12
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.
Reminders
①
Not recommended for use in measuring shiny or polished
metal surfaces (stainless steel, aluminum, etc.). See
Emissivity.
②
The unit cannot measure through transparent surfaces
such as glass. It will measure the surface temperature of the
glass instead.
③
Steam, dust, smoke, etc., Can prevent accurate
measurement by obstructing the unit’s optics.
Emissivity