Top mounted level indicators form an integral part of the pressure vessel. Via a process connection a standpipe is mounted
on top of a tank or a vessel. The top mounted pipe contains a magnetic system which is connected to a float and buoyancy rod system.
The concentrated magnetic field of the permanent magnet transmits the liquid level of the tank below in proportion to the filling height
in a contactless way through the wall of the top-mounted standpipe onto externally mounted displaying, recording and switching elements.