Oakton 35629-00, Instruction Manual

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8
English
How to Accurately Measure
Temperature
Locating a Hot or Cold Spot
To find a hot or cold spot, aim the ther-
mometer outside the area of interest. Then
scan across the area with an up and down
motion until you locate the hot or cold spot.
Field of View
Make sure that the target is larger than the
unit’s spot size. The smaller the target, the
closer you should be to it. When accuracy is
critical, make sure the target is at least twice
as large as the spot size.
Yes
No
Emissivity
Emissivity is a term used to describe the
energy-emitting characteristics of materials.
Most organic materials and painted or oxi-
dized surfaces have an emissivity of 0.95
(pre-set in the unit). Inaccurate readings can
result from measuring shiny or polished
metal surfaces. To compensate, cover the
surface to be measured with masking tape or
flat black paint. Allow time for the tape or
paint to reach the same temperature as the
the material underneath it. Measure the tem-
perature of the tape or painted surface.