Accurist W3300 Series User manual

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Compact Balances
W3300 Series
Operating Manual

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Table of Contents
1. Introduction ………………………………… 2
2. Installation ……………………………………. 3
2-1 Unpacking ……………………………………3
2-2 Specifications…………………………………4
2-3 Environmental Requirements ……………. 5
2-3 Setting Up Your Balance …………………. 5
3. Operating your balance …………………….. 6
3 –1 Display and Control Panel ………………. 6
3 –2 Basic Weighing ………………………….. 7
3 –3 Count Weighing ………………………….. 8
3 –4 Percent Deviation ……………………….. 8
4. Calibration …………………………………….. 9
5. Print Setups ……………………………………. 9
6. Communication with a Computer ……..…. 12
6-1 RS232 Interface ……………………………. 12
7. Troubleshooting ………………………………. 13
8. Care and Maintenance ………………………… 14
8-1 Cleaning …………………………………….. 14

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1. INTRODUCTION
To ensure proper operation and performance from of your Accuris Compact
balance, please read this manual in its entirety before use.
Accuris balances have been designed and developed with our scientific
customers’ requirements in mind. The Compact Balance range incorporates gold-
plates capacitance technology, combined with mechanical engineering and
software to provide the following features:
Easy Operation.
Easy to read, large LCD screen with a white backlight;
Rapid weighing speed 10 times faster than mechanical balances;
Capability to tare up to the maximum capacity of the balance;
Multiple weighing modes:
1) Standard weighing
2) Piece counting
3) Percentage weighing
Choice of weighing units: grams, carats, or ounces.
RS-232 interface for connecting peripheral device such as a computer or a
printer;
Alarm to indicate malfunction
Easy, in-lab calibration
2. INSTALLATION
2-1 UNPACKING
CAUTION: Always handle your Accuris balance with care. The internal,
electromechanical components have been assembled and adjusted at our factory
to ensure accurate performance, but mishandling and physical shock can damage
the internal mechanisms.
Carefully remove the balance from the carton and then remove the foam
protective pieces. Check the balance to make sure there has not been any
damage during shipping. Check the contents of the package to make sure you
have received all of the parts:

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Packing List
IMPORTANT: It is recommended to save the cartons and packing materials for
storing and transporting the balance or returning it for any required servicing.
2-2 SPECIFICATIONS
No.
Item
Quantity
1
Compact Balance Unit
1
2
Weigh Pan (top)
1
3
Pan Support (bottom)
1
4
Draft Shield Ring and Cover
(models -120, -300, and -500 only)
1
5
AC power adapter
1
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Operating Manual
1
Model
W3300-120
W3300-300
W3300-500
W3300-1200
W3300-5K
W3300-10K
Capacity
120g
300g
500g
1200g
5000g
10,000g
Calibration
External
Internal “Quick-Cal”
Readability
0.01g
0.1g
Repeatability
(S.D.)
0.02g
0.2g
Linearity (+/-)
0.02g
0.2g
Stabilization
time
Approx. 2 sec.
Operating
temperature
10℃—30℃
Pan size
11.5cm / 4.5 in.
16cm/6.3i
n
18cm/7in
18cm/7in
Draft Shield
Yes, Plastic Ring and Cover
No
Dimensions
(W x H x D)
18.8 x 28 x 8 cm / 7.5 x 11 x 3.1 in
Power
AC 110 to 230V, 50/60 Hz

