Pressure sensor having means for electromagnetically shielding resistors

A pressure sensor comprising:

• a metallic housing having an end with an opening formed therethrough;
• a ceramic diaphragm accommodated within said metallic housing such that said ceramic diaphragm is exposed at one of opposite major surfaces thereof to a pressure of a measurement fluid in an external space through said opening of said metallic housing;
• at least one resistor formed integrally on the other of said opposite major surfaces of said ceramic diaphragm, an electrical resistance value of said at least one resistor varying with said pressure acting on said one major surface of said ceramic diaphragm, whereby said pressure is determined by said electrical resistance value;
• and
• a shielding member disposed between said one major surface of said ceramic diaphragm and said open end of said metallic housing such that said shielding member is spaced apart from said one major surface, said shielding member having a porous structure through which said pressure in said external space acts on said one major surface of said ceramic diaphragm.