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Emissivity and Field of View
Emissivity:
Emissivity is a term used to describe the
energy emitting characteristics of a material. The
higher the emissivity value a material has, the more
infrared energy it will emit at a particular temperature.
Most organic materials range in emissivity between
0.85 and 0.98. This thermometer has a fixed
(non-adjustable) emissivity of 0.95. Measuring objects
with an emissivity of less than 0.95 will result in a lower
than actual temperature reading on the display. Be
aware of this characteristic when measuring low
emissivity objects (e.g. shiny, reflective metal objects).
An effective solution is that using the black adhesive
tape to cover the object surface, taking the
measurement when the adhesive tape’s temperature is
the same as the object.
Field of View:
The distance to spot ratio for this
thermometer is 2:1. The ideal working range of the
noncontact thermometer is between 25mm and
