Citizen CX 265N User manual

Instruction number
LMI-17-02/05/09/ENG-C
Analytical balances
CX series

- 2 -
MAY 2009

- 3 -
Contents
1.TECHNICAL PARAMETERS .........................................................................................5
2.UNWRAPING THE BALANCE.......................................................................................5
2.1.The balance CX...................................................................................................5
3.START THE BALANCE UP ...........................................................................................7
3.1.Conditions of proper usage .................................................................................7
3.2.Set level up..........................................................................................................8
3.3.Warmin up ...........................................................................................................8
4.APPROPRATION...........................................................................................................8
5.DESCRIPTION OF THE BALANCE...............................................................................9
5.1.GRAPHIC DISPLAY ............................................................................................9
5.2.Keyboard ...........................................................................................................10
5.3.Connections.......................................................................................................11
6.USER MENU ................................................................................................................11
6.1 Move in user menu ..................................................................................................14
6.2.User menu.........................................................................................................17
7.WEIGHING ...................................................................................................................18
7.1.Pipettes calibration ............................................................................................19
7.2.Log-in function...................................................................................................20
8.BALANCE CALIBRATION...........................................................................................22
8.1.Automatic balance calibration............................................................................23
8.2.Calibration test...................................................................................................25
8.3.Manual calibration .............................................................................................25
8.4.Calibration report printout ..................................................................................27
9.SETTING PRINTOUTS FOR GLP PROCEDURES .....................................................28
10.SETTING TIME AND DATE .........................................................................................28
11.SETTING THE PARAMETERS ....................................................................................31
11.1.Setting filter........................................................................................................32
11.2.Value release.....................................................................................................32
11.3.Set the display refreshing time ..........................................................................32
11.4.Set autozero working.........................................................................................32
11.5.Last digit ............................................................................................................32
11.6.Negative ............................................................................................................33
12.FUNCTIONS IN USING RS 232 PORT ........................................................................33
13.PRINTOUTS .................................................................................................................33
14.ACCESS TO MASS UNITS..........................................................................................34
15.SETTING ACCESSIBILITY OF THE WORK MODES .................................................34
16.OTHER PARAMETERS ...............................................................................................35
17.USING WORK MODES................................................................................................37
17.1.Counting pieces of the same mass....................................................................37
17.2.Checkweighing ..................................................................................................41
17.3.Dosage ..............................................................................................................44

- 4 -
17.4.Percents ............................................................................................................46
17.5.Weighing animals ..............................................................................................49
17.6.Density of solids and liquids ..............................................................................50
17.7.Formulation........................................................................................................51
17.8.Statistics ............................................................................................................56
17.9.Calibration of pipettes........................................................................................57
18.KINDS OF PRINTOUTS...............................................................................................60
18.1.Standard printout ...............................................................................................60
18.2.Non-standard printout........................................................................................62
19.COOPERATION WITH PRINTER OR COMPUTER ....................................................67
19.1.Connections.......................................................................................................68
20.COOPERATION WITH LABEL PRINTERS CITIZEN CLP-521...................................69
21.COOPERATION WITH PRINTER EPSON...................................................................74
22.WEIGHING LOADS UNDER THE BALANCE .............................................................75
23.CONNECTING ADDITIONAL KEYS............................................................................76
24.LIST OF COMMUNICATIONS COMPUTER-BALANCE .............................................76
25.COMMANDS ABOUT ERRORS ..................................................................................79

- 5 -
1. TECHNICAL PARAMETERS
CX 165 CX 205 CX 265 CX 265N
Max capacity 100/160 g 200 g 60/220 g 80/220 g
Min capacity 1 mg 1 mg 1 mg 1 mg
Readability 0,01/0,1 mg 0,01 mg 0,01/0,1 mg 0,01/0,1 mg
Tare range -160 g -200g -220 g -220 g
Repeatabilty 0,025/0,1 mg 0,03 mg 0,02/0,1 mg 0,025/0,1 mg
Linearity ±0,05/0,2mg ± 0,1 mg ±0,05/0,2mg ±0,05/0,2mg
Pan size Φ85 mm
Sensibility 2 ppm/°C in temperature +18 ° ÷ +30 °C
Temperature +10 ° ÷ +50 °C
Power supply adaptor 230V 50Hz AC / 11V AC
Calibration internal (automatic)
Display graphic (with backlight)
Max ambient
humidity 80 % *
Min ambient
humidity 35 % *
*- when any problems with electrostatics occurs humidity of air should be increased to 50%, but when it is not possible to
keep 50% humidity the ionizer should be used to eliminate electrostatic effects on balance indications.
Dimensions:
2. UNWRAPING THE BALANCE
2.1. The balance CX
Cut safety tape off. Take balance off the box. Take all necessary to correct
performance of balance elements off the box. After replace balance in place of use put

