User Manual
Weighing Indicator
BTW-E
© EXCELL PRECISION CO., LTD. 2015. All rights reserved worldwide.
The information contained herein is the property of EXCELL PRECISION CO., LTD. and is
supplied without liability for errors or omissions. No part may be reproduced or used except
as authorized by contract or other written permission. The copyright and the foregoing
restriction on reproduction and use extend to all media in which the information may be
embodied.
EXCELL PRECISION CO., LTD
Table of Contents
INSTRUCTIONS FOR USE .................................................................................................2
PREPARING TO USE THE SCALE .....................................................................................2
CHAPTER 1 INTRODUCTION ............................................................................................4
1-1 FEATURES ....................................................................................................................4
1-2 SPECIFICATIONS ...........................................................................................................4
1-3 DISPLAY .......................................................................................................................4
1-4 KEYPAD FUNCTIONS DESCRIPTION .................................................................................5
1-5 POWER SUPPLY ............................................................................................................5
1-6 ERROR MASSAGE .........................................................................................................5
CHAPTER 2 OPERATING INTRODUCTION ......................................................................6
2-1 KEYPAD OPERATING......................................................................................................6
2-2 SELF TEST MODE .........................................................................................................7
2-3 GENERAL FUNCTION OPERATING ...................................................................................8
2-3-1 Simple Counting Function ...................................................................................9
2-3-2 Check Weighing Function ..................................................................................10
2-3-3 Accumulation Function....................................................................................... 11
2-3-4 Hold Function.....................................................................................................12
2-4 FURTHER FUNCTION OPERATING..................................................................................13
2-4-1 General Setting .................................................................................................13
2-4-2 Check Voltage ...................................................................................................13
2-4-3 External Weight Calibration ...............................................................................14
2-4-4 Transmission Setting .........................................................................................15
APPENDIX 1 7-SEGMENT DISPLAY CHARACTERS ......................................................17
APPENDIX 2 INSTALLATION............................................................................................18
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Thank for your purchasing of our Weighing Scale. To
guide you to use our product correctly, please read
this User Manual carefully to extend the life of
machine and to avoid error.
Instructions for Use
1. Please keep scale in a cool and dry place. Do not store under high temperatures.
2. Please keep the scale clean and free from insect infestation.
3. Avoid impacting with other items or overloaded with excessively heavy weights.
(The load must not exceed the maximum capacity of the scale).
4. If the scale is not going to be used for some time, please clean it and store it in a plastic
bag in dry condition. A desiccant sachet may be included to prevent moisture from
building up.
5. Please operate or charge the scale in an open area. Do not squeeze the power cord to
avoid wire on fire.
6. Any suggestion is warmly welcome.
Preparing to Use the Scale
1. Locate the scale on a firm level surface free from vibrations for accurate weight readings.
Adjust the four leveling feet to centre the leveling bubble on the scale.
2. Avoid hot sunshine directly on the scale or near the exhaust port of ventilating system.
3. Please use a separate power source plug, to avoid the disturbance of other electric
appliance.
4. There should be no weight on the scale when power is turned on.
5. Commodity should be placed at the centre of platter when being weighed, and its size
should not exceed the dimension of the platter.
6. We suggest to warm the scale for 15 ~ 20 minutes before using.。
7. Please note that when
symbol shows up on the display, which means the indicator
needs to be charged. The indicator could only operate for another 6~8 hours. Then
“ .
. ” will show on the display and the indicator must be fully charged before
operating again.
8. Introduction of Storage Battery
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Due to the storage battery adopt the advanced free-maintaining technique, customers need
not to replenish electrolyte.
The scale should be recharged every 3 months to prevent failure of the internal
rechargeable battery.
1. The battery should be charged for 8~10 hours.
2. The temperature of battery should below 45℃.
Maintaining
1. Please do not discharge with over-current when using the battery. Please charge the
battery after discharging current.
2. Please take down the battery when the scale is not used for a long time or break the
connection of cathode.
3. Do not short the battery terminals to check whether there is current. Please check
whether the connection point is firm to guarantee good connection.
4. The battery should be replaced by specialized person. No reverse-battery or the
product will be damaged.
a) Anode of battery should be connected with Anode of product battery(usually red
cable)
b) Cathode of battery should be connected with Cathode of product battery (usually
brown cable or black cable)
c) See the picture following
Brown cable(or black cable)
connected with Cathode of
battery
Red cable connected with
Anode of battery
Safety warnings
1. The electrolyte of battery is caustic which causes metal, cotton, etc to corrode.
2. The hydrogen will be resolved when using or charging the battery and it will cause
explosion when approaches fire.
