Wedderburn WS202 User manual

Operator Manual
for
WS202 Digital Bench Scale

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WS202 Digital Bench Scale
Table of Contents
1. Safety Instructions...................................................................................................................................................3
1.1. Choosing a Suitable Operating Location.................................................................................................3
1.2. Relocation...............................................................................................................................................3
1.3. General Operating Recommendations...................................................................................................3
1.4. Cleaning .................................................................................................................................................. 3
1.5. Routine Inspection and Testing .............................................................................................................. 3
1.6. Electrical Safety ...................................................................................................................................... 4
1.7. Disposal of Battery ................................................................................................................................. 4
1.8. Correct Use.............................................................................................................................................4
2. Inspection Instructions............................................................................................................................................4
2.1. Initial Inspection ..................................................................................................................................... 4
2.2. User Inspection.......................................................................................................................................4
3. Specifications...........................................................................................................................................................5
4. Keys and Display Messages .....................................................................................................................................5
4.1. Keys and Function................................................................................................................................... 5
4.2. Display Messages....................................................................................................................................6
5. Operations...............................................................................................................................................................6
5.1. Preparation............................................................................................................................................. 6
5.2. Switching the Scale On and Off ..............................................................................................................6
5.3. Weighing................................................................................................................................................. 6
5.4. Tare Operation ....................................................................................................................................... 7
5.5. Save Power Function .............................................................................................................................. 7
5.6. Battery Charge Indication....................................................................................................................... 7
5.7. Battery Charge........................................................................................................................................ 7
5.8. Set Parameter......................................................................................................................................... 7
5.9. Units (Change unit）.............................................................................................................................. 9
5.10. To exit counting mode............................................................................................................................ 9
5.11. A-oFF (Choose auto power off）............................................................................................................ 9
5.12. FILtX (Change display mode）................................................................................................................ 9
5.13. Zero (Set range of auto-zero) ...............................................................................................................10
5.14. bUZZEr (set buzzer sound on or off)..................................................................................................... 10
5.15. d (Change division figure).....................................................................................................................10
5.16. On-rA (choose range of power on)....................................................................................................... 10
5.17. d-dP (choose single or dual display) ..................................................................................................... 10
5.18. Display LED Power Setting Mode ......................................................................................................... 10
6. Battery Maintenance.............................................................................................................................................10
7. Trouble Shooting ...................................................................................................................................................11
8. Wedderburn Contact.............................................................................................................................................12

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WS202 Digital Bench Scale
1. Safety Instructions
Before operating this measuring instrument, carefully read all instructions and then save for future
reference.
1.1. Choosing a Suitable Operating Location
When locating your scale please consider the following:
•Ensure operation location of the scale is in a well lit area to be clearly visible and to avoid eye strain
of user.
•Position the scale on a flat and solid platform capable of supporting the weight of the maximum
capacity of the instrument.
•Do not place the scale in a location where damage could result (heat, chemical, impact, etc).
•Position the scale in such a way as to be comfortable for operator to use.
•Ensure the scale is level and stable or stabilize by adjusting screw in feet.
•Avoid sudden temperature changes, the suitable operating temperature for this scale is between -
5°C ~ 35°C.
1.2. Relocation
When relocating your scale from one location to another please use an appropriate moving technique and
ensure that:
•The scale is switched off and disconnected from power before relocation.
•A suitable trolley or other or other suitable means is used for the relocation
•Ensure that the new location is suitable for the task.
1.3. General Operating Recommendations
The following recommendations should be noted when operating the scale:
•Do not overload the scale as this will damage the load cell.
•Be aware that electro-static discharges may cause damage to the scale. Use appropriate measures to
avoid static build up in the instrument operation area.
•Care must be taken with power cord, when charging battery, ensure that it is not placed in a position
where it can become a trip hazard. When operating the scale from battery ensure the power cord
is full enclosed in the scale body in the space provided.
1.4. Cleaning
Regular cleaning of the scale is recommended.
•Use a clean cloth to remove any residual waste from the scale body and connections.
•Do not use abrasive scrubs or cleaning agents.
•Stainless
Note:
The scale must not be dismantled.
1.5. Routine Inspection and Testing
Regular inspection and testing of this scale should ensure trouble free and safe operation.

