Fluke VT04A User Manual

18 

The Palette menu changes the false-color presentation of the infrared images 
that are on the display or captured. A variety of palettes are available. Some 
palettes are more suitable for specific applications and are set as required.  
Grayscale Palettes offer an equal, linear presentation of colors that allow for 
best presentation of detail. 
The High Contrast palette offers a weighted presentation of colors. This palette 
is best in situations with high thermal contrast for increased color contrast 
between the high temperatures and low temperatures. 
The Ironbow and Rainbow palettes offer a mixture of the High Contrast and 
Grayscale palettes. 

Grayscale (White hot) 

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Grayscale (Black hot) 

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High Contrast 

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Ironbow 

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Rainbow 

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Hot Metal 

 

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The background temperature can be set between -10 °C and +100 °C. 

Compensation for reflected background temperature is set in the Background 
tab. Very hot objects or very cold objects can affect the apparent temperature 
and measurement accuracy of the target or object of interest, especially when 
surface emissivity is low. Adjustment of the reflected background temperature 
can make the temperature measurement better in many situations. For more 
information, see Emissivity on page 14. 

The hot and cold markers turn on and off. When turned on, the marker is an 
indication of a hot or cold spot in the scene that may require additional 
evaluation. When turned off, the user is able to concentrate on the single 
measurement pixel.