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BESANTEK
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IR Theory
IR thermometers measure the surface temperature of an object.
The meter's optics sense emitted, reflected, & transmitted energy
that is collected and focused onto the meter's detector. The
meter
'
s circuitry translates this informat
i
on into an LCD reading.
IR Field of V
i
ew
Ensure that the desired target is larger than the spot size as
shown in the diagram below
.
As the distance from an object
increases, the spot size of the area measured by the meter
becomes larger. The meter's fie
l
d of view ratio is 8:1, meaning
that if the meter is 8 inches from the target
,
the diameter (spot) of
the object under test must be at least 1 inch. Other distances are
shown below in the field of view diagram.