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WS202 Digital Bench Scale
1.6. Electrical Safety
The WS202 scale is powered by a internal 6V 4.5Ah rechargeable battery.
This battery is recharged by connection to a 240V supply a 12V 0.83A transformer fitted within the scale
body.
Where possible, the use of an approved RCD (Residual Current Device) connected to 240V power circuits is
recommended.
1.7. Disposal of Battery
Be mindful that batteries contain heavy metals and toxic elements such as nickel, cadmium, mercury and
lead acid. If batteries are disposed of in land fill these elements can leak out and damage our environment.
Please consider disposal of used batteries in recycle programs.
Recycle programs that are set up to dispose of used batteries:
•Contact your local council for recycling options.
1.8. Correct Use
•Ensure that staff that will be using the WS202 scale are instructed in the correct use of the
instrument and are made aware of the above safety instructions.
•Incorrect use, placement or handling of the scale may result in damage and possible injury.
2. Inspection Instructions
2.1. Initial Inspection
Upon receiving your new WS202 scale you should:
•Unpack the scale carefully.
•Check the scale immediately after unpacking for externally visible damage.
•Ensure that scale is complete and that all parts are present.
If there is any issue regarding the results of this inspection, please do not use the scale but contact
Wedderburn Online immediately.
2.2. User Inspection
Periodically inspect your WS202 scale to ensure that it is still in good order. Ensure that regular user
inspections of your equipment have been performed.
If faults are found, please contact Wedderburn to have it rectified.

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WS202 Digital Bench Scale
3. Specifications
Display
14mm LED x 6 digit
Scale weight
3.9kg
Body material
Stainless steel cover over plastic housing
IP rating
IP-68 (waterproof)
Operating Temp.
- 10°C ~ + 35°C
Internal battery
6V4.5Ah rechargeable battery
4. Keys and Display Messages
4.1. Keys and Function
KEY
NAME
FUNCTION
ON / ZERO
Press to turn the scale on
Press to zero the scale
Long press to enter LED power setting mode
TARE
Press to operate tare
Press to confirm
Press to exit
Long press with power on to enter Calibration
OFF
Press to power off the scale
SET
Press to enter parameters
Press to select parameters
ON/ZERO
SET
(0~9)
OFF
TARE

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WS202 Digital Bench Scale
4.2. Display Messages
Displayed
Meaning
dc x.xx
Means the voltage of battery is x.xx Volts.
- - - - - -
Indicates the weight over 100%FS+9e, with the beeping sound, this means
over load, reduce the weight
bATLo
The battery voltage is low. Battery requires recharging.
Only charge when the bATLo is displayed
c _End
Battery Recharge has ended
Err-0
Overload zero of load cell. Please reduce the tare.
5. Operations
5.1. Preparation
Place WS202 scale in location where it is to be used. Adjust leveling feet until the leveling bubble is
centrally located this will ensure the weighing pan is in a horizontal position.
5.2. Switching the Scale On and Off
Switch on
Press the [ON/ZERO] key, the software version number will be displayed followed by the battery level
voltage (dc-x.xx). The scale will then start a display check running through from 999999 to 000000, all the
indicator lamps will light then go out.
Then the “ZERO” indication lamp will light and the display shown “0”. Now the scale is read to use.
Switch off
Press the [OFF] key to power off the instrument.
Auto-off
After 10 minutes in zeroing, auto-off.
Low voltage auto-off
When the battery voltage falls below 5.6V, then instrument will automatically power-off.
ZERO
The instrument can be returned to zero if the weight display is ≤4% maximum capacity (without Tare).
With the instrument switched on, press the [ON/ZERO] key, the instruments display will shows “0” and the
“ZERO” indication lamp will light
5.3. Weighing
Once instrument is zeroed, place load on to the weighing pan. The load weight value will be displayed on
the scales displays.

