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8.3. 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.
8.3. 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.
Reminders
1. Not recommended for use in measuring shiny or
polished metal surface (stainless steel, aluminium,
etc.) See emissivity.
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