Use of resilient seals for high temperature and/or high pressure sealing in a guided wave radar level measurement device
AssigneeHoneywell International Inc.
InventorStuart James Heath
Life of this patent
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Abstract
A guided wave radar level measurement device includes a process connection composed of an outer conductor and a central conductor. The central conductor is surrounded at least in part by a dielectric material. One or more resilient metal seals can be employed to form a hermetic seal around a portion of the probe. The metal seal protects the dielectric material such that the hermetic seal is isolated from process and temperature shock. The metal seal(s) can be further mated with one or more insulators and one or more gaskets, the metal seal(s) to provide a thermal and mechanical barrier as well as offering chemical resistance to the guided wave radar level measurement apparatus.
Claims20
A guided wave radar level measurement device, comprising:
- a probe comprising an outer conductor and a central conductor, said central conductor surrounded at least in part by a dielectric material;
- at least two metal seals that form a hermetic seal around a portion of said probe, said dielectric material protected by said at least two metal seals such that said hermetic seal is isolated from process and temperature shocks;
- and
- at least one insulator and at least one gasket wherein said at least two metal seals are mated with said at least one insulator and said at least one gasket to provide a thermal and mechanical barrier as well as isolating electronics of said guided wave radar level measurement device from said process and temperature shocks.
A guided wave radar level measurement device, comprising:
- at least two resilient metal seats and wherein said guided wave radar level measurement device includes a cooler region and a warmer region, wherein said cooler region includes a plastic material;
- and
- a conductor probe wherein a lower portion of said conductor probe is surrounded by a glass material, a central portion of said conductor is surrounded by a plurality of ceramic rings, and an upper portion of said conductor probe is surrounded by a plastic material, wherein said central portion is located between said lower portions and said upper portion, and wherein said at least two resilient metal seals are located in said cooler region of said guided wave radar level measurement device where said plastic material resides, said plastic material having a dielectric lower than that of said plurality of ceramic rings.
A method of configuring a guided wave radar level measurement device, comprising:
- providing a process connection comprising an outer conductor and a central conductor;
- surrounding said central conductor at least in part by a dielectric material;
- configuring at least two metal seals to form a hermetic seal around a portion of said probe, said dielectric material protected by said at least two metal seals such that said hermetic seal is isolated from process and temperature shocks;
- and
- mating said at least two metal seals with at least one insulator and at least one gasket to provide a thermal and mechanical barrier as well as isolating electronics of said guided wave radar level measurement device from said process and temperature shocks.
Dependencies are inferred from the claim text.