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WS202 Digital Bench Scale
5.4. Tare Operation
Tare is used if a tare weight is required to be removed from the gross weight, for example the weight of a
container.
Without weight applied ensure the display indicates “0” weight by pressing the [ON/ZERO] key. Place the
container only upon the scale weighing pan, the weight of the container will be displayed. Press the [TARE]
key to remove this weight value and the display will indicate “0” but now the lamp over the “TARE”
wording will be lit. Now add the required load and the NET weight value will be displayed.
When the load and tare weights are removed from the weighing pan the display will show a negative value
and the lamps over the “ZERO” “TARE” wording will both be lit. Press the [TARE] key to remove the tare
value. The scale will now display “0” and now only the lamp over the “ZERO” wording will be lit.
5.5. Save Power Function
After 40 seconds of inactivity the scale will go to auto save power mode. To indicate the scale is in Auto
save power mode the display will indicate a small “o”.
To wake the scale, add weight to the weighing pan.
5.6. Battery Charge Indication
The battery charge level indicators are located to the left side of the display and show fully charge (higher
than 6.3V), half charge (between 6V and 6.3V) and low charge (less than 6V).
5.7. Battery Charge
Power to the scale is supplied by an internal rechargeable lead acid battery (6V/4.5Ah). When the display it
indicates “-bAtLo- “then the battery requires recharging. The 240V power lead for charging is located by
sliding the cover plate from the base of the scale. Connect the 240V power lead to the supply and switch
on, you may continue using the scale if required or switch it off for full recharging.
5.8. Set Parameter
To display the different parameters of the scale Press and hold the [SET/0~9] key for 3 seconds to show the
menu, then release the key.
To step throught the parameter options press the [SET/0~9] key again to move to the next parameter.
The parameter menu are as follows:
•rAngE (set limit)
•UnItS (choose unit)
•oFF (choose auto power off)
•FILt (set display mode)
•Zero (set auto zero)
•bUZZEr (set buzzer)
•d (choose division)
•on-rA (choose range of power on)
•d-dP (choose single or dual display)
Press [SET/0~9] key is the select key,
Press [TARE] key is to confirm,
Press [TARE] key again to exit

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WS202 Digital Bench Scale
Range setting for HI / OK / LOW indication:
Switching on the parameter
When the display shows “rAngE”, press the [TARE] key and then press the [SET/0~9] key to choose “on” or
“oFF”.
“on” is to start the function, oFF is exit, press the [TARE] key to confirm.
If “on” was choosen.
•The indicator next to the LOW wording on the righ side of the display will now be lit and the display
shows all zeros with one flashing.
•The Low limit will now be required to be set. Press the [SET/0~9] key to change the unit untill the
required unit is reached. Press the [TARE] key to set this unit and move to the next lowest (move
one unit right), set this in the same way if required. Press the [TARE] key until it has moved all the
way through the units until the Low indicator light has gone out and now the HI indicator light is
on. Set the Hi (upper) level setting in the same way as the Low limit. Step through the display digits
until the Hi indicator light goes out and “on” is again shown on the display. The scale will then set
and return to the weighing mode.
Incorrect setting
If the low limit is set greater than the hi limit, the rAngE parameter displays “off”, then will exit the
parameter setting.
If set correctly the scale will Indicate
If “??????” is the weight indicated on the display
•when “??????”≥high limit, “HI”lamp is lit.
•When low limit < “??????”< high limit, “OK”lamp is lit.
•When “??????”≤low limit, “LOW” lamp is lit.
•When the weight upon the weight pan is unstable, no lamps are lit.

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WS202 Digital Bench Scale
5.9. Units (Change unit）
Select unit or counting
When the display shows “units”, press the [TARE] key and then press the [SET/0~9] key to choose unit,
then press the [TARE] key to confirm and exit.
The units that can be choosen: H9(kg), 9(g), Lb.lb, Lb.oz or pcs(counting).
When display returns to weight mode the unit that was selected is indicated by a lit lamp over the unit
wording printed at the bottom of the display window.
If PCS (counting mode) is selected:
When “pcs” is displayed, press the [TARE] key. Now lamp over “pcs” is lit.
To set the weight and number of samples for counting.
Long time press the [ON/ZERO] key, the display will show “count”and return to “0”.
Place a number of samples upon the weighing pan (The weight should less than Max. capacity) and press
the [TARE] key. The display shows all zeros with one flashing, the lamp above the PSC will also be flashing.
To set the sample number, press [SET/0~9] key to add 1 to the flashing unit number or move to next lowest
digit by pressing the [TARE] key. Press the [SET/0~9] key moving down through the digits untill the scale
returns to count mode. The unit count is displated.
Remove sample load and add load to be counted. The display will indicate the count.
Note:
The greater the number of the sample units the greater the accuracy of the count.
5.10. To exit counting mode
Re enter units by pressing and holding the [SET/0~9] key, press the [TARE] key to enter and then select
another unit with the [SET/0~9] key. Press [TARE] key to confirm.
5.11. A-oFF (Choose auto power off）
When menu displays “A-oFF”, press the [TARE] key to enter, press the [SET/0~9] key to choose “no”or
“yes”. “no”is no auto power off,”yes”is after 10 minutes without weight applied the scale will auto power
off.
5.12. FILtX (Change display mode）
When menu displays “FILtX” , press the [TARE] key to enter,. press the [SET/0~9] key to choose FILt-1,
FILt-2 or FILt-3. Press the [TARE] key to confirm and exit.
FILt-1: Display renew speed is slow.
FILt-2: Display renew speed is fast.
FILt-3: Display renew speed is faster.

