Measuring the temperature of Glass in manufacturing and processing application is notoriously difficult and potentially extremely expensive. Whether this is sheet glass or container glass such as jars or bottles we have the Thermal Imaging Technology to overcome these issues.
There are so many applications within the glass industry, all heavily reliant on precise temperature measurement to achieve high levels of quality in the finished product. There are plenty of products available purporting to enable the measurement of glass at various phases but none so simple as the Optris range of thermal imaging cameras and in particular the G7 products.
The G7 refers to a specialised wavelength selected specifically to measure the surface temperature of glass. The wavelength of 7.9 μm is selected such that the emissivity of the glass is ≥0.95 whereas for traditional long wavelength cameras the emissivity is lower. The other advantage for this wavelength is the reduced dependency on measuring angle, allowing the cameras to be mounted at an inclined viewing angle.