Distance & Spot Size
As the distance (D) from the object
increases, the spot size (S) of the area
measured by the unit becomes larger.
The relationship between distance and
spot size is 12:1 at the focus point
(0.914 meter/36 inches). The spot
sizes indicate 90% encircled energy.
Laser Sighting
With single point laser sighting, the
laser point shows the center of the area
measured.
Reminders
When measuring at short distances (.5 meters or 1.5 feet), be sure to point the
■
thermometer using the sighting guides on the top of the unit, to compensate for
the offest of the laser circle.
Not recommended for use when measuring shiny or polished metal surfaces
■
(stainless steel, aluminum, etc.). See "Emissivity" for measuring these surfaces.
The unit cannot measure through transparent surfaces such as glass or plastic. It
■
will measure the surface temperature of these materials instead.
Steam, dust, smoke, or other particles can prevent accurate measurement by
■
obstructing the unit's optics.
38mm @
75mm @
300mm
900mm
D
12
=
S
1
1.5"
@ 36"
@ 12"
English
132mm @
1500mm
S
3"
5.3" @
60"
D
7