PT WS1V Series User guide

WS1V
Weighing Scale
Set Up Manual
Rev. 7.8.30
Innovative Measurement Electronics

Thank you for purchasing a PT Electronic Digital Scale. In order to use the
scale properly, please read this Manual carefully before use. If you have a
problem concerning the scale, please contact your supplier.
PT regularly updates and issues new information regarding products, the
most up-to-date information and additional detailed information is located on
the PT web site.
www.pt-global.com

WS1V Set Up Manual Rev. 7.8.30gll
1 TABLE OF CONTENTS
1 TABLE OF CONTENTS....................................................................................................................1
2 BEFORE USING THE SCALE..........................................................................................................2
3 PREPARING TO USE THE SCALE..................................................................................................3
4 FEATURES AND SPECIFICATIONS................................................................................................4
4.1 Features:................................................................................................................................4
4.2 Specifications:........................................................................................................................4
4.3 Product Package:...................................................................................................................4
4.4 Power Consumption:..............................................................................................................4
4.5 Selectable Weight Units and Piece Unit:................................................................................5
4.6 Error Messages:.....................................................................................................................5
5 DISPLAY AND KEYS........................................................................................................................6
5.1 Display ...................................................................................................................................6
5.2 Keys and Their Functions.......................................................................................................6
6 BASIC OPERATION.........................................................................................................................7
6.1 Switching the scale on / Re-zeroing ......................................................................................7
6.2 Selecting the desired unit.......................................................................................................7
6.3 Using TARE to deduct the weight of the container.................................................................7
6.4 Animal weighing hold function ...............................................................................................7
7 SERVICE MODE ACCESS................................................................................................................8
7.1 Service Mode Access.............................................................................................................8
7.2 Service Mode Exit...................................................................................................................8
7.3 Capacity Configuration ................................................................................................9
7.4 Weight Calibration ......................................................................................................12
7.5 Function Settings ........................................................................................................13
7.6 Environment Settings ...............................................................................................14
7.7 Buzzer type ..................................................................................................................16
7.8 Span calibration ..............................................................................................................17
7.9 Gravity Compensation..........................................................................................................18
8 USER FUNCTIONS.........................................................................................................................19
8.1 Auto Power off and Backlight Settings..................................................................................19
8.2 Hold Function Setting..........................................................................................................20
9 SEGMENT DISPLAY CHARACTERS.............................................................................................22
Page 1

WS1V Set Up Manual Rev. 7.8.30gll
2 BEFORE USING THE SCALE
Thank you for purchasing a PT Electronic Digital Scale. In order to use the scale
properly, please read this Set Up Manual carefully before use. If you have a
problem concerning the scale, please contact your supplier.
1. Please keep scale in a cool and dry place. Do not store at high temperatures.
2. Do not allow any liquids to come into or contact with the scale. If this happens, wipe the
scale dry with a cloth.
3. Avoid objects impacting with the scale. Do not drop loads onto the scale or subject the
weigh pan to any strong shock loads.
4. The load placed on the weigh pan must not exceed the maximum weighing capacity of the
scale.
5. If the scale is not going to be used for some time, please clean it and store it in a plastic
bag in dry conditions. A desiccant sachet may be included to prevent moisture build up.
6. Do not mix different types of dry battery or mix used dry batteries with new dry batteries.
Page 2

WS1V Set Up Manual Rev. 7.8.30gll
3 PREPARING TO USE THE SCALE
•For accurate weight readings locate the scale on a firm level surface free from vibrations.
•Avoid operating the scale in direct sunlight or drafts of any kind.
•Remove any weight that might be on the weigh pan before the scale is switched on and
avoid leaving weight on the pan for long periods of time.
•Once the scale has been switched on, it will go through a LCD display test and then re-
zero to be ready for use.
•For best accuracy switch the scale on for 15~20 minutes before use.
•Please note when symbol appears on the screen, the batteries need to be recharged.
•All goods weighed should be placed in the centre of the weigh pan for accurate weighing.
The overall dimensions of the goods being weighed should not exceed the dimension of
the weigh pan.
Page 3

