Patent ID: 8763466

Claim:
A gauge pressure sensor for determining the pressure of a medium relative to atmospheric pressure, comprising: a housing; a measuring element, which is positioned in said housing, wherein an outwards facing side of said measuring element is in contact with the medium and is exposed to the pressure of the medium; a tube for reference pressure, which conducts ambient air at atmospheric pressure to an inner side of said measuring element; an analysis unit, which determines the pressure of the medium from a magnitude determined by means of said measuring element; and at least one dehumidifying chamber, positioned in said housing, for the collection of air moisture, wherein: said dehumidifying chamber contains a moisture adsorbing material or is primarily composed of a moisture adsorbing material, in that said moisture adsorbing material is at least, in sections, enclosed by a wall, which is composed of a first moisture permeable material, or is at least, in sections, free from a wall; and in that said reference pressure supply tube is, at least in sections, a first or second moisture permeable material or in that the reference pressure tube has an aperture so that moist air, in said reference pressure supply tube, is in contact with said dehumidifying chamber.