Reed Instruments R2160, Инструкция по эксплуатации, Страница: 9 / 20

9
E mis s iv ity
This thermal imager measures infrared energy from the surface of the
object and uses this data to calculate an estimated temperature value.
Surfaces that are good at radiating energy (high emissivity), the emissivity
factor is
≥ 0.90. Shiny surfaces or unpainted metals are not good at
radiating energy (low emissivity) have an emissivity of <0.6. To more
accurately measure materials with a low emissivity, an emissivity correction
is necessary. Emissivity is set directly as a value or from a list of emissivity
values for some common materials.
The following table gives typical emissivity of some materials:
Material Emissivity
Asphalt 0.95
Concrete 0.95
Hard plaster 0.90
Wood (natural) 0.93
Lime Stone 0.98
Ballast chipping 0.95
Paper (every color) 0.95
Plastics non fi lm 0.95
Tissue (fabric) 0.95
Sand 0.90
Glass wool 0.90
Melted asphalt 0.93
Screed/pavement 0.93
Foamed polystyrene 0.94
Material Emissivity
Drywall 0.95
Render 0.94
Smoothing cement 0.90
Lacquer 0.92
Latex paint 0.97
Wallpaper 0.93
Tilling 0.93
Parquet fl oor 0.90
Laminate 0.90
PVC-Floor 0.92
Brick 0.93
Cliff 0.97
Roo fi ng cardboard 0.93
Stucco 0.91
REED Ins t r ume nt s
1-877-849-2127 | info@reedinstruments.com | www.reedinstruments.com