User Manual

Table of contents
13.4.2 Figure.......................................................................... 67
13.5 Draft ...................................................................................... 68
13.5.1 General........................................................................ 68
13.5.2 Figure.......................................................................... 68
14 About FLIR Systems .......................................................................... 70
14.1 More than just an infrared camera ................................................ 71
14.2 Sharing our knowledge .............................................................. 72
14.3 Supporting our customers........................................................... 72
15 Terms, laws, and definitions................................................................ 73
16 Thermographic measurement techniques ............................................ 75
16.1 Introduction ............................................................................ 75
16.2 Emissivity................................................................................ 75
16.2.1 Finding the emissivity of a sample...................................... 75
16.3 Reflected apparent temperature................................................... 79
16.4 Distance ................................................................................. 79
16.5 Relative humidity ...................................................................... 79
16.6 Other parameters...................................................................... 79
17 About calibration............................................................................... 80
17.1 Introduction ............................................................................. 80
17.2 Definition—what is calibration? .................................................... 80
17.3 Camera calibration at FLIR Systems ............................................. 80
17.4 The differences between a calibration performed by a user and
that performed directly at FLIR Systems......................................... 81
17.5 Calibration, verification and adjustment.......................................... 81
17.6 Non-uniformity correction............................................................ 82
17.7 Thermal image adjustment (thermal tuning) .................................... 82
18 History of infrared technology............................................................. 83
19 Theory of thermography..................................................................... 86
19.1 Introduction ............................................................................. 86
19.2 The electromagnetic spectrum..................................................... 86
19.3 Blackbody radiation................................................................... 87
19.3.1 Planck’s law .................................................................. 88
19.3.2 Wien’s displacement law.................................................. 89
19.3.3 Stefan-Boltzmann's law ................................................... 90
19.3.4 Non-blackbody emitters................................................... 91
19.4 Infrared semi-transparent materials............................................... 93
20 The measurement formula.................................................................. 94
21 Emissivity tables ............................................................................... 98
21.1 References.............................................................................. 98
21.2 Tables .................................................................................... 98
#T559828; r. AL/42258/42258; en-US
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