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As a new type of device, magnetic flap level gauges are now being used in various fields. In response to this trend, many manufacturers of level gauges have carried out technical improvements and introduced a range of multi-functional products. However, while enjoying the immense convenience that level gauges bring to our production, there are still some unavoidable malfunctions that occur. Below are the methods for troubleshooting common issues with magnetic flap level gauges: First, when a magnetic flap level gauge stops functioning properly, we should start by tapping on the casing to check whether it is intact. If the gauge works fine when tapped once but stops working again upon further tapping, it is best to reseat all connections firmly before trying again. If that still doesn’t work, we’ll have to think of another solution. Analysis can also be carried out using vision, smell, and touch. Sometimes, damaged components will change color, develop bubbles, or show burnt spots; burned-out devices emit a distinct odor; short-circuited chips become hot. Secondly, when the fault cannot be resolved or it is not possible to determine exactly which part is damaged, we can still use diagnostic methods for inspection. Specifically, it is a method of determining the cause of a fault by inserting or removing certain plug-in boards and components inside the machine. When the instrument returns to normal after removing a certain plug-in board or component, it indicates that the fault lies there. Additionally, the substitution method can also be used for exclusion. Two instruments of the same model are required, or there must be sufficient spare parts. Replace a good spare part with the same component on the faulty machine to see if the fault is resolved. How to calibrate a magnetic flap level gauge: When a magnetic flap level gauge gives inaccurate readings, the following symptoms usually occur: First, there is no indication at all ； Second, there are instructions but they are not allowed ； Third, there is suddenly one or more segments in the middle with no indication. The usual solution is to use a magnet to slowly and repeatedly attract the misaligned section; this method can be used when the fault is mild. Be sure to compare it with other level gauges at the same time ； As a precaution, in general the same container will be equipped with two or more level indicators. If that doesn’t work, the level gauge needs to be disassembled; its bottom flange should be removed and the magnet inside it replaced – this usually solves the problem. If it still doesn’t work, it means the magnet has been replaced with a fake one or the level gauge is completely faulty!