Emissivity; Reminders - Amprobe IR-710 Mode D'emploi

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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°C / 302°F ) 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.

Reminders

1. Changes of surrounding ambient temperature can result in inaccurate
readings. Allow time for the instrument to adapt to the change in ambient
temperatures before use. Specified accuracy applies after 30 minutes when
the instrument changes to a different environment ambient tempersture.
2. The instrument cannot measure through transparent surfaces such as glass.
It will measure the surface temperature of the glass instead.
3. Not recommended for use in measuring shiny or polished metal surfaces
(stainless steel, aluminum, etc.). See Emissivity.
4. Steam, dust, smoke, etc., can prevent accurate measurement by obstructing
the instrument's optics.
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