Retrotec USACE - Manual (Page 338)

G8 ENERGY & PROCESS ASSESSMENT PROTOCOL
G.3 The Electromagnetic Spectrum
0.4 13 µm 1 µm 0.7 2 µm 5 µm 10 µm
Visible
1 km 100 m 10 m 1m 100mm 10m 1mm 100µm 10µm 1µm 0.1µm 0.01µm 10 Е 1 Е 0.1 Е
X- r a y G a m m a Micro -
waves UV I I R R - - I I n n f f r r a a r r e e d d
Radiowaves
Thermal infrared
SW LW
Figure G4. The electromagnetic spectrum. (Figure from Infrared Training Center.)
Infrared radiation is electromagnetic radiation with wavelengths longer than
visible light (Figure G4). Historically, two wavelength bands have been used for
the cameras available to the building science thermography: 3–5 µm (shortwave
FLUKE Ti40
Temperature Range: –20 to +120 °C (–4 to 248 °F) •
Thermal sensitivity: 0.05 °C at 50 °C (0.09 °F at 86 °F) •
Detector resolution: 320 × 240 •
Field of view/min focus distance: 23° × 17°/0.15 m •
Spatial resolution (IFOV) 1.3 mrad •
1280 × 1024 visual camera •
Size: 162 Ч 262 Ч 101 mm (6.4 Ч 10.3 Ч 7.9 in.) •
Weight: 1.95 kg (4.3 lb) •
FLIR ThermaCAM® B660
Temperature Range: –40 to +120 °C (–40to 248 °F) •
Thermal sensitivity: 0.045 °C (0.08 °F) •
Detector resolution: 640 × 480 •
Field of view/min focus distance: 24° × 18°/0.3 m •
Spatial resolution (IFOV) 0.65 mrad •
3.2 megapixel visual camera •
Size: 120 mm × 145 mm × 220 mm •
Weight: 1.7 kg (3.75 lb) •
TABLE G2. SOME TYPICAL IR CAMERAS USED FOR BUILDING ASSESSMENTS. (Continued)