Emissivity - Egatronic 51261 Manual De Instrucciones

EMISSIVITY

Emissivity describes the energy-emitting characteristics of materials. Most organic materials and
painted or oxidized surfaces have an emissivity of about 0.95.
If possible, to compensate for inaccurate readings that may result from measuring shiny metal
surfaces, cover the surface to be measured with masking tape or flat black paint (<150 ºC/ 302 ºF)
and use the high emissivity setting. Allow time for the tape or paint to reach the same temperatures
as the surface beneath it. Measure the temperature of the tape or painted surface.
If you cannot use paint or use tape, then you could improve the accuracy of your measurements
with the emissivity selector. Even with emissivity selector, it can be difficult to get a completely
accurate infrared measurement of a target with a shiny or metallic surface.
The Thermometer allows you to adjust the unit's emissivity for the type of surface before
measured.
Refer to Table 2. But it is only a typical case. You could base on your own case and materials to
have different setting.
To adjust values for emissivity, follow the below procedure:
1. Press SET to select emissivity set up, icon E on the display is blinking. The Thermometer steps
through emissivity set up, trigger lock and switching ºC/ºF.
2. Press to increase the value by 0.01 or press and hold
maximum value is 1.00.
3. Press to decrease the value by 0.0 or press and hold
minimum value is 0.10.
Measure Surface
Oxidized
Alloy A3003
Oxidized
Roughened
Burnished
Oxidized
Oxidized
Electrical Terminal Blocks
Oxidized
Sandblasted
Electoropolished
Table 3. Surface Emissivity
Aluminum
Alloy
to access quick setting. The
to access quick setting. The
METALS
Brass
Copper
Haynes
Inconel
Swich Setting
0.2-0.4
0.3
0.1-0.3
0.3
0.5
0.4-0.8
0.6
0.3-0.8
0.7-0.95
0.3-0.6
0.15
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