The HR-UQZ side mounted heat tracing magnetic flip column level gauge consists of a body, a flip plate box (composed of red and white dual color magnetic flip plates), a float, a flange cover, and a level transmitter. Its structure is shown in the figure. The working principle is that the flip box and transmitter outside the body are driven by the float inside the body (with a directional magnetic source, developed according to different media and pressures) to flip and display red and white colors, and indicate different liquid level heights with the movement of the float. At the same time, the liquid level transmitter transmits the liquid level signal to the control center for liquid level indication and control, and can also be centrally monitored through a computer.