METRICA 60290S Manual Del Usuario página 11

EMISSIVITY AND INFRARED
TEMPERATURE MEASUREMENT – PRINCIPLE
Infrared thermometer is an instrument that measures the
surface temperature.
The measurement is done through the emission of infrared
rays, and their reflection is converted into energy.
Thermometer converts the electrical signals into temperatu-
re reading and displays the result on the LCD.
The infrared energy released by the object is directly propor-
tional to its temperature and to the emission power
This is called emissivity; it is related to the material and
gloss of the object.
The emissivity value ranges from 0.1 to 1.0. As the same
with our product.
The emissivity of most organic material and paint is 0.95.
In the event that there is a problem please set the emissivity
to 0.95.
EMISSIVITY VALUES OF COMMON MATERIALS
Asphalt ............................................................ 0.90 - 0.98
Concrete ................................................................... 0.94
Sand ........................................................................ 0.90
Cement .................................................................... 0.96
Soil .................................................................. 0.92 - 0.96
Water ............................................................... 0.92 - 0.96
Ice ................................................................... 0.96 - 0.98
Snow ........................................................................ 0.83
Glass ............................................................... 0.90 - 0.95
Ceramic .......................................................... 0.90 - 0.94
Marble ...................................................................... 0.94
Plaster ............................................................ 0.80 - 0.90
Mortar ............................................................. 0.89 - 0.91
Brick ............................................................... 0.93 - 0.96
Cloth (black) ............................................................ 0.98
Skin (human) ............................................................ 0.98
Leather ............................................................ 0.75 - 0.80
Charcoal (powder) ..................................................... 0.96
Lacquer ............................................................ 0.80 - 0.95
Lacquer (matt) .......................................................... 0.97
Rubber (black) ........................................................... 0.94
Plastic ............................................................. 0.85 - 0.95
Timber ....................................................................... 0.90
Paper ................................................................ 0.70 - 0.94
Chromium Oxides ...................................................... 0.81
Copper Oxides ........................................................... 0.78
Iron Oxides ........................................................ 0.78 - 0.82
Textiles ..................................................................... 0.90
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