VWR VWRI611-3279 User manual

MAN_VWR_HPB_EN_th_R_7.xx_Rev2 12/09/16
Top Loading Balances
European Catalogue Numbers:
VWRI611-3279 ANAL. BALANCE, LA414I 410G/0.1MG LCD
VWRI611-3281 ANAL. BALANCE, LA514i 510G/0.1MG LCD
VWRI611-3456 ANAL. BALANCE, LA614i 610G/0.1MG LCD
VWRI611-3448 ANAL. BALANCE, LA414I 410G/0.1MG LCD CERT
VWRI611-3450 ANAL. BALANCE, LA514i 510G/0.1MG LCD CERT
VWRI611-3547 SEMI-MICR BALANCE, SM425i 42G LCD
VWRI611-3548 SEMI-MICR BALANCE, SM625i 62G LCD
VWRI611-3533 SEMI-MICR BALANCE, SM1245Di 42-120G LCD
VWRI611-3534 SEMI-MICR BALANCE, SM1265Di 62-120G LCD
VWRI611-3535 SEMI-MICR BALANCE, SM2245Di 42-220G LCD
VWRI611-3536 SEMI-MICR BALANCE, SM2265Di 62-220G LCD
VWRI611-3537 SEMI-MICR BALANCE, SM2285Di 82-220G LCD
VWRI611-3549 SEMI-MICR BALANCE, SM425i 42G LCD CERT
VWRI611-3550 SEMI-MICR BALANCE, SM625i 62G LCD CERT
VWRI611-3538 SEMI-MICR BALANCE, SM1245Di 42-120G LCD CERT
VWRI611-3539 SEMI-MICR BALANCE, SM1265Di 62-120G LCD CERT
VWRI611-3540 SEMI-MICR BALANCE, SM2245Di 42-220G LCD CERT
VWRI611-3541 SEMI-MICR BALANCE, SM2265Di 62-220G LCD CERT
VWRI611-3542 SEMI-MICR BALANCE, SM2285Di 82-220G LCD CERT
User Manual
Version 1 Issued 26/11/15

1
Legal Address of Manufacturer
Europa
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
+ 32 16 385011
http://be.vwr.com
Country of origin
Italy
Intended use
The precision balances are used for precision scale in the laboratory,
industry, universities and wherever required weight measurement accurate and
repeatable.

2
INDEX
1.
POSITIONING THE INSTRUMENT................................................................................... 4
1.1 P REFACE ..................................................................................................................................... 4
1.2 P LACE RECOMMENDED TO INSTALL THE INSTRUMENT ............................................................... 4
2. RECOMMENDATIONS FOR A CORRECT USE OF THE INSTRUMENT................5
2.1 P REFACE ..................................................................................................................................... 5
2.2 F IRST POWER ON ......................................................................................................................... 5
2.3 U SING THE B ALANCE ................................................................................................................. 5
2.4 C ARE AND CLEANING OF THE BALANCE ..................................................................................... 6
3. UNPACKING / PACKING......................................................................................................7
4. BALANCE OVERVIEW.........................................................................................................9
4.1 F RONT B ALANCE VIEW .............................................................................................................. 9
4.2 R EAR B ALANCE VIEW ................................................................................................................ 9
5. KEYBOARD AND DISPLAY...............................................................................................10
6. OPERATING...........................................................................................................................11
6.1 C OMPONENTS LOCATION .........................................................................................................11
6.2 C ONNECTION BALANCE AND ELECTRONIC BOX .......................................................................11
6.3 C ONNECTION BETWEEN POWER SUPPLY AND ELECTRONICS BOX ............................................11
6.4 B ALANCE LEVELLING ..............................................................................................................12
7. SWITCH ON ...........................................................................................................................13
8. CALIBRATION.....................................................................................................................14
8.1 E XTERNAL CALIBRATION .........................................................................................................14
8.2 I NTERNAL CALIBRATION ..........................................................................................................16
8.2.1 Autocalibration (AUT-CAL)...........................................................................................16
8.2.2 Internal calibration (I-CAL)...........................................................................................17
8.2.3 External calibration (E-CAL).........................................................................................17
8.2.4 Technical calibration (TEC-CAL)..................................................................................17
9. TARE FUNCTION.................................................................................................................19
9.1 M ANUAL TARE FUNCTION ........................................................................................................20
10. WEIGHT UNITS (UNITS)................................................................................................21
11. PC COMMUNICATION SETTING (PC-PRTR)..........................................................22
12. PRINTER SERIAL COMMUNICATION SELECTION (PC-PRTR).......................23
13. TRANSMISSION SPEED SELECTION (BAUD RT)..................................................24
14. AUTOZERO FUNCTION (AUTO 0)..............................................................................25
15. FILTERS SELECTION (FILTER)..................................................................................27
16. STABILITY FUNCTION (STABIL)...............................................................................29
17. DISPLAY CONTRAST REGULATION (CONTR)......................................................30
18. DISPLAY BACKLIGHT SETUP (BLT).........................................................................31
19. AUTO POWER-OFF FUNCTION (TIME OFF) ..........................................................32

