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distributor, your supervisor, or you will normally have selected a particular format. For
example, if your unit has been set-up to pick colors from a PANTONE® Color System
4
,
the instrument might display:
The number 17-1842TP is a code that identifies a particular shade of red from a
PANTONE fan deck.
But, if your instrument has been setup to display whiteness in the ASTM E313 format
you may see:
This display provides the location of the stored measurement result, the value of the
index, and a description of which index was calculated.
In the two displays above, the numbers DE*=0341 and WI=-1362 are integer
representations of decimal numbers. To preserve display space the instrument displays
decimal numbers to the second place but does not display decimal points. DE*=0341
should be read as Delta E of 3.41 and WI=-1362 should be read as Whiteness Index of
minus13.62.
Error checking
During a measurement the instrument performs a series of checks to ensure that the
quality of results is acceptable. If the unit determines that the measurement results may
be questionable, it will display a warning message and prompt you to press the square
MODE
key to indicate that the results are acceptable as made.
This message questions whether the sensor is flat on the sample because the measurement
indicates that there may be external light affecting the results. This might also occur
because the measurement was requested before the instrument was “down” on the
sample. This usually occurs when the operator pushed the green key on the way down,
before the instrument was “down” on the sample. It may also occur in conditions of high
external light, for example, in direct sunlight, with translucent samples, or with glossy
samples which are not flat against the sensor. Although the unit attempts to detect these
conditions and warn you, it can only detect these conditions when they are severe, and
these conditions can affect measurements whenever they occur.
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PANTONE
is a registered trademark of Pantone, Inc. Portions
©
Pantone, Inc.
#007 DE*=0341
17-1842TP
#015 WI=-1362
Whiteness (E313)
Press MODE if OK
Down on sample?
