1. Emissivity Dependence: The accuracy of infrared thermometry depends on the emissivity of the material being measured. Different materials emit infrared radiation differently, which can affect the temperature readings. 2. Surface Conditions: The surface condition of the catalyst, such as cleanliness and texture, can influence the infrared radiation emitted and, consequently, the temperature measurement. 3. Line-of-Sight Requirement: Infrared thermometry requires a clear line of sight to the object being measured, which might not always be feasible in complex catalytic reactors.