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2-3 ENVIRONMENTAL REQUIREMENTS
Your Accuris balance is a precision instrument, and requires an environment
which is free from excessive air flow, dust, corrosive elements, vibration and
temperature or humidity extremes. An unsuitable environment will adversely
affect the performance of your balance.
The area and environment where your balance is used should be kept clean
and dry all time;
The optimal operating temperature is 20℃(68℉) and 50% relative humidity;
Always use a stable AC power source that meets the input specifications of
the AC/DC power adapter.
Do not situate the balance:
oIn direct sunshine;
oNext to windows or doors where there can be excessive air movement
or rapid temperature fluctuations;
oNear a heater or air conditioner;
oNear viberating, rotating or reciprocating equipment;
oNear magnetic field or equipment that generates a magnetic field;
oOn an unstable surface;
oIn areas where there are corrosive vapors;
2-4 SETTING UP YOUR BALANCE
CAUTION: Always allow the balance to warm up in its ambient environment for 2
hours prior to use.
1. If the balance is moved from a cold environment to a warmer environment,
condensation may form on the internal components and external surfaces of
the balance and this can cause operating and performance problems.
2. Place the balance on a stable and level surface;
3. Level the balance by turning the 2 adjustable front feet, checking the level
indicator on the balance control panel, until the bubble appears in the center
of the circle;
4. Carefully place the pan support and the pan into position on the weighing
mechanism. These parts should be carefully put into place, no downward
force is required;

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5. If desired to use the draft shield ring (included with models W3300-120, W3300-
300, W3300-500), place it carefully over the Weighing Pan. The bottom edge of the
shield will fit on the outside of the 3 raised locating ridges.
6. Attach the included AC/DC Power Supply adapter to a suitable electrical outlet, and
attached the DC plug end to the balance.
7. The front display should turn on, and the balance will run through a start up
procedure.
8. Upon completion of the start-up procedure, the display will light up and the display
will show 0.00.
9. It is recommended to wait 30 minutes to allow the balance to equilibrate to
the room’s temperature before use.
10. Note that the back light on the display will remain on when the balance is in
use. If the balance is not in use, and there is not a sample on the weigh pan,
the back light will turn off as an energy-saving feature. The W3300 balances
do not have an on/off switch. The power cord can be detached if desired to
turn off the power.
3. OPERATING YOUR BALANCE
It is always recommended to plug in and pre-warm your balance at least 30
minutes before use.
3-1 Display and Control Panel
Leveling Bubble

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The display on the balance has a backlight, and an internal timer will turn off the
backlight (power-save mode) if the balance is not used for a period of time. The
default time delay for back light shut off is one minute, and this time is adjustable by
following these instructions:
Hold the PRINT button and then simultaneously press the % PERCENT button.
This will put the display into the settings mode.
Press the TARE button repeatedly until the display shows “bLI9h7” which
indicates Back LIGHT timer setting. Then press ENTER to choose it.
The display will show the current setting of delay for the backlight to remain on
when the balance is inactive, before shutting off.
For example: “1 nIn “ on the diplay means 1 minute.
Press TARE repeatedly to toggle through the choices of the delay time.
Press ENTER to choose the value. Now the backlight timer is set to the new value.
Display Information
OK: Weight reading shown is stable.
g: Weight reading is shown in grams.
Oz: Weight reading is shown in ounces
Ct: Weight reading is shown in carats
%: Reading shown is given in as a percent weight (see Percent Deviation Mode)
PCS:Reading shown is given in number of pieces (see Count Mode)
UNABLE: Operational Error
HHHHHH: The weight exceeds the capacity of the balance.
LLLLLL: The pan is not properly seated or has been removed.
3-2 Basic weighing
1. Plug in the balance using the included power supply, the balance will turn
on and go through the initial testing. Once completed, the display will
read 0.00g
2. Place a weigh boat or weighing container on the weighing pan
3. Press the TARE key and wait for the display to show 0.00g

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4. Place the sample onto the weighing container
5. The display will stabilize (display will show “OK”) and the weight will be
displayed
3-3 Count weighing
This function is used to determine a total number of pieces of identical
weights. A known number of pieces is weighed as a reference, and the average
weight of each piece is automatically calculated by the balance. An unknown
quantity of pieces can then be placed on the balance and the number of pieces
will be calculated.
1. First set the sample quantity that will be used as the reference quantity
weight. Press the COUNT/ENTER button to scroll through the available
reference quantities, for example: QTY 10, QTY 25, etc. Once the chosen
reference quantity is displayed, place the quantity of pieces onto the
balance.
2. Press the METRIC button, and the display will indicate the chosen reference
number of pieces.
3. Remove the pieces from the weigh pan, and the display should return to 0.
4. Place a quantity of pieces onto the pan to count, and the balance will
calculate and display the number of the pieces.
3-4 Percent Deviation
This mode is used to calculate the percentage of weight that a sample deviates
from a reference weight.
1. Empty the weigh pan;
2. Press the METRIC key to enter the basic weighing mode;
3. Press the TARE key to zero the display;
4. Place the reference weight onto the weigh pan;
5. Press the % PERCENT key, and 100% will be displayed;
6. Remove the reference weight from the weigh pan, and 0.0 % will be
displayed;
7. Place an object to be compared to the reference weight onto the weigh pan.
A percentage value of the deviation between reference and the sample will
be displayed.

