Date: 9 October 2020
Temperature monitoring in the glass industry
Glass has been a mainstay of human life for centuries. Be it in the form of jewelry, the facades of buildings, or drinking containers, it comes in every size, shape and color imaginable. The most translucent material places very specific demands on non-contact temperature measuring technology.
As described in detail in our Infrared Basics brochure, reflection and transmittance are serious considerations. Depending on whether one is measuring the surface temperature of the glass, or the temperature within the glass itself, specific infrared thermometers or thermal imaging cameras are recommended by Optris.
The application articles for the use of the PI 450 G7 infrared camera as a line scan camera in glass tempering facilities can be found here.
Below you will find a number of areas of application and the respective product solution.
Thermal imaging cameras are always used when temperature values within an area need to be monitored, for example in the manufacturing of sheet glass.
Measurement of moving objects
Likewise, infrared cameras are used when measurement objects are in motion, for example in the industrial production of glass beads or in packaging and filling plants which have a high output. When the objects always move within an orbit and are only to be measured at individual points instead of across the entire area, an infrared thermometer with high measurement speeds can also be used.
Measurement in confined spaces
In practice, there is often only a very restricted space available for sensors, for example when they are being integrated into machines or systems. For this job there is a specially developed compact series glass pyrometer available.
Measurement of very small objects
IR thermometers enable the measurement of the smallest objects from 1mm in size at a distance of 70 mm. Corresponding special developments for the glass industry enable the precise measurement of glass surfaces, for example in the manufacturing of laboratory glassware.
Measurement through glass
Pyrometers with a special measurement wavelength of 3.9 µm are suited for precise temperature measurement between 200 °C and 1,650 °C through flames and glass. Non-contact IR thermometers are used for the measurement of workpieces in ovens through flames, as well as for the continual temperature monitoring of brickwork in furnaces.
Measurement in hot surroundings
For the harshest conditions in the high temperature field, an infrared thermometer has been developed that can operate without additional cooling at ambient temperatures of up to 250 °C. This can be used in ovens and in closed chambers.
This video shows how Optris helps companies in the glass manufacturing industry ensure a high product quality by monitoring temperature during all production phases.
For more information, visit: https://www.optris.global/glass