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Colour light measurement sensor targets process automation

Colour light measurement sensor targets process automation

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By eeNews Europe



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The introduction of colour light sensing technologies within industrial automation environments allows personnel to conduct real-time verifications of colour accuracy, quality and consistency for manufactured light sources and illuminated products, with increased throughput and improved sorting and production efficiencies.

In contrast to traditional optical colour sensors that measure the light reflected from a target, the LEX-1000 proprietary optics focus the light emitted by the product onto a sensitive RGB photodiode, where it is then read and analysed for its respective red, green and blue (RGB) composition. The RGB reading is then automatically compared to pre-programmed parameters. If readings of all three colours fall within these parameters, the LEX-1000 sensor issues a discrete signal to indicate a colour proper match. Supplied PC-based ColorMax Windows application software provides comprehensive sensor configuration capabilities, file management and real-time analysis and evaluation, displaying the measured values as bar graphs (for absolute values) or pie-charts (for relative value).  The sensor is supplied with the software, mounting hardware, interface cables, 12–30 VDC power supply, and an I/O board with status indicators.

The LEX-1000 works with a variety of user-supplied light sources and provides four unique programmable colour recognition channels; three 0–5 V analogue outputs for red, green and blue (RGB); four discrete outputs; and USB or RS-232C serial data output. Tolerance is programmable from 0.5% to 50%, high-speed sampling frequency is 20 kHz, and the recommended operating distance is from 50mm to 600mm, depending upon source intensity.  The sensor offers a fast response time, programmable averaging for 1 to 64 readings, a teach function for RGB values from 1%–100%, and external triggering. Operator lockout prevents unauthorized changes. Additional features include reverse polarity and overcurrent protection, an operating temperature range of -10° to +55°C, and an IP67-rated M30 316 stainless steel housing with a 12-pin IP67-rated connector and glass lens/window for enhanced survivability within demanding environments.

Visit EMX Industries at www.emxinc.com

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