How It Works - PeakTech 4960 Bedienungsanleitung

7. 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 displayed on the unit. In units with a laser, the
laser is used for aiming purposes only.
7.1. 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.
7.2. 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.
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