Delta CS24D - Manual (Page 29)

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11. Frequently Asked Questions
Q. How many different target colors can the CS24D sort?
A. The CS24D can be programmed to differentiate up to fifteen (15) colors
simultaneously. Its four discrete outputs are binary-coded to indicate no match (all off) or
1 to 15 outputs.
Q. What if my materials are textured?
A. The CS24D successfully handles a variety of textured, grained, and other difficult
surfaces where other color sensors give inconsistent readings.
Q. Can the CS24D work with patterned materials?
A. The CS24D-02 reads the average color within its sensing area of approximately 12 x
14mm (0.47 x 0.54”). If the pattern is much smaller than this area, the CS24D-02 may
sort consistently. The CS24D series will not “recognize” patterns.
Q. Can the CS24D distinguish between hues of the same color (e.g. light red and dark
red)?
A. Yes, in most cases. If the colors are exactly the same hue, then all of the ratios (Red/
Intensity, Blue/ Intensity, and Green/ Intensity) will be the same, however the amplitude
of the signals will vary. The CS24D uses a special Intensity value to differentiate
between lighter and darker versions of the same colors that makes it less susceptible to
electrical and optical noise. (The Weighting Factors are used to optimize for various
colors—see Optimizing section). Slight hue differences produce small differences in
amplitudes and require consistent sensor-to-target distance and a reasonably clean
environment.
Q. Is it true that the CS24D can distinguish between different materials of the same
color?
A. It depends on the materials. For example, with carpet, vinyl and leather, the CS24D
can separate all three colors in each material type, and also all of the material types from
each other for a total of nine unique Sort outputs.
Q. What if I can’t position the sensor close to the sample?
A. The CS24A-02 handles a sensor-to-object range of 35-60mm (1.50-2.25”) standoff
distance as compared to the 16-25mm (0.63-1.0”) of the CS24D-00. Delta makes other
sensors with standoff distances as long as 5”.
Q. How can I verify that the CS24D will work with my samples?
A. Delta will test your samples for you and send a report showing the performance of the
CS24D on your samples and recommendations for your application. There is no charge
for this testing on new applications. Demonstration units are also available to qualified
customers. Delta’s ColorSense software provides a utility for optimizing to your target
colors and will indicate the performance as a standard deviation.
Q. What outputs are available from the CS24D?
A. The CS24D has four discrete outputs compatible with 12-24 volt discrete inputs.
Q. Does the CS24D require special lighting?
A. No additional lighting is required. The CS24D is completely self-contained with its
own lighting system using high intensity light-emitting diodes (LEDs). No external light