- 6 -
scale and rest of elements on. The balance is supplied with 230 V AC / 11V AC
supplier.
The balance with Φ85 mm pan:
-open side doors of weighing chamber,
-inside the chamber place lower shield of
weighing chamber(4),
-put centering ring on the shield (3),
-put the balance pan inside the ring (2),
-put the anti-breeze shield on the
centering ring (1),
−close side doors of weighing
chamber,
−turn on balance supply,
−pin of power adaptor should be
connected to socket in the back
of balance casing.
The balance with Φ100 mm pan:
-open side doors of weighing chamber,
-inside the chamber place lower shield of
weighing chamber (3),
-inside the chamber place anti-breeze
shield (2),
-put the balance pan inside the ring (1),
−close side doors of weighing
chamber,
−turn on balance supply,
−pin of power adaptor should be
connected to socket in the back
of balance casing.

- 7 -
The balance with pipettes calibration set:
-slide chamber side doors off (8)
-inside the chamber put bottom ring
(8),
-put glass ring on bottom ring (7),
-replace pan inside glass ring (6),
-put upper ring on glass ring (5),
-put steam protection container on
upper ring (4),
-put container to pipettes calibration
inside the container (3),
-put glass pad on upper ring (2),
-put glass lid on glass pad (1).
Draw. 1.The components installation for the CX balances
3. START THE BALANCE UP
3.1. Conditions of proper usage
−Set the balance on stable table, far from vibrations
−The balance should be replaced far from draughts and air breeze.
−The balance should be in stable temperature and humidity room
−The balance should be replaced far from sources of
−Temperature in the room +18°C ÷+30°C ( AS /X)
−If the static electricity has influence on the balance indications it base should be
earthed. Earthing screw is in the rear part of the balance base.
−The balance should be replaced in leveled position
−Before pipettes calibration and after assembling the set start the balance with
empty pan on (without container). When zeros come up on the display put
the container on the pan and after stabilization press ESC/ZERO TARA.

- 8 -
3.2. Set level up
After replacing the balance in the place of usage the balance should be leveled. The
correct leveling is shown on the level indication installed at the rear of the balance. The air
bubble should be in the centre position of the indication.
3.3. Warmin up
Before measurements user should wait untill the balance reaches temperature
stabilization. It is warming up time.
For analytical balances warming-up time is about 1 hour. This periods refers to the
balances which ware in surrounding temperature (work) before start weighing.
If the analytical balances are kept in lower temperature(for example in winter time) before
weighing the warming-up time is about 8 hours and for precision balances it is about 2
hours.
During warm-up stabilization the indications can change.
4. APPROPRATION
The balances with graphic display are used to do precise measurements in laboratories. It
is possible to do the zero function in all measure range.
The balance weights in following units:
Draw. 2. Measure units
Apart from weighing in various units the balances have additional functions as:
−counts pieces
−weights
−dosages
−determines deviations of the standard mass

- 9 -
−weights animals
−detemines liquids and solids density
−making mixtures up to recipes
−statistics of measurements series
−recipes
Measure units and particular functions can be inaccessible for user. It is possible to
adapt the balance to individual needs and access functions and units which are necessary
at this moment.
It is possible to define accessible or no-accessible in user menu and it is described in
further part of the manual.
5. DESCRIPTION OF THE BALANCE
5.1. GRAPHIC DISPLAY
Draw. 3. Display
1. load mass and quantity of pieces
2. measure unit
3. the result is stable
4. line of max range of the balance
5. work mode
6. date
7. time
8. precise ZERO

- 10 -
5.2. Keyboard
Each key is dual-function key. Particular function can be done through. User also can
move in the balance menu.
ON/OFF key, switches the display off, after switching off other
subcomponents are supplied and the balance is in stand by
mode.
Function key F,fast enter into work mode
Key MODE – selects the work mode
UNITS key, changes measure units
PRINT/ENTER key – sends information to external instrument
(PRINT) or confirms parameter value or function (ENTER).
Key ESC/ZEROTARA – sets indication to zero
Calibration
Menu of balances
Navigation bar

- 11 -
5.3. Connections
1. power adapter socket
2. PS keyboard connector
3. RS 232 port
4. additional display socket
Draw. 4. Sockets of the CX balances
6. USER MENU
There are 9 groups in user menu. Each group is named by P letter. Name and contents of
each group is presented below.
P1 Calibration
01 Int. calibr |
* * * * * * * * | function
02 Ext. calibr |
* * * * * * * * | function
03 User calibr |
* * * * * * * * | function
04 Calibr test | * * * * * * * * | function
05 Weight corr. | * * * * * *0.0 |
06 Auto calibr | * * * * * *0.3 | both
07 Auto cal time | * * * * * *0.3 | 3 hours
08 Print report | * * * * * *0.1 | on
P2 GLP
01 User | Nowak Jan |
02 Project | AR – 65/04 |
03 Time print | * * * * * *0.0 | off
04 Date print | * * * * * *0.0 | off
05 User print | * * * * * *0.0 | off
06 Project print | * * * * * *0.0 | off
07 Id print | * * * * * *0.0 | off
08 Last cal print | * * * * * *0.0 | off
P3 Date/Time
01 Date format | * * * * * * * 0 | DA/MO/YR
02 Time format | * * * * * * * 0 | 24 h.
03 Time |
* * * * * * * * | function
04Date |
* * * * * * * * | function
05 Display time | * * * * * * * 1 | yes
06 Display date | * * * * * * * 1 | yes

