koban KTIR-1050 Manual De Operación página 79

KTIR-1050
Non-Contact Infrared Thermometers
③ Steam, dust, smoke, etc., Can prevent accurate
measurement by obstructing the unit's optics.
Emissivity
Emissivity
energy-emitting characteristics of materials.
Most (90% of typical applications) organic materials
and painted or oxidized surfaces have an emissivity of
0.95 (pre-set in the unit). Inaccurate readings will result
from measuring shiny or polished metal surfaces. To
compensate, cove the surface to be measured with
masking tape or flat black paint. Allow time for the tape
to reach the same temperature as the material
underneath it. Measure the temperature of the tape or
painted surface.
Emissivity Values
Substance
Asphalt
Concrete
Cement
Sand
18
is a term
Thermal
emissivity
0.90 to 0.98
0.94
0.96
0.90
used to describe
Substance
Cloth (black)
Human skin
Lather
Charcoal
www.grupotemper.com
the
Thermal
emissivity
0.98
0.98
0.75 to 0.80
0.96