Vaughan 240022, Instruction Manual

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EMISSIVITY ADJUSTMENT
Emissivity is the measure of an object’s ability to emit infrared energy . Emitted energy indicates the temperature of the
object . Emissivity can have a value from 0 (shiny mirror) to 1 .0 (blackbody) . An emissivity of 1 .0 implies that the mate-
rial is 100% efficient at radiating energy . An emissivity of 0 .1 implies that the material radiates only 10% of that which
it is capable of radiating . To compensate for deficiency of radiated energy and improve the accuracy of temperature
readings, use the Emissivity chart below to set the Emissivity of the surface which is to be scanned . To set the desired
emissivity:
1 . Briefly press the trigger to turn on the display .
2 . Press and hold the SET button for around 3 seconds to enter into the emissivity adjustment mode .
3 . Select the emissivity value of the scanned material from the chart below .
4 . Set the emissivity value by repeatedly pressing “ ” button to increase the value, or by repeatedly pressing “ ”
button to decrease the value of emissivity .
5 . After setting the emissivity value, press the SET button for a few seconds to save the value in the thermometer mem-
ory and exit the emissivity adjustment mode .
Notes:
• Most organic, painted, or oxidized surfaces have emissivity values close to 0.95. The default emis-
sivity value of the thermometer is set at 0.95 which is suitable for most applications.
• Since the thermometer retains the emissivity setting in its memory, always check for emissivity to
ensure that it is either set to default (0.95) or an emissivity value corresponding to the surface to be
scanned (from Emissivity chart).
Emissivity Of Some Common Materials
Surface Material Emissivity Surface
Material
Emissivity Surface
Material
Emissivity
Aluminum Foil 0 .04 Gold not polished 0 .47 Paint 0 .96
Aluminum Sheet 0 .09 Gold polished 0 .025 Paper 0 .93
Aluminum Oxidized 0 .2 - 0 .31 Granite 0 .45 Plaster, rough 0 .91
Aluminum Polished 0 .039 -
0 .057
Gravel 0 .28 Plastics 0 .90 - 0 .97
Aluminum Anodized 0 .77 Gypsum 0 .85 Polypropylene 0 .97
Aluminum Rough 0 .07 Ice smooth 0 .966 Porcelain glazed 0 .93
Asbestos board 0 .96 Ice rough 0 .985 PVC 0 .91 - 0 .93
Asbestos paper 0 .93 - 0 .945 Iron polished 0 .14 - 0 .38 Quartz glass 0 .93
Asphalt 0 .93 Iron, rusted red 0 .61 Roofing paper 0 .91
Black Body Matt 1 Iron, dark gray 0 .31 Rubber, foam 0 .9
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