No burning
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Caution Corrosion
Warning explosion
3
Children faraway
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Chapter 1 Introduction
1-1 Features
z
z
z
z
z
z
z
z
z
z
z
The interface is simple and easy to operate
Up to 1/15,000 display resolution
High Speed 24bits AD
AC / DC switching function (Built-in rechargeable battery)
Low power indication
Full range tare; Auto zero tracking
Simple counting; Gross/Net indication; Hold function
Check mode Lo / Hi / OK with 3 selectable beeping sounds
Lo / Hi / OK indication shows on LED lights
Selectable unit: Kilogram (kg) and pound (lb)
Easily viewing single weight / total weight within 1 button press
Option:
z RS232: Bi-direction transmission, easy data reading or printing
z Sleeve connecting stand
1-2 Specifications
z Display LED 6 digits
z Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)
1-3 Display
STABLE
HI
OK
LO
´0³
NET
M+
kg / lb
Description
NET
:
:
:
When this LED is on, the indicator is charging.
“Low battery power” indication
Put container on the platter, after stable, press tare key and the “NET” indication on.
M+
:
“M+” indication
kg/lb
HI
: “Unit” indication. LED off displays “kg” unit whereas LED on displays “lb” unit.
: The weight is higher than setting value, “HI “LED on
OK
:
When the weight is between HI limit values and LO limits value, “OK “LED on
LO
:
The weight is lower than setting value, “LO “LED on
.
“Stable” indication (eg: “ .
”)
STABLE :
´0³ :
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“Zero” indication (eg: “
.
”)
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1-4 Keypad Functions Description
key
Function
Hold the key for 1 sec.
Zero key
Check Voltage
Tare/Pre-tare key
c LED light setting
d Zero display setting
e Local G value setting
Hold the key for 3 sec.
Enter password to enter
external weight calibration
Unit key
Function key
Print / transmit key
RS-232 transmission setting
1-5 Power Supply
Power Selection
6V 4Ah rechargeable battery
110V/220V AC/DC Adaptor
LED charging icon
When “ . . ” shown on the display, the indicator must be charged. When the charging
icon becomes red, it means the indicator is charging; when the charging icon becomes
green, it means the indicator is fully charged.
The indicator needs to be charged for about 8~9 hours when“ . . ” shown on the
display.
1-6 Error Massage
⇒ The EEPROM is not working correctly.
(The EEPROM is not set yet, or the circuit on PCB is broken.)
⇒ Zero is higher than the zero range when switching the indicator on.
⇒ Zero is lower than the zero range when switching the indicator on.
⇒ A/D value is unstable
⇒ ADIC value is over the maximum range. (2097151 ~ -2097152)
⇒ The weight of the object is over 9 divisions of the maximum capacity.
⇒ The weight of the object is under -1/6 maximum capacity.
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Chapter 2 Operating Introduction
2-1 Keypad Operating
: Zero key
If the weighing value is within the range of zero balance, it can be re-zeroed and tare
cancelled.
: Tare key
It can be tare except when the weight is negative and the maximum capacity.
Tare Function
key for
n Place the container onto the scale, until the weight value is stable, press
zero return and the NET indication is shown on the display.
o Place the object into the container and the display shows the net weight value of the
object.
p Remove both object and container, and negative value of the container will show on the
display. Press
again to clear “tare value”. The scale returns to zero and NET
indication goes off.
Tare can be continuously done until tare value=maximum capacity
Continuous Tare ⇒ Press
key for continuous weight increase/decrease on platter.
If there is Tare, the pre-tare cannot be done. If there is pre-tare first, and the tare weight
Is more than pre-tare weight, Tare can be done.
No Tare can be done under gross weight display mode.
Pre-Tare Function
When there is nothing on the platter, press
key and use keypad to input pre-tare weight.
When the cursor flashes on the last digit of display, press
key again to complete.
Method of clearing Pre-tare value: the same as the method of clearing tare value.
Pre-tare mode, keypad function as followed:
⇒ upward key
⇒ move cursor leftward
⇒ downward key
⇒ move cursor rightward
: Function key
n In weighing mode, use this key to shift among simple counting function, check weighing
function, accumulation function and hold function.
o In tare mode, use this key to shift between the “Net value” and the “Gross value”.
Shift between Net value and Gross value
In the Tare mode while the “Net” indication shows up, press F key to switch display
between gross and net weight. "Net" indication shows up to display net weight whereas
"Net" indication goes off to display gross weight.
