Before you choose this product, we will briefly introduce the working principle of the magnetic flip column level gauge. It has a cavity that accommodates a floating ball, which we call the main tube or shell. It forms a connector with the container through a flange or other interface; In this way, the liquid level inside the chamber is at the same height as the liquid level inside the container, so the floating ball inside the chamber will rise and fall with the rise and fall of the liquid level inside the container; At this point, we cannot see the liquid level, so we installed a flip column display outside the chamber. When manufacturing the float, we installed magnetic steel at the junction of the float sinking into the liquid and the floating part. When the float rises and falls with the liquid level, its magnetism is transmitted through the shell to the flip column display, pushing the magnetic flip column to flip 180 degrees; Due to the fact that the magnetic flip column is a cylindrical body composed of two semi cylinders, red and white, the color of the display facing outside the flip column after flipping 180 ° will change (red below the liquid level and white above), and the height of the liquid level is at the junction of the two colors.