Electrical impedance detector for measurement of physical quanti

Details Electrical impedance detector for measurement of physical quanti Electrical impedance detector for measurement of physical quanti

1993-03-30

1996-01-09

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361278, 361280, 374163, H01G 700, H01G 501

Patent

active

054834147

ABSTRACT:
Electrical impedance detector for measurement of physical quantities, in particular of temperature. The detector comprises electrodes (11,14), between which the electrical impedance (C;R) that represents the physical quantity to be measured is measured. Between these electrodes (11,14) there is an active material whose impedance properties are a function of the physical quantity to be measured. The active material of the detector is a very thin thread-like glass or glass-ceramic fibre (10), which has been manufactured by means of the glass-drawing technique. Further, a process for the manufacture of said detectors is described.

REFERENCES:
patent: 2639247 (1953-05-01), Squier
patent: 3210607 (1961-10-01), Flanagan
patent: 3443293 (1969-05-01), Masujima
patent: 3649891 (1972-03-01), Lawless
patent: 3854112 (1974-12-01), Greenwood
patent: 4921328 (1990-05-01), Seth
W. N. Lawless, "A Low Temperature Glass-Ceramic Capacitance Thermometer", The Review of Scientific Instruments, vol. 42, No. 5, May 1971.
Masashi Onishi et al., "Properties of Bi-Pb-Sr-Ca-Cu-O Glass-Ceramic Fibers Formed by Glass-Drawing Method", Japanese Journal of Applied Physics, vol. 30, No. 6A, Jun., 1991, pp. L988-L990.
"Proceedings Sensor 91 Congress", Part A/B, 13 May 1991, Band 1, vol. 1, pp. 237-246.
S. G. Bishop and W. J. Moore, "Chalcogenide Glass Bolometers", Applied Optics, vol. 12, No. 1, Jan. 1973, pp. 80-83.

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