Application Examples – Continued
Page 8
When the potential for laminated glass exists, be sure you are working in LAMINATE MODE. (see page 3&4).
The GC3200 meter will test laminated pieces of glass monolithically, and also in double pane or triple pane
(IG) windows.
The first result screen shows the thickness of all the components comprising the window. See Screen 1
below. This will include each piece of glass, laminate inner layer, and air space. For the laminated glass
illustration to the right, the following result screens would occur. Screen 2 shows the Low E measurement
results. Please note that for the Low E measurement, the GC3200 can confirm there is a low e coating on the
opposite piece of glass, but it can not differentiate if the coating is on Surface 5 versus Surface 6 in this
application. If you need to confirm the exact Low E surface location, you would need to test the opposite side
of the window to confirm this. Also, there are instances when the laminated glass is in the first pane of glass,
where the GC3200 meter will not be able to confirm the type of Low E Coating when it is on G3. Again,
testing the window from the oppostie side would confirm the type of Low E Coating as well.
Screen 3 shows the glass results rounded to the nearest STANDARD value in MM’s, while Screen 4 shows
the same results in MM’s as the ACTUAL value.
.
When testing laminated glass, there are applications where the GC3200 meter will not be able to completely
identify the thickness of the laminate inner layer. When this occurs, the meter will still display the overall
thickness of the laminated glass by showing the results as a combination of G1 + L1 + G2. When this occurs,
the meter was not able to cleanly identify the laminate inner layer surfaces. Screen 4 below shows an
example of how this will appear. When this condition occurs, the meter will add one additional screen to the
rotation of results screens. The additional screen is called the ASSUMPTION SCREEN. If the user knows
that both pieces of glass in the laminated piece are the same thickness, then the meter will show an
assumption screen that presumes G1 = G2. See Screen 6 below. If the user knows that G1 = G2, then the
meter will confirm the glass thickness, as well as provide an estimate of the laminate inner layer thickness. If
the user does not know for sure that G1 = G2, then the user should disregard the assumption screen. NOTE:
If the G1/L1/G2 combination continually appears through multiple measurements on the same window, the
user should attempt a measurement from the other side of the window if possible. A complete set of laminate
thickness values might be possible from the opposite side of the window.
For the BEST RESULTS when testing IG’s, we recommend placing the GC3200 meter on
the side of the window that contains the laminated glass when possible.
Also, it is very important that
the laminated glass you are testing is clean. Because the laminate inner layers are so thin, any dirt or
smudges on the glass can negatively impact the accuracy of the results, or the ability of the meter to detect
the laminate inner layer. Please clean the glass before you take a measurement.
— Measurement Example Five — Laminated Glass
1)
3)
4)
3)
2)
4)
LAMINA
TED GL
AS
S 1 (G1 = 3/
1
6” = 5mm)
LAMINA
TED GL
AS
S 2 (G2 = 3/16” = 5mm)
AIR SP
ACE (A1 = .444” = 7/16” = 11.3mm)
GL
AS
S 3 (G3 = 3/16” = 5mm)
Laminated Glass
Whole Window
Glass Surface #
1 2 3 4
5 6
LAMI Layer
(.030”)
(0.8mm)
Low-E
