Citizen CT103, CT503 User Manual

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

Preparation

Available Features

l Configure the Weighing in percent application

in the operating menu:
See “Configuring the Scale”
Menu code 2. 1. 5 Weighing in percent

l Reference percentage:

Menu code 3. 3. 1 5 %
Menu code 3. 3. 2 10 %
Menu code 3. 3. 3 20 %
Menu code 3. 3. 4 50 %
Menu code 3. 3. 5 100 %

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 Key (or instruction) Display

1. Turn on the scale [ON/OFF]

2. Tare the scale t 0.000 ct

3. Display the reference [FUNCTION] ref100

percentage > 2 sec.

4. Place the reference + 222.500 ct

weight for

100% on the scale

(here: 222.5 ct)

5. Start application; [FUNCTION] + 100.00 %

if the print format is set

to include data ID codes, Wxx% + 222.500 ct

the following is printed

6. Place an unknown + 144.94 %

weight on the scale

(here: 322.5 ct)

7. Display weight [FUNCTION] + 322.500 ct

8. Display percentage [FUNCTION] + 144.94 %

9. Unload the scale 0.00 %

10. Delete the reference [CAL/CF] > 2 sec.

percentage

11. Repeat the procedure

starting from Step 6,

if desired.

Averaging

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.”

– 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

– 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
Factory Settings
Number of subweighs for averaging: 10 (3. 3. 2)
Preparation

l Configure the Averaging application

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”
Example
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 0.000 ct

3. Display the number [FUNCTION] ref 10 (briefly)

of subweighs (here: 10) > 2 sec.

4. Place sample on the scale + 8888

(weight readout fluctuates;
here: around 275 ct)

5. Start measurement [FUNCTION] + 8888

10

9
8

...

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 g

6. Unload the scale +275.500 ct

(stable display)

G

G

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

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

Example

Step Key (or instruction) Display

1. Turn on the scale [ON/OFF]

2. Place an empty container + 65.000 ct

on the scale

3. Tare the scale t

4. Add the first component + 120,500 ct

5. Store the first component [FUNCTION] 0.000 ct

weight
If the print format is set

to include data ID codes,
the following is printed N1 + 120.500 ct

6. Add the next component + 70,500 ct

NET

Toggle between Weight Units

With this application program you can toggle the display
of a weight value back and forth between two weight units.

Configure the “Toggle weight units” application in the
operating menu:
See “Configuring the Scale” menu code 2.1. 2 Toggle
weight units

Menu Unit Conversion factor Abbr. on
code printout

1. 7. 2 3. 1. 2 o Grams 1.00000000000 g

1. 7. 3 3. 1. 3 Kilograms 0.00100000000 kg

1. 7. 4 o 3. 1. 4 Carats 5.00000000000 ct

1. 7. 5 3. 1. 5 Pounds 0.00220462260 lb

1. 7. 6 3. 1. 6 Ounces 0.03527396200 oz

1. 7. 7 3. 1. 7 Troy ounces 0.03215074700 ozt

1. 7. 8 3. 1. 8 Hong Kong taels 0.02671725000 tlh

1. 7. 9 3. 1. 9 Singapore taels 0.02645544638 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 3. 1. 12 Pennyweights 0.64301493100 dwt

1. 7. 13 3. 1. 13 Milligrams 1000.00000000000 mg

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 3. 1. 16 Mommes 0.26670000000 mom

1. 7. 17 3. 1. 17 Austrian carats 5.00000000000 K

1. 7. 18 3. 1. 18 Tola 0.08573333810 tol

1. 7. 19 3. 1. 19 Baht 0.06578947437 bat

1. 7. 20 3. 1. 20 Mesghal 0.21700000000 MS

1. 7. 22 3. 1. 22 lb/oz 0.03527396200 o

o = Factory setting

Function

7. Store the 2nd component [FUNCTION] 0.000 ct

weight

8. Add further components, As described
if desired for Steps 5 and 6

9. Display total weight [CAL/CF] > 2 sec. +191,000 ct
and fill to desired
final weight

NET

l To toggle the display between the 1st and 2nd weight

units: Press the [FUNCTION] key

6

Configuring the Scale

Setting the Parameters (Menu Codes)

Scale Operating Menu (Overview)

o Factory setting
 User setting

You can configure your CT scale to meet individual
requirements by selecting from the parameters available
in the menu.

Example: Adapt the scale to unstable ambient conditions:
Menu code 1 .1 .4

Step Key (or instruction) Display

1. Turn off the scale [ON/OFF]

2. Turn the scale back on [ON/OFF]
while all segments t briefly

are displayed 1.

$ To navigate within a menu t 2.

level; the last menu repeatedly …
option is followed by the 9.
first option 1.

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: t 1. 1. 4
Select the desired option repeatedly

6. Confirm new setting; the
“o” indicates the currently
set option [PRINT] for 2 sec. 1. 1. 4 o

$ Select the next menu level

(here: move from the 3rd to
the 1st level) [PRINT] 1.