3
20. SELECTION OF WORKING MODE WITH TABLET (TBL MODE)..................33
21. PIECECOUNTING FUNCTION (COUNT)...................................................................35
21.1 V ISUALIZATION OF TOTAL AND UNIT WEIGHT OF PIECES .......................................................36
21.2 M ANUAL INSERTION OF THE UNIT AVERAGE WEIGHT ...........................................................37
21.3 A UTOMATIC UPDATE OF UNIT WEIGHT ..................................................................................38
22. DENSITY DETERMINATION OF A SOLID OR A LIQUID (DENS)......................39
22.1 D ENSITY DETERMINATION OF A SOLID ..................................................................................39
22.2 D ENSITY DETERMINATION OF A LIQUID .................................................................................41
23. MAXIMUM LOAD DETERMINATION FUNCTION (M LOAD)............................43
24. PERCENTAGE WEIGHING FUNCTION (PERC).....................................................44
24.1 M ODE WITH WEIGHT REFERENCE ..........................................................................................44
24.2 M ODE WITH MANUAL INSERTION OF THE REFERENCE WEIGHT .............................................45
25. ANIMAL WEIGHING FUNCTION (ANIM WEI).......................................................47
26. TOTALIZING (ADD)........................................................................................................48
27. THRESHOLD FUNCTION (HOL)..................................................................................50
27.1 B OTH THRESHOLDS SET .........................................................................................................51
27.2 L OWER THRESHOLD SET ONLY ..............................................................................................51
27.3 H IGHER THRESHOLD SET ONLY ..............................................................................................51
28. RS232 INTERFACE FEATURES....................................................................................52
29. ERROR CODES .................................................................................................................58
30. MAINTENANCE AND CARE.........................................................................................59
31. QUICK GUIDE TO BALANCE PARAMETERS SETUP...........................................60
32. QUICK GUIDE TO THE USE OF THE BALANCE PROGRAMS...........................61
33. TECHNICAL FEATURES SCALE.................................................................................62
34. OPTIONAL ACCESSORIES ...........................................................................................63
35. TECHNICAL SERVICE...................................................................................................63
36. WARRANTY.......................................................................................................................64
37. COMPLIANCE WITH LOCAL LAWS AND REGULATIONS................................64
38. STORAGE CONDITIONS................................................................................................64
39. EQUIPMENT DISPOSAL ................................................................................................65
WARNING:
Please read carefully following instructions for installation and use
before starting your work with a new balance. A use of the instrument
different from the one mentioned in this manual does not grant
product safety anymore.

