measurement and continue to hold the but-
ton while the results are displayed multiple
times. After approximately 40 seconds, the
screen will prompt you to enter set-up mode.
Follow the instructions on the screen. After
going through all of the display options
discussed previously, the meter will then
show the High Resolution screen and the
Low Resolution screen. When the resolu-
tion option you desire appears on the dis-
play, simply release the button. Your meter
is now equipped to operate in the resolu-
tion mode you selected. PLEASE NOTE:
changing the resolution mode WILL NOT
affect the display option you were previously
operating in. For instance if you were in milli-
meter mode before changing the resolution,
the meter will remain in millimeter mode.
IMPROPER GLASS THICKNESS AND AIR
SPACE MEASUREMENT
If the window area un-
der test is excessively
dirty or contaminated,
the GLASS-CHEK+
may give improper re-
sults or issue a warning
message that states:
MEASUREMENT ERROR:
CLEAN, MOVE & RETEST
The window area under test must be REL-
ATIVELY CLEAN. Clean the test area or
move the GLASS-CHEK+ to a clean loca-
tion on the window.
The GLASS-CHEK+ uses
a light/laser beam to mea-
sure the thickness of the
glass and air space. The
unit may be affected by
extremely
bright lights or facing the sun
directly. The screen will display the error
message “EXCESSIVE LIGHT” if this con-
dition occurs. Simply move to a different lo-
cation or go to the other side of the window
or shade the laser aperture. If the window
is operable you may be able to open the
window and reach through the opening to
block the incident light from the back side
of the meter.
The GLASS-CHEK+
must be used with the
surface opposite the
Power button against the
window. Using the small
end surface of the unit
or tilting the unit away
from the surface will give improper results.
The GLASS-CHEK fam-
ily of glass thickness
and air space meters
use a Class 2M laser to
take its measurements.
DO NOT push the power button and point
the instrument laser at a persons’ eyes.
Always check the other side of the window
being tested to ensure that no one will be
looking directly into the laser.
GLASS-CHEK+ IMPROPER LOW-E
OPERATING CONDITIONS
Placing your hand or a
metallic object against the
single lite of glass you are
testing may cause the
GLASS-CHEK+ to yield im-
proper Low-E results. Re-
move your hand or object.
If the window area under
test is excessively dirty
or contaminated, the
GLASS-CHEK+ may give
improper Low-E results.
The window area under
test must be RELATIVE-
LY CLEAN. Clean the test area or move
the GLASS-CHEK+ to a clean location on
the window.
BATTERY & REPLACEMENT
The GC2001 meter is powered by a 9-volt
alkaline battery. When the battery is start-
ing to get low, a warning message will ap-
pear during your results screen that rec-
ommends you replace the battery soon.
This gives the user plenty of warning that a
battery replacement is needed in the near
future. The instrument will still function dur-
ing this period. This is the initial warning
that a battery replacement is encouraged.
Once the battery voltage gets below a dan-
gerous level that could begin impacting the
performance of the instrument, an error
message will appear on the display that tells
you to replace the battery immediately. The
instrument will NOT be able to take mea-
surements once it reaches this level.
CORRECTIVE ACTION
1. Ensure that the GLASS-CHEK+ is placed flat against the
glass surface and that you are testing in the optimal test
location described on page 1.
2. Clean the glass surface or move to a cleaner area of
the glass.
3. Remove dust particles from the laser aperture area on
the back of the GLASS-CHEK+. Use compressed air to
remove any dirt or dust particles from the laser aperture
area.
4. Check that the two window surfaces are relatively par-
allel to each other and to the GLASS-CHEK+ unit.
5. Verify the operating temperature range.
6. If only a partial reading occurs, move to another loca-
tion on the glass or take a reading from the other side.
for cold temperatures:
1. Attempt to keep the unit in a warmer environment until
you are ready to take the readings. The GLASS-CHEK+
will record accurate readings up to the point the elec-
tronics reach the outside temperature which is below
the operating range. Depending on the degree of cold-
ness, this will allow for several readings to be taken.
2. Carry the GLASS-CHEK+ in your pocket or in some
other manner which will keep the unit near a warmer
temperature.
