Emissivity; Setting The Emissivity; Emissivity Table - Testboy TV 325 Instrucciones De Empleo

setting feature, we do not recommend taking measurements of shiny surfaces such as stainless
steel. You will get more precise measured values if you blacken or tape over the surface to be
measured. Measurements cannot be made through transparent surfaces, like through glass for
example. You will actually measure the surface temperature of the glass instead.

Emissivity

Setting the emissivity

Press the MODE key until "IEI" appears in the lower display row. The required emissivity value
can now be set using the up and down keys.
Press the MODE key to go back to the normal measuring mode.

Emissivity table

The values given in the table can differ in practice due to the surface texture, geometry or other
interfering factors.
Surface
Aluminium
Asbestos
Asphalt
Basalt
Brass (oxidised)
Stone
Carbon
Ceramic
Concrete
Copper (oxidised)
Dirt
Frozen food
Hot food
Glass
Ice
Iron (oxidised)
Lead (oxidised)
Sandstone
Paint
Paper
Plastic (full over 20 μm)
Rubber
®
Testboy TV 325
Emissivity
0.30
0.95
0.95
0.70
0.50
0.90
0.85
0.95
0.95
0.95
0.94
0.90
0.93
0.85
0.98
0.70
0.50
0.98
0.93
0.95
0.95
0.95
Emissivity
25