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US 4,899,671 AGranted
Method for measuring temperature of hot gases inside a vessel which radiates microwave energy
AssigneeShell Oil Company
InventorRonald M. Bass
Life of this patent
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Abstract
An improved method for measuring temperature of hot gases inside a vessel which radiates microwave energy, which method comprises sensing the energy at a frequency above about 100 gigahertz whereby the effect on said measurement of any solids entrained in the gases and of the vessel is minimized. The method is particularly suited to determining rapidly fluctuating temperatures.
Claims4
In a method for measuring temperature of hot gases within a vessel, which gases may contain entrained solids, which method comprises:
- (a) sensing the microwave energy emitted from said gases, any entrained solids, and the inner surface of the vessel;
- (b) converting said sensed microwave energy into an electrical signal indicative thereof;
- and
- (c) measuring the amplitude of said signal as an indication of the temperature of said gases, the improvement which comprises sensing the microwave energy at a frequency in the range above 100 Gigahertz, whereby the temperature of the gases, the temperature of the entrained solids, and the temperature of substantially only the inner surface of the vessel in contact with the gases contribute to the signal.
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Dependencies are inferred from the claim text.