Temperature measurement of aluminium extrusions
June 2005
Temperature Measurement
Land's aluminium extrusion thermometer system (A.E.T.S.) is designed to measure the temperature of aluminium in the extrusion process. It is able to sense infrared radiation in two pairs of two wavelengths. The signals are analysed to provide an accurate measurement of temperature and an indication of the surface finish. It is suitable for use in a 350 to 600°C temperature range and provides accuracy of ±5°C and ±0,02 emissivity.
A.E.T.S. is simple to install and configure in its basic mode of operation, which handles the large majority of extrusion applications. Once determined, special settings can be quickly input to the system either manually or via an RS232C serial link. It also has the power to cope with even the most difficult applications.
The system uses Land's internal auto-calibration technique and provides measurement stability over years of operation. The sensor can be mounted well back from the extrusion press exit, and the product does not need to fill the target area to make an accurate measurement. This allows for easy installation and avoids continual repositioning for different sections.
Both temperature and surface finish indication signals are available from the A.E.T.S. processor. A special quick-adjust mounting, plus a local indicator of signal strength simplifies fixing and precise aiming of the thermometer.
For more information contact Jerry Smits, Protea Automation Solutions, 011 719 5700, jerrys@protea.co.za, www.protea.co.za
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