- 12 -
P4 Readout
01 Filter | * * * * * * * 3 | normal
02 Value relase | * * * * * * * 1 | fast + rel
03 Disp. Refresh | * * * * * * * 1 | 0.08s
04 Autozero | * * * * * * * 1 | on
05 Last digit | * * * * * * * 1 | always
06 Negative | * * * * * * * 1 | disabled
P5 RS - 232
01 Baud rate | * * * * * * * 1 | 4800
02 Parity | * * * * * * * 0 | none
03 Data bits | * * * * * * * 2 | 8 bits
04 Stop bits | * * * * * * * 1 | 1 bit
05 Handsake | * * * * * * * 0 | none
06 Auto print | * * * * * * * 0 | none
07 Interval | * * * * * * * 1 | * 0.1 s
08 Min. mass | * * * * * * * 4 | 10 d
09 Print on stab | * * * * * * * 1 | enabled
10 Printer type | * * * * * * * 0 | Epson /Standard
11 Cut paper |* * * * * * * 0 | no
P6 Printout
01 Printout no. | * * * * * * * 0 | standard
02 Printout. 1 start | * * * * * * * 1 |
03 Printout. 1 stop | * * * * * * * 1 |
04 Printout. 2 start | * * * * * * * 1 |
05 Printout. 2 stop | * * * * * * * 1 |
... . . . . . . . . . . | * * * * * * * 0 |
10 Pr. edit. |
* * * * * * * * | function
11 Text 1 | * * * * * * * 1 |
11 Text 2 | * * * * * * * 4 |
... . . . . . . . . . . | * * * * * * * 1 |
89 Text 80 | * * * * * * * 0 |
P7 Units
01 Grams | * * * * * * * 1 | enabled
02 Miligrams | * * * * * * * 1 | enabled
03 Carats | * * * * * * * 1 | enabled
04 Pounds | * * * * * * * 1 | enabled
05 Ounces | * * * * * * * 1 | enabled
06 Ounces troy | * * * * * * * 1 | enabled
07Dwt |* * * * * * * 1 | enabled
08 Taele Hk. | * * * * * * * 1 | enabled
09 Taele S. | * * * * * * * 1 | enabled
10 Taele T. | * * * * * * * 1 | enabled
11 Momms | * * * * * * * 1 | enabled
12 Grains | * * * * * * * 1 | enabled
13 Newtons | * * * * * * * 1 | enabled
14 Ticaal | * * * * * * * 1 | enabled
15 Custom | * * * * * * * 1 | enabled

- 13 -
P8 Work modes
01 Parts count | * * * * * * * 1 | enabled
02 Checkweighing | * * * * * * * 1 | enabled
03 Dosages | * * * * * * * 1 | enabled
04 Deviations | * * * * * * * 1 | enabled
05 Animals | * * * * * * * 1 | enabled
06 Density | * * * * * * * 1 | enabled
07 Recipes | * * * * * * * 1 | enabled
08 Statistics | * * * * * * * 1 | enabled
P9 Others
01 Setting ID |
* * * * * * * * | function
02 Autoprint ID | * * * * * * * 0 | disabled
03 beep | * * * * * * * 1 | enabled
04 Language | * * * * * * * 1 | Polish
05 Backlight | * * * * * * * 1 | enabled
06 Contrst |
* * * * * * * * | function
07 Screensaver | * * * * * * * 0 | disabled
08 Temperature |
* * * * * * * * | function
09 Balance number | 114493 * * * |
10 Software number | MBa.a 35 * |
11 Par. printout |
* * * * * * * * | function
12 Par. receive |
* * * * * * * * | function
13 Password protection |
* * * * * * * * | function
Parameters in user menu are:
•functional – for particular activity eg. the balance calibration
•selectable – selects one of few values from the balance memory
•noted – changes sets in the balance memory eg. Date, time, user number, texts
•
Menu –graphic version
Press the SETUP key to display main menu of the balance (display I). Select the submenu
whose contents is displayed after pressing the RIGHT ARROW key (display II).

