5
FIELD OF VIEW
Ensure the target is larger than the unit's spot size. The smaller the target, the
closer the measuring distance. When accuracy is critical, make sure the target is
at least twice as large as the spot size.
EMISSIVITY:
All objects will emit infrared energy (heat) based on its temperature. This is called
Thermal Emissivity. The chart below shows the approximate temperature for
dierent substances. The temperature may be higher or lower depending on
external influences such as sunshine etc. The emissivity on this thermometer is
pre-set to 0.95 and can be adjusted to improve temperature accuracy.
SYMBOLS
The rating plate on your tool may show symbols. These represent important
information about the product or instructions on its use.
Direct current, DC
Waste electrical products should
not be disposed of with household
waste. Please recycle where
facilities exist. Check with your
Local Authority or retailer for
recycling advice.
Refer to instruction manual/
booklet
General warning Regulator compliance mark
THERMAL EMISSIVITY TABLE
Aluminum
Bituminous
Brass
Iron
Limestone
Paint
Asbestos
Basalt
brick
brick
Oil
Paper
EmissivityMaterial Emissivity Material Material MaterialEmissivity Emissivity
0.30
0.95
0.50
0.70
0.98
0.93
0.95
0.70
0.90
0.50
0.94
0.95
Concrete
Carbon
Oil sludge
Hot food
Ice
Snow
Textile
Wood
Frozen
items
Glass
Steel
Water
0.95
0.85
Sand
Plastic
0.90
0.95
Copper
ceramics
0.95
0.95
Skin
Rubber
0.98
0.95
0.94
0.93
0.98
0.90
0.94
0.94
0.90
0.85
0.80
0.93
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