13
IR Measurement Notes
1. The object under test should be larger than the spot (target)
size calculated by the Distance-to-spot ratio diagram (printed
on the side of the meter and in this guide).
2. Before measuring, be sure to clean surfaces that are
covered with frost, oil, grime, etc.
3. If an object's surface is highly reflective, apply masking tape
or flat black paint to the surface before measuring. Allow
time for the paint or tape to adjust to the temperature of the
surface it is covering.
4. Measurements through transparent surfaces such as glass
may not be accurate.
5. Steam, dust, smoke, etc. can obscure measurements.
6. The meter automatically compensates for deviations in
ambient temperature. However, it can take up to 30 minutes
for the meter to adjust to extremely wide changes.
7. To find a hot spot, aim the meter outside the area of interest
then scan across (in an up and down or side to side motion)
until the hot spot is located.
8. IR measurements cannot be made through glass.
