CARAT
CARAT BALANCES
CT103, CT503
Electronic Carat Scales
Operating Instructions
G ERMAN
P R O D U C T
2
YEARS WARRANTY
1
Getting Started
l Place the components
Storage and Shipping Conditions
listed below inside the
chamber in the order given:
Shield plate
Shield ring
Pan support
Weighing pan
Gem tray (not shown)
Unpacking the Scale
–
–
–
–
–
l After unpacking the scale, check it immediately for
any visible damage as a result of rough handling during
shipment.
Connecting the Scale to
AC Power/Safety Precautions
Do not expose the scale to shocks, vibrations, moisture
or extreme temperatures.
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.
–
–
–
–
for Europe:
for the US:
for the RSA:
for Australia:
6971948
6971947
6971949
6971950
l Insert the right-angle plug
into the jack
l The AC adapter rated to Class 2 can be plugged
Equipment Supplied
The equipment supplied includes the components
listed below:
–
–
–
–
–
–
–
–
–
Use only original AC adapters:
Scale
Weighing pan
Pan support
Shield ring
Shield plate
Gem tray
AC adapter
Dust cover
Operating instructions
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
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
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
Calibration/Adjustment*
Operating the Scale
Always calibrate/adjust the scale after setting it up in a new
location.
Basic Weighing Function
Available Features
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
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.
“Configuring the Scale”
Example
l To load factory-set configurations:
See “Configuring the Scale,” parameter 9 -1
Calibrate the scale
$ To tare the scale: Press t
Menu code settings: Factory-set codes
Additional Functions
Step
Key (or instruction) Display
l To turn off the scale: Press [ON/OFF]
1. Turn on the scale
[ON/OFF]
2. Tare the scale
t
3. Begin calibration
[CAL/CF]
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
After calibration, the
calibration weight
is displayed with wt. unit
Menu code settings: Factory-set codes
Step
Key (or instruction) Display
1. Turn on the scale
[ON/OFF]
5. Remove the
calibration weight
Self-test is performed
2. Place container on scale
(here: 52 ct)
3. Tare the scale
4. Place sample in container
on scale (here: 150.210 ct)
t
+
52.000
ct
+
0.000
ct
ct
+100.000
Calibration weight
is displayed without
weight unit (here: 100 g)
4. Place the indicated
calibration weight
on the scale
Basic weighing
0.000
100.000
+500.000 ct
0.000
ct
* “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.”
+150.210 ct
3
Application Programs
Counting
Example
Determine an unknown piece count; weigh the preset
reference sample quantity
Purpose
Settings (changes in the factory settings required for
this example):
With the Counting program you can determine the number
of parts that each have approximately equal weight.
Menu: Application program: Counting (2 .1. 4)
Reference sample quantity: 20 pcs (3. 3. 3)
Step
Available Features
–
Store the current weight value to have it loaded as the
preset reference sample quantity next time you initialize
the Counting application
Key (or instruction) Display
1. Turn on the scale
[ON/OFF]
2. Tare the scale
t
[FUNCTION]
> 2 sec.
