WIKA HIF - Manual (Page 4)

GB
4 WIKA Operating instructions Magnetic operated float switches Model RSM and HIF
13333283.01 01/2010 GB/D/F
1. Functional description
Magnetic operated float switches operate according to the float
principle with magnetic transmission. A reed contact built into the
slip pipe (5) or contact pipe (8) is activated by the magnetic field of a
permanent magnet on reaching a preset switching point. The perma-
nent magnet is located in a float (7) which changes its height with
the level of the medium being monitored. The switching state of the
reed contact can be evaluated and processed by a series-connected
control unit.
The number and arrangement of the floats depends on the number
of preset switching points, their contacting function and the distance
apart of the switching points.
2. Area of application
Magnetic operated float switches are used exclusively for level
control and monitoring of liquid media.
The liquids may not be heavily contaminated and should not have
a tendency to crystallize. Make sure that the materials of the switch
(float, slip pipe) which come into contact with the medium being
monitored are suitably resistant.
1. Functional description / 2. Area of application