WS1V Set Up Manual Rev. 7.8.30gll
4 FEATURES AND SPECIFICATIONS
4.1 Features:
● Multi-function operation: Fast weighing operation; Full range tare; Auto power-off;
Weight hold feature.
● Dual-weighing units: kilogram (kg) and pound (lb).
● User-friendly design: Auto calibration; Large LCD display; Gravity compensation; Low
battery warning indicator; Double over-load protection.
● Dual-power source: The power source can either be from AC / DC adaptor or the
internal rechargeable battery pack.
● Stainless steel weigh pan
● LED display backlight
4.2 Specifications:
Model Capacity Division Resolution Min. Cap.
WS1V-30 30kg 10g 1/3000 200g
WS1V-60 60kg 20g 1/3000 400g
WS1V-150 150kg 50g 1/3000 1kg
WS1V-300 300kg 100g 1/3000 2kg
Operating Temperature 0°C ~ 40°C (32°F ~ 104°F)
Power Source 6v DC internal rechargable battery or AC mains adaptor 1000ma
DC 9V Centre +
Weight pan Size 300 x 350 mm (< 150kg), 570 x 900mm (150kg and 300kg)
4.3 Product Package:
● Scale 1 off
● AC adapter 1 off
● User manual 1 off
● Please contact to your supplier, if any of the items described above are missing.
● A rechargeable battery pack is included in the product package and is fitted in the
scale.
4.4 Power Consumption:
The internal rechargeable battery will operate the scale for around 170 hours. This reduces to
around 88 hours when the backlight is used extensively. The scale will operate fro a further
10 hours after the low battery warning comes on. Recharge using a mains powered adaptor
with a charge voltage of 9vDC 1000ma. The DC plug is centre positive.
Page 4

WS1V Set Up Manual Rev. 7.8.30gll
4.5 Selectable Weight Units and Piece Unit:
Kilogram (kg) 1 g = 0.001 kg
Gram (g) 1 g = 1 g
Pound (lb) 1 g = 0.002204623 lb
Pound/Ounce (lb, oz) 1 g = 0.03527396 oz
Ounce (oz) 1 g = 0.03527396 oz
Grain (GN) 1 g = 15.432358 GN
(dwt) 1 g = 0.6430149 dwt
Carat (ct) 1 g = 5 ct
Piece (pcs)
4.6 Error Messages:
⇒ The EEPROM memory is not working correctly.
⇒ Zero is higher than the zero range when switching the scale on. Calibrate the scale
⇒ Zero is lower than the zero range when switching the scale on.
⇒ A/D value is unstable.
⇒ A/D value is less than -31250. Faulty circuit board, damaged loadcell
⇒ A/D IC malfunction (cannot read A/D value). The load cell may not be connected to
the scale correctly.
⇒ A/D value is higher than +31250.
⇒ The weight of the object is over the maximum capacity + 9 divisions.
⇒ After calibration the displayed resolution is greater than the internal resolution.
⇒ The gravity value is outside the range 9.772 ~ 9.829.
⇒ Error setting.
⇒ The weight value is greater than the zero range, when re-zeroing the scale.
⇒ The weight value is below the zero range, when re-zeroing the scale.
Page 5

WS1V Set Up Manual Rev. 7.8.30gll
5 DISPLAY AND KEYS
5.1 Display
TARE 1 : “Tare” indication.
ZERO 2 : “Zero” indication.
►3 : Kilogram (g), the 1
st
unit indication.
►4 : Pound (lb), the 2
nd
unit indication.
►5 : None.
►6 : Hold mode indication.
: “Low Battery” indication.
5.2 Keys and Their Functions
: The key to switch the scale off.
: ON/ZERO key. When the scale is off, press the key to switch it on. When
the scale is switched on, with the weigh pan empty, if the display is not
showing zero, press this key to zero (balance) the scale.
Zero range: ± 2% of full scale (Standard, OIML & NTEP model).
: TARE key. Press the key to deduct the weight of the container.
● The TARE key is not functional when the weight value shown on the
display is negative or over the full scale capacity.
: UNITS key. Press the key to select the desired weight units.
: HOLD key. Used to shift between normal weighing mode and Animal
weighing Mode.
Page 6
1
2
3
4
5
6
OFF
HOLD
UNITS
TARE
ON
ZERO

