6
How it Works
Infrared thermometers measure the surface tempera-
ture of an object. The unit’s optics sense emitted,
reflected, and transmitted energy, which is collected
and focused onto a detector. The unit’s electronics
translate the information into a temperature reading
which is displayed on the unit. The laser is used for
aiming purposes only.
Field of View
Make sure that the target is larger than the unit’s spot
size. The smaller the target, the closer you should be
to it. When accuracy is critical, make sure the target
is at least twice as large as the spot size.
Distance and Spot Size
As the distance (D) from the object increases, the
spot size (S) of the area measured by the unit
becomes larger.
Locating a Hot Spot
To find a hot spot, aim the thermometer outside the
area of interest, then scan across with an up-and-
down motion until you locate hot spot.
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