Pressure transducer

A pressure transducer, comprising:

• a pressure sensor having a measuring diaphragm;
• a hydraulic diaphragm seal comprising a diaphragm seal body and a separating diaphragm which is connected to the diaphragm seal body to form a diaphragm seal chamber between the separating diaphragm and said diaphragm seal body, wherein the separating diaphragm is hydraulically coupled to the measuring diaphragm via the diaphragm seal chamber so that a pressure that is to be determined is applied to the separating diaphragm is passed on to the measuring diaphragm;
• wherein the pressure transducer further comprises an operating and/or evaluation circuit which is configured to output a pressure measurement signal corresponding to a deflection of the measuring diaphragm,
• wherein the pressure transducer further comprises a detection unit which is configured to generate a frequency spectrum from the pressure measurement signal and to compare at least a sub-range of the frequency spectrum generated with at least a partial range of a frequency spectrum that is characteristic of the pressure transducer and to determine an indication if at least the partial range of the frequency spectrum generated significantly deviates from the at least one partial range of the frequency spectrum that is characteristic of the pressure transducer and to further interpret this indication as a leak in the separating diaphragm.