Radiometry
The contactless measurement of thermal radiation is most commonly called infrared radiometry.
TemperatureTemperature
Measure of thermal energy density measurement with the help of IR cameras is not only contactless but also imaging. This is why it principally is by far superior to single spot measurements by pyrometers. Because only the recording of the temperaturetemperature
Measure of thermal energy density distribution over a larger area assures that measurements were performed at the relevant spots and that the extremal temperaturetemperature
Measure of thermal energy density values are detected.
Radiometry with infrared cameras requires:
- temperaturetemperature
Measure of thermal energy density calibration of all pixels (by surface or cavity emitters) - eliminination of disturbing radiation (e.g. of the self radiation of the infrared lens)
- knowledge of the emission coefficients of the emitting objects
- knowledge of optical parameters of the transmission path
(especially for measurements over large distances)