WS1V Set Up Manual Rev. 7.8.30gll
6 BASIC OPERATION
6.1 Switching the scale on / Re-zeroing
1. When the scale is off, press key to turn the scale on.
2. When the scale is on and without any object placed on the weigh pan, press
key to obtain a zero reading. The 2
nd
” ◄ ” indication points to the word ZERO
in the left hand side of the display.
6.2 Selecting the desired unit
1. Press the key to select kilogram (kg), pound (lb) or pcs, the ” ► ” indication
will point to the selected unit in the right hand side of the display.
2. After power off, the scale will remember the active units. When the scale is powered on
again, it displays the previous active units.
6.3 Using TARE to deduct the weight of the container
1. Place the container on the weigh pan. After the reading stabilizes, press key
to deduct the weight value of the container. The tare annunciator will display.
2. Place the object in the container, the scale will show the net weight value of the object.
3. Remove the container and weighing object, and the display shows the negative weight
value of the container. Press key to clear the weight value of the container,
and the first ” ◄ ” indication pointing to the word TARE goes off.
4. Tare continuously (Press key, when weight is added or deducted on the
weigh pan so the next amount added or removed can be weighed).
5. Tare value = The full capacity (The scale can be tared continuously to the full capacity).
6.4 Animal weighing hold function
1. When the scale is in normal weighing mode press the Press key to switch
the scale to the Animal Weighing Hold mode. The ” ► ” indication pointing to the word
HOLD will come on.
2. Press key again to return to the normal weighing mode. The ” ► ” indication
pointing to the word HOLD will come on.
The scale will automatically exit the hold function when the weight on the weigh pan is under
10e. The ” ► ” HOLD indicator will come on when the weight on the weigh pan is over 10e
and the stability conditions set in the HOLD 4 parameters are met.
Page 7
ON
ZERO
ON
ZERO
UNITS
TARE
TARE
TARE
HOLD
HOLD

WS1V Set Up Manual Rev. 7.8.30gll
7 SERVICE MODE ACCESS
7.1 Service Mode Access
Set the jumper SWA1 on the main board to the ADJ position (switch to the left) (EEPROM
UNLOCKED). Remove the battery cover and the battery, the jumper switch is mounted on the
main circuit board accessed through a cutout at the top right of the battery compartment. With
the Scale OFF press and hold the TARE key, followed by momentarily pressing the
ON /ZERO key. Release the ON /ZERO key first and then release the TARE key as soon as
the display starts. The scale will enter the service mode; the display shows .
7.2 Service Mode Exit
Set the SWA1 jumper back to the LOCK position when service configuration is completed.
The scale will automatically exit the Service Mode if the SWA1 jumper is set to its LOCK
position during calibration. It may be necessary to restart the scale.
Page 8
⇒Capacity Configuration
⇒Weight Calibration
⇒Function Settings
Press the ON/ZERO key
Press the UNITS key
Press the ON/ZERO key
Press the UNITS key
Press the UNITS key
Press the ON/ZERO key

►
Enter the maximum
capacity
Refer to “Note 2”
Weight unit or piece unit
setting
Refer to “Note 1”
WS1V Set Up Manual Rev. 7.8.30gll
7.3 Capacity Configuration
Page 9
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
.
Press the TARE key
Input the parameter “01” to
enter the capacity
configuration
Press TARE key
Press the TARE key
Press the TARE key
The display shows the maximum capacity
+ 1 division and the weight unit set last
time for 2 seconds.
NEXT
PAGE
Example:
03000 ⇒ 300.0 kg
Example:
Two weight units “kg” & “lb”, with “kg” as
the units used for weight calibration.




