Keywords
Citation
(1999), "New thermometer improves float glass temperature measurement", Sensor Review, Vol. 19 No. 2. https://doi.org/10.1108/sr.1999.08719bad.009
Publisher
:Emerald Group Publishing Limited
Copyright © 1999, MCB UP Limited
New thermometer improves float glass temperature measurement
New thermometer improves float glass temperature measurement
Keyword Temperature
Land Infrared has introduced an improved version of its unique, application-specific JRG thermometer for accurate surface temperature measurement of float glass (see Plate 8).
Plate 8 Land Infrared's JRG/A thermometer custom-built for checking float glass temperatures
The new JRGIA is a convenient means of checking that glass temperatures are uniform or within carefully controlled gradients across the float bath, and during cooling and annealing. Its operating waveband is precisely defined at 4.8 to 5.2 microns, which means that it can be used to monitor very thin glass.
lt is intended for spot temperature surveys during commissioning of new plant, setting-up of a new run and on-going quality control duties.
The JRG/A consists of a miniature radiation thermometer (28mm dia × 43mm long) connected to a water-cooled probe with an air purge that cools the thermometer and keeps the window free from dirt and condensation. Cooling water, compressed air and electrical connections are all carried within twin stainless steel tubes.
Equally suitable as a hand-held instrument or mounted on the production line under automatic control, the JRG/A is easy to manipulate and can be used up to 4.5 metres away from the source of services.
It is accurate, reliable and ruggedly built, and has a fast nominal response time of 1 second to 98 per cent.
The risk of RF interference from nearby production plant distorting its measurements is eliminated by transmitting an amplified non-linear signal to the read-out/recording instruments.
Further enquiries to Tom McDougall, Land Infrared, Dronfield, S18 1DJ, England. Tel: +44 (0)1246 417691; Fax: +44 (0)1246 410585; Email: infrared.sales@landinst.com; URL: http://www.landinst.com