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4. CALIBRATION
The following calibration procedure can be used to calibrate the balance to a
known calibration weight standard. Before proceeding, the balance must be
located in a stable environment, equilibrated to the ambient temperature.
The leveling bubble indicator should show that the balance is level and the
weighing pan should be empty and clean.
1. Press the CAL key, then press TARE to scroll through available
calibration weight options (for example 500, 200, 100).
2. When a suitable calibration weight is displayed, wait for “OK” to be
displayed. This indicates that the balance is stable.
3. Press “CAL” again, the display will show “ACAL” to indicate that balance
is ready for calibration.
4. Place the appropriate calibration weight onto the weighing pan and
wait for “OK” to display.
5. The calibrated value (for example 100.00 g) will be displayed when the
calibration is complete.
6. Remove the weight, and the display should return to 0.00.
7. The balance is calibrated.
5. Print Setups
There are three print types:
STABLE Print: print a stable reading when it is attained.
INSTANT Print: print immediately after press the Printkey.
INTERVAL Print: print at predetermined time intervals.
The number of line feeds also is set for label printing.
Note:
The print function is separate from the line feed setup, i.e, set the print function first
then set the number of line feeds.
To set the print type, use the following procedure:
1. Press and hold PRINT key and also press the % PERCENT key, the balance
reads "PrlnT"

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2. Press the COUNT/ENTER key, the balance reads "STAbLE" , which indicates
stable print as the default.
3. Press the TARE key to choose the print type and press COUNT/ENTER to
confirm.
4. Press the TARE key until "lnTEr" is displayed, press COUNT/ENTER and "SEC" is
displayed.
5. Press the TARE key repeatedly to scroll through the available time interval and
press
COUNT/ENTER to confirmm. "O SEC" indicates continuous print.
6. Press the COUNT/ENTER key to return to the weighing mode.
7. After entering print setup, press Tare key repeatedly to choose line feed setup
"LinEFd"
8. Press Tare key repeatedly to see predeternrined line feeds (1-18). Choose the
proper line feeds, press Count/Enter key to return to weighing mode.
Setting the Baud Rate
1. Press and hold PRINT key and also press the % PERCENT key, the balance reads
"PrlnT"
2. Press TARE key, the balance reads "bAud"
3. Press COUNT/ENTER key, the balance reads " 300"
4. Press the TARE key repeatedly, the balance display the other buad rates.
Choose
the proper rate and press COUNT/ENTER to confirm.
5. The balance reads "ParITy" and begins parity check.
6. Press the COUNT/ENTER key, the balance reads "nOnE" (no check) for the first.
7. Press Tare key, it reads the other check types, " Odd" indicates odd check and
"EvEn " indicates even check. Choose the proper check type and press
COUNT/ENTER to confirm, the balance
now returns to weighing mode.
Enabling Units of Measure
The units function can be programmed to turn certain weighing units on or off
To enable or disable certain units of measure, perform the following procedure:
1. Press and hold PRINT key and also press the % PERCENT key, the balance
reads "PrlnT"

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2. Press the TARE key repeatedly until the display reads "unlT"
3. Press the COUNT/ENTER key, the display reads "G yes " which means g
(grams) is available for use.
4. Press COUNT/ENTER to confirm. To disable g as the unit, press TARE key, the
display reads " G no " , press Count/Enter key to confirm.
5. Follow the steps above to enable or disable Oz, Ct or dwt as the unit of
measure.
Restoring the Factory Default Setup
1. Press and hold PRINT key and also press the % PERCENT key, the balance reads
"PrlnT"
2. Press TARE key repeatedly until it reads "InlTlA"
3. Press COUNT/ENTER key to confirm, the display reads "BUSY" and then returns
to weighing mode. Factory default setup is finished.

