Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent
1988-12-08
1989-12-19
Griffin, Donald A.
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
73724, H01G 700, G01L 912
Patent
active
048886629
ABSTRACT:
The disclosure relates to a pressure transducer for use in measurement of pressures in the range of 3000 to 5000 psi and above wherein the pressure sensing module is physically separated from the electrical connector by a barrier formed from a material which is less readily deformable under high pressure than the connector. This is accomplished in one embodiment by separating the electrical connector from the pressure sensing element by a metal support ring againsst which the pressure sensing element bears. In accordance with a second embodiment, the electrical connector is disposed externally of the housing with the pressure sensing element being disposed within the housing and bearing against an interior wall thereof. In accordance with a third embodiment, the housing is formed of two inexpensive members, one crimped within the other, with the pressure sensing module bearing against an interior wall of the inner housing member and the connector being crimped to the system by a flange on the outer housing member. Preferably, a conductor, which is connected to the circuit ground of the electronic circuitry is also coupled to the system ground by crimping it between the housing and the electrical connector during the crimping of the connector to the remainder of the transducer.
REFERENCES:
patent: 4128006 (1978-12-01), Grabow
patent: 4329732 (1982-05-01), Kavli et al.
patent: 4414851 (1983-11-01), Maglic
patent: 4716492 (1987-12-01), Charboneau et al.
Griffin Donald A.
Haug John A.
McAndrews James P.
Sharp Melvin
Texas Instruments Incorporated
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