User's Manual

Table Of Contents
16331 Glossary ...........................................................................................................................................
16732 Thermographic measurement techniques ...................................................................................
16732.1 Introduction ..........................................................................................................................
16732.2 Emissivity ..............................................................................................................................
16832.2.1 Finding the emissivity of a sample .......................................................................
16832.2.1.1 Step 1: Determining reflected apparent temperature .......................
17032.2.1.2 Step 2: Determining the emissivity ...................................................
17132.3 Reflected apparent temperature ..........................................................................................
17132.4 Distance ................................................................................................................................
17132.5 Relative humidity ..................................................................................................................
17132.6 Other parameters ..................................................................................................................
17233 History of infrared technology ......................................................................................................
17634 Theory of thermography ................................................................................................................
17634.1 Introduction ...........................................................................................................................
17634.2 The electromagnetic spectrum ............................................................................................
17734.3 Blackbody radiation ..............................................................................................................
17834.3.1 Planck’s law ..........................................................................................................
17934.3.2 Wien’s displacement law ......................................................................................
18134.3.3 Stefan-Boltzmann's law .........................................................................................
18234.3.4 Non-blackbody emitters .......................................................................................
18434.4 Infrared semi-transparent materials .....................................................................................
18635 The measurement formula .............................................................................................................
19236 Emissivity tables .............................................................................................................................
19236.1 References ............................................................................................................................
19236.2 Important note about the emissivity tables ..........................................................................
19336.3 Tables ....................................................................................................................................
Publ. No. T559598 Rev. a554 ENGLISH (EN) September 27, 2011 xi