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OAC/OEC/OVC SERIES
This document hosted by: www.oldwillknottscales.com
DIGITAL COUNTING AND CHECKING SCALE
CONTENTS
1. INSTALLATION
OPERATION MANUAL
PLEASE READ THIS MANUAL VERY CAREFULLY BEFORE
ATTEMPT TO OPERATE THE SCALE
AUGUST 1999
2. SPECIFICATIONS
3. KEYBOARD, PANEL LAYOUT AND DESCRIPTION
4. INTERNAL SETTINGS
5. INSTRUCTION FOR USE
6. TROUBLE SHOOTING
7. DAILY CARE AND MAINTENANCE
Specifications subject to change without prior notice
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1. INSTALLATION
1.4 Retain the packing materials for future
1.1 Check and make sure that the following
accessories are included:
a. This operation manual
b. Scale x 1
c. Platter x 1
d. Power adaptor or Power Cord x 1
e. Dust cover x 1
Contact your dealer if any items are missed.
1.2 Insert the platter into the scale carefully.
No excessive force is required.
1.3 POWER THE SCALE
a. Before plugging the power adaptor (or power
cord) into an electricity outlet, check and
make sure that the input voltage of power
transportation purposes.
CAUTION:
In some countries, this unit is required by
law to be sealed (or stamped) and bearing a
serial number. Do not break or remove the seal
(or stamp) or serial affixed to this scale.
Such actions may be an offend in law and void
warranty. Contact your dealer for more
information or after sales service.
For most accurate result, do not use this scale
when environment condition fall beyond those
as listed on SPECIFICATIONS.
Do not attempt to open this unit or any trouble
shooting other than those listed on TROUBLE
adaptor matches with the output voltage of
the outlet. If not, do not plug in the adaptor,
contact your dealer immediately.
b. Before first time use, plug the main adaptor
(or power cord) into the wall outlet and
charge the scale for at least 8 hours.
SHOOTING.
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2. SPECIFICATIONS
in
Rechargeable Battery or Power
in Power Pack or
2.2 MINIMUM PIECES, WEIGHT APPLIED & SAMPLE
2.1 GENERAL SPECIFICATIONS
Model No. Capacity Division
OAC-1.2 1200g 0.1g
OAC-2.4 2400g 0.2g
OAC-6 6000g 0.5g
OAC-12 12kg 1g
OAC-24 24kg 2g
OEC-1.2 1200g 0.2g
OEC-3 3000g 0.5g
OEC-6 6000g 1g
OEC-12 12kg 2g
OEC-30 30kg 5g
OVC-1.2 1200g 0.1g
OVC-2.4 2400g 0.2g
OVC-6 6000g 0.5g
OVC-12 12kg 1g
OVC-24 24kg 2g
Tare Range FULL RANGE (SUBTRACTIVE)
Zero Range Maximum = 2% of Rated Capacity
Auto Pieces Weight Enhancement Range:
Min. = 4 pieces
Max. = Max. count previously achieved
Operation
Environment
Power source OAC & OEC: By Built-
0o~40oC (32o~104oF),
Non-condensed. R.H.¡85%
SIZE SPECIFICATIONS
Recommended Minimum Model No.
Piece
Weight
OAC-1.2 0.1g 2g 400g
OAC-2.4 0.2g 4g 800g
OAC-6 0.5g 10g 2000g
OAC-12 1g 20g 4kg
OAC-24 2g 40g 8kg
OEC-1.2 0.2g 4g 400g
OEC-3 0.5g 10g 1000g
OEC-6 1g 20g 2000g
OEC-12 2g 40g 4kg
OEC-30 5g 100g 10kg
OVC-1.2 0.1g 2g 400g
OVC-2.4 0.2g 4g 800g
OVC-6 0.5g 10g 2000g
OVC-12 1g 20g 4kg
OVC-24 2g 40g 8kg
Weight
Applied
Sample
Size
Adaptor (or Power Cord)
OVC: By BuiltPower Adaptor
Specifications subject to change without notice
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3. KEYBOARD & PANEL LAYOUT AND
DESCRIPTION
KEYBOARD & PANEL LAYOUT (OAC & OEC)
KEYBOARD & PANEL LAYOUT (OVC)
DESCRIPTION
1. NUMERIC AND DECIMAL KEYS
Press these keys to attain the desired numeric
value.