- 14 -
Draw. 5. Menu
1 - main menu number
2 – indication of the function selection
3 – function name
4 – currently used function
5 – submenu number
6 – submenu name
7 – attribute of the menu
8 – value of the attribute
6.1 Move in user menu
User moves in the menu by
-the balance keyboard
-PS keyboard,
-Communicates from computer to the balance

- 15 -
6.1.1. The balance keyboard
enter main menu
move down in the menu
move up in the menu
selects submenu which is activated, submenu contents is presented on the
display
move one level up to main menu
Resignation parameter changing
6.1.2. Return to weighing function
Introduced changes are recorded after return to weighing mode and confirm
changes. Press the ESC key many times. If following question appears on
the display press: ENTER – confirm or ESC – cancel
Draw. 6. Return to weighing

- 16 -
6.1.3. PS computer keyboard
Each key on the balance keyboard has its equvivalent on the PS keyboard
- for functions
Description keyboard
Switch on/off the balance display
Move to the balance menu
Selects work mode
Selects measure unit
PRINT
TARE
- for Direktion keys
Move up
Move to level up
Sets selected parameter
Move down

- 17 -
- for ENTER / PRINT keys and ESC
Confirm changes
Cancel and leave function without changes
6.1.4. By means of virtual keyboard through RS 232
Most of the functions are done by the balance desk or PS keyboard. They are aslo done by
sending orders computer – balance.
This commands enables to move in the balance manu and control the balance work. The
list of the commands is at the end of the manual.
6.2. User menu
The menu is presented in p.5. Press the Setup key in weighing level. Main menu is
presented on the display. Select the submenu which is modificated .
Draw. 7. Main menu – submenu selection
If the menu is modificated press the RIGHT ARROW key. Selected menu appears on the
display. Select what will be changed in this submenu (activate). Select through keys
presented on the Draw above. Press the RIGHT ARROW key.

- 18 -
Reaction of the balance:
-Activity of the balance (eg. the balance calibration) is done for submenu described
as Function
-Attribute activation for submenu which is indicated (digit flashing means the value
can be changed and some signs can be written)
Draw. 8. The balance submenu
7. WEIGHING
Following conditions must be fulfilled to get reliable results:
-Stable temperature
-Stable ground
-Proper parameters for external conditions
Before measurements or for essential changes of the external conditions (if the
temperature changes more than 1°C/h) calibrate the balance in accordance with p.
7.1.
Before measurements load the pan and check if the balance show „precise zero” –
displayed in down left corner of the display (only if the parameter P4 06
Autozero has the value 1: yes) and check if the measurement is stable – is
displayed in right up corner of the display. If the balance does not show zero press
the key
If the conditions are unfavourable (no stable result) lines appear on the display.
After settled time the balance returns to weighing mode without set up to zero. In
this case wait untill the conditions stabilize and press Esc again
By the Units key select measure unit. Put the load on the pan and after stabilization
read out the result. If measure unit user wants to use is not displayed during
pressing the Units key check if it has access attribute.

- 19 -
The indication can be set to zero many times. Sum of loads noted in the balance
memory cannot be higher than max capacity.
Betwenn following measurements do not unpluged the balance.
The balance should be switched off by the ON/OFF key. After pressing the key
again the balance is ready to work without warm stabilization.
7.1. Pipettes calibration
In special function or via cooperation with special computer software PIPETTES user
can calibrate pipettes (pipettes calibration stand). Function is described in further part of
manual.
Independently on pipettes calibration for this function steam protection ring must be
installed on (see point Unpacking balance). Container of steam curtain minimizes errors of
measurement when liquid evaporates during weighing.
Before pipettes calibration pour water to steam protection ring to 2/3 height of ring.
The set is ready to use after about an hour –this time is necessary to get moisture
stability. Remember to control distilling water level in container – surface of container

- 20 -
should be covered with water all the time. Overflow of water in container can be removed
with automatic pump or pipette.
To minimize all humidity measurements inside chamber and influence of blast air
during opening side doors the dosing liquid from pipettes must be done through a hole in
upper cover of weighing chamber.
7.2. Log-in function
The operator has own access code to internal menu. The password system is defined by
administrator. Password can contain max 6 digits.
The balance program enables to declare:
•One administrator who is authorised to use all sets and programme functions,
change the passwords – own and user
•One user who is authorised to sets and the balance functions determined by
administrator
Setting password and access authorization
•After set the password and access parameters (parameter P9 13 Password
protection) write the password for administrator
•If the admistrator password is different from “0” the program wants administrator
password during enter for the parameter
P9 13 Password protection.
•Every enter this parameter the software demands administrator password, after
writting correct password it is possible to set the parameter P9 13 Password
protection
•If the password is not correct the command about wrong password is show and
the balance displays previous window
•Dependly on setting the password is shown as digits or stars (start value each
digit = 0)
According to point 6.1.1 of the manual enter the menu P9 Others