Jetnesss Measurement - Altana BYK color2view Operating Instructions Manual

color2view
Following indices are available:
·
∆Fl: Indicates whether and how much fluorescent energy is emitted. The original
specimen are compared to the specimen after the estimated fluorescence degradation.
·
∆E : Calculates the estimated color difference after the fluorescence of standard and
zero
sample has decayed.
Place instrument on flourescent sample and measure it, see for example
32
Measurement .
The status of the fluorescence detection is signaled via an acoustic and a visual signal.
For the visual signal the status LED on the top of the instrument is used:
·
Status LED = Blue: Fluorescence has been detected.
·
Emitted energy > 1% of excited energy.
·
This must apply to at least 1 of the 12 monochromatic LEDs.
·
Status LED = Pink: Fluorescence exceeds predefined limit.
·
The difference has to be larger than 1/3 of the tolerance due to fluorescence.
·
This tolerance value can be customized in the software smart-chart.
A quantification of the fluorescent light is possible with the "Fluorescence" slider in the software
smart-chart.
A calculation is made for the color data after fluorescence has decayed - for example due to the
impact of sunlight.
4.6

Jetnesss Measurement

The color2view Pro and color2view Pro X can measure the jetness of deep black colors with special
indices.
To switch the instrument into jetness measurement mode the corresponding indices have to be
activated. Go to Configuration > Measurement parameter > Jetness indices.
For blackness / jetness measurement following indices are available:
·
My: Blackness determines the lightness of black without colored undertone.
·
Mc: Jetness determines the color depending black value.
·
dM: Undertone determines the absolute contribution of hue.
·
Undertone +dM = Blue shade
·
Undertone -dM = Brown shade
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BYK-Gardner GmbH
Difference
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