3. Operate the unit several times repeatedly in an attempt
to warm up the die of the laser module itself. This will
work in temperatures which are not greatly beneath the
operating temperature range.
for hot temperatures:
1. Attempt to keep the unit in a cooler environment until
you are ready to take readings. The GLASS-CHEK will
record accurate readings up to the point the electron-
ics reach the outside temperature which is above the
operating range. Depending on the extent of the heat,
several accurate readings should be obtained.
1. Replace the battery with a 9 volt alkaline battery ONLY
(NEDA 1604A).
1. Attempt to block the source of the bright light. If the light
source is on the other side of the window you are test-
ing, move to another location or block the light source.
2. Pointing the GLASS-CHEK+ directly into the sun may
result in an “excessive light” condition. Try rotating the
GLASS-CHEK+ meter to change the angle that the sun
is hitting the laser aperture area on the back side of the
meter.
TROUBLE-SHOOTING GUIDE
PROBLEM
GLASS-CHEK+ displays
error message: “Clean,
Move & Retest” OR a
partial reading occurs.
The temperature where I
need to take readings is
outside the GLASS-CHEK+
operating range.
“REPLACE BATTERY”
appears on the display.
“EXCESSIVE LIGHT”
appears on the display
SPECIFICATIONS
POWER SOURCE
9 volt alkaline battery (NEDA 1604A) only
PHYSICAL DIMENSIONS
3.5” x 5.5” x 1.70 inch (89 x 140 x 43mm)
WEIGHT
0.75 pounds
STORAGE TEMPERATURE
-10 to +60 degrees Celsius
OPERATING TEMPERATURE
0 to +40 degrees Celsius
DISPLAY
2 lines X 20 characters
ACCURACY:
-High Resolution Mode
-Low Resolution Mode (Default)
Pane 1
0.004 inch (0.1 mm)
Pane 1
0.008 inch (0.2 mm)
Air Space
0.012 inch (0.3 mm)
Air Space
0.012 inch (0.3 mm)
Pane 2
0.006 inch (0.15 mm)
Pane 2
0.012 inch (0.3 mm)
MINIMUM GLASS THICKNESS ALLOWED
0.080 inch (2.0 mm)
MINIMUM AIR SPACE ALLOWED
0.187 inch (4.75 mm)
OVERALL THICKNESS RANGE MAXIMUM
Single Pane
2.3 inch (58 mm)
Double Pane with 3/32” (2.5 mm) glass
1.5 inch (38 mm)
Double Pane with 1/4” (6 mm) glass
1.6 inch (40 mm)
Double Pane with 1/2” (12 mm) glass
1.7 inch (44 mm)
GLASS THICKNESS ALLOWED FOR LOW-E READINGS
up to 0.5 inch (12.7 mm)
MAXIMUM LASER OUTPUT
< 1 mW (CLASS 2M laser product)
LASER WAVELENGTH
650 - 680 nm
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
WARRANTY
The manufacturer warrants all models of the GC2001
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 manufacturers factory, prepaid by the user, and
the unit is disclosed to the manufacturers satisfac-
tion, to be thus defective. This warranty shall not ap-
ply to any unit that has been repaired or altered other
than by the manufacturer. The aforementioned provi-
sions 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 conse-
quential damages of any kind through the use or mis-
use of the GC2001 product by the purchaser or oth-
ers. 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 GC2001,
as established by the manufacturer.
DESIGNATION
TOLERANCE
mm
2.5
3
4
5
6
8
10
12
inches
0.09
0.12
0.16
0.19
0.23
0.32
0.39
0.50
mm max.
2.57
3.40
4.19
5.05
6.20
8.43
10.31
13.49
mm min.
2.16
2.92
3.78
4.57
5.56
7.42
9.02
11.91
inches min.
0.085
0.115
0.149
0.180
0.219
0.292
0.355
0.469
inches max.
0.101
0.134
0.165
0.199
0.244
0.332
0.406
0.531
TRADITIONAL
DESIGNATION
single
1/8 in. (double)
5/32 in.
3/16 in.
1/4 in.
5/16 in.
3/8 in.
1/2 in.
2