0.000
ref
20
ct
–
The reference sample quantity can be changed in the
operating menu: See “Configuring the Scale”
3. Display the reference
sample quantity
(here: 20 pcs)
–
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
4. Place the reference
sample quantity
(20 pcs) on the
scale (here: 16 ct)
+
16.000
–
Press [FUNCTION] to toggle the display between piece
count and weight
5. Start the application;
[FUNCTION]
if the print format is set
to include data ID codes,
the following is printed
+
20
pcs
wRef
+
0.8000 ct
6. Weigh uncounted parts
(here: 174 pcs)
+
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
Menu code 3. 3. 2
Menu code 3. 3. 3
Menu code 3. 3. 4
Menu code 3. 3. 5
5 pcs
10 pcs
20 pcs
50 pcs
100 pcs
See also “Configuring the Scale”
174
(briefly)
ct
pcs
7. Display weight
[FUNCTION]
+ 139.200 c t
8. Display quantity
[FUNCTION]
+
174
pcs
0
pcs
9. Unload the scale
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
Preparation
Available Features
l Configure the Weighing in percent application
–
The measured result displayed is the arithmetic mean
shown in the selected weight unit; a triangle under
the plus or minus sign indicates that this is a calculated
value
l Reference percentage:
–
You can set the number of subweighing operations
performed in the operating menu:
See “Configuring the Scale”
–
Press [FUNCTION] for at least 2 sec. to display
the pre-set number of subweighing operations
–
Press [FUNCTION] to toggle the display between
the calculated result and the weight
in the operating menu:
See “Configuring the Scale”
Menu code 2. 1. 5
Weighing in percent
Menu code 3. 3. 1
Menu code 3. 3. 2
Menu code 3. 3. 3
Menu code 3. 3. 4
Menu code 3. 3. 5
5%
10 %
20 %
50 %
100 %
See also “Configuring the Scale”
Example
Determine an unknown percentage; store the weight on the
scale as a reference percentage
Settings (changes in the factory settings required for
this example):
Menu: Application program: Weighing in percent (2.1.5)
Menu: Reference percentage 100 % (3.3.5)
Step
Number of subweighs for averaging:10 (3. 3. 2)
Preparation
l Configure the Averaging application
Key (or instruction) Display
–
1. Turn on the scale
[ON/OFF]
2. Tare the scale
t
3. Display the reference
percentage
[FUNCTION]
> 2 sec.
ref100
4. Place the reference
weight for
100% on the scale
(here: 222.5 ct)
+
222.500
0.000
ct
in the operating menu:
See “Configuring the Scale”
Menu code 2. 1.12
Averaging
Number of subweighs for averaging:
3. 3. 1
5 subweighs
3. 3. 2
10 subweighs
3. 3. 3
20 subweighs
3. 3. 4
50 subweighs
3. 3. 5
100 subweighs
See also “Configuring the Scale”
ct
Example
5. Start application;
[FUNCTION]
if the print format is set
to include data ID codes,
the following is printed
+
6. Place an unknown
weight on the scale
(here: 322.5 ct)
+
100.00
Wxx%
+
%
222.500
144.94
[FUNCTION]
+ 322.500 c t
8. Display percentage
[FUNCTION]
+
9. Unload the scale
ct
%
7. Display weight
10. Delete the reference
percentage
Factory Settings
144.94
%
0.00
%
[CAL/CF] > 2 sec.
11. Repeat the procedure
starting from Step 6,
if desired.
Averaging
Determine the weight of a sample in extremely unstable
ambient conditions by calculating the average of 10
subweighing operations.
Settings (changes in the factory settings required for this
example):
Menu: Application program: Averaging (menu code 2. 1.12)
Step
Key (or instruction) Display
1. Turn on the scale
[ON/OFF]
2. Tare the scale
t
3. Display the number
of subweighs (here: 10)
[FUNCTION]
> 2 sec.
4. Place sample on the scale
(weight readout fluctuates;
here: around 275 ct)
5. Start measurement
[FUNCTION]
0.000
ref 10
+
8888
+
8888
10
9
8
Purpose
Use this program to determine weights under unstable
ambient conditions. In this program, the scale calculates
the weight as the average value from a defined number of
individual weighing operations. These weighing operations
are also known as “subweighing operations” or
“subweighs.”
ct
(briefly)
...
1
After 10 subweighs
+ 275.500 ct
If the print format is set
to include data ID codes,
the following is printed
RES
+
275.500
+ 275.500 ct
6. Unload the scale
G
g
G
(stable display)
7. Delete the result
[CAL/CF] > 2 sec.
8. Repeat the procedure starting
from Step 4, if desired.
5
Net-Total Formulation/
Second Tare Memory
Toggle between Weight Units
With this application program you can weigh in components
for formulation of a mixture.
