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9. NOTES:
How it Works
Infrared thermometers measure the surface temperature 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 display n
the unit. In units with a laser, 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 & Spot Size
As the distance (D) from the object increases, the spot size (S) of the
area measured by the unit becomes larger. See: Fig: 1.
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.
