Limit switch with facilities for transmitting control signals

摘要

A limit switch has exchangeable switching elements to supply various types of control signals. The switching element can be fitted onto a stop screw and then attached to it. The stop screw is used for fixing the switching element in position and for adjusting the stop.The switching element consists of an electrical microswitch with a contact, an initiator or an element with a Pitot tube for controlling a fluid. The stop screw has a longitudinal hole which contains a stop spindle. The spindle is backed up by a spring. The spring has very fine threads.