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Float Glass Industry |
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The measurement of temperature at critical locations in the production process is essential for the full understanding and efficient control of float glass manufacture.
The following illustrations represent some of the locations for these measurements and our recommendations for the best choice of instrument.
If your specific area of interest is not covered here, our engineers will be pleased to discuss your requirements with you.
If you would like more detailed product information please use the Literature Request page.
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Further Information |
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Literature Downloads |
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 1 - Regenerator |
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Accurate and reliable temperature measurement is essential for this
important and vulnerable area of the tank. Thermocouples, despite
their lower initial cost, can rapidly deteriorate. Radiation thermometers
provide a long-term, cost effective and more reliable measurement.
Recommended LAND Systems:-
On-line infrared thermometer System 4 - M1
On-line infrared thermometer System 4 - M1 Fibroptic
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| 2 - Port Arch |
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Measurement of the port arches, especially in cross-fired furnaces,
can provide important information on basic firing conditions, giving
early indication of an incorrect or unbalanced firing situation.
Recommended LAND Systems:-
On-line infrared thermometer System 4 - M1
Portable infrared thermometer Cyclops 100
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| 3 - Tank Roof |
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Thermocouples have been used for many years for this critical
measurement. However, at the high temperatures at which they
operate, deterioration can be rapid and often undetectable due to
contamination of the element and migration of elementary materials
from one wire to the other. LAND Fibroptic thermometers overcome
these problems without the need for water cooling.
Recommended LAND Systems:-
On-line infrared thermometer System 4 - M1
On-line infrared thermometer System 4 - M1 Fibroptic
Portable infrared thermometer Cyclops 100
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| 4 - Tank Outer Surface |
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The condition and safety of the furnace refractories are vitally important,
especially as
the end of a campaign approaches. A LAND thermal
imager or a portable thermometer from the Cyclops range can be used
to make routine checks on key areas of the tank to minimize the
possibility of glass break-out or refractory failure.
Recommended LAND Systems:-
Portable Thermal Imager
On-line Thermal Imager - FTI6
Portable infrared thermometer PockeTherm
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| 5 - Canal |
The choice of thermometer here is dependent on the construction and operation of the canal. Short wavelength
thermometers will measure the bulk temperature of the glass.
Recommended LAND Systems:-
Model FG
On-line infrared thermometer System 4 - M1
On-line infrared thermometer System 4 - M1 Fibroptic
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| 6 - Tin Bath |
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A knowledge of the temperature profile is vital in this area for the
production of consistently high quality glass. When glass is just a
few millimetres thick, selected waveband thermometers operating
in a narrow band around 5µm are used to accurately measure the
surface temperature of the product.
Recommended LAND Systems:-
System 4 - M5 non contact radiation thermometer
Float line thermometer - FLT5
Glass thermometer - JRG/A
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| 7 - Break Detector |
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Measurement here is used to highlight any breakages of the glass.
Acting as a simple 'presence detector', a thermometer placed at this
point aids the complete automation of the process.
Recommended LAND Systems:-
System 4 - M5 non contact radiation thermometer
Float line thermometer - FLT5
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| 8 - Lehr, 9 - Lehr Exit, 10 - Washer |
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As the rate of cooling in the lehr is so important, continuing to
measure the temperature profile is equally important. For temperatures
above 250°C, infrared linescanners or 5µm thermometers are
recommended, but as temperatures fall below 250°C the long
wavelength thermometers or special linescanner should be used, so
extending the capability of measurement down to ambient levels.
Recommended LAND Systems:-
Infrared linescanners - Landscan
Stand alone Infrared Thermometer - RT8A
Float line thermometer - FLT5
Glass thermometer - JRG/A
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| Float Glass Surveys |
The JRG/A is a temperature survey probe for plate and float glass in hot surroundings. It can be used in the float bath to
provide spot temperatures to ensure uniformity of glass temperature gradients.
Recommended LAND System:-
Temperature Survey Probe - JRG/A
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Copyright © 1998-2006 Land Instruments International All rights reserved Infrared Site Map Information updated:
22-Aug-2006
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