When the screen displays the “gross weight”, only F key can response.
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:Unit key
Use
key to select a unit as the display indicated.
The selected unit will be memorized when you turn the indicator off. And the memorized
unit will appear after you turn on the indicator next time.
:Print key
In accumulation mode, if the parameter set as
or
transmission, it
transmits the format of simple mode or complete mode.
This key is the combination key. while total counts is shown and weight returns to net zero,
press
key to clear data and RS-232 transmits the MC printing format.
If there is new weight added on platter, a new data will be added to accumulation data. If
this weight is not taken off, nothing can be added to accumulation data. Display will
show the total counts for one second, then show net weight for one second, then the
display returns to the current weight.
Clear Accumulation data: Press
key and the total counts shows on the display. Press
key again to clear accumulation data.
Weight must return to net zero if to perform clear function
2-2 Self Test Mode
Press
key and not release. Then power on the indicator, Wait till display shows
to enter “Self-Test Mode”.
Press
Press
key
Press
key
Press
key
Press
key
Press
key
Press
key
Press
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key
key
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INTERNAL VALUE MODE (must hook up full-bridge Load Cell to test)
c Press
to enter, and the display shows internal value
d Please check the internal value is within normal range(0~400000 no load)。
e Check whether the backlight is on
f Press
key to back to the last screen, the display shows
KEYPAD TEST MODE
c Press
to enter, display shows
d Keypad’s internal code:
e Press
key = 01、
key =31、
key=20、
key=30
key to back to the last screen, the display shows
FIRMWARE VERSION DISPLAY MODE
c Press
to enter, display shows the firmware version
d Press
key again, the display shows maintenance number
e Press
key to back to the last screen, display shows
for 2 seconds
BACK TO THE LAST SCREEN
Press
key to exit self-test mode, the scale will re-power on automatically
2-3 General Function Operating
Power on the indicator and enter into the setting that you set before or weighing mode.
Then press
to shift functions
.
Press
Weighing Mode
key
Simple Counting Function
Press
key
Check Weighing Function
Press
key
Accumulation Function
Press
key
Hold Function
Press
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key
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2-3-1 Simple Counting Function
1. In weighing mode, press
key to enter into simple counting function.
2. Press
key to select sample quantity (10, 20, 50, 100, 200)
LCD shows as right picture:
Press
key
.
Press
key
.
Press
key
3. Select sample quantity and then place samples on the platter. After
stable, press
key and display shows ------. After stable, the scale
enters into counting mode and the display shows “P” and quantities.
Place samples
on the platter
.
Press
After stable, stable
indication (S10) shows on
key
Enter into counting
function
Press
key
.
Display total weight
After 1 second
.
Display Unit weight
Return to counting
mode after 1 second
4. Press
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key to enter into next function.
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2-3-2 Check Weighing Function
1. In weighing mode, press
key twice to enter into check weighing function.
2. Press
key to enter into beeper setting.
LCD shows as right picture:
3. Press
key to select beep sound.
Press
key
⇒No beep
⇒OK (when the weight is
Beeper setting
between Low limit & High
limit.), the beeper beeps.
Press
key
⇒When the weight is under
or equal to Low limit & over
or equal to High limit, the
Press
key
beeper beeps.
Press
key
4. Press
key to enter into Hi limit value setting
5.
key⇒move cursor to right
(When the cursor arrive to the last
Digit, it returns to the first digit.)
Press
key⇒increase/decrease number
key⇒confirm and enter into Lo
limit value setting
6. In Lo limit value setting
key⇒confirm and return to
Beeper setting
key
.
Press
.
Hi limit value setting
key
.
kg
Lo limit value setting
Press
key to
confirm and return
to Beeper setting
7. In beeper setting, press
key to enter
into check weighing function. When
Press
key
the weight is more than 10d, check weighCheck weighing
ing function activates.
.
function
8. Press
key to exit the setting and
Shift “Hi,OK,LO “ LED light
enter into next function.
Put weight (>10d) according Hi-Lo limit value
Repeat above steps to set this function again.
setting
Units can not be shift in check weighing
.
function. Please enter into weighing mode
● OK
to shift units
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2-3-3 Accumulation Function
1. In weighing mode, press
key three times to enter into accumulation function.
LCD shows as following picture:
Press
key to shift
Press
key
Press
key
.
Accumulation
function
.
Put weight
On platter
Put weight
On platter
.
.
