Device for vacuum monitoring installation components used in glass production has a bellows open on one side and having an inner chamber connected to a hollow chamber

摘要

Device for vacuum monitoring installation components (10) comprises an evacuated hollow chamber (11) impinged by a molten liquid medium and having a surface protected by a contact material, and a bellows (15) open on one side and having an inner chamber connected to the hollow chamber. The bellows expands with increasing vacuum and a display or switching signal is produced.