Patent ID: 11933685
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. A corrosion monitoring system of an electrical enclosure in a hazardous environment, comprising:
at least one sensor installed inside the electrical enclosure comprising an electrical device, wherein the at least one sensor is a Fiber Bragg Grating (FBG) optical sensor and is configured to cause wavelength changes in ultraviolet (UV) light reflected by the at least one sensor;
an interrogator mounted inside the electrical enclosure, wherein the interrogator is configured to:
measure the wavelength changes of the UV light reflected by the at least one sensor,
determine a corrosion-related strain in the electrical enclosure based on the wavelength changes, wherein the wavelength changes are a function of corrosion-related strain in the electrical enclosure; and

a corrosion monitoring computing device comprising at least one processor in communication with at least one memory device, the corrosion monitoring computing device located remotely from the at least one sensor and programmed to:
receive the computed corrosion-related strain in the electrical enclosure based on the wavelength changes;
compare the computed corrosion-related strain with a predetermined threshold; and
recommend preventive maintenance based on the comparison.