Transducer comprising a diaphragm for use with hydrogen-containing fluid media

A system for determining a pressure of a hydrogen-containing fluid medium, the system defining a main axis and comprising:

• a hydrogen-containing fluid medium disposed in a first space;
• a transducer that includes:
• a pressure side end configured to be disposed to face the fluid medium and including a metallic diaphragm extending in a plane generally normal to the main axis;
• a housing, which defines a second space;
• a measuring arrangement disposed in the second space;
• wherein the diaphragm is configured and disposed for hermetically separating the first space from the second space;
• wherein the diaphragm defines a thickness measured parallel to the main axis and includes a metallic material made of a high-alloy martensite;
• wherein the content of the metallic material includes more than 5% by weight of at least one of the elements chromium or molybdenum or nickel;
• wherein the thickness of the diaphragm does not exceed 500 micrometers;
• and
• wherein the metallic material of the diaphragm has an average grain size of less than 20 μm.