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WS202 Digital Bench Scale
5.13. Zero (Set range of auto-zero)
When menu displays “zero”, press the [TARE] key, now show zero x.xE
(x.x is the range, displayed by Test division:0.5, 1.0, 1.5, 2.0, 2.5, 3.0E, 3.5, 4.0, 4.5, 5.0.). Press the
[SET/0~9] key to choose and the [TARE] key to confirm.
5.14. bUZZEr (set buzzer sound on or off)
When menu displays “bUZZEr”, press [TARE] to enter, press the [SET/0~9] key to choose “on”or “off”,
press the [TARE] key to confirm.
5.15. d (Change division figure)
When menu displays “d”, press the [TARE] key to enter, then press [SET/0~9] to choose division. There are
3 divisions setting to choose from. Note: the lower the division setting the slower the display renews speed
will be.
5.16. On-rA (choose range of power on)
When menu displays “On-rA”, press the [TARE] key to enter, press the [SET/0~9] key to choose “20”or
“100”. 20 = 20% Maximum capacity, 100 = 100% capacity. Press the [TARE] key to confirm.
5.17. d-dP (choose single or dual display)
When menu displays “d-dP”, press the [TARE] key to enter, press the [SET/0~9] key to choose “no”or
“yes”.
no = Operator display only (single display)
yes = both front and back displays working (dual display).
Press the [TARE] key to confirm.
5.18. Display LED Power Setting Mode
With scale powered on, Press the [ON / ZERO] key untill display shows “LC-1”.
Press the [SET/0~9] key to choose LU-1 or LU-2.
LU-1 is saving mode (recommend), LU-2 is brighter.
Press the [TARE] key to confirm.
6. Battery Maintenance
The 6 volt battery used with the WS202 counting scale is sealed lead acid type and therefore does not
require any maintenance other than ensuring the battery is fully charged. To ensure maximum life from
your scales battery ensures that unused scales are recharged at least every 3 months. Full battery recharge
can take up to 12 hours.
A faulty battery will not hold a charge or will not hold it for long and require recharging often, if this is the
case contact Wedderburn for replacement.

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WS202 Digital Bench Scale
7. Trouble Shooting
Symptom
Possible Cause
Suggested Solution
Blank display when Power
ON/ZERO button is depressed
Discharged battery
Recharge the battery
Defective battery
Contact Wedderburn Online for
suitable replacement battery
Corroded battery
Clean connections
Power button not properly
depressed
Press Power On/Off firmly and hold
until power turns on.
“- - - - - -“is display
The weight applied to the
weight pan is over 100%
maximum capacity +9e
Remove some or all of weight
“bATLo” is displayed
The battery voltage is low.
Battery requires recharging.
Display reading not stable
The scale is in motion
Wait until the scale is stable
The load is not stable
Wait until the load is stable
Large error in weight reading
The scale is not zeroed
before applying load
Zero the scale before loading
Requires re-calibration
See section 7 for calibration
instructions
In correct weighing unit
lb/kg/g
Set correct measuring unit, see
section 5.9.2
In Counting mode (lamp on
over “PCS” wording)
Scale will not enter calibration
mode (ERROR 2)
Calibration switch in
incorrect position
See section 7 for calibration
instructions

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WS202 Digital Bench Scale
8. Wedderburn Contact
For any further enquiries, please contact your local Wedderburn branch.
Phone: [phone]
Fax: [phone]
Website: www.wedderburn.co.nz