Press
Accumulate
automatically
key
Accumulation
counts
Accumulation
counts
After 0.5 second
After 0.5 second
Return to
accumulation
function after
0.5 second
Accumulation
function
.
Accumulation
weight
.
Accumulation
weight
Return to
accumulation
function after
0.5 second
⇒Manual accumulation: After the weight is stable, press
key to accumulate
and “M+” indication shows up. It does the second accumulation, after the weight
returns to zero.
⇒Automatic accumulation: After the weight is stable, it accumulates automatically,
and “M+” indication shows up. It does the second accumulation, after the weight
returns to zero.
If it set as
,
or
transmission mode, RS-232 outputs printing
format while accumulating.
The Minimum weight of accumulation: > 10d
If the weight is unstable while accumulating,
In accumulation
display shows
.
function, there is
.
accumulation
2. Press
key to see accumulation counts
data.
Press
key
and accumulation weight.
Accumulation
counts
after 0.5 second
Return to accumulation
function after 0.5 second
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.
Accumulation
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3. Clear accumulation data:
When there is no weight on the platter (“´o³” indication
shows up), press
key to display accumulation counts.
Press
Then press
key again to clear the data.
“M+” indication goes off.
If it set as
or
transmission mode,
RS-232 outputs MC printing format after data clear.
Press
key for 2 seconds and the beeper beeps Press
3 times. The accumulation data is cleared and RS-232
does not output MC printing format. “M+” indication goes
off.
4. Press
key to exit the setting and enter into next function.
The original accumulation data still exist.
No weight on
the platter
.
key
Accumulation
counts
key
Clear accumulation
data
2-3-4 Hold Function
1. In weighing mode, press
key four times to enter into hold function.
2. Use
key to select
,
or
Then press
key to enter into Hold function.
When the weight is fixed, the beeper beeps.
Press
key
⇒The weight is unlocked only after taking off
the weight and the weight returns to zero.
⇒The weight is unlocked, when increase or
decrease the weight that is beyond the
Press
key
tolerance d.
⇒ Calculate the average weight and fixed the
display. To unlock it, press
key to re-read
the weight.
Press
Press
key
.
Press
key
Press
key
Press
key
key
Press
key
Press
key
d value: 2~50d
defaults: 5d
Weighing
mode
:Move to right
:adjust
number
.
:save
calculate
average weight
Press
key to enter
into weighing
mode
Press
key
.
3. Press
key to exit the setting
and enter into next function.
Repeat above steps to set this function again.
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2-4 Further Function Operating
2-4-1 General Setting
For entering values:
.
Press
key for 1 sec.
Zero display setting
LED light setting
Press
key
Press
Local G value setting
key
Press
Normal
Press
key
⇒ Upward key (0~9 digit entry)
⇒ Downward key (0~9 digit entry)
⇒ Move cursor rightward
⇒ Move cursor leftward
Press
key to save. Press
key to exit without saving and return
to upper level or weighing mode.
Press
key
Power saving setting
key
Press
Use
or
to enter parameter
keys in order
Press
key
Use
or
to enter parameter
.
Low
Press
key
Press
Enter local G
value
key
Press
key
.
High
After selection
Press
Press
key
key
Fail
Restart automatically
Please restart the indicator, after setting LED light.
Zero display setting: 0~9, when the weight is within +/- of the set values, it display as zero.
Local G value conditions: The new Local G values must be within ±10% of the Local G
value set in the factory.
If the external weight calibration has been used, the Local G value is disable.
In power saving setting, when the weight is within 10d or negative weight and not
pressing any key, it enter into power saving mode after time is set (1~9 min).
2-4-2 Check Voltage
In weighing mode and the weight returns to zero,
Press
key for 1 second to check voltage.
It returns to weighing mode after 3 second.
.
Returns to
weighing
mode after
3 second
Press
key
for 1 second
.
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2-4-3 External Weight Calibration
In weighing mode and the weight returns to zero, Press
key for 3 second to enter into
password display. Press
keys in order and enter into External Weight
Calibration. Otherwise it will returns to weighing mode.
.
Press
key
for 3 seconds
Press
keys in order
The display shows the
calibration value and unit.
The right digit keeps
flashing.
.
Press
key to
move the cursor to
the left.
.
Press
key while
there is no load on
platter.
Press
key to
abort zero calibration
The scale is managing
the data of zero point
When it becomes stable,
the display shows the
calibration weight.
2 seconds later
.
Put the weight on the
platter and press
key.
The scale is managing
the data of full capacity.