Preparation
Configure the Net-total formulation/Second tare memory
application in the operating menu: See “Configuring
the Scale”
Menu code 2.1. 3
Key (or instruction) Display
1. Turn on the scale
[ON/OFF]
2. Place an empty container
on the scale
3. Tare the scale
+
ct
t
+ 120,500 c t
4. Add the first component
5. Store the first component
weight
65.000
0.000
[FUNCTION]
If the print format is set
to include data ID codes,
the following is printed
N1
6. Add the next component
+
+
ctNET
120.500
70,500
0.000
ct
7. Store the 2nd component
weight
[FUNCTION]
ctNET
8. Add further components,
if desired
As described
for Steps 5 and 6
9. Display total weight
and fill to desired
final weight
[CAL/CF] > 2 sec. +191,000 c t
Configure the “Toggle weight units” application in the
operating menu:
See “Configuring the Scale” menu code 2.1. 2 Toggle
weight units
Menu
code
Example
Step
With this application program you can toggle the display
of a weight value back and forth between two weight units.
ct
Unit
Conversion factor
Abbr. on
printout
1. 7. 2
3. 1. 2o
Grams
1.00000000000
g
1. 7. 3
3. 1. 3
Kilograms
0.00100000000
kg
1. 7. 4o
3. 1. 4
Carats
5.00000000000
ct
1. 7. 5
1. 7. 6
3. 1. 5
3. 1. 6
Pounds
Ounces
0.00220462260
0.03527396200
lb
oz
1. 7. 7
3. 1. 7
Troy ounces
0.03215074700
ozt
1. 7. 8
1. 7. 9
3. 1. 8
3. 1. 9
Hong Kong taels
Singapore taels
0.02671725000
0.02645544638
tlh
tls
1. 7. 10
3. 1. 10
Taiwanese taels
0.02666666000
tlt
1. 7. 11
3. 1. 11
Grains
15.43235835000
GN
1. 7. 12
1. 7. 13
3. 1. 12
3. 1. 13
Pennyweights
Milligrams
1. 7. 14
3. 1. 14
Parts per pound
1.12876677120
/lb
1. 7. 15
3. 1. 15
Chinese taels
0.02645547175
tlc
1. 7. 16
1. 7. 17
3. 1. 16
3. 1. 17
Mommes
Austrian carats
0.26670000000
5.00000000000
mom
K
1. 7. 18
3. 1. 18
Tola
0.08573333810
tol
1. 7. 19
3. 1. 19
Baht
0.06578947437
bat
1. 7. 20
1. 7. 22
3. 1. 20
3. 1. 22
Mesghal
lb/oz
0.21700000000
0.03527396200
MS
o
0.64301493100
1000.00000000000
dwt
mg
o = Factory setting
Function
l To toggle the display between the 1st and 2nd weight
units: Press the [FUNCTION] key
6
Scale Operating Menu (Overview)
Configuring the Scale
o Factory setting
 User setting
Setting the Parameters (Menu Codes)
You can configure your CT scale to meet individual
requirements by selecting from the parameters available
in the menu.
u
Men
Menu
leve
l1
1. Scale
functions
Key (or instruction) Display
1. Turn off the scale
[ON/OFF]
2. Turn the scale back on
[ON/OFF]
while all segments
are displayed
t
briefly
t
repeatedly
2.
3. Select the 2nd menu level
[PRINT]
1. 1.
4. Select the 3rd menu level
[PRINT]
1. 1. 2 o
5. In Menu Level 3:
Select the desired option
t
repeatedly
1. 1. 4
6. Confirm new setting; the
“o” indicates the currently
set option
[PRINT] for 2 sec.
1. 1. 4 o
…
9.
1.
$ Select the next menu level
(here: move from the 3rd to
the 1st level)
[PRINT]
$ Set other menu codes,
if desired
[PRINT],
7. Store parameter settings
and exit operating menu
t
for 2 sec.
l2
1.3. Stability range
1.3.1
1/4 digit
1.3.2
1/2 digit
1.3.3
1 digit
1.3.4 o 2 digits
1.3.5
4 digits
1.6. Auto zero
1.6.1 o O n
1.6.2
Off
1.7. Weight unit 1
See “Toggle between
Weight Units”
2. Application
programs
2.1. Program
selection
see the desired application
program description
3. Application
3.1. Weight unit 2
see “Toggle between
Weight Units”
3.3. Reference qty
or %
see the desired application
program description
5. through 7.
