Capacitive sensor device for use at high temperature and pressur

Details Capacitive sensor device for use at high temperature and pressur Capacitive sensor device for use at high temperature and pressur

1997-06-26

1999-04-06

Do, Diep N.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324662, 324671, G01R 2726

Patent

active

058923659

ABSTRACT:
A capacitive sensor device for use at least up to 1300.degree. C. and 40 bar, including a coaxial cable comprising a conductive sleeve (10) and at least one inner conductor (21) which are separated by an insulator (19), said cable having an end portion (1) of enlarged diameter forming a probe in which the insulator is an anticorrosive refractory element (9, 29) locked by a first and a second anticorrosive refractory metal protection element (5, 4), welded to the sleeve and to said inner conductor, respectively, which second protection element forms an electrode (4) having a flat surface (4a) of an area larger than the cross-sectional area of the end portion of the inner conductor.

REFERENCES:
patent: 4063167 (1977-12-01), Duly
patent: 4329644 (1982-05-01), Libertini et al.
patent: 4804905 (1989-02-01), Ding et al.
patent: 4818949 (1989-04-01), Dooley
patent: 5101165 (1992-03-01), Rickards
patent: 5166626 (1992-11-01), Hester et al.

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