Online Colour Measuring System for Quality Control

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Measuring principle based on spectral imaging

Test & Measurement

Online Colour Measuring System for Quality Control
Online Colour Measuring System for Quality Control

Micro-Epsilon Eltrotec introduces colorCONTROL ACS 7000, the first online colour measuring system. The measuring principle is based on spectral imaging. First, the target is illuminated with white light, then the spectrum of the reflected light is compared to a white reference. The results are used to calculate CIE-xy colour coordinates for wavelengths of 390-780 nm. Spectral imaging is the most accurate method of colour measurement; colour value resolution exceeds ΔE 0.01 for a spectral resolution of 5 nm. Observation characteristics such as illumination source (A, C, D65, D50, D75, E, F4, F7, F11 or customised) and 2°/10° standard observers can be adjusted. The system works contact-free for a distance of up to 55mm with a measuring geometry of 30°/0°.

colorCONTROL ACS 7000 supports three operating modes. The first mode measures the colour difference ΔE to the reference value. A maximum of 15 learned reference colours can be stored. The second mode measures the sample's reflectivity spectrum. The third mode measures colours and displays them in the relevant colour space (XYZ, L*a*b*, L*u*v*). In addition, users can display and track a trend analysis of ΔE / ΔL*, Δa*, Δb* for the individual colours over any period of time. All modes support measurement speeds of up to 2kHz.

The system is operated via a web browser, that also displays relevant measuring parameters, including a black/white balance feature. Process interfaces such as Ethernet / EtherCAT, RS422, USB and Digital I/O are included.

colorCONTROL ACS 7000 supports online and offline measuring. The measuring system is suitable for automotive paint inspections, interior colour measurements, forensics, plagiarism detection; in the processing of plastics, wood, veneers, textiles; and in printing and medical technology.

Posted on April 3, 2012 - (163 views)
Micro-Epsilon Eltrotec GmbH
Heinkelsstraße 2
73066 Uhingen - Germany
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