FLIR GF309 User Manual

Table of contents
27.4 Gases that can be detected by FLIR GF306.................................. 235
27.5 Gases that can be detected by FLIR GF320.................................. 239
27.6 Gases that can be detected by FLIR GF343.................................. 242
27.7 Gases that can be detected by FLIR GF346.................................. 242
28 Why do some gases absorb infrared energy? ..................................... 246
29 About FLIR Systems ........................................................................ 249
29.1 More than just an infrared camera .............................................. 250
29.2 Sharing our knowledge ............................................................ 251
29.3 Supporting our customers......................................................... 251
30 Terms, laws, and definitions.............................................................. 252
31 About calibration............................................................................. 254
31.1 Introduction ........................................................................... 254
31.2 Definition—what is calibration? .................................................. 254
31.3 Camera calibration at FLIR Systems ........................................... 254
31.4 The differences between a calibration performed by a user and
that performed directly at FLIR Systems....................................... 255
31.5 Calibration, verification and adjustment........................................ 255
31.6 Non-uniformity correction.......................................................... 256
31.7 Thermal image adjustment (thermal tuning) .................................. 256
32 Thermographic measurement techniques .......................................... 257
32.1 Introduction .......................................................................... 257
32.2 Emissivity.............................................................................. 257
32.2.1 Finding the emissivity of a sample.................................... 257
32.3 Reflected apparent temperature................................................. 261
32.4 Distance ............................................................................... 261
32.5 Relative humidity .................................................................... 261
32.6 Other parameters.................................................................... 261
33 History of infrared technology........................................................... 262
34 Theory of thermography................................................................... 265
34.1 Introduction ........................................................................... 265
34.2 The electromagnetic spectrum................................................... 265
34.3 Blackbody radiation................................................................. 266
34.3.1 Planck’s law ................................................................ 267
34.3.2 Wien’s displacement law................................................ 268
34.3.3 Stefan-Boltzmann's law ................................................. 269
34.3.4 Non-blackbody emitters................................................. 270
34.4 Infrared semi-transparent materials............................................. 272
35 The measurement formula................................................................ 273
36 Emissivity tables ............................................................................. 277
36.1 References............................................................................ 277
36.2 Tables .................................................................................. 277
#T559157; r. AH/45951/45951; en-US
xi

FLIR GF309 Specifications

General

Brand	FLIR
Model	GF309
Category	Thermal cameras
Language	English