Refer to “Note 3”
►
WS1V Set Up Manual Rev. 7.8.30gll
Page 10
.
The display shows the max. capacity of
the scale + minimum division and the
unit weight for 2 seconds.
Press the TARE key to
complete the capacity
configuration
Input the parameter “00”
Example:
1 ⇒ Division size
1 ⇒ The number of decimal places
2 ⇒ range setting
(divided at 1/2 of the full scale)
Press the TARE key

WS1V Set Up Manual Rev. 7.8.30gll
NOTE 1 The users can set up the different weight units in various orders according to their
preference, and the amount of the chosen weight units can be up to 4.
(a) (b) (c) (d) (e)
(a) ⇒ The first weight unit (only “kg” or “g” are available to choose from). Select either 0 or 1.
(b) ⇒ The second weight unit (select one of the parameters listed below).
(c) ⇒ The third weight unit (select one of the parameters listed below).
(e) ⇒ The amount of the weight units selected (select one of parameters 1 ~ 4).
Available units:
0 ⇒ kg 2 ⇒ lb 5 ⇒ oz
1 ⇒ g 4 ⇒ lb / oz
Hint: When the first unit is set to lb, the second unit will be kg or g.
For example:
Select two weight units, kg and lb, with kg as the calibration weight unit. The Calibration
weight unit is entered first. In this example enter 02002
NOTE 2 Enter the maximum capacity of the scale, total 5 digits
(f) (g) (h) (i ) ( j)
For example:
30.000 kg ⇒ Key in 30000
300.0 kg ⇒ Key in 03000
NOTE 3 Set the division size and decimal point position to determine the display resolution
(k) ( l) (m )
(k) ⇒ Division size (select 1, 2, or 5)
(l) ⇒ The number of decimal places (0 ~ 5)
For example: 60.000 kg ⇒ enter 3
300.0 kg ⇒ enter 1
(m) ⇒ range setting (select one of parameters 0, 1, or 2)
For example: 0 &1 ⇒ full range, 2 ⇒ dual range(divided at 1/2 of the full scale)
Page 11

►
Unload the weigh pan
Press the TARE key
►
►
Place full load (300kg in this
example) on the weigh pan
then press the
TARE key
►
Remove the weight from the
weigh pan and press any key
to exit the setting.
►
WS1V Set Up Manual Rev. 7.8.30gll
7.4 Weight Calibration
Page 12
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
.
.
The scale shows the calibration weight
value.
The buzzer sounds “beep, beep, beep”
when the weight reading is stable.
.
.
Press the TARE key
The display shows the calibration weight
value and the weight unit set at the first
position.
The calibration weight value can be
changed to match the weights available
When the weight reading is stable the
display shows the calibration weight value.
The scale copies and saves the local
gravity value automatically.
When stable
Press the TARE key
Input the parameter “01”
Input the parameter “00”
Press the TARE key to
complete the
calibration

WS1V Set Up Manual Rev. 7.8.30gll
7.5 Function Settings
Page 13
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
⇒ Return to the upper menu level
⇒ Environment settings
⇒ Buzzer type
Press the TARE key
Input a parameter 00, 01, or
02.
After inputting “00”,
Press the TARE key
to return to the upper level

Use the ON/ZERO key
to input a parameter
Use the ON/ZERO key
to input a parameter
WS1V Set Up Manual Rev. 7.8.30gll
7.6 Environment Settings
Page 14
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
Press the TARE key
Returning to zero point setting
Using the ON/ZERO or UNITS keys to input a
parameter
Default setting = 0
0 ⇒ show all 5 ⇒ cover 5 d
1 ⇒ cover 1 d 6 ⇒ cover 6 d
2 ⇒ cover 2 d 7 ⇒ cover 7 d
3 ⇒ cover 3 d 8 ⇒ cover 8 d
4 ⇒ cover 4 d 9 ⇒ cover 9 d
The function is active when the weight
value is over 1/3 of full capacity
Digital switch &stable range parameter
setting
Displays the current setting
Use the ON/ZERO key
to input a parameter
Filter parameter setting
Displays the current setting
Press the TARE key
Press the TARE key
Returning to zero point setting
Displays the current setting
Filter parameter setting
Using ON/ZERO or UNITS keys to input a
parameter
Default setting = 5
Parameter 0 ~ 9,
The greater the figure, the faster the filter
will react. Consequently, the weight may be
less stable.
Digital switch &stable range parameter
setting
Using ON/ZERO or UNITS to input a parameter
Default setting = 0
Parameter 0 ~ 9 ,
The greater the figure, the more stable the
displayed weight will be
NEXT
PAGE

