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8
Operation
8.7.2 Palette
8.7.2.1 General
You can change the palette that the camera uses to display different temperatures.
Available options for the palette setting:
•
Hot Iron
•
Rainbow
•
Grayscale
8.7.2.2 Procedure
Follow this procedure:
1. Push the
button to display the Settings menu.
2. Use the
buttons to go to the
3. Push the
button to toggle through the options.
4. Push the
button to exit the Settings menu.
8.7.3 Emissivity
8.7.3.1 General
Emissivity is a measure of the amount of radiation coming from an object, compared with
that from a perfect blackbody of the same temperature.
Emissivity values normally range from 0.1 to 0.95. A highly polished (mirror) surface falls
below 0.1, while an oxidized or painted surface has a higher emissivity. Oil-based paint, re-
gardless of its color in the visible spectrum, has an emissivity of over 0.9 in the infrared.
Human skin has an emissivity of 0.97–0.98. Non-oxidized metals represent an extreme
case of perfect opacity and high reflexivity, which does not vary greatly with wavelength.
Consequently, the emissivity of metals is low—only increasing with temperature. For non-
metals, emissivity tends to be high, and decreases with temperature.
For accurate measurements, you must select the correct emissivity setting. You can select
one of the preset emissivity values or a custom value. For a list of emissivity data for differ-
ent materials, see section 16 Emissivity tables, page 43.
Available options for the emissivity setting:
#T559974; r.33562/33594; en-US
icon.
17
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