Measuring of fluid in a vessel with two coaxial cable sections and a coupling therebetween using time domain reflectometry
First Claim
Patent Images
1. An apparatus for measuring a level of a liquid comprising:
- a first coaxial cable section including a first center conductor, a first outer conductor and a solid dielectric between the first center conductor and first outer conductor;
a second coaxial cable section including a second center conductor wherein the second center conductor is a unitary extension of the first center conductor, a second outer conductor and an air dielectric between the second center conductor and second outer conductor; and
a coupling between the first and second coaxial cable sections, wherein the second coaxial cable section is disposed in a liquid for determining a level of the liquid;
wherein the coupling includes a center conductor, an outer conductor and a dielectric extending therebetween, and at least part of the dielectric of the coupling is an air dielectric and communicates with the air dielectric of the second coaxial cable section.
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Abstract
An apparatus and method for measuring a level of a liquid is provided. Generally, the apparatus contains a first coaxial cable section including a first center conductor, a first outer conductor and a solid dielectric between the first center conductor and first outer conductor. The apparatus also contains a second coaxial cable section including a second center conductor, a second outer conductor and an air dielectric between the second center conductor and second outer conductor. Further, a coupling is provided between the first and second coaxial cable sections, wherein the second coaxial cable section is disposed in a liquid for determining a level of the liquid.
50 Citations
14 Claims
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1. An apparatus for measuring a level of a liquid comprising:
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a first coaxial cable section including a first center conductor, a first outer conductor and a solid dielectric between the first center conductor and first outer conductor; a second coaxial cable section including a second center conductor wherein the second center conductor is a unitary extension of the first center conductor, a second outer conductor and an air dielectric between the second center conductor and second outer conductor; and a coupling between the first and second coaxial cable sections, wherein the second coaxial cable section is disposed in a liquid for determining a level of the liquid; wherein the coupling includes a center conductor, an outer conductor and a dielectric extending therebetween, and at least part of the dielectric of the coupling is an air dielectric and communicates with the air dielectric of the second coaxial cable section. - View Dependent Claims (2, 3, 4, 5)
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6. A fluid level gauge assembly for measuring a level of a fluid in a fluid container, the fluid container including a top, a bottom and at least one side wall, the fluid level gauge assembly comprising:
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a first coaxial cable section having a first end and a second end, the first coaxial cable section including a first center conductor, a first outer conductor and a solid dielectric between the first center conductor and first outer conductor; a second coaxial cable section having a first end and a second end, the second coaxial cable section including a second center conductor wherein the second center conductor is a unitary extension of the first center conductor, a second outer conductor and an air dielectric between the second center conductor and second outer conductor; and a coupling between the second end of the first coaxial cable section and the first end of the second coaxial cable section, wherein the second coaxial cable section is disposed in a fluid for determining a level of the fluid, the coupling includes a center conductor, an outer conductor and a dielectric extending therebetween, and at least part of the dielectric of the coupling is an air dielectric and communicates with the air dielectric of the second coaxial cable section. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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Specification