If it is desired to perform a thermographic analysis of a piece of equipment with a suspected possible fault and compare the thermal signature with similar fault-free equipment, what is the name of the thermography performed?
• Types of thermography used in condition monitoring (baseline, comparative, trending, spectral) • Purpose of comparing a suspected component’s thermal image with a known-good (fault-free) component • Difference between one-time comparison and long-term monitoring over time
• Ask yourself: Is this question about creating an original reference image when the system is known to be good, or about comparing a suspect item to a known-good reference? • Consider whether the key action here is a side‑by‑side comparison at one point in time, or observing temperature changes over many inspections. • Think about which option names imply building a starting reference, which imply ongoing tracking, and which imply analyzing different wavelengths of infrared radiation.
• Identify which choice best describes a direct comparison between suspect and known-good equipment at the same moment. • Eliminate any term that refers mainly to long-term trend analysis over multiple inspections rather than a single comparison. • Eliminate any option that focuses on different infrared wavelengths or spectral analysis, since the question does not mention wavelength or spectrum.
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