2. CLEAR KEY
Press this key to clear the numeric figure
entered.
3. UNIT PIECE WEIGHT SET KEY
Press this key to enter a unit piece weight.
4. NUMBER SET KEY
Press this key to enter the number of pieces
on platter.
5. M+ KEY
Press this key to add current total count to
memory.
6. MR KEY
Press this key to recall individual counting
result and accumulated total counts.
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13. ZERO INDICATOR
7. MC KEY
Press this key to clear all data kept in memory.
8. TARE KEY
Press this key to tare off the weight of a
container. Refer to SPECIFICATIONS for maximum
tare range.
9. ZERO KEY
Press this key to set weight to zero. Refer
to SPECIFICATIONS for maximum zero range.
10. CHECK KEY
Press this key to set upper weight and count
check limit.
When a zero weight is detected, an arrow will
appear and point at this indicator.
14. TARE INDICATOR
When the tare function is in operation, an arrow
will appear and point at this indicator. The
weight being displayed on the WEIGHT PANEL is
the net weight.
15. LO-BAT INDICATOR
When the battery inside scale is low, this
indicator would light on (keep flushing for
OVC). Recharge the scale immediately. Failure
to do so may cause unrecoverable damage to the
battery.
(OVC) This indicator would remain light on when
11. PLU PRESET SET KEY
Press this key to set a unit piece weight to
PLU.
12. PLU RECALL KEYS
Press these keys to recall the unit piece weight
stored in the corresponding PLU location.
the unit is under standby status.
16. CHARGING INDICATOR
This indicator shows the recharging status of
the battery. Red color: Recharging battery;
Green color: Charging completed
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17. M+ INDICATOR (OAC & OEC)
4. INTERNAL SETTINGS
This indicator will appear when memory is
containing accumulated transaction data.
18. WEIGHT PANEL
The current weight detected is shown here.
19. UNIT PIECE WEIGHT PANEL
The current unit piece weight entered is shown
here.
20. TOTAL COUNT PANEL
Total count of the current or accumulated
transactions is shown here.
POWER KEY
The power key is located at the left-hand bottom
side of the lower housing. Press this key
4.1 PLACE THE SCALE
Place this unit on a hard and strong surface,
where is free from RF interference, vibration,
fire, direct sunlight and excessive
moisture.
For most accurate weighing result, always
place this unit on a level surface. If
necessary, adjust the adjustable feet
underneath the scale to obtain a level
condition.
4.2 POWER ON/OFF THE SCALE
Press ON/OFF forward/backward to turn scale
on/off.
4.3 INTERNAL SETTINGS
forward to turn scale on or backward to turn
scale off.
4.3.1 (OAC & OEC) Set Backlight (Option)
Status
4.3.1.1 Turn backlight on: - Power Saving Mode
a. Turn scale on.
b. Press 1 then press ZERO.
c. Backlight is turned on.
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NOTE: Under the Power Saving Mode, backlight
NOTE: Under the Power Saving Mode, the unit
will be automatically turned off after weight
displayed is unchanged for about 20 seconds.
Backlight will be turned on again by pressing
any key or when a new weight is detected.
4.3.1.2 Turn backlight on: - Without Power
Saving Mode
a. Turn scale on.
b. Press 2 then press ZERO
c. Backlight is tuned on.
NOTE: Backlight under this mode will remain
lit on until manually turned off.
4.3.1.3 Turn backlight off
a. Turn scale on.
b. Press 0 then press ZERO
c. Backlight is turned off.
will automatically enter standby mode after
weight displayed is unchanged for about 20
seconds. When the unit is under standby
status, the LO-BAT INDICATOR will light on.
