Glass | Solutions for Low-E Glass Tempering

Necessity of Referencing

All kinds of glass, coated and uncoated, change their emissivity behavior in dependency of the angle of view. Especially low-E coatings show an unusual behavior. For a reliable and reproducible temperature measurement a referencing from underneath (uncoated glass surface) is necessary.

Process temperature: 50 °C to 600 °C


  • Top down system with additional reference pyrometer from underneath for automatic emissivity correction
  • Digitally controlled lens protection system (DCLP) avoids extra air purging
  • Glass area calculation
  • Pre-assembled system for easy installation as retrofit on glass tempering furnaces
  • Automatic scan line adjustment – insensitive to distortions
Measurement areas at SPSG production
Measurement areas at SPSG production

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