Omega Speaker Systems OS641C-MV-LS User Manual
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4. Emissivity
All objects emit invisible infrared energy. The amount of energy emitted is
proportional to the object's temperature and its ability to emit IR energy. This
ability, called emissivity, is based upon the material that the object is made of
and its surface finish. Emissivity values range from 0.10 for a very reflective
object to 1.00 for a black body. Factory set emissivity value of 0.95, which
cover 90% of typical applications.
5. If the surface to be measured is covered by frost or other material, clean it to
expose the surface.
6. If the surface to be measured is highly reflective, apply masking tape or matt
finish black paint to the surface.
7. If the meter seems to be giving incorrect readings check the front cone. There
may be condensation or debris obstructing the sensor; clean per instructions
in the maintenance section.