The unit will return to normal operating
mode by pressing any key or when a new weight
(¡ ¡8 divisions) is detected.
4.3.2.2 disable standby function
a. Turn scale on.
b. Press 2 then press ZERO
c. Power Saving Mode is now disabled
4.3.3 Set AUTO POWER OFF Status
This unit is equipped with AUTO POWER OFF
function. Default setting = auto off after 4
4.3.2 (OVC) Set Standby Status
4.3.2.1 Employ standby function: - Power Saving
Mode
d. Turn scale on.
e. Press 1 then press ZERO.
f. Power Saving Mode is now employed.
minutes unused. Follow the below steps to
disable/employ the AUTO POWER OFF function.
a. Turn scale off
b. Press and hold NUMBER SET, then turn scale
on. Scale displays ¡F.1¡
c. Press NUMBER SET for three times. Scale
displays ¡F.4¡¨
d. Press @WT/SET to select:
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* To disable the AUTO POWER OFF function
5. INSTRUCTIONS FOR USE
select ¡0-OFF¡
* To employ the AUTO POWER OFF function select
¡4-OFF¡
e. Press ZERO to confirm and return to normal
operation status.
5.1 ZERO THE WEIGHT DISPLAYED WHEN UNLOADED
If ZERO INDICATOR does not appear when the unit
is not loaded, press ZERO to set weight
displayed to zero. Refer to SPECIFICATIONS for
maximum zero range.
5.2 ENTER/CLEAR THE WEIGHT OF A CONTAINER
5.2.1 Enter Weight of a Container
Place a container onto the platter, and then
press TARE to tare off the weight of this
container. After TARE is pressed, zero weight
will be displayed and the TARE INDICATOR
appears.
5.2.2 Clear Weight of a Container from Memory
To clear the weight of the container, remove
the container and all loads from platter and
press TARE, then TARE INDICATOR would
disappear.
5.3 PLACE A LOAD
Always place a load onto the platter gently.
Sudden shock/excessive force may cause
irrecoverable damage to the weight sensor
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inside. It is a good practice to remove all
and the quantity is displayed on the TOTAL
loads from platter immediately after weighed.
This would prolong the lifetime of the weight
sensor.
5.4 WEIGHING APPLICATIONS
Before weighing, make sure that the ZERO
INDICATOR is on. Should a container have to
be used, refer 5.2.1 to tare off the weight
of the container.
Place subject matter on platter and the weight
of it is displayed on WEIGHT PANEL.
For best weighing result, refer to
SPECIFICATIONS for recommended minimum weight
to be applied.
COUNT PANEL.
NOTE 1: For best counting result, refer to
MINIMUM PIECES, WEIGHT APPLIED & SAMPLE SIZE
SPECIFICATIONS for recommended minimum piece
weight and weight applied.
NOTE 2: When the individual unit piece weight
is not standardized, it is strongly recommended
that counting procedures as described in 5.6
should be employed.
NOTE 3: Under this method, the AUTO PIECE WEIGHT
ENHANCEMENT function will be disabled for same
subsequent counting.
5.6 COUNTING APPLICATIONS: - UNIT PIECE WEIGHT
5.5 COUNTING APPLICATIONS: -
UNIT PIECE WEIGHT IS KNOWN AND FIXED
a. Refer to 5.1 and 5.2 for zero and tare
b. Enter the unit piece weight and confirm by
pressing @WT/SET. The unit piece weight is
now displayed on the UNIT WEIGHT PANEL.
c. Place load on the platter. The weight of
the load is displayed on the WEIGHT PANEL
IS NOT KNOWN
a. Refer to 5.1 and 5.2 for zero and tare
b. Go through sampling procedures. (Refer to
5.7 SAMPLING for more details).
c. Step by step add more load onto the platter
(or remove part of the load from the platter).
The latest Weight, unit piece weight and
total quantity would be displayed on the
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corresponding panel.