applies only if an interface is installed; see the
corresponding instructions
8. Extra
functions
8.1. Menu
8.1.1 o Parameter settings
alterable
8.1.2
Parameter settings
read only
8.2. External
switch function
applies only if an interface
is installed; see the
corresponding instructions
8.3. Power-on
mode
8.3.1
9.– Factory
settings
9.– 1
Reset
9.– 2 o Do not reset
1.
t
or
9. Reset menu
$ Exit operating menu without
storing changes
[ON/OFF]
> Restart the application
0.000
3
4
ing
vel
vel
sett
u l e actory
u le
n
n
e
e
M
F
M
1.1.1
Minimum vibration
1.1.2 o Normal vibration
1.1.3
Strong vibration
1.1.4
Extreme vibration
1.
$ To navigate within a menu
level; the last menu
option is followed by the
first option
leve
1.1. Adapt filter
Example: Adapt the scale to unstable ambient conditions:
Menu code 1 .1 .4
Step
u
Men
Off/on (battery
shuts off
automatically after
3 min)
8.3.2 o Stand-by/on
ct
7
Error Codes
Error codes are shown in the main display for approx. 2 seconds, after which the program automatically returns to the
weighing mode.
Display
Cause
Solution
No segments appear on
the display
No AC power is available
The AC adapter is not
plugged in
Battery is dead
Check the AC power supply
Plug in the AC adapter
h
The load exceeds the
scale capacity
Unload the scale
l
The load plate is not in place
Place the load plate on the
scale
Move the object that is
touching the load place
Something is touching
the load plate
Replace the battery
Recharge the battery using
an external recharging device
e 01
Display capacity exceeded:
Value to be output cannot be
shown on the display
Decrease the weight on
the scale
e 02
Calibration parameter
not met; e.g.:
– scale not zeroed
– scale is loaded
Calibrate only when zero
is displayed
Press t to tare the
scale
Unload the scale
e 09
When gross - zero, no tare
Tare the scale
e 10
The t key is blocked
when there is data in
the second tare memory
(net-total) – only 1 tare function
can be used at a time
Press [CAL/CF] > 2 sec. to clear
the tare memory and release the
tare key
e 11
Value input is not allowed for
second tare memory
Press
e 22
Weight is too light or there is
no sample on the balance
Increase the reference quantity
e 30
Interface port for printer
output is blocked
Contact your local
Service Center
Max. weighing range is less
than indicated under
”Specifications”
The scale was
turned on without the weighing
pan in place
Place the weighing pan on
on the scale
and press [ON/OFF] to turn on the
scale
The weight readout
is obviously wrong
The scale has not
been calibrated/adjusted
The scale was not
tared before weighing
Calibrate/adjust the scale
t
Tare before weighing
If any other errors occur, contact your local Service Center!
8
Care and Maintenance
Repairs
Repair work must be performed by trained service
technicians. Any attempt by untrained persons
to perform repairs may lead to hazards for the user.
Cleaning
! Disconnect the scale from the AC adapter and unplug
any data cables that are connected to the scale
Instructions for Recycling
the Packaging
To ensure safe shipment, your scale has been packaged
using environmentally friendly materials. After successful
installation of the scale, you should return this packaging for
recycling.
For information on recycling options, including recycling
of old weighing equipment, contact your municipal waste
disposal center or local recycling depot.
! Make sure that no liquid enters the scale housing
! Do not use any aggressive cleaning agents (solvents or
similar agents)
l Clean the scale using a piece of cloth which has been
wet with a mild detergent (soap)
l After cleaning, wipe down the scale with a soft,
dry cloth
Removing and Cleaning
the Weighing Pan
l Lift up and remove the
weighing pan together with
the pan support by gripping
them from under the shield
ring. Make sure that you
do not damage the
weighing system in doing so.
