Omega Speaker Systems OS530LE - Manual (Page 51)

The Laser Sighting turns on only when used with the
thermometer. The module does not turn on by itself.
The line of sight of the thermometer does not coincide with that of
the Laser Sighting, as shown in Figure 3-4. The two lines of sight
become less critical when measuring distant targets. For example, at
30 feet from the target and a 3 foot diameter target size, there is a
2.7% offset error with respect to the target size. For close-up targets,
first make sure the target fills the laser circle, then point it with the
center of the beam approximately 1" below the center of the target.
A simple method to make infrared measurements is to scan the laser
beam across the target area vertically and horizontally and recall
measurements of maximum for hot and minimum for cold target
(compared to the background) to obtain the correct temperature.
Figure 3-4 Lines of Sight of the Laser Sighting and Thermometer
Laser Sighting
3
3-4
NOTE