NOTE: For best counting result, refer to
NOTE 1: In case of adding, do not empty load
from platter until the transaction is
completed.
NOTE 2: Also refer to 5.8.1 HOW AUTO UNIT PIECE
WEIGHT ENHANCEMENT FUNCTION WORKS for more
details
5.7 SAMPLING
Should the unit piece weight is unknown, follow
the below procedures to get the unit piece
weight.
a. Place a sample with known quantity on
platter
b. Enter the quantity of the sample through
MINIMUM PIECES, WEIGHT APPLIED & SAMPLE SIZE
SPECIFICATIONS for recommended minimum piece
weight and sample size
5.8 AUTO PIECE WEIGHT ENHANCEMENT FUNCTION
In order to obtain the best counting result
and to avoid and minimize sampling error, this
scale is equipped with the AUTO UNIT PIECE
WEIGHT ENHANCEMENT function.
This function will automatically be employed
when the unit piece weight is obtained through
the sampling method as described in 5.7.
5.8.1 How AUTO UNIT PIECE WEIGHT ENHANCEMENT
FUNCTION Works
the numeric keypad and confirm by pressing
NUMBER SET.
c. The scale will automatically determine the
unit piece weight. The unit piece weight
will then be displayed on the UNIT WEIGHT
PANEL.
d. Sampling process is now completed.
After a unit piece weight is obtained by methods
as described in 5.7, then place more loads onto
the platter. The new quantity will be shown
on the TOTAL COUNT PANEL.
The AUTO UNIT PIECE WEIGHT ENHANCEMENT function
will update the unit piece weight if both
requirements of below are met:
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c. Scale displays "TOT 1" on the WEIGHT PANEL,
a. The quantity added to platter is more than
4 pieces of previous maximum counts
previously attained from the same
transaction.
b. The quantity added to platter is less than
100% of previous maximum counts previously
attained from the same transaction.
If the above requirements are met, a new unit
piece weight will be displayed on the UNIT
WEIGHT PANEL and confirmed by an audio "beep".
AUTO UNIT PIECE WEIGHT ENHANCEMENT function
will be terminated when a zero weight is
detected during the transaction process.
It is strongly recommended that this function
1 donates this is the first memory entered.
The weight and total count of current
transaction are saved to memory.
d. The M+ INDICATOR (OEC & OAC) appears to
indicate that memory is now containing data.
e. Repeat above steps for subsequent counting
transactions.
NOTE 1: If no unit piece weight is applied,
only weight data will be saved to memory.
NOTE 2: A quantity value could be manually added
to memory by entering the quantity and then
press M+.
5.10 RECALL ACCUMULATED DATA FROM MEMORY
a. Press MR
should be employed when the unit piece weight
is unknown or when the individual unit piece
weight is not standardized.
5.9 ACCUMULATED COUNTING TRANSACTION
a. Obtain a transaction result 5.5 and 5.6
b. Press M+ to save weight and total count to
memory.
b. Scale displays "TOT #" on the WEIGHT PANEL.
# donates the total number of entries saved
to memory. Then, the total accumulated
weight and total count are displayed on the
WEIGHT and TOTAL COUNT PANEL respectively.
c. The scale will return to normal operating
status 2 seconds after the accumulated data
is displayed.
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UNIT WEIGHT PANEL.
NOTE: Data stored will be erased when the scale
is turned off.
5.11 TO CLEAR ACCUMULATED DATA FROM MEMORY
a. Press MC
b. Scale displays "TOT 0" on the WEIGHT PANEL.
0 donates no entry is saved to memory. Then,
zero weight and zero count are displayed
on the WEIGHT and TOTAL COUNT PANEL
respectively. The arrow pointing at the M+
INDICATOR (OEC & OAC) will disappear.
c. All data is cleared now.
d. The scale will return to normal operating
status 2 seconds after the accumulated data
is erased.
