Response in a Variety of Arrangements

A perpendicular approach with the magnet parallel to the reed switch gives one operation at max. operation distance (Fig. 5.7). This method of operation offers medium sensitivity to stray magnetic fields, large switching courses and hysteresis and high switching position tolerance. 

A parallel motion with the magnet perpendicular to the reed switch allows two switching operations (Fig. 5.9). The distance over which the switch opens is very 

An angular motion which requires a large angle of movement to operate the switch (Fig. 5.10). This offers a medium sensitivity to stray magnetic fields and shorter switching distances than method A. 

Using a ring magnet with an axial motion, three closures can be obtained (Fig. 5.11). This method offers short switching distances and low sensitivity to stray magnetic fields. If a single operation is required, a very accurate adjustment is necessary. 

With both the magnet and the switch fixed, the switching operation is achieved by moving ferromagnetic material between the switch and the magnet (Fig. 5.12). Strong magnets are required. 

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