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6. Communication with a Computer
The basic keyboard functions can be accessed via the RS232 interface. The
following commands are available:
U：Unit ……… units conversion
T：Tare ……… deduct the tare weight
C：Cal ……… calibration with external standard weight
P：Print ……… print function
%：% ……… percent function
# ：# ……… instant print
M：Count……… counting function
When a balance is connected to a computer, it is suggested that immediate print
(#) be used. In response to this command the balance will transmit whatever
number or message appears on the balance display.
The string format output is shown below:
A B C D E F G H I J K L M
A：+/- signs field; usually no display as a space when it is a positve number, -
is displayed when it is a negative number.
B~G：number and decimal field; spaces are used when there are less than six
digits.
H~I：spaces field
J：unit field; it describes the units of the number being transmitted. Your
balance will transmit G for grams, O for ounces, C for carats.
K：stable character; it corresponds to the “OK”indicator on the display. S
means the reading is stable, space means the reading is not
stable.
L：r e t u r n c h a r a c t e r
M：line feeds character; it indicates the line feeds.
7-1 The RS232 Interface Hardware:
This balance adopts the transmit and receive lines of standard RS232.
The data format is 1 start bit / 8 data bits include parity / 1 stop bit

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The instruction to connect the balance to external device is as follows
1 2 3 4 5
6 7 8 9
RS232 pins
PIN DESCRIPTION
2：TXD---- scale transmits data
3：RXD---- scale receives data
5：GRD---- signal ground
Notice:
o“handshake” signals, such as “clear to send” (CTS) are not used. The
peripheral must have a minimum buffer (15 characters).
oIt is suggested that the maximum recommended cable length is 15
meters; the load impedance of the device connected should be
between 3000 and 7000 ohms with no more than 2500 pf shunt
capacitance.
TROUBLE SHOOTING
Problem
Possible Cause
Solution
No Display
·No power
·AC/DC Power Adapter not
functioning, or incorrect
specifications
·Plug in the AC/DC adapter
·Replace the adapter
·Contact the Service
Department
Displayed
weight
value is
unstable
·Unsuitable environment
·Draft shield door is not
closed properly
·There is an object under the
weigh pan
·Install the balance in a
suitable location, avoid
vibration, air movement,
temperature
fluctuations

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·Unstable power supply
exceeds the limit
·The object weighed is
unstable (evaporation or
absorption of moisture)
·Close the door properly
·Remove any objects or
materials that may
obstruct the pan
Weighing
value is not
accurate
·The balance is not
calibrated
·The display is not tared
before weighing
·The balance is not
properly leveled
·Calibrate the balance
·Press TARE key to zero
the display
·Level the balance by
turning the adjusting
feet
8. CARE AND MAINTENANCE
The Accururis Analytical Balance is a high precision instrument that
must be handled carefully and properly maintained.
·Do not use sharp objects（such as a pen or pencil) on the keypad.
·Do not let objects fall on the weighing pan, otherwise the weighing
system can be damaged;
·Do not expose the balance to high temperatures or dust;
·Do not disassemble the balance without proper training or
instructions;
·It is recommended to cover the balance when not in use;
·Keep the balance clean and dry.
8-1 Cleaning
·Unplug the AC adapter before cleaning;
·Do not use any aggressive cleaning agents such as solvents or
alcohols;
·Use a damp, soft cloth with mild detergent such as soap;
·Do not allow any liquids to enter the balance;
·After cleaning, wipe dry the balance with a piece of soft and dry cloth.

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PO Box 709
Edison, NJ 08818
USA
www.benchmarkscientific.com www.accuris-usa.com