5.12 CHECK FUNCTIONS
b. Key in the upper weight limit through the
numeric keypad and confirm by @WT/SET, or
press CLEAR to quit.
c. When @WT/SET is pressed, scale displays
CH._A and upper weight limit entered on the
UNIT WEIGHT and WEIGHT PANEL respectively.
d. Wait until the scale return to normal
operating status.
e. The upper weight limit is now stored in
memory.
NOTE: The upper weight limit stored in memory
will be erased when scale is powered off.
f. Start counting transaction. When the upper
weight limit is reached or exceeded, a
continuous audio beep alarm will be
generated.
This scale is equipped with Check Function to
monitor upper weight limit or upper count
limit.
5.12.1 Monitoring the Upper Weight Limit
Follow the below steps to monitor the upper
weight limit.
a. Press CHECK, scale displays CH._C on the
5.12.2 Monitoring the Upper Count Limit
Follow the below steps to monitor the upper
count limit.
a. Press CHECK, scale displays CH._C on the
UNIT WEIGHT PANEL.
b. Key in the upper count limit through the
numeric keypad and confirm by NUMBER SET,
or press CLEAR to quit.
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c. When NUMBER SET is pressed, scale displays
b. Press 0
CH._C and upper count limit entered on UNIT
WEIGHT and TOTAL COUNT PANEL respectively.
d. Wait until the scale return to normal
operating status.
e. The upper weight limit is now stored in
memory.
NOTE: The upper count limit stored in memory
will be erased when scale is powered off.
f. Start counting transaction. When the upper
count limit is reached or exceeded,
continuous audio beep alarm will be
generated and the count value shown on TOTAL
COUNT PANEL will start flashing.
5.12.3 Clear Upper Weight Limit
a. Press CHECK
b. Press 0
c. Press NUMBER SET
d. Wait until the scale return to normal
operating status.
e. The upper count limit is now erased from
memory.
5.13 UNIT PIECE WEIGHT PLU MEMORY
5.13.1 Saving a Unit Piece Weight to PLU Memory
This scale is equipped with 8 unit piece weight
PLU memories. Save a unit piece weight to memory
by one of the following methods.
5.13.1.1 Direct entry method
a. Key in the unit piece weight through keypad.
Make sure the unit piece weight does not
exceed 5 figures disregarding decimal
c. Press @WT/SET
d. Wait until the scale return to normal
operating status.
e. The upper weight limit is now erased from
memory.
5.12.4 Clear Upper Count Limit
a. Press CHECK
location.
b. Press PRESET.
c. Press the preferred PLU location to store,
or press PRESET again to quit.
5.13.1.2 Current unit piece weight method
a. When a unit piece weight is displayed on
the UNIT WEIGHT PANEL, press PRESET.
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Press the preferred PLU location to store, or
a. Create BASIC computer program file as below
press PRESET again to quit.
NOTE: Data stored in Unit Piece Weight PLU will
not be erased when scale is powered off.
5.13.2 Recall Unit Piece Weight from Memory
To recall unit piece weight stored in memory,
simply press the corresponding Unit Piece
Weight PLU.
After the PLU is pressed, the unit piece weight
will be displayed on the UNIT WEIGHT PANEL.
NOTE: The AUTO PIECE WEIGHT ENHANCEMENT
function will be disabled for same subsequent
counting if the unit piece weight is recalled
from memory.
5.13.3 Clear Unit Piece Weight PLU
to enable the computer to receive data sent
by scale.
10 OPEN "COM*:2400, N,8,2,CS,DS,CD" AS#1
*: Input 1 if the input port of computer
is COM 1, or input 2 for COM 2 ...etc.
20 LINE INPUT #1, A$
30 PRINT A$
40 GOTO 20
50 END
b. Save the above program file.
5.14.2 Connect the Scale with a Computer
Follow the below steps to connect the scale
with a computer.
a. Turn scale off
a. Press 0
b. Press PRESET
c. Press preferred PLU location to clear, or
press PRESET again to quit.
