ITC Level II Practice Questions - Certified Infrared Thermographer Level II Exam

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A thermographer measures a surface temperature of 85°C on a motor with an assumed emissivity of 0.95. The actual surface is bare aluminum with an emissivity of 0.05. The reflected temperature is 22°C. What is the most accurate statement about this measurement?

The reading is accurate because the camera is calibrated to 85°C The apparent temperature is heavily influenced by reflected ambient radiation, making 85°C unreliable Aluminum emissivity of 0.05 means the reading will be 5% lower than actual Reflected temperature compensation has no effect when emissivity is set correctly

Correct Answer:

The apparent temperature is heavily influenced by reflected ambient radiation, making 85°C unreliable

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