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The LED of the color is flashing.
The number displayed (79%) tells you, that the sample does emit only 79% of
the light in the ‘Y’ (green) light spectrum compared to your reference. As a
consequence, there are more fluorescent particles required to match your
reference.
Click the right key to select the next color channel. The color channel
selection will go through all color channels XYZ near followed by XYZ far
restarting with XYZ near again.
Measure a sample in intensity mode [Int]
In case your device has been configured to display the intensity only, there
will be calculated the difference between the reference intensity and the
sample intensity and displayed in terms of a percentage value.
Position the FLUO with the aperture onto a fluorescent surface. Push the
device to the front until the measurement result appears in the LCD. The
measurement value of the currently selected near or far channel is displayed.
The number -21 tells you that the fluorescent intensity of your sample is 21%
lower than the fluorescent intensity of your reference. In order to match your
reference there have to be added fluorescent pigments.
The near intensity measurement is displayed with RGB Led flashing. The far
intensity is displayed with FUV Led flashing.
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