5.14 COMPUTER DATA RS232C OUTPUT (Option)
5.14.1 Create a Program File
b. Turn computer off
c. Connect the RS232C output of scale to
computer by a appropriate data cable
d. Turn scale on
e. Turn computer on
f. Load and run the BASCIA program file
5.15 PRINTER OUT (OPTION)
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By pressing the M+ and MC, the follow data will
total accumulated weight and count number are
be transmitted to computer.
S/N WT UW CT/N (NOTE 1)
01. 78 1.0000 78
02. 580 2.0000 290 (NOTE 2)
0.3 +++ 100 (NOTE 3)
03/ 658 468 (NOTE 4)
NOTE 1:
S/N = Serial Number, WT = Weight, UW= Unit Piece
Weight, CT/N = Count Number. An underlined
heading will be transmitted if M+ is pressed
for the first time.
NOTE 2:
By pressing M+ again, the data of 2nd transaction
transmitted.
A consecutive dot line sent before the
accumulated result donates the total
accumulated value.
5.16 RECHARGE THE SCALE
When the LO-BAT INDICATOR appears, recharge
the scale immediately. Fail to do so will damage
the rechargeable battery inside. Recharging
is possible during operation. The charge status
is indicated by the In-Charge indicator as
below:
RED: Rechargeable battery is being recharged.
GREEN: Rechargeable battery is completely
charged.
is transmitted.
NOTE 3:
+++ donates that the count number is added to
memory by manual entry.
NOTE 4:
By pressing MC, the total number of transaction,
NOTE: (OVC) The power pack can be taken out
from the scale and recharged with the power
adaptor. Should additional recharged power
pack is available, use it to replace the faded
one within the scale immediately.
The power pack is also equipped with the charge
status indicator. Refer to the above for
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charging status color code.
6. TROUBLE SHOOTING
Syndrome Scale cannot be turned on
Check: Is the scale charged?
Action: Recharge the scale for at least 8
hours before first time use or plug
in the power adaptor before power
on the scale.
Check Is the power adaptor inserted
properly into both the electricity
outlet and the DC inlet of scale?
Action: Secure both ends of the power adaptor
and try again.
Syndrome Scale turned off automatically
Check Is the AUTO POWER OFF function
employed?
Action Refer to 4.3.3 to disable the AUTO
POWER OFF function.
Check Is the LO-BAT INDICATOR on?
Action Apply the power adaptor.
Syndrome Rated capacity cannot be reached
Check Is the TARE INDICATOR on?
Action: Turn the scale off. Remove all loads
from platter and turn on again.
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Check Is there anything obstructing the
Syndrome Weighing result is not accurate
platter?
Action Remove all obstacles.
Syndrome When turning on scale, all display
PANEL blank out but only the Zero
and TARE INDICATOR appear
Check Is any load applied to platter when
turning scale on?
Action: Turn scale off. Remove all loads from
platter and turn scale on again.
Check Is the platter inserted properly?
Action: Turn scale off. Insert platter
properly and turn scale on again.
Syndrome Weight and TOTAL COUNT PANEL blank
out during operation
Check Does the load applied to platter
Check Is the scale placed in a level
condition?
Action Adjust the adjustable feet to a level
condition.
Check Is the scale affected by airflow,
vibration or RFI?
Action: Place the scale away from all
disturbances.
Check Is the scale calibrated correctly?
Action Contact your dealer.
exceed the rated capacity of scale?
Action Remove all loads from platter and
try again.
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7. DAILY CARE AND MAINTENANCE
a. Clean the scale with a soft and damp cloth.
If necessary, apply a mild detergent.
b. Do not use any harsh, abrasive material,
acetone, volatile solvent, thinner or
alcohol for cleaning.
c. Verify the accuracy of scale periodically.
NOTE: In some countries, calibration is
restricted to be done by an
authorized/qualified agent only. Contact
your dealer for more information.
d. It is a good practice to apply the dust cover
when operating the scale.
e. The scale must be placed horizontally during
transportation or long time storage.
f. Remove platter from scale before
transportation or long time storage.
g. Store scale in a dry and clean place.
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