Process temperature measurement using infrared detector
AssigneeRosemount Inc.
InventorJason Harold Rud
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Abstract
A process variable transmitter for measuring a temperature in an industrial process includes an infrared detector arranged to receive infrared radiation from a component in the industrial process. A memory contains temperature characterization information which relates the infrared radiation received from the component with an internal temperature of the component. Measurement circuitry is configured to determine the internal temperature of the component based upon the received infrared radiation from the component and the temperature characterization information.
Claims19
A process variable transmitter for measuring a process temperature in an industrial process, comprising:
- an infrared detector arranged to receive infrared radiation from a process component in the industrial process;
- a memory containing temperature characterization information which relates the infrared radiation received from the process component with an internal temperature of the process component;
- and
- measurement circuitry configured to determine the internal temperature of the process component based upon the received infrared radiation from the surface of the process component and the temperature characterization information.
The process variable transmitter of claim 15, wherein the characterization information includes characterization information related to the ambient temperature.
A method for measuring a temperature of a process fluid in an industrial process, comprising:
- receiving infrared radiation with an infrared radiation detector from a process component in the industrial process which carries the process fluid;
- retrieving temperature characterization information from a memory, wherein the temperature characterization information relates the received infrared radiation to temperature of the process fluid;
- applying the temperature characterization information to the received infrared radiation and responsively determining temperature of the process fluid;
- and
- providing an output related to the temperature of the process fluid.
Dependencies are inferred from the claim text.