Pressure sensor, with - a meter body, - an electrically conductive measuring diaphragm which encloses a pressure chamber, wherein said diaphragm is connected to the meter body and can be exposed to a pressure to be measured (Δp), and - an electrode which is arranged at a distance from the measuring diaphragm and is electrically isolated in relation to the measuring diaphragm, said electrode forming, together with the measuring diaphragm, a capacitor with a variable capacity which depends on a deflection of the measuring diaphragm that depends on a pressure (Δp) acting on the measuring diaphragm, - wherein the meter body has an interior surface which is opposite the measuring diaphragm and delimits the pressure chamber, and - wherein the meter body has a recess that runs through the meter body and enters into the pressure chamber, characterized in that - the meter body is made from an electrically conductive material, - the recess has an aspect ratio of 10 to 25, - an insulating layer of silicon dioxide (SiO 2) is applied on the interior surface, wherein the insulating layer is a subsection of an insulating layer (17, 17') applied on the meter body, which extends from the interior surface via a lateral surface of the recess as far as a connection area provided on an exterior surface of the meter body, and - the electrode is a conductive layer consisting of doped polysilicon and applied on the insulating layer on the interior surface, wherein the electrode is a subsection of a conductive layer, said layer extending on the insulating layer (17, 17') from the interior surface via the lateral surface of the recess as far as the connection area provided on the exterior surface of the meter body. - a meter body, - an electrically conductive measuring diaphragm which encloses a pressure chamber, wherein said diaphragm is connected to the meter body and can be exposed to a pressure to be measured (Δp), and - an electrode which is arranged at a distance from the measuring diaphragm and is electrically isolated in relation to the measuring diaphragm, said electrode forming, together with the measuring diaphragm, a capacitor with a variable capacity which depends on a deflection of the measuring diaphragm that depends on a pressure (Δp) acting on the measuring diaphragm, - wherein the meter body has an interior surface which is opposite the measuring diaphragm and delimits the pressure chamber, and - wherein the meter body has a recess that runs through the meter body and enters into the pressure chamber, characterized in that - the meter body is made from an electrically conductive material, - the recess has an aspect ratio of 10 to 25, - an insulating layer of silicon dioxide (SiO 2) is applied on the interior surface, wherein the insulating layer is a subsection of an insulating layer (17, 17') applied on the meter body, which extends from the interior surface via a lateral surface of the recess as far as a connection area provided on an exterior surface of the meter body, and - the electrode is a conductive layer consisting of doped polysilicon and applied on the insulating layer on the interior surface, wherein the electrode is a subsection of a conductive layer, said layer extending on the insulating layer (17, 17') from the interior surface via the lateral surface of the recess as far as the connection area provided on the exterior surface of the meter body.