Pressure protection device for use in dense pipe system for automation industry, has conductive component designed such that deformation of component occurs when exceeding predetermined threshold value of pressure in inner space of housing

摘要

The device (10) has an inner conductor (20) and a flexible electrical conductive component (1) e.g. metal foil, where the conductive component is gastight and isolated from a portion of the inner conductor under normal conditions. The electrical conductive component is designed such that deformation of the electrical conductive component occurs during exceeding a predetermined threshold value of pressure in an inner space (11) of a hermetic sealed housing (12) of a field device, which leads to short circuit between the electrical conductive component and the inner conductor.