5 Operation
from the target, the diameter (spot) of the object under test must be at least 1
inch (2.54 cm). Refer to Figure 5.2.
Figure 5.2 IR spot-to-distance ratio
IR measurement notes:
• The object under test should be larger than the size of the laser beam spot.
• If the surface of the object under test is covered with frost, oil, grime, etc.,
clean the surface before measuring.
• If the surface of the object is highly reflective, apply masking tape or flat black
paint to the surface before measuring.
• The meter may not make accurate measurements through transparent surfa-
ces such as glass.
• Steam, dust, smoke, etc., may obscure measurements.
• To find a hot spot, aim the meter outside the area of interest, then scan across
(in an up and down motion) until the hot spot is located.
WARNING
Do not look directly into the laser beam. The laser beam can cause eye
irritation.
#T559826; r. AD/ 9130/9130; en-US 19
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