4
1. Positioning the instrument
1.1 Preface
Balances with resolutions 0.1mg and 0.01mg are instruments of high sensitivity and
precision. To achieve reliable and accurate results it is fundamental to install the
instrument in a suitable environment to meet the requirements necessary to ensure its
proper functioning.
1.2 Place recommended to install the instrument
Choise of the correct placement of the instrument is fundamental to ensure optimal and
precise operations.
For optimum weighing it is necessary to respect the following criteria:
- TYPE OF ENVIRONMENT
Place the balance in a corner of the room to minimize vibrations.
Place the balance in a secluded location: not put it near doors to prevent air
drafts.
Avoid places with many persons: every person who is close generates a draft of
air.
Protect the balance from an air conditioner or ventilation fans and other electronic
devices with fans (eg. Computer or other laboratory instruments).
Keep the room temperature as constant as possible, at a value between 15 and
30 ° C. You must use a conditioner (but leave the speed of the fan to a minimum
to avoid eccesive air drafts).
Keep the humidity where balance is used as constant as possible, it should be
between 40% and 65% of moisture.
Place the balance away from heat sources, eg heaters, light bulbs (use tubular
lamps), windows (the warmth of the sun's rays can filter out the window and may
affect the weighing result).
- TYPE TABLE
The table must be stable: must not sag during lean of the instrument (eg.
Laboratory bench or marble / granite counter top).
Must be as anti-magnetic and anti-static as possible.
Must be reserved to the balance.
Place the balance as close as possible to the table legs because there are less
vibrations rathern than in the middle of the table.

5
2. Recommendations for a correct use of the instrument
2.1 Preface
To obtain accurate and repeatable weighing pay attention to the following.
2.2 First power on
THE FIRST TIME THAT YOU CONNECT THE BALANCE TO THE MAINS,
BEFORE USE, WAIT AT LEAST 12 HOURS TO ENSURE THE WARM-UP OF
THE INSTRUMENT.
For a correct use of the instrument never disconnect the balance from the mains.
If you want to turn it off, use the ON / OFF button to put it in Stand-by (in this way
it is not necessary to wait each time the warm up time).
2.3 Using the Balance
Level the balance. It is fundamental always to level properly the instrument:
regularly check that the air bubble is at the center of the level. Help with block-
feet to always ensure the correct leveling of the balance.
Load the sample to weigh always in the center of the plate to avoid possible
errors.
Open the glass doors of the cabinet as less as possible and use the tweezers to
load/unload the samples to be weighed.
Pay attention to possible Static charges that may be generated due to containers
with materials of low electrical conductivity or due to dry air with less than 40%
moisture. Electrostatic charges can alter the results of the weighings. It is
recommended to use the Ionizer Mod. 611-3446 to eliminate static charges
present on any substances to be weighed or that have accumulated on the
instrument.
- Because of static charges the results of weighings are always different, the
balance is not repeatable.
Pay attention to dynamic push: a big temperature difference between the
sample to be weighed and the weighing chamber creates air drafts along the
samplel. A colder object appears heavier while a warmer object lighter, this effect
is reduced when it is reached the thermal equilibrium between sample and
weighing chamber.
- With the dynamic push you will get results that move in one direction depending
on whether the material is colder or warmer.

6
Pay attention to substances that can Evaporate (alcohol) or Absorb humidity
(silicon gel). Because of these types of materials weight may vary constantly in
one direction.
Be careful to Magnetic materials: magnetic objects will attract each other, the
force that results are wrongly interpreted as a load.
- With magnetic materials the weighing results are hardly repeatable, the indication
remains stable but weighing result provides different results.
2.4 Care and cleaning of the balance
Before cleaning, remove all removable parts (eg. Plate, underplate).
To clean the weighing chamber, the plate, the glasses and the other parts please
use an antistatic liquid (do not use cloths that can leave fragments).

