Distributed temperature sensor
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorTibor G. Horwath
Life of this patent
Estimating the term…
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.
Claims6
A distributed temperature sensor, in the form of a coaxial cable, comprising:
- a central, metallic, conductor;
- a cylindrical, flexible, nonconductive, material, surrounding the material, comprising:
- a plastic foam isolator, having voids randomly interspersed throughout its volume;
- and
- a liquid dielectric having a high ratio of dielectric constant to change in temperature, filling the voids of the isolator;
- and
- an outer conductor surrounding the nonconductive material.
Dependencies are inferred from the claim text.