Sparklike Handheld NOVA™ can measure certain coated and laminated double glazed insulating glass units, but there are limitations depending on the glass structure.
Low-E coatings:
Yes. Handheld NOVA™ can measure double glazed insulating glass units with one Low-E coating, provided the other pane is clear glass. The measurement must always be taken through the clear side, as Low-E coatings reflect the light emission used in spark emission spectroscopy.
Laminated glass:
Handheld NOVA™ can measure through thin laminated glass under specific conditions:
- Typically one or two interlayers of 0.38 mm each (e.g. 3+3 mm or 4+4 mm glass)
- Higher gas fill rates improve spark penetration (Measurement range: 50 – 100 %).
- Measurement should be taken close to the spacer for best accuracy
- The spark must be visible during measurement
Laminated units with multiple interlayers or excessive thickness may not produce reliable results.
For insulating glass units with multiple coatings, complex laminations, or triple glazing, Sparklike recommends using a Sparklike Laser device, which measures through coatings and laminations using laser (TDLAS) technology.