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Application filed by Rosemount IncfiledCriticalRosemount Inc
Priority to MYPI87001473ApriorityCriticalpatent/MY100597A/en
Publication of MY100597ApublicationCriticalpatent/MY100597A/en
A CELL (10) FOR SENSING DIFFERENTIAL PRESSURES HAS A SINGLE BRITTLE MATERIAL DIAPHRAGM (43) MOUNTED ON SUPPORT PLATES POSITIONED ON OPPOSITE SIDES OF THE DIAPHRAGM. THE DIAPHRAGM SURFACES WHEN AT ZERO DIFFERENTIAL PRESSURE FACING THE SUPPORT ARE CONCAVE AND SHAPED TO CONFORM VERY CLOSELY TO THE SHAPE THE DIAPHRAGM HAS WHEN IT IS DEFLECTED SO THAT WHEN THE DIAPHRAGM (43) IS UNDER A SELECTED PRESSURE AND IT IS FORCED AGAINST ONE OF THE SUPPORTS IN EITHER DIRECTION, THE DIAPHRAGM IS SUBSTANTIALLY PLANAR OR FLAT AND SUPPORTED FULLY ON ITS SUPPORT PLATE. THE DIAPHRAGM (43) MAY BE SHAPED BY PLACING IT UNDER A PRESSURE SO THAT IT BOWS OR DEFLECTS AND THEN GRINDING THE SURFACE OPPOSITE FROM THE APPLIED PRESSURE FLAT.(FIG. 6)