For those exceeding a certain length, it is necessary to add intermediate reinforcement flanges or ear hooks as fixed supports to increase strength and overcome their own weight; The installation position of the magnetic flap level gauge should avoid or be far away from the inlet and outlet of the material medium to avoid rapid changes in the local area of the material fluid, which may affect the accuracy of the level measurement; When equipped with remote transmission supporting instruments, the following requirements should be met: the zero position of the remote transmission supporting instrument should be on the same horizontal line as the zero position indication of the liquid level gauge; The connection between the remote transmission supporting instrument and the display instrument or industrial control computer is best laid separately through a protective tube or with a shielded two core cable; The remote transmission supporting instruments should be tightly attached to the main pipe of the liquid level gauge and fixed with stainless steel clamps (iron is prohibited); The sensing surface on the remote transmission supporting instrument should face and be closely attached to the main pipe; After the wiring holes of the junction box are laid, it is required to be well sealed to prevent rainwater, moisture, and other factors from entering and causing the remote transmission supporting instruments to malfunction. The junction box should be promptly covered after maintenance or debugging is completed.