SHEFFIELD, UK 

Leading non-contact temperature measurement specialist, AMETEK Land has unveiled a new innovation for the glass industry: an enhanced thermal imaging Near Infrared Borescope (NIR-B) designed specifically for the use in glass-melt tanks, with an optional auto-retract version for additional instrument protection.

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The enhanced thermal imaging NIR-B provides continuous real-time temperature data combined with a crystal clear thermal video image, allowing a single solution to replace the traditional approaches of visual cameras and periodic hand-held pyrometry. With over 324,000 available temperature measurement points in the field of view the NIR-B Glass solution also can be used to monitor the drift in crown roof thermocouples.

Designed specifically for the glass-melt furnace working environment, the NIR-B Glass is designed to withstand the high ambient temperatures through an integral cooling system, with a specially designed air purge to keep the 90° lens clear of contaminants so the instrument provides 24/7 data to the plant. An optional auto-retract unit is available as additional instrumentation protection in the event of either air purge fail, water cooling fail, power fail, or an over-temperature condition at the probe tip.

The NIR-B Glass solution has been proven to provide an operating plant with the ability to clearly “see” cold spots from air leaks coming through structural refractory, meaning that cracks or collapses are easily detected. This combined with the ability to visualise flames allow the plant to optimise the flame pattern and burn efficiency. The ability to overlay thermal profiles across the crown and along the melt allows for accurate batch line control, production throughput optimisation and batch transit time recording.

Advanced software features allow multiple visual or output alarm controls to be set as specified by the plant. This can be critical in extending the lifespan of the melt tank refractory and in providing greater asset protection through more accurate, remote infrared temperature measurement and live thermal imaging.

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The NIR-B Glass provides an operator access to real-time, continuous data through enhanced thermal video images, combined with highly accurate temperature measurements anywhere within the scene. The end results are increased production efficiency and longer refractory campaign life. Critical areas, like port arches, can be continuously monitored for overheating with automated alarms set for over-temperature conditions. Long-term data trending then allows maintenance planning to be data driven rather than responsive.

The NIR-B image, which can be monitored from the comfort of the control room, features an accurate, high-resolution radiometric thermal imaging camera, which provides high-quality thermal video. This enables precise product control and monitoring.

Thermal imaging inside refractory-lined glass-melt tanks normally requires the plant operator to cut large openings in the refractory to view critical areas. With the NIR-B Glass solution, it is possible to use the proven technology of the NIR-B thermal imager to accurately profile the temperature of the entire furnace with only a small wall opening. The wide 90º horizontal Field of View allows operators to see and measure large scenes using just one device.

AMETEK Land (www.landinst.com) is a business unit of AMETEK, Inc. a leading global manufacturer of electronic instruments and electromechanical devices. It designs and manufactures a wide range of instruments for industrial non-contact temperature measurement, combustion efficiency and environmental monitoring.

The company offers a wide range of process imaging and non-contact infrared temperature measurement products. For additional information, contact AMETEK Land, Stubley Lane, Dronfield, UK, S18 1DJ, tel +44 (0)1246 417691, fax +44 (0)1246 410585, email land.enquiry@ametek.com, website www.landinst.com

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