Abstract: The invention relates to a measuring cell with a casing for housing a sensor, in particular a pressure transducer, in which the casing has a pressure compensation vent for the sensor; and is provided with a sealing element with an axisymmetrical circumferential surface arranged proximate an internal surface of a casing bore formed operably and complementary hereto, and that the pressure compensation vent is formed as at least one gap resistant to ignition flashovers by interaction of a strip-shaped and plane surface section extending along the casing bore on the circumferential surface of the sealing element with the internal surface of the casing bore.

Abstract: The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter and subjectable to a pressure to be measured, a communicating chamber located inside said base body, which receives a pressure transmission medium, said chamber being closed on the pressure-sensitive side by the separating membrane, wherein the coefficient of thermal expansion of the pressure transmission medium is established in such a way that a temperature-induced change in the volume of the communicating chamber equals a temperature-induced change in the volume of the pressure transmission medium.

Abstract: The present invention relates to an antenna system for a level measuring device for emitting microwaves by means of an antenna horn, at the front side of the small funnel aperture thereof. HF energy in the form of microwave signals is directly axially coupled by means of planar structures having one patch or several patches.