2 | Product and functional description
FISCHER Mess- und Regeltechnik GmbH
12/56
BA_EN_DA03_GKT_HLP_ATEX
In the case of one-sided pressure by the measuring system above and beyond
the measuring range, the over-pressure guard will be activated. The over-pres-
sure causes the overloaded membrane and its collar to be pressed against the
inner O-ring. This creates two separate pressure spaces between the measur-
ing membranes that need to be filled with fluid. In the adjacent pressure space,
a corresponding over-pressure is created. The measuring membrane is suppor-
ted by the contained transfer fluid. In this way the measuring membranes com-
pensate the forces acting upon them.
