Urrea UD20 Manual De Usuario página 11

E N G L I S H
5.2 Emissivity
Emissivity is the ability of an object to emit or absorb energy.
Perfect emitters have an emissivity of 1, emitting 100% of
incident energy.
An object with an emissivity of 0.8 will absorb 80% and reflect
20% of the incident energy. Emissivity is defined as ratio of
the energy radiated by an object at given temperature to the
energy emitted by a perfect radiator at the same temperature.
All values of emissivity fall between 0.1 and 1.0.
Noncontact temperature sensors measure IR energy emitted
by the target, have fast response, and are commonly use to
measure moving and intermitent targets, targets in a vacuum,
and targets that inaccessible due to hostile environments,
geometry limitations, or safety hazard. The cost is relatively
high, although in some cases is comparable to contact devices.
6. MAINTENANCE
Cleaning the lens: Blow off loose particles using clean
compressed air. Gently brush remaining debris away with
a camels hair brush. Carefully wipe the surface with a moist
cotton swab. The swab may be moistened water.
Note: DO NOT use solvents to clean the lens.
Cleaning the housing: Use soap and water on a damp sponge
or soft cloth.
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