Pressure operated switch with bellows - has lever pressing against contact device when bellows are inflated

摘要

A pressure switching device has at least one bellows system. The bellows reacts to pressure changes and has a flat surface connected to a fixed middle piece. The other flat end surface is connected to a lever system. - The fixed middle piece (5) has bores to permit the introduction of pressure medium to the bellows (6). The moving endplate (8) of the bellows (6) is connected to a lever (9) which can press against an electric contact system (25). The lever may be loaded by a spring system (48).