Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1986-09-08
1989-02-14
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324 61R, 174152GM, 174 5055, G01R 2726, H01J 500
Patent
active
048049050
ABSTRACT:
A capacitive measuring system including a sensor for measuring the clearance between a movable part and a fixed casing facing the movable part, the sensor is secured in the casing and has an active face facing the movable part to constitute a capacitor whose charge is representative of the clearance. A triaxial cable connects the sensor to an amplifier. The triaxial cable has a central conductive core and two surrounding conductors insulated from one another and from the core. The sensor comprises a central body including a disk with a surface constituting the active face of the sensor made from a metal of the platinum group (VIII) or an alloy thereof. The central body is connected to the core of the triaxial cable. Two conductive shields surround the central body and are connected to respective conductors of the triaxial cable. An electrical shielding or insulation of ceramic or glass is between the central body and the conductive shields. The conductive shields are made of a metal having a substantially lower coefficient of thermal expansion than the central body. The sensor is secured with axial adjustment in the casing, in such manner that accurate active clearance control of a machine, such as a turbo-engine, jet-engine or the like power plant is provided.
REFERENCES:
patent: 2802178 (1957-08-01), Shafer et al.
patent: 3027769 (1962-04-01), Coon
patent: 3400331 (1968-09-01), Harris
patent: 3628136 (1971-12-01), Jonas
patent: 4329644 (1982-05-01), Libertini et al.
patent: 4395827 (1983-08-01), Stowe et al.
Engineer Publication, Feb. 20, 1953, I.A. Mossop and F.D. Gill, pp. 291-292.
Biebl Hermann
Ding Kurt
Knoell Hartwig
Wenzl Josef
Eisenzopf Reinhard J.
Harvey Jack B.
MTU of Postfach
LandOfFree
Capacitive measuring system for measuring the distance between t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Capacitive measuring system for measuring the distance between t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitive measuring system for measuring the distance between t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1368367