CT103
CARACARAT BALANCEST BALANCES
2
CT103, CT503
Electronic Carat Scales
Operating Instructions
GERMAN
PRODUCT
YEARS WARRANTY
1
Getting Started
Storage and Shipping Conditions
Do not expose the scale to shocks, vibrations, moisture
or extreme temperatures.
Unpacking the Scale
l Place the components
listed below inside the
chamber in the order given:
– Shield plate
– Shield ring
– Pan support
– Weighing pan
– Gem tray (not shown)
l After unpacking the scale, check it immediately for
any visible damage as a result of rough handling during
shipment.
If you see any sign of damage, proceed as directed in
the chapter entitled “Care and Maintenance,” under the
section on “Safety Inspection.”
Save the box and all parts of the packaging until you have
successfully installed your scale. Only the original packaging
provides the best protection for shipment. Before packing
your balance, unplug all connected cables to prevent
damage.
Equipment Supplied
The equipment supplied includes the components
listed below:
– Scale
– Weighing pan
– Pan support
– Shield ring
– Shield plate
– Gem tray
– AC adapter
– Dust cover
– Operating instructions
Installation Instructions
Your scale is designed to provide reliable weighing results
under normal ambient conditions. When choosing a
location to set up your scale, observe the following so that
you will be able to work with added speed and accuracy:
– Set up the scale on a stable, even surface
– Avoid placing the scale in close proximity to a heater
or otherwise exposing the balance to heat or direct
sunlight
– Protect the scale from drafts that come from open
windows or doors
– Avoid exposing the scale to extreme vibrations during
weighing
– Protect the scale from aggressive chemical vapors
– Do not expose the scale to extreme moisture over long
periods
Connecting the Scale to
AC Power/Safety Precautions
Use only original AC adapters:
– for Europe: 6971948
– for the US: 6971947
– for the RSA: 6971949
– for Australia: 6971950
l Insert the right-angle plug
into the jack
l The AC adapter rated to Class 2 can be plugged
into any wall outlet without requiring any additional
safety precautions
The ground is connected to the scale housing, which can be
additionally grounded for operation.
Leveling the Scale
Level the scale any time you
set it up in a new location.
Use only the 2 front feet of the
scale for leveling.
l Turn the 2 front feet as
shown here in the
illustration until the air
bubble is centered in the
level indicator
> In most cases this will
require several
adjustment steps
Anti-theft Locking Device
To protect against theft, use
the mounting lug on the rear
panel of the scale.
l Secure the scale at the
place of installation,
for example with a chain
or a lock
Conditioning the Scale:
Moisture in the air can condense on the surfaces of
a cold scale whenever it is brought into a substantially warmer place. If you transfer the scale to a warmer
area, make sure to condition it for about 2 hours at room
temperature, leaving it unplugged from AC power.
Setting up the Scale
2
Operating the Scale
Basic Weighing Function
Available Features
– Taring the scale
You can tare the scale within the entire weighing range.
Preparation
l Turn on the scale: Press [ON/OFF]
l To change configurations: See the chapter entitled
“Configuring the Scale”
l To load factory-set configurations:
See “Configuring the Scale,” parameter 9 -1
$ To tare the scale: Press t
Additional Functions
Calibration/Adjustment*
Always calibrate/adjust the scale after setting it up in a new
location.
Available Features
Calibration/adjustment can only be performed when
– there is no load on the scale,
– the scale is tared,
– the internal signal is stable.
If these conditions are not met, an error message
is displayed.
The weight required for calibration/adjustment is displayed.
Example
Calibrate the scale
Menu code settings: Factory-set codes
Step Key (or instruction) Display
l To turn off the scale: Press [ON/OFF]
Warmup Time
To deliver exact results, the scale must warm up for
at least 30 minutes after initial connection to AC power.
Only after this time will the scale have reached the
required operating temperature.
Example
Basic weighing
Menu code settings: Factory-set codes
Step Key (or instruction) Display
1. Turn on the scale [ON/OFF]
Self-test is performed
2. Place container on scale + 52.000 ct
(here: 52 ct)
3. Tare the scale t + 0.000 ct
4. Place sample in container +150.210 ct
on scale (here: 150.210 ct)
1. Turn on the scale [ON/OFF]
2. Tare the scale t 0.000 ct
3. Begin calibration [CAL/CF] +100.000
Calibration weight
is displayed without
weight unit (here: 100 g)
4. Place the indicated 100.000
calibration weight
on the scale
After calibration, the +500.000 ct
calibration weight
is displayed with wt. unit
5. Remove the 0.000 ct
calibration weight
* “Calibration” technically means to determine the difference between
the scale readout and the actual weight on the pan to determine
the accuracy. Adjustment means to bring a scale into the state of accuracy
required for its use. Therefore, “calibration,” as used in this manual,
actually means “adjustment.”
3
Application Programs
Counting
Purpose
With the Counting program you can determine the number
of parts that each have approximately equal weight.
Available Features
– Store the current weight value to have it loaded as the
preset reference sample quantity next time you initialize
the Counting application
– The reference sample quantity can be changed in the
operating menu: See “Configuring the Scale”
– The average piece weight is automatically output via the
optional data interface port after initialization, if the menu
code for “Printout with data ID codes” is set
– Press [FUNCTION] to toggle the display between piece
count and weight
Factory Settings
Reference sample quantity: 10 (menu code 3. 3. 2)
Preparation
l Configure the Counting application in the
operating menu:
See “Configuring the Scale”
Menu code 2. 1. 4 Counting
l Reference sample quantity:
Menu code 3. 3. 1 5 pcs
Menu code 3. 3. 2 10 pcs
Menu code 3. 3. 3 20 pcs
Menu code 3. 3. 4 50 pcs
Menu code 3. 3. 5 100 pcs
See also “Configuring the Scale”
Example
Determine an unknown piece count; weigh the preset
reference sample quantity
Settings (changes in the factory settings required for
this example):
Menu: Application program: Counting (2 .1. 4)
Reference sample quantity: 20 pcs (3. 3. 3)
Step Key (or instruction) Display
1. Turn on the scale [ON/OFF]
2. Tare the scale t 0.000 ct
3. Display the reference [FUNCTION] ref 20 (briefly)
sample quantity > 2 sec.
(here: 20 pcs)
4. Place the reference + 16.000 ct
sample quantity
(20 pcs) on the
scale (here: 16 ct)
5. Start the application; [FUNCTION] + 20 pcs
if the print format is set
to include data ID codes,
the following is printed wRef + 0.8000 ct
6. Weigh uncounted parts + 174 pcs
(here: 174 pcs)
7. Display weight [FUNCTION] +139.200 ct
8. Display quantity [FUNCTION] + 174 pcs
9. Unload the scale 0 pcs
10. Delete the reference
value [CAL/CF] > 2 sec.
11. Repeat the procedure
starting from Step 6,
if desired.
Weighing in Percent
Purpose
This application program allows you to obtain weight
readouts in percent which are in proportion to a reference
weight.
Available Features
– Store the current weight value to have it loaded as the
preset reference percentage next time you initialize the
Weighing in Percent application
– The reference percentage can be changed
in the operating menu: See “Configuring the Scale”
– The reference percentage is automatically
output via the optional data interface port after
initialization, if the menu code for “Printout
with data ID codes” is set
– Press [FUNCTION] to toggle the display between
percentage and weight
Factory Settings
Reference percentage: 10 (menu code 3. 3. 2)
4
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