Patent ID: 6935181

Claim:
An anticorrosive capacitive vacuum sensor manufactured by the micromachining technique, comprising: an anticorrosive elastic diaphragm electrode operable to elastically deflect in response to a change in the pressure of a gas applied against said anticorrosive elastic diaphragm electrode, said anticorrosive elastic diaphragm electrode being formed of a chemically stabilized material other than monocrystalline silicon; and a rigid fixed electrode arranged to face said anticorrosive elastic diaphragm electrode, said anticorrosive elastic diaphragm electrode and said rigid fixed electrode defining a closed space therebetween and being arranged such that a change in the capacitance between said anticorrosive elastic diaphragm electrode and said rigid fixed electrode occurs in response to the deflection of said anticorrosive elastic diaphragm electrode for measuring the pressure of the gas.