7
3. Unpacking / Packing
- After opening the box from upper side you can find accessories box containing: User
manua, Pan, Pan Support, Antiventilation ring, Power Supply, Power Supply Box.
Operate on a flat surface so that removal of protection foam is easier.
N.B. Keep all packing parts in case of balance return.
User
Manual
1
2
3
4

8
Always use original packing in case of balance return to assistance
centre to avoid damages to the instrument. Please note following
procedures.
- Before re-packing, remove all movable
objects and put them in the accessories
box.
- Following this sequence, re-pack the balance inside its own box:
User
Manual
1
2
3
4

9
4. Balance Overview
4.1 Front Balance view
1 Draft windshield
2Electronics box
3Function keys
4Antiventilation ring
5Display LCD
6Adjustable front foot
4.2 Rear Balance view
7Level bubble
8Connector 9 poles (pin) female for
interface RS232 for printer PC
9Rear fixed foot
10 Label with balance model and serial
number
11 Power socket
1
2
3
4
5
6
7
8
9
10
11

10
5. Keyboard and display
* Stability indicator
O Zero indicator
% Percentage weighing
PC Piece counting
Battery charge indicator
Insert data mode
H Upper threshold
L Lower threshold
DS Density measure mode
ct, Measure unit
ozt, lb, GN, dwt, Kg, mg
Standby (OFF/ON) or escape
ESC.
TARE or zero button..
Selection CONFIRM or SEND
data to printer.
Balance setup MENU button.
Balance CALIBRATION button.
ESC
ESC

11
6. Operating
6.1 Components location
- As a first step place Pan Support (1)
on balance cone
- Lay Weighing Pan ( 2 ) on pan
support and check the pan is placed
properly.
N.B. Scales with capacity 0,01mg on the
Pan Support and the Weighing Pan is
in one piece:
- Put Antiventilation ring ( 3 )
6.2 Connection balance and electronic box
- Insert plug connection cable into jack of
electronic box.
- Fix the connector screwing the two side
screws.
6.3 Connection between power supply and electronics box
- Connection to network is made through
an external power supply.
- Insert power supply connector in DC
plug placed on electronics box.
- Use ONLY power supply provided with
the balance.
1
2
3

12
6.4 Balance levelling
- Level the balance with level bubble, adjusting it ( 2) until the air Bubble is placed at the
centre of the indicator ( 1 ).
-Adjust the balance according to the level bubble:
Lift the balance rotate front feet clockwise
Lower the balance rotate feet anticlockwise
- Once level bubble is properly placed using adjusting feet ( 2 ), lock them screwing the disk
Foot-locking ( 3)
1
3
2
2
3

13
7. Switch on
After connecting the balance to power supply, an autodiagnosis of electronic circuits is
automatically effected, ending with stand by indication
Balance Warm-up: Wait 8 hours from switch on for warm up
It is suggested to never disconnect the balance from power socket and use ON/OFF
key to put the instrument in standby mode until end of work.
From “STAND BY” mode: to bring the balance back to working conditions, press ON/OFF
key.
It is recommended not to drop heavy objects on balance pan, to avoid damage of the
instrument.
Electronic balance effects mass measurings using gravity (g). Differences in geographical
areas e in altitude change gravity acceleration (g).
Therefore, to get precise measurings, balance has to be adjusted to environmental conditions.
This adjusment is accomplished through calibration function.
It is needed to calibrate the balance every time it is moved to another place.

14
8. Calibration
8.1 External calibration
Calibration is accomplished by pressing CAL button.
1. Press CAL button when pan is empty, dashes are displayed on the display.
2. When calibration weight value starts to flash, load the weight on the pan.
3. The display will stop flashing, indicating calibration weight value.
Once the calibration is effected will be shown the value of the calibrated weight and the
current unit of measure.
4. Unload calibration weight from the pan.
The balance is ready for weighing operations.
NOTE: if there is interference during calibration process, an error message will be displayed.