$ Set other menu codes, [PRINT], t

if desired

7. Store parameter settings t
and exit operating menu for 2 sec.

or

$ Exit operating menu without

storing changes [ON/OFF]

> Restart the application 0.000 ct

Menu level 1

Menu 1. Scale 1.1. Adapt filter 1.1.1 Minimum vibration

functions 1.1.2 o Normal vibration

2. Application 2.1. Program see the desired application
programs selection program description

3. Application 3.1. Weight unit 2 see “Toggle between

5. through 7. applies only if an interface is installed; see the

8. Extra 8.1. Menu 8.1.1 o Parameter settings
functions alterable

9. Reset menu 9.– Factory 9.– 1 Reset

Menu level 2

1.3. Stability range 1.3.1 1/4 digit

1.6. Auto zero 1.6.1 o On

1.7. Weight unit 1 See “Toggle between

3.3. Reference qty see the desired application
or % program description

corresponding instructions

8.2. External applies only if an interface
switch function is installed; see the

8.3. Power-on 8.3.1 Off/on (battery
mode shuts off

settings 9.– 2 o Do not reset

Menu level 3

Factory setting

Menu level 4

1.1.3 Strong vibration

1.1.4 Extreme vibration

1.3.2 1/2 digit

1.3.3 1 digit

1.3.4 o 2 digits

1.3.5 4 digits

1.6.2 Off

Weight Units”

Weight Units”

8.1.2 Parameter settings
read only

corresponding instructions

automatically after
3 min)

8.3.2 o Stand-by/on

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 No AC power is available Check the AC power supply
the display The AC adapter is not Plug in the AC adapter

plugged in
Battery is dead Replace the battery

Recharge the battery using
an external recharging device

h The load exceeds the Unload the scale

l The load plate is not in place Place the load plate on the

e 01 Display capacity exceeded: Decrease the weight on

e 02 Calibration parameter Calibrate only when zero

e 09 When gross - zero, no tare Tare the scale

e 10 The t key is blocked Press [CAL/CF] > 2 sec. to clear

scale capacity

scale
Something is touching Move the object that is
the load plate touching the load place

Value to be output cannot be the scale
shown on the display

not met; e.g.: is displayed
– scale not zeroed Press t to tare the

scale
– scale is loaded Unload the scale

when there is data in the tare memory and release the
the second tare memory tare key
(net-total) – only 1 tare function
can be used at a time

e 11 Value input is not allowed for Press t

e 22 Weight is too light or there is Increase the reference quantity

e 30 Interface port for printer Contact your local

Max. weighing range is less The scale was Place the weighing pan on
than indicated under turned on without the weighing on the scale
”Specifications” pan in place and press [ON/OFF] to turn on the

The weight readout The scale has not Calibrate/adjust the scale
is obviously wrong been calibrated/adjusted

If any other errors occur, contact your local Service Center!

second tare memory

no sample on the balance

output is blocked Service Center

scale

The scale was not Tare before weighing
tared before weighing

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.

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.
Cleaning
! Disconnect the scale from the AC adapter and unplug

any data cables that are connected to the scale

! 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

For information on recycling options, including recycling

of old weighing equipment, contact your municipal waste

disposal center or local recycling depot.

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 CT103 CT503

Weighing capacity 101ct/36g 505ct/101g
Readability 0.001ct/0.2mg 0.001ct/0.2mg

Tare range (subtractive) 105ct/21g 505ct/101g
Repeatability -+ 0.001ct/0.2mg 0.001ct/0.2mg

Linearity -+ 0.002ct/0.4mg 0.002ct/0.4mg
Operating +10...+300C

temperature range (500F-860F)
Allowable ambient

operating temperature +5...+400C
Sensitivity drift

within +10...+300C -+/K 2.10
Response Time s 2

(average)
Adaptation to By selection of 1 of 4 optimized
ambient conditions filter levels

Display update
(depends on the
filter level selected) s 0.2 - 0.4

External calibration
weight (of at least g 20 (F1) 100 (F1)
accuracy class...)
Net weight, approx. kg/lb 2.8/6.2
Pan size mm 80Ø
inches 3.3Ø

Weighing mm 133
chamber height inches 5.2
Dimensions mm 200 x 270 x 233
(WxDxH) inches 7.9 x 10.5 x 9.2

AC power source/ AC adapter, 230 V or 115 V,

power requirements +15%....20%

Frequency 48 - 60 Hz
Power requirements,
direct current V 10 to 20

Power consumption
(average) W 1 1

-6

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 Residential, commercial and light industry

EN 50081-2 Industrial environment

Defined immunity to interference: EN 50082-1 Residential, commercial and light industry

EN 50082-2 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.: [phone]
Fa x: [phone]
E-mail: [e-mail]
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: [e-mail]

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: [e-mail]
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: [e-mail]
www.standardweighing.com

CITIZEN SCALE INC. reserves the right to change the
specification without notice for the improvement of products.

11