Test & measurement
objective control of the colour effect is a decisive factor in consistent, homogeneous quality. Colour sensors from Micro-Epsilon are used in order to inspect glass colours and glass shades in the production process. Combined with an ACS3 transmitted-light sensor head, the ACS7000 colour measuring system detects the exact colour shade of flat and display glasses and then transmits the colour values to the higher-level control system.
HIGH ACCURACY COLOUR MEASUREMENT SOLUTIONS colorSENSOR CFO100 / CFO200 Using a modulated high power white light LED, the CFO100 and CFO200 colour sensors project a white light spot via optical fibre onto the target surface to be inspected. Part of this light is back-scattered and directed onto a perceptive True Colour detector via the same optical fibre. This light is then refracted into long-, medium- and short-wavelength light components and transformed into L*a*b* colour values. High colour accuracy, good reproducibility, high light power and a fast measuring rate enable the sensor to reliably detect the finest of colour graduations, even in high speed measurement
Instrumentation Monthly October 2025
tasks and on low reflecting surfaces. Equipped with optical fibres and focus lenses, the sensor can also be used in tasks where space is restricted, as the sensor head requires minimal space.
colorCONTROL ACS7000 The colorCONTROL ACS7000 identifies colours using any of the XYZ; L*a*b*; L*u*v*; RGB and DIN99 measurement definitions (user selectable). The system can be set up to continually monitor a production process and output the colour measurement via Ethernet, EtherCAT or RS422 and can also be taught pass fail/limits and then output out-of-tolerance alarms using
digital I/O. The system is therefore suitable for a wide range of applications where colours and shades must be examined on-the-fly and to very high accuracies. Existing applications include automotive paint inspection, colour measurement of car interiors, coloured glass, transparent film and sheet production, printing, packaging, medical technology, food, cosmetics, pharmaceuticals and in the processing of plastics, food, wood, paper, veneer and textiles.
SENSOR HEAD SOLUTIONS FOR A WIDE RANGE OF TASKS
The ACS7000 can be equipped with fibre optic heads for monitoring surfaces by reflection using the ACS1 or ACS2 heads or as a thru-beam transmission sensor, ACS3,for use in colour measurements of transparent objects. A transmitter illuminates a (semi-)transparent measurement object. The receiver records the colour while the controller evaluates it. The spectral measuring procedure enables the measurement of colours, shades, contrasts and coatings at high resolutions. .
Micro-Epsilon
www.micro-epsilon.co.uk 41
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