Use the ON/ZERO key
to input a parameter
Use the ON/ZERO key
to input a parameter
WS1V Set Up Manual Rev. 7.8.30gll
Page 15
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
Stable range parameter setting
Use ON/ZERO or UNITS to input a parameter
Default setting = 1
0 ⇒ No limitation
1 ⇒ Less than 1/4 division/sec
2 ⇒ Less than 1/2 division/sec
3 ⇒ Less than 2/3 division/sec
4 ⇒ Less than 1 division/sec
Re-zero range setting
The display shows the current setting
Use the ON/ZERO key
to input a parameter
Zero range setting
The display shows the current setting
Press the TARE key
Key in the parameter “00”
Press the TARE key
Press the TARE key
Press the TARE key
Stable range parameter setting
The display shows the current setting.
Zero range setting
Use ON/ZERO or UNITS to input a parameter
Default setting = 20
00 ⇒ No limitation
01 ⇒ ± 1%
02 ⇒ ± 2%
50 ⇒ ± 50%
Re-zero range setting
Use ON/ZERO or UNITS to input a parameter
Default setting = 02
00 ⇒ No limitation
01 ⇒ ± 1%
02 ⇒ ± 2%
15 ⇒ ± 15%
Press the TARE key
Cont.

Use the ON/ZERO key to key
in a parameter
WS1V Set Up Manual Rev. 7.8.30gll
7.7 Buzzer type
Page 16
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
Press the TARE key
Buzzer type
The display shows the current setting
Press the TARE key
Key in the parameter “00”
Press the TARE key
Buzzer type
Use ON/ZERO or UNITS key to key in the a
parameters
0 ⇒ Pulse signal (AC buzzer, PT-134OP,
4KHz)
1 ⇒ Continuous signal (DC buzzer, UIC-
4201)

►
►
Place a load on the weigh pan
according to the weight value
show on the display,
then press
the TARE key .
►
Remove the load from the
weigh pan.
►
WS1V Set Up Manual Rev. 7.8.30gll
7.8 Span calibration
● Set the jumper SWA1 on the main board to the ADJ position (EEPROM
UNLOCKED). Press the ON /ZERO key to enter the SPAN calibration mode;
the display shows .
● Set the jumper SWA1 back to the LOCK position, after completing the
calibration.
● If the jumper SWA1 is set back to the LOCK position during calibration, the
scale exits the service mode automatically.
Set the jumper SWA1 to the LOCK position.
The scale returns to the weighing mode.
Page 17
.
.
.
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
.
Press the TARE key
Detect and save zero point in EEPROM
automatically.
The calibration data is saved in the
EEPROM

Key in the local gravity
value
WS1V Set Up Manual Rev. 7.8.30gll
7.9 Gravity Compensation
Set the jumper SWA1 on the main board to the ADJ position. Press the ON /ZERO
key to switch on the scale, and press the ON /ZERO key again before the display
resets back to zero. The scale enters the gravity compensation mode.
Set the jumper SWA1 to the LOCK position
The scale returns to the weighing mode
The gravity value must lie between those at the Equator and the Polar
Regions.
Gravity value at the equator G
E
= 9.7803184558 m/sec
2
Gravity value at the polar region G
P
= 9.8321772792 m/sec
2
Auckland: 9.806m/sec
2
 The display shows error message , when the gravity value is NOT within the
range (9.829 > gravity >9.772).
Page 18
.
.
ON/ZERO ⇒Increment digit (from 0 to 9)
TARE ⇒Confirm / enter key
HOLD ⇒Move the cursor to the right
.
Press the TARE key
The display shows and saves
the entered gravity value in
the EEPROM.
The display shows the current
compensation value