Magnetic disc rotating apparent flux signalizer

The utility model relates to a magnetic disc rotating type apparent flux signalized. A rotatable magnetic disc is arranged in a special transparent glass tube, the magnetic disc is fixed on a magnetic disc frame through a shaft, and the magnetic disc frame is closely arranged in the special transparent glass tube; both ends of the glass tube are fixed with flange discs; a detecting tube which can control the lower limit of flow is clamped outside the glass tube through a tube, a special dry reed contact is arranged in the detecting tube, and the contact is provided with a terminal outside the tube through a conducting wire. The magnetic disc rotating type apparent flux signalized is suitable for the cooling and lubricating systems of large-size equipment, can realize the flow control, warning and interlocking of liquid, and accordingly, the equipment can be protected to operate safely; the utility model can also be used for warning for overflow pipelines in an accident.