Distributed temperature sensor

Details Distributed temperature sensor Distributed temperature sensor

1974-05-24

1976-02-17

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73362R, 324 585B, G01K 102, G01K 300, G01K 700, G01R 2704

Patent

active

039383857

ABSTRACT:
A distributed temperature sensor, in the form of a coaxial cable terminated in its characteristic impedance, comprising: an inner metallic conductor; a cylindrical, flexible, nonconductive material, surrounding the metallic conductor, having a plurality of axial voids extending throughout the length of the cable; a temperature-sensitive dielectric filling the axial voids, the voids being plugged at each end; an outer conductor surrounding the nonconductive material; and an optional elastomeric jacket surrounding the outer conductor.
The invention also relates to apparatus for taking a continuous readout of a distributed temperature field, using the coaxial cable as a key element.

REFERENCES:
patent: 2615973 (1952-10-01), Heath
patent: 3211002 (1965-10-01), Franklin
patent: 3510762 (1970-05-01), Leslie
bottreau, A. et al., Realization of a Reflecto-Interferometer for Determiion of the Complex Permittivity of Liquids . . . ., in C. R. Hebd. Seances Acad. Sci. B. (France), Vol. 276, No. 7, Feb. 12, 1973, pp. 255-257.

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