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In many chemical production processes, level gauges are one of the most commonly used field instruments. Magnetic float level gauges are widely used in oil refining and chemical processing plants due to their many advantages, such as low cost, wide measurement range, clear indication, high pressure rating, and good safety performance. However, if the magnetic float level gauge suffers from unstable performance of the magnets, its magnetism weakens after being used for some time, and the magnetic connection between the magnet in the float and the small magnets in the indicator is lost. As a result, the indicator is unable to follow the magnetic field and loses its function of indicating levels. The varying degrees of weakening in the magnetism of the various small magnets in the indicator cause magnetic interference (also known as screen distortion), which was a major reason for such interference in early magnetic float level gauges. In recent years, thanks to technological advancements in some capable and quality-focused instrument manufacturers, the magnetism of magnetic materials has been enhanced and their magnetic stability has improved. As a result of these factors, the phenomenon of \"unstable magnetism\" has decreased, while another, less noticeable issue has come to light. When using a conventional magnetic float level gauge to measure the level of volatile liquefied hydrocarbon fluids, in a stable state, the gas phase and liquid phase of the fluid under measurement reach equilibrium through mutual conversion. At this time, if liquid is drawn out from the storage tank, the space above the liquid surface increases and the pressure of the gas phase decreases; as a result, some of the liquid vaporizes. A large number of bubbles are generated in this area. As these small bubbles rise, they merge into larger bubbles. When these larger bubbles enter the measurement chamber of a conventional magnetic float level gauge, they can create an ascending gas phase section. As this gas phase section rises and encounters the float, the gas tries to pass around the float. Meanwhile, if the float moves too quickly, it loses its magnetic connection with the indicator outside the measurement chamber, resulting in a phenomenon known as \"magnetic chaos\". Furthermore, in normally operating closed pipelines, for various reasons, many bubbles of different sizes may be mixed in a certain liquid phase; in severe cases, even \"gas layers\" can form. The presence of gas bubbles mixed in these liquid phases varies depending on the conditions during production. If the relative position between the feed line of a device equipped with a conventional float level gauge and the level gauge itself allows bubbles to enter the gauge, then when liquid containing gas bubbles enters this device, those gas bubbles will make their way into the measuring chamber of the float level gauge. If small, dispersed bubbles enter, the density of the fluid inside the measuring chamber changes, which in turn affects the buoyant force acting on the float; as a result, the position of the float changes, and the level reading indicated by the float level gauge may experience errors, either larger or smaller. In other words, this situation interferes with the proper functioning of the float level gauge. If large bubbles or a significant amount of gas enters the measuring chamber, it can also cause the same type of disturbance as described earlier when liquefied hydrocarbons are present. The phenomena that cause conventional magnetic float level gauges to fail to function properly are all due to the impact of air mixed within the liquid medium being measured by the gauge on the gauge itself. To enable magnetic float level gauges to work correctly, it is necessary to modify them so that they can withstand such impacts. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content!