Does the magnetic flap level gauge have any measurement blind spots?

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This post was last edited by tiandiyi*an on 2018-4-12 at 14:47. The measurement range of a magnetic flap level gauge is the distance between the centers of the two flanges; the distance from the upper flange to the top of the tank and from the lower flange to the bottom of the tank constitute what are known as blind zones. However, if these distances are known, then there are no blind zones. It can be calculated when designing the tank. Such an installation structure is caused by the working principle of the magnetic flap level gauge. Firstly, the float itself must have a certain length; even if it is short, it still has some length. When the liquid level is at zero or near zero, in order to achieve accurate measurements, the float must start rising from that zero liquid level. Therefore, the length of the float below the zero liquid level must be taken into account as part of the blind zone. So when the level is full, the same principle applies: the bottom of the float must be above the full liquid level. This explains why magnetic flap level gauges have blind zones; the distances of these blind zones are fixed. Moreover, the calculation of the liquid level differs in the following two cases: 1. If the space below the bottom of the tank is sufficient to accommodate the size of the blind zone, then the distance between the centers of the two flanges of the magnetic flap level gauge corresponds to the full-liquid level distance, and there is no need to take the blind zone into account. 2. If there is sufficient space below the bottom of the tank to accommodate the distance of the blind zone, then when designing and selecting the components, the flanges will definitely be installed between the bottom and top of the tank; in such cases, the blind zone must be taken into account when calculating the liquid level. The above two scenarios are suitable for side-mounted magnetic flap level gauges; if a top-mounted magnetic flap level gauge is used, then there is no issue of blind zones.