode polarization, destroyed the original measurement conditions;
When the pipe diameter is bigger, * magnets, demand is very big, so was bulky and not economic.
So, industrial production using electromagnetic flowmeter, mostly USES the alternating magnetic field, and is with 50 hz power excitation power frequency.
To produce alternating magnetic field excitation coil structure varies according to type of duct diameter, is a kind of concentrated winding structure.
It consists of two series or parallel saddle excitation of group, and each one clamping on the measuring tube.
For the formation of magnetic circuit, reduce the interference and guarantee the uniform magnetic field, dry in outer coil has a layer of silicon steel sheet pile into the yoke.
2, measuring its role is to make the liquid to be tested by catheters.
It ends with the flange so that connected to the pipe.
In order to make the lines of magnetic force by measuring the catheter the eddy current and magnetic flux is not shunt and to reduce catheter must adopt permeability or low electrical conductivity, low thermal conductivity and has certain mechanical strength of materials, generally can choose stainless steel, glass steel, aluminum and other high strength plastic, etc.
3, the effect of electrode is generated when the cutting lines of magnetic force measured medium induction electric potential leads.
In order not to affect the distribution of magnetic flux, avoid the interference, introduced electrode, generally speaking, the permeability of stainless steel electrode.
Electrode for flush with the liner to flow through an unimpeded.
Electrodes of the installation position should be in the horizontal direction of the pipeline, in order to prevent the sediment accumulation in the electrode and the influence degree of measurement.
04, the inside lining in the measuring tube and flange sealing surface, a layer of complete electrical insulating lining.
It measured medium, direct contact with the main effect is to increase the measuring tube wear resistance and corrosion resistance, prevent induction electric potential by metal pipe wall short-circuit measurement.
As a result, the lining must be corrosion resistance, abrasion resistance and ability of high temperature insulation.
5, shell, generally made of ferromagnetic materials, it is to protect the outer garment of excitation coil, and can isolate the interference of external magnetic field.
6, converter induction potential of the fluid flow is very weak, with 50 hz ac power supply, and the influence of various interference agent greatly.
The purpose of the converter is to amplify the induction electric potential and can restrain the third interference signals.
Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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