Magnetic level sensor is a continuous level measuring instrument which uses magnetic coupling principle to display or detect the change of liquid level height in real time. It is widely used in pharmaceutical, electric power, paper making, metallurgy, water treatment, petrochemical, food processing and other fields for liquid level monitoring. However, in some applications with strong magnetic field interference and corrosive environment, the magnetic flap level gauge sometimes can not be used normally, affecting the smooth and normal production of safety, so how to avoid such events has become a top priority in safe production.

I. Application in magnetic interference environment

　　As the magnetic flap level meter is the use of buoyancy and magnetic coupling principle to achieve real-time measurement of the liquid level. Through the principle of linker to make the internal liquid level of the tank and the internal height of the main body of the magnetic flap consistent, and then through the principle of buoyancy to ensure that the position of the magnet in the magnetic float is flush with the liquid level, and finally through the principle of magnetic coupling to drive the magnetic flip-flop on the panel to rotate its color change, so as to indicate the height of the internal liquid level of the tank.

　　The above magnetic level gauge working principle objectively requires that it cannot be used in the environment of strong magnetic interference. Because if there is strong magnetic interference around the magnetic flip flop level meter, it may cause the magnetic flip flop can not be turned properly, and then affect the accurate display of the liquid level. Similarly, in order to avoid the magnetic float floating up and down by the wire or magnetic material, the float of the magnetic level meter should not be installed and fixed by the wire or the magnetic material itself.

Second, the application of corrosive environment

　　Magnetic flap level meter in the application of corrosive chemical environment, mostly through the metal tube inside and magnetic float surface lined with polytetrafluoroethylene (PTFE), the use of polytetrafluoroethylene to be measured in the liquid and the metal tube isolated to achieve the effect of corrosion. PTFE has the advantages of good corrosion resistance and non-adhesion, non-toxicity, etc. It is inert to most chemicals and solvents, resistant to strong acid and alkali, water and various organic solvents. By lining the metal tube with PTFE, not only can ensure that the overall strength of the magnetic type level gauge is not affected, but also to achieve the purpose of anti-corrosion, so this type of anti-corrosion magnetic flap level meter is widely used in the field of corrosion.

Although PTFE has a high melting point and can be used in high temperature conditions up to 250 ℃, but because of its own large expansion coefficient, and with the temperature change is irregular change, if used for a long time in high temperature environment, the inner wall of the pipe is susceptible to deformation, or even magnetic float stuck in the inner wall of the pipe, so it must be used in strict accordance with the scope of the design parameters of the magnetic flap level meter. In terms of material, sometimes considering the site environment has restrictions on the metal tube, and sometimes for product cost considerations, the overall magnetic flap level meter is made of non-metallic materials. In the use of this type of magnetic flap level meter, more should take certain protective measures to prevent its uneven force or other reasons caused by the instrument failure, or even safety accidents.

　　Level measurement is a very important part of modern industrial production, magnetic float type level gauge as a common means of level measurement, favored by the majority of users. kaidi KD series magnetic flap level meter in the absorption of similar products at home and abroad on the basis of excellent design and advanced technology, relying on the independent development of a series of innovative design, production process and testing standards, by focusing on process details, strict control Production process and quality inspection, to overcome the defects and common failures of domestic and foreign counterparts, to ensure that the product has a very high reliability.

　　The above is the introduction of "magnetic flap level meter in magnetic interference and corrosive environment", if you want to know more about level switch (level switch, level switch), level meter (level meter, level meter) and other level measurement instrumentation, welcome to contact us!