Capacitive sensor

Details Capacitive sensor Capacitive sensor

1989-03-16

1990-08-21

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

361181, 374184, G01K 1308, G01K 700

Patent

active

049500848

ABSTRACT:
The invention relates to a capacitive sensor for the measurement, under dynamic conditions, of at least one characteristic of a turbo-machine, this sensor comprising a conductive surface intended to be fixed to the casing near a succession of rotating blades to form the first plate of a capacitor, the second plate of which consists, in succession, of each one of the ends of the rotating blades when these ends pass in proximity to this conductive surface. This sensor comprises an electrical interconnection means to connect this conductive surface to first electrical detection means for measuring the variations of the capacitance of the capacitor thus formed. According to the invention, this electrical interconnection means also constitutes a means for connecting this conductive surface to second electrical detection means for measuring the temperature of the casing in the region of fixing of the said conductive surface.

REFERENCES:
patent: 2842738 (1958-07-01), Warnick
patent: 3926053 (1975-12-01), Schurrer et al.
patent: 4063167 (1971-12-01), Duly
patent: 4130019 (1978-12-01), Nitschke
patent: 4823071 (1989-04-01), Ding et al.

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