When it becomes stable,
the beeper beeps 3 times.
key
While no load, press
and then press
key to
abort full capacity calibration
2 seconds later
Weight calibration
finished and then
take off the weight
key return
Press
to the weighing mode
After aborting zero calibration, please put full
weight on the platter and wait till the scale
stable. Then it will calibrate automatically.
.
Weight calibration conditions:
The calibration weight value placed on the platter must be over 100e, and the standard
deviation of the weight must be within ±10%.
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2-4-4 Transmission Setting
1. In weighing mode, press
2. Press
key for 1 second to enter into transmission setting.
key to select transmission
⇒No transmission
⇒Stable transmission
⇒Continuous transmission Press
⇒Press
key to transmit
.
for 1 sec
Weighing mode
Press
key
(Simple mode)
⇒Press
key to transmit
(Complete mode)
⇒ Stable transmission
Press
key
Press
key
Press
key
Press
key
The format is as same
as
3. Press
key to set baud rate
(1200, 2400, 4800, 9600 or
19200.)
Press
Press
key
4. Press
key to save the setting and
return to weighing mode
Press
Baud rate setting
key
.
RS-232 Output Format
The output format of
GROSS
Net
Plus OL
Minus OL
Unstable
S
S
O
O
U
T
T
L
L
S
,
,
,
,
,
G
N
G
G
G
S
T
S
S
S
key
Save the setting and
return to weighing mode
and
,
,
,
,
,
+
+
+
+
1
1
SP
SP
1
2
2
SP
SP
2
3
4
5
6
7 SP
3
4
5
6
7 SP
SP SP SP SP SP SP
SP SP SP SP SP SP
3
4
.
5
6 SP
SP o
z
SP k
g
SP SP SP CR LF
SP SP SP
SP l
b
⇒Stable transmission:when the weight is more than 10d and the weight is stable,
it transmit above format. It transmits next data format only when take off the
weight on the platter and put it on again.
⇒Continuous transmission:It always transmit above format.
Output rate: 4counts / second
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Steps:
Steps:
Steps:
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⇒Press
key to transmit (simple mode):use in accumulation mode.
. Press
key to enter into weighing
1. Press F key and select
mode.
2. Select
and necessary baud rate.
3. Put the objects on the platter. After the weight stable, press
key to
accumulate the data and print out the order and the net value of the data as
following example.
4. Repeat above step to accumulate and print continuously.
5. Press
key twice to print TOTAL as following example and clear the data.
S/N
WT
--------------------------------------0001
2.500
( Press
key
0002
2.500
( Press
key
0003
2.500
( Press
key
--------------------------------------0003
7.500
( Press
key twice to print TOTAL
⇒Press
key to transmit (complete mode):use in accumulation mode.
. Press
key to enter into weighing
1. Press F key and select
mode.
2. Select
and necessary baud rate.
3. Put the objects on the platter. After the weight stable, press
key to
accumulate the data and print out the data as following example.
TICKET NO. 0001
GS
2.500kg
TR
0.000kg
NT
2.500kg
( Press
key
4. Repeat above step to accumulate and record.
5. Press
key twice to print TOTAL as following example and clear the data.
TOTAL NUMBER
OF TICKETS 0003
TOTAL WEIGHT
2.500kg
( Press
key twice to print TOTAL
⇒Stable transmission (the format is as same as
) in accumulation
mode.
. Press
key to enter into weighing
1. Press F key and select
mode.
2. Select
and necessary baud rate.
3. Put the objects on the platter. After the weight stable, it automatically
accumulates the data and print out the order and the net value of the data as
following example.
4. Repeat above step to record and print continuously.
5. Press
key twice to print TOTAL as following example and clear the data.
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Appendix 1 7-Segment Display Characters
Number
Display
Letter
Display
Letter
0
A
N
1
B
O
2
C
P
3
D
Q
4
E
R
5
F
S
6
G
T
7
H
U
8
I
V
9
J
W
K
X
L
Y
M
Z
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Display
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Appendix 2 Installation
1. Please connect the Load Cell and Indicator as following
5PIN Connector
PIN 1 E+
PIN 2 E3 4
PIN 3 S+
2 5
1
PIN 4 SPIN 5 GND
2. Connecting way of a 9 pin RS-232 connector as following.
PIN 2:Data inputting (TXD), position 2 in following picture
PIN 3:Data outputting (TXD), position 3 in following picture
PIN 5:Internal grounded (GND), position 5 in following picture
2
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3
5
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