15
Moreover, it is possible to calibrate the balance with a calibration weight higher than the one
set by default:
1. Press and keep CAL button pressed with empty pan until the acoustic alarm stops, then
release the button. On display it will be visualized the string "-CAL-", followed by
flashing string "LOAD".
1. Load on the pan a weight equal higher or lower than default calibration weight; the
balance will recognize it as valid weight if equal or higher than calibration weight as
long as it is a whole number in comparison with the most meaningful digit of
calibration weight .
e.g.: if calibration weight is 200g, it will be possible to calibrate the balance with
values from 100g 200g, 300g, 400g up to the highest limit of balance weighing
range.
The message “LOAD” on display will stop flashing. Once calibration has been
effected, the value of calibrated weight will be displayed.
2. Unload calibration weight. The balance is ready for weighing operations.
NOTE: if there is interference during calibration process, an error message will be displayed.
Periodically check the calibration of the scale.
2 Sec

16
8.2 Internal calibration
In these balance models there are 4 calibration modes:
From display zero condition, press and keep pressed the MENU button until the acoustic
alarm gets mute, then release the button. The message “unitS” will be visualized on
display, press then MENU button until you visualize “Calib” on display. Press PRINT to
confirm.
1. Select the calibration mode you wish by pressing MENU button in sequence:
AUT-CAL: auto calibration
I-CAL: internal calibration *
E-CAL: external calibration *
TEC-CAL: technical calibration *
2. Press PRINT button to confirm “AUT-CAL”, “I-CAL”, “E-CAL”.
To confirm “TEC-CAL” keep pressed the PRINT button until the acoustic alarm gets
mute.
3. After selection, the balance returns to calibration menu. Press and keep pressed MENU
button until the acoustic alarm gets mute, then release the button. Balance is again
ready for weighing operations.
8.2.1 Autocalibration (AUT-CAL)
The balance self-calibrates when the temperature variation exceeds the factory preset value
and at factory preset time intervals, through the internal reference mass, and only if the
balance pan is empty.
When the balance needs to perform the Automatic calibration, the display will show the
following message:
A 25-seconds countdown will start during which you can decide if:
•Stop the automatic-calibration procedure by pressing the “ON/OFF button that
will be delayed of 5 minutes
or •Let the countdown finish so that the automatic calibration starts
Note: during the countdown do NOT load nothing on the plate!

17
In this mode, it is also possible to carry out the calibration with the internal reference mass
by pressing the CAL button at any moment, first ensuring that no weight is loaded on the
plate.
1. Press CAL button with empty pan.
The message “CAL” will be displayed and balance calibration will be effected
automatically.
2. At the end of calibration, balance returns to normal weighing conditions.
3.
If calibration is not finished due to vibrations or air flows, then the message “CAL bUt” is
displayed. Press again CAL button. If the problem repeats then select external calibration
and contact the product supplier.
8.2.2 Internal calibration (I-CAL)
The balance calibrates itself with internal reference mass ONLY on user command by
pressing CAL button.
Before effecting internal calibration, be sure that there’s no weight loaded on the balance
pan.
8.2.3 External calibration (E-CAL)
The balance is calibrated through an external reference mass (NOT provided with models
with internal calibration).
8.2.4 Technical calibration (TEC-CAL)
This function allows storing the value of internal reference mass whenever checking or
assistance actions require it.

18
1. After having selected the TEC-CAL calibration mode, press CAL button at empty pan. It
will be displayed “CAL”.
2. When the value of
calibration weight start flashing on display, load the weight on to the balance pan.
3. Wait the acoustic alarm and that the displayed calibrated weight value stops flashing,
then unload the weight from balance pan.
4. When string “0.000” is displayed continuously, then press and keep pressed the PRINT
button. This starts the internal weight value automatic acquisition and store. During the
acquisition cycle, the display will show “TEC-MEM”.
5. After having stored the value of internal calibration weight, balance returns to normal
weighing conditions.
6. Return to calibration menu as described at paragraph 6.2 and set the desired
calibration mode: internal, automatic or external..
ATTENTION : this procedure must be effected only using E1-class reference
masses.

19
9. Tare function
1. Load the container on the pan. The display will show the weight.
2. Press O/T button. “O-t” string will be displayed
3. After reaching stability, the value “0.000” will be displayed. If the stability is not reached
(due to air flows or vibrations or other disturbs) the dashes will remain displayed.
4. Load the objects to weigh in the container. Read net weight value on display.