Safety Inspection
If there is any indication that safe operation of the scale with
the AC adapter is no longer warranted:
l Turn off the power and disconnect the equipment from
AC power immediately
>
Lock the equipment in a secure place to ensure that it
cannot be used for the time being
Safe operation of the scale with the AC adapter is no longer
ensured when:
–
–
–
there is visible damage to the AC adapter
the AC adapter no longer functions properly
The AC adapter has been stored for a relatively long
period under unfavorable conditions
In this case, notify your nearest Service Center or the International Technical Support Unit. Maintenance and repair
work may only be performed by service technicians who are
authorized by Citizen and who
–
–
have access to the required maintenance manuals
have attended the relevant service training courses
9
Overview
Specifications
Model
Weighing capacity
CT103
101ct/36g
CT503
505ct/101g
Readability
Tare range (subtractive)
0.001ct/0.2mg
105ct/21g
0.001ct/0.2mg
505ct/101g
Repeatability
-+
0.001ct/0.2mg
0.001ct/0.2mg
Linearity
-+
0.002ct/0.4mg
0.002ct/0.4mg
Operating
temperature range
Allowable ambient
operating temperature
Sensitivity drift
within +10...+300C -+/K
Response Time
s
(average)
Adaptation to
ambient conditions
Display update
(depends on the
filter level selected) s
External calibration
weight (of at least g
accuracy class...)
Net weight, approx. kg/lb
Pan size
mm
inches
Weighing
mm
chamber height
inches
Dimensions
mm
(WxDxH)
inches
AC power source/
power requirements
Frequency
Power requirements,
direct current
V
Power consumption
(average)
W
+10...+300C
(500F-860F)
+5...+400C
2.10-6
2
By selection of 1 of 4 optimized
filter levels
0.2 - 0.4
20 (F1)
100 (F1)
2.8/6.2
80Ø
3.3Ø
133
5.2
200 x 270 x 233
7.9 x 10.5 x 9.2
AC adapter, 230 V or 115 V,
+15%....20%
48 - 60 Hz
10 to 20
1
1
Marking
The
marking affixed to the equipment indicates thatt the equipment meets the requirements of the following Directive(s):
Council Directive 89/336/EEC “Electromagnetic compatibility (EMC)”
Applicable European Standards:
Limitation of emissions:
EN 50081-1
EN 50081-2
Residential, commercial and light industry
Industrial environment
Defined immunity to interference: EN 50082-1
EN 50082-2
Residential, commercial and light industry
Industrial environment
Important Note: The operator shall be responsible for any modifications to Citizen equipment and for any connections of
cables or equipment not supplied by Citizen and must check and, if necessary, correct these modifications and connections.
On request, Citizen will provide information on the minimum operating specifications (in accordance with the standards listed
above for defined immunity to interference).
Council Directive 73/23/EEC
“Electrical equipment designed for use within certain voltage limits”
Applicable European Standards:
EN 60950
Safety of information technology equipment including electrical business equipment
EN 61010
Safety requirements for electrical equipment for measurement, control and laboratory use
Part 1: General requirements
If you use electrical equipment in installations and under ambient conditions requiring higher safety standards,
you must comply with the provisions as specified in the applicable regulations for installation in your country.
10
WORLDWIDE MARKETING :
CITIZEN SCALE INC.
75 West, 47th Street, Suite # 3B,
New York, NY -10036. l USA
Tel.: (212) 997-1010
Fa x : (212) 997-0110
E-mail: sales@citizeninc.com
www.citizeninc.com
BRANCHES :
UK :
CITIZEN SCALE CO. LTD.
10, Osborn Cosle,
Frimeley, Camberlley, Surrey.
P. O. Box GU169YD
Tel.: +44 - 1252 - 835644
E-mail: sanjay@citizenscales.com
INDIA :
CITIZEN SCALE (I) PVT. LTD.
Shop No. 3, Pushpanjali Bldg.,
Gaushala Lane, Malad (East), Mumbai - 400 097.
Tel. : 91 - 22 - 2883 4917 / 6726
Fax : 91 - 22 - 2883 5740
E-mail: citizenscale@vsnl.com
www.citizenscales.com
U. A. E. :
STANDARD SCALES LLC
P. O. Box 27137,
Deira, Dubai, U. A. E.
Tel.: 009714 - 2288430
Fax: 009714 - 2288426
E-mail: sscales@emirates.net.ae
www.standardweighing.com
CITIZEN SCALE INC. reserves the right to change the
specification without notice for the improvement of products.
11