<\/div>\n
Measuring principle<\/h2>
The shadow measuring principle uses a laser emitter with collimating optics that generates a parallel beam wider than the maximum diameter of the product. The product, positioned at the center of the beam, intercepts the light and creates a shadow which, collected by a receiving lens, is focused onto a digital linear sensor. A subpixel edge-detection algorithm determines the exact position of the edges of the shadow, from which the diameter is obtained with resolution down to 0.1 \u03bcm. Multi-axis systems use heads set at 60\u00b0, 90\u00b0 or 120\u00b0 to cover the whole circumference. <\/p>
Features<\/h2>
Industrial laser diameter gauges cover measuring ranges from a few mm (0.03-2 mm for fine wires) up to 250-500 mm and beyond (large tubes and profiles). Typical accuracy is \u00b10.1-1 \u03bcm on fine wires and \u00b110-50 \u03bcm on medium-sized products. The acquisition rate reaches 500-3000 Hz, allowing measurement on products at extrusion speeds up to 200-300 m\/min. Digital interfaces (Profinet, EtherCAT, Modbus, OPC UA) enable real-time integration with process control systems for automatic adjustment. <\/p>
Applications<\/h2>
Laser diameter systems are used in drawing lines for metal wire (copper, steel, aluminum), in the production of electrical, optical and telecommunication cables (checking the diameter of the conductor, the sheath and the insulation at every stage), in the extrusion of plastic tubes and profiles (PE, PVC, PP, ABS) and rubber ones (flexible hoses, seals), in the rolling of wire rod and bars, and in the production of welding wire, synthetic textile yarn and drawn metal profiles. Continuous dimensional control reduces scrap and allows raw material consumption to be optimized. <\/p>
Integration and functions<\/h2>
The most advanced systems include statistical calculation functions (mean, standard deviation, Cp\/Cpk capability), tracking of the position along the product (with an external encoder), out-of-tolerance alarms, automatic line control (feedback on speed, temperature and extrusion pressure), automatic batch reporting and data archiving for traceability. The mechanical structure of the measuring head is designed for harsh environments (dust, vapors, vibration) with an IP65 protection rating and devices for automatic cleaning of the optical window. <\/p>
Selection criteria<\/h2>
Selecting a laser diameter gauge depends on the nominal measuring range of the product, on the accuracy required (according to the tolerances), on the number of axes needed (1 for a simple diameter, 2-3 for ovality), on the speed of the product, on the ambient conditions and on the need for integration with the line control system. Performance is verified with cylindrical standards certified to ISO 17025 and with Gage R&R trials on the real product. <\/p>","protected":false},"excerpt":{"rendered":"
Laser light diameter gauges for profiles, tubes, wires and cables: static and dynamic measurement.<\/p>\n","protected":false},"author":157040980,"featured_media":0,"parent":19329,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"footnotes":""},"class_list":["post-23432","page","type-page","status-publish","hentry"],"yoast_head":"\n
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