Split assembly and disassembly method and device for magnetic float liquid level sensor

The invention relates to split assembly and disassembly method and device for a magnetic float liquid level sensor, which can realize the detection and maintenance for the sensor, without clearing a tank or discharging pressure of the tank. The invention has the technical scheme that the magnetic suspension liquid level sensor comprises a measuring bar, a magnetic float, and a magnetic potential detection mechanism, wherein the magnetic potential detection mechanism is provided with a magnetic sensitive part and a signal transmitter. When in installation, the device is characterized in that a hollow bin port of the measuring bar is arranged outside a tank body, which enables the pressure in a hollow bin in the measuring bar to be isolated from the pressure in the tank body, and the hollow bin can be communicated with atmosphere, and the magnetic sensitive part is fixedly arranged in the hollow bin of the measuring bar via the hollow bin port; when in maintenance or detection, the magnetic sensitive part of th