Quick Overview:

The Reed switch is mounted on the tie rod of the pneumatic cylinder. It is used for proximity sensing of the magnet present on the piston of the cylinder. The reed switch sends an electrical impulse to the solenoid valve / other control device when the piston approaches the sensing position.

Note :

a) when inductive loads are switched, a high voltage peak is produced at the moment of switch - off. For this reason, proximity switch must be provided with a protective circuit.

b) The cylinder with magnetically actuated reed switches should not be fitted at places where there are strong magnetic fields.