Patent ID: 6781814
Filing Date: 2004-08-24
Classification: G01L

Abstract:
A fluid pressure sensor comprisinga capacitive pressure sensing element having a first surface to be exposed to a fluid pressure source to provide a capacitance value which varies with the fluid pressure applied, conditioning circuitry for converting the capacitance to output voltage signals, an electrically insulating connector and transducer terminals, the connector mounting the terminals for connection to the conditioning circuitry, the connector having a head portion forming a circuit chamber in which the conditioning circuitry is disposed, an electrically conductive cup-shaped member having a bottom wall formed with a fluid receiving aperture and a circumferential sidewall extending from the bottom wall to a free end portion, the pressure sensing element and head portion of the connector received in the cup-shaped member with the free end portion of the circumferential wall crimped to the head portion, the cup-shaped member being electrically connected to the conditioning circuitry, an electrically insulating sleeve, the cup-shaped member received in the sleeve, and a metal housing having first and second ends, the first end formed with a circumferential wall having a free distal end portion, the wall of the housing forming a cavity, a coupling portion of the housing formed with a fluid passage extending from the second end to the cavity, the cup-shaped member, head portion of the connector and insulating sleeve received in the cavity of the housing with the free distal end portion of the wall of the housing crimped onto the head portion and electrically separated from the housing by the electrically insulating sleeve.