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IDENTIFYING THE TYPE OF LOW-E:
In addition to identifying the location of Low-E coatings, the GC3000 determines the
type of Low-E on your glass application. The meter will specify it as "hard coat" or "soft
coat." If soft coat, the meter will also specify the number of silver-layers as single,
double, or triple, based on the coating's energy performance. If you happen to know
the manufacturer of the glass, in many cases you can identify the exact type of Low-E
coating used to make the window. Here are some examples:
SOFT COAT
(sputtered)
Triple Silver
Double Silver
- Cardinal 366
- Cardinal 270 & 272
- PPG SolarBan 70
- PPG SolarBan 60
- Guardian ClimaGuard 62/27
- AFG TIPS, TIR, & TIAC
- Guardian ClimaGuard 71/38
GLASS THICKNESS RANGE
• Minimum Glass Thickness Allowed: 0.080 inch or 2.0mm
• Minimum Air Space Allowed: 0.187 inch or 4.7mm
• Glass Thickness Allowed for Low-E Readings: up to 0.5 inch or 12.7mm
Triple Pane Windows
The GC3000 will display the thickness of each pane of glass,
the thickness of each air space, and the total IG thickness. De-
pending on the thickness of the glass, the maximum allowable
range for the total IG thickness changes according to the data
below:
Glass Thickness
3/32" or 2.5 mm
5/32" or 4 mm
1/4" or 6 mm
1/2" or 12 mm
Double Pane Windows (including win-
dows with suspended film)
The GC3000 will display the thickness of
each pane of glass, the thickness of each
air space, and the total IG thickness. De-
pending on the thickness of the glass, the
maximum thickness range for the total IG
thickness changes according to the data
below. **Note** these same dimensions
apply when measuring a double pane
window with suspended film.
Glass Thickness
3/32" or 2.5 mm
1/4" or 6 mm
1/2" or 12 mm
Single Pane Glass
The GC3000 will display the thickness of single panes of glass
up to 2.75 inches or 70mm thick.
Suspended Film
Laminated Glass
(
The GC3000 will measure the overall thickness as long as
there is no Low-E coating against the laminate inner-layer. The
laminate assembly can be a single piece or combined into an
insulating unit. The GC3000 will NOT measure the PVB inner-
layer or the individual pieces of glass making up the laminated
glass; it will simply give the overall thickness of the laminated
piece.
HARD COAT
(pyrolytic)
Single Silver
- Cardinal 179
- Pilkington Energy Advantage
- PPG Sungate 100
- PPG Sungate 500
- Guardian ClimaGuard 75/68
- AFG Comfort E2
Maximum Overall Thickness Range
1.9" or 48 mm
2.0" or 50 mm
2.1" or 53 mm
2.5" or 63 mm
Suspended Film
(
Maximum Overall Thickness Range
1.9" or 48 mm
2.0" or 50 mm
2.2" or 55 mm
PVB WITH LOW-E MODE (LAMINATED GLASS WITH LOW-E)
When working with laminated glass that has a Low-E coat-
ing placed against the PVB inner-layer, the Glass-Chek
PRO is capable of helping you identify which surface has
the Low-E coating. To perform this function, the meter must
be switched into "PVB WITH LOW-E" mode (see page 1).
When testing laminated glass with Low-E, the meter will test
laminated pieces of glass alone, and it will also test lami-
nated Low-E glass that has been built into a double pane
window assembly. For double pane window assemblies,
the GC3000 meter must be placed against the side of the
window that contains the laminated Low-E piece of glass.
The first screen that appears will show the thickness of the
overall laminated piece of glass, the air space, the second
pane of glass thickness, and also the overall thickness of
the double pane window assembly. The second screen will
show the make-up of the laminated Low-E piece of glass.
The meter has been designed to add the thickness of the
PVB layer to the thickness of the glass that contains no Low-
E coating. For the piece of glass coated with Low-E, the
meter will display the actual thickness of the glass itself.
This means that the piece of glass that has an abnor-
mal (larger) glass thickness (caused by adding the
PVB layer thickness to the glass thickness) will be the
pane that is clear of any Low-E coating.
