Abstract: This pressure measuring arrangement (10), which is both proof against the coupling-in of interference signals and satisfies the specifications relating to explosion protection, comprises a capacitive, ceramic pressure sensor (11) which has a substrate (12) having at least one electrode applied thereto and an associated diaphragm (13) having a counter-electrode applied thereto. Electrical contact can be made with the electrode and counter-electrode at the rear side (121) of the substrate, on which rear side is arranged a converter circuit (14) for capacitance changes which are caused by pressure changes.

Abstract: In this method for producing capacitive alumina-ceramic absolute pressure sensors sorted in high-precision zero-point long-term stability defect classes referred to a measured-value span c.sub.sp, the sensors are firstly produced conventionally: a substrate is provided with an annular first electrode and, at the center, a circular second electrode insulated from the first; a diaphragm is provided with a third electrode, and the substrate and diaphragm are joined tightly together in a vacuum by the mutually facing electrodes, at an outer edge through the interposition of an active brazing ring with the formation of a chamber, with the result that a pressure-dependent capacitance C.sub.p and a pressure-independent capacitance C.sub.r are produced. Then, using the equation c=(C.sub.p -C.sub.r)/C.sub.p =k.sub.1 (p-p.sub.0)+k.sub.0, at room temperature and under a vacuum (=p.fwdarw.0) a first zero value c.sub.n1 =-k.sub.1 p.sub.0 +k.sub.