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The similarities and differences between top-mounted and side-mounted magnetic flap level gauges
Time：
2025-09-29
A magnetic flap level gauge is a specialized instrument for liquid level measurement, developed and manufactured based on the principles of magnetic pole coupling and Archimedes' law of buoyancy, ingeniously integrating the characteristics of mechanical transmission. Depending on their installation location on the tank, magnetic flap level gauges can be categorized as top-mounted and side-mounted. To provide consumers with a deeper understanding of how these two types of magnetic flap level gauges work, this article details the similarities and differences between top-mounted and side-mounted magnetic flap level gauges.
Structural Similarities and Differences Between Side-mounted and Top-mounted Magnetic Flap Level Gauges
1. Commonalities
In terms of structure, both side-mounted and top-mounted magnetic flap level gauges consist of a display panel, a magnetic float, a displacer, and process connection components such as flanges.
2. Differences
The magnetic float in a top-mounted magnetic flap level gauge is not located within the float ball, but rather operates via a connecting rod connected to the lower float ball.
Similarities and Differences in the Operating Principles of Side-mounted and Top-mounted Magnetic Flaps
1. Similarities
Both side-mounted and top-mounted magnetic flap level gauges utilize the principles of a connecting pipe and magnetic coupling to achieve real-time liquid level measurement and display. When used in conjunction with a magnetic switch or remote transmitter, both can achieve automatic liquid level control and remote operation.
2. Differences
A side-mounted magnetic flap level gauge has an inner chamber (called a main tube or float) that houses a float ball. This chamber connects to the container via a flange or other connection, forming a connecting vessel. The liquid level in the chamber is at the same height as the container, so the float ball rises and falls with the liquid level. Because a magnet is installed at the intersection of the float ball's submerged and floating parts, as the float ball and the float rise and fall with the liquid level, the magnetism is transmitted through the outer casing to the magnetic flap on the display panel, causing it to flip 180°. Because the magnetic flap has two sides, red and white, after flipping 180°, the side facing outward from the display panel changes color (red below the liquid level, white above). The intersection of the two colors indicates the current liquid level.
A top-mounted magnetic flap level gauge consists of two parts: the upper part sits on top of the container, while the lower part is mounted inside the container and connected to the container flange by a flange. A connecting rod connects the float in the lower portion of the float to the magnetic head in the upper portion. When the liquid level changes, the float drives the magnet up and down inside the float, causing the red and white flip-up plates on the display to flip. The intersection of the red and white magnetic flip-up plates indicates the liquid level.
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