Micro-Epsilon Eltrotec colorControl ACS 7000 colour measuring system

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The colorControl ACS 7000 from Micro-Epsilon Eltrotec is an online colour measuring system. It is suitable for automotive paint inspections and interior colour measurements; in the processing of plastics, wood, veneers, textiles; and in printing and medical technology.

The system uses spectral imaging, where the spectrum of reflecting light is compared to the white light reference that illuminates the target. Colour value resolution exceeds ΔE 0.01 for a spectral resolution of 5 nm.

The 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*). The results are used to calculate CIE-xy colour coordinates for wavelengths of 390-780 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. 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 2 kHz. The system works contact-free for a distance of up to 55 mm with a measuring geometry of 30°/0°.

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