The piece of glass that is displayed as a "normal"
thickness (0.124" for example) is the pane that has the
Low-E coating on it.
Pane 1 (0.124") + PVB Layer (0.035") = 0.159" on near side of coating (Screen 2 Line 1)
Pane 1 (0.124") + PVB Layer (0.035") + Pane 2 (0.124") = 0.283" total laminated glass thick-
Total Window Thickness (0.907") (Screen 1 Line 4)
The display examples below correspond with how the meter would read the example
at right. Screen 1 displays the thickness of the entire window. The "PANE 1" result on
the first screen refers to the thickness of the laminated Low-E glass assembly. Screen
2 displays the details of the laminated Low-E glass assembly only. Screen 3 confirms
the presence of a Low-E coating and displays the type of Low-E.
The "normal" thickness of .124" (Screen 2 / Line 3) indicates the Low-E coating is on
the 2nd pane (surface 3) of the laminated portion of the window.
1)
2)
SPECIFICATIONS
POWER SOURCE
PHYSICAL DIMENSIONS
WEIGHT
MAXIMUM LASER OUTPUT
LASER WAVELENGTH
STORAGE TEMPERATURE
OPERATING TEMPERATURE
DISPLAY
ACCURACY:
-High Resolution Mode
Pane 1
0.004 inch (0.1mm)
Air Space
0.012 inch (0.3mm)
Pane 2
0.006 inch (0.15mm)
This product complies with IEC 60825-1 and FDA regulation 21 CFR 1040.10.
The thickness tolerance is calibrated to NIST traceable standard No. 821/268634-03.
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) -- Tolerance specifications for flat glass
When operating the GC300 in "STANDARD" mode, the measurements will be rounded to the nearest standard ac-
cording to the table below:
TRADITIONAL
DESIGNATION
DESIGNATION
mm
inches
3/32 in. (single)
2.5
0.09
1/8 in. (double)
3
0.12
5/32 in.
4
0.16
3/16 in.
5
0.19
1/4 in.
6
0.23
5/16 in.
8
0.32
3/8 in.
10
0.39
1/2 in.
12
0.50
WARRANTY
The manufacturer warrants all models of the GC3000 to be free from defects in material and workmanship
under normal use and service as specified within the operator's manual. The manufacturer shall repair or
replace the unit within twelve (12) months from the original date of shipment after the unit is returned to the
manufacturer's factory, prepaid by the user, and the unit is disclosed to the manufacturer's satisfaction, to be
thus defective. This warranty shall not apply to any unit that has been repaired or altered other than by the
manufacturer. The aforementioned provisions do not extend the original warranty period of the unit which has
been repaired or replaced by the manufacturer. Batteries are not covered by warranty.
The manufacturer assumes no liability for the consequential damages of any kind through the use or misuse
of the GC3000 product by the purchaser or others. No other obligations or liabilities are expressed or implied.
All damage or liability claims will be limited to an amount equal to the sale price of the GC3000, as established
by the manufacturer.
4
PVB Layer
(0.35")
Glass
Surface # 1 2 3 4
ness (Screen 1 Line 1 and Screen 2 Line 4)
Air Space Thickness (.500") (Screen 1 Line 2)
3)
9 volt alkaline battery (NEDA 1604A) only
3.5" x 5.5" x 1.7 inch (89 x 140 x 43mm)
<1mW (2M laser product)
-10 to +60 degrees Celsius
0 to +40 degrees Celsius
-Low Resolution Mode (Default)
Pane 1
0.008 inch (0.2mm)
Air Space
0.012 inch (0.3mm)
Pane 2
0.012 inch (0.3mm)
TOLERANCE
mm min.
mm max.
inches min.
2.16
2.57
0.085
2.92
3.40
0.115
3.78
4.19
0.149
4.57
5.05
0.180
5.56
6.20
0.219
7.42
8.43
0.292
9.02
10.31
0.355
11.91
13.49
0.469
Whole Window
Laminated
Glass
Low-E
(
5 6
0.75 pounds
650 - 680 nm
4 lines X 20 characters
inches max.
0.101
0.134
0.165
0.199
0.244
0.332
0.406
0.531
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