optris PI 160 Operator's Manual page 59

Basics of Infrared Thermometry
Infrared thermometers are optoelectronic sensors. They calculate the surface temperature on the basis of
the emitted infrared radiation from an object. The most important feature of infrared thermometers is that
they enable the user to measure objects contactless. Consequently, these products help to measure the
temperature of inaccessible or moving objects without difficulties.
Figure 30: Main principle of noncontact thermometry
Infrared thermometers basically consist of the following components:
•
Lens
•
Spectral filter
•
Detector
•
Electronics(amplifier/ linearization/ signal processing)
59