Electrical feedthrough means for pressure transducer

Details Electrical feedthrough means for pressure transducer Electrical feedthrough means for pressure transducer

1984-03-29

1985-08-20

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

H01G 700

Patent

active

045368201

ABSTRACT:
A bulkhead feedthrough for capacitive pressure transducers including a feedthrough body portion welded in a cylindrical opening in a pressure receiving body in which the transducer is mounted. The feedthrough body provides a pressure seal for the transducer cavity and carries conducting rods in holes in the body. The rods are insulated from the body and holes are drilled in the end of each rod from the transducer side to receive spring loaded plunger type contacts which are inserted in the holes so that the plunger protrudes to contact the transducer elements. The dimensions of the feedthrough body and the thermal coefficient of expansion are such that the space between the feedthrough body and the pressure receiving body varies with temperature changes so that the resulting volume changes are sufficient to compensate for the changes in volume of the silicone oil in the transducer cavities.

REFERENCES:
patent: 4257274 (1981-03-01), Shimada et al.
patent: 4427842 (1984-01-01), Anderson
patent: 4499773 (1985-02-01), Crampton et al.

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