Reasons and solutions for the failure of the magnetic flap liquid level gauge

The structure of the magnetic flap level gauge is mainly a mechanical component. The main components are: panel, conduit, float, flange, valve, and remote transmission. The magnetic flap level gauge belongs to the amount used in the level measurement of tank operations. One of the largest instrument types. However, due to improper installation, non-standard operation, wrong type selection or problems in the quality of the instrument itself, the instrument fails to measure after a period of use, and it is impossible to verify the existence of the real liquid level. 1. The service life of the instrument is too long, the flap cannot be turned over with the rise of the liquid level, and the liquid level cannot be observed outside the container. Reason analysis: This phenomenon is usually due to the poor performance selection of the permanent magnet in the float in the magnetic flap level gauge. After a long time of use, the magnetism of the magnet has declined, and the magnetic flap cannot be driven to turn over; or Due to the change of production conditions, the original instrument selection is not suitable for the current working conditions, especially the influence of temperature has caused the magnetic float of the magnetic float to decline. Treatment method: replace the accessories to meet the requirements of the new working conditions, or re-select the instrument to meet the requirements of the new working conditions. 2. The magnetic flap liquid level meter was working normally before. When the meter is put into use again after regular maintenance, the displayed liquid level is quite different from the actual liquid level in the container; Cause analysis: The reasons for these two phenomena are generally due to the wrong direction of the magnetic float when it is put back into the main measuring cylinder after the instrument is maintained. The end with the magnet should be turned upwards; The phenomenon of turning over is mainly caused by the reversed order of opening the upper and lower valves when they are put into use again, so that the medium in the main measuring cylinder rises too fast. Treatment method: The flipping of the surface flap cannot keep up with the rising speed of the magnetic float. The upper cut-off valve should be opened first, and then the lower cut-off valve should be opened slowly to make the liquid level rise slowly. If this has ever happened, a magnet should be used to straighten the flaps below the liquid level externally. Phenomenon 3. As the liquid level rises, the liquid level indication is always at zero. Cause analysis: The reason for this phenomenon is generally that the magnetic float is corroded, causing leakage and sinking to the bottom, or because the density of the float does not match the density of the medium, the magnetic float cannot float. Treatment method: Reuse corrosion-resistant materials to make the magnetic float, and make the density of the magnetic float match the density of the measured medium. Phenomenon 4. As the liquid level rises, the flip of the display panel of the magnetic flap liquid level gauge turns from red to white, and as the liquid level drops, the flip turns from white to red; or whether the liquid level rises or falls , the flips are flipped 360°, and the color of the flips will not change. Reason analysis: The reason for this phenomenon is generally due to the user replacing the original magnetic float. The magnetic float of the replaced magnetic float is opposite to the original one and does not match the original system, and users often miss these because they do not understand. details; or the inner magnet structure of the replaced magnetic float is different from the original magnetic float, resulting in a 360° flip of the flip, which does not match the system. Treatment method: Replace the magnetic float that matches the system. In addition to the magnetic flap level gauge, the externally mounted liquid level gauge is also a commonly used liquid level instrument. The externally mounted liquid level gauge can measure the liquid level in the closed container without contact outside the tank. The probe is attached to the bottom of the container to be tested, and there is no need to open holes in the container to be tested. Take measurements.

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