Drawell TD Series User manual

User Manual
Please read the manual before installation and operation.
Drawell International Technology Limited
Chongqing Drawell Instrument CO,.Ltd
Add:Suite 2705,Building No.12,Shiyou Road No.1,Yuzhong District, Chongqing,China
Tel: [phone]
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1117,Lane561XiuChuan Rd.,PuDong New Area,Shanghai,China
Web : www.drawell.com.cn
Email : [email protected]

INSTRUCTION MANUAL
FOR TD/TDD SERIES PRECISION BALANCE

T-D/ TD-D series precision balance work on high precision strain gauge
load cell and micro processor which implements high speed stabilization
and high reliability.
Specifications,
Model No. (TD)
T1003D
T2003D
T3003D
Max. Capacity (g)
0-100
0-200
0-300
Tare Range (g)
100
200
300
Readability (g)
0.001
0.001
0.001
Repeatability (g)
+/-0.002
+/-0.002
+/-0.002
Non-Linearity (g)
+/-0.002
+/-0.002
+/-0.002
Corner Error (g)
+/-0.002
+/-0.002
+/-0.002
Pan Size (mm)
∮90mm
Dimensions (LxWxH)
295x192x280mm
Power supply
AC 110V/220V/ DC 9V
Operating Temperature Range: 5-35 DegreeCentigrade
Moisture: 50-85%
Model No. (TD-D)
TD30002D
TD50002D
3003
Max. Capacity (g)
0-3000
0-5000
0-300
Tare Range (g)
3000
5000
300
Readability (g)
0.01
0.01
0.001
Repeatability (g)
+/-0.05
+/-0.05
+/-0.002
Non-Linearity (g)
+/-0.05
+/-0.05
+/-0.002
Corner Error (g)
+/-0.05
+/-0.05
+/-0.002
Pan Size (mm)
170mmX170mm
Dimensions (LxWxH)
290x185x80mm
Power supply
AC 110V/220V/ DC 9V

Features,

High Precision loadcell

Aluminum Alloy die cast base and mains
 Stainless Steel Platter
 Super Bright LED/LCD display with backlight

Glass windshield supplied as standard

Height adjustable feet
 RS232 Interface supplied as standard
 Full Capacity subtraction
 Below Balance hanger supplied as standard
 Stabilization time 1-1.5 seconds typically

Overload Protection

Selectable measure units, g, ct,oz, lb, ozt
 Checking Weighing, Piece counting function
Function Keys
ON/OFF, to turn on / off the balance
PCS, for counting
TARE, to tare
UNIT, for unit conversion (g/ct/oz/lb/ozt)
CAL, for calibration
MENU, for print
ASSEMBLING
 Unpack the package, put the platter on the top of the loader.
 Put the balance on a steady flat surface away from vibration, direct
sunshine ,air blow or strong magnetic disturbance..
TURN ON THE BALANCE
Connect the balance to power supply, keep the switch in the ON(-) position.
Press key ON/OFF to turn on the balance, the balance will in turns display
following figures,
8.8.8.8.8.8.
Maximum capacity
------------
Finally the balance stays in a standby state of showing 0.000g in the display
Notice: the lasting time of --------- will be decided by the stability of the loadcell,
thus, the balance must not be located in an unstable surface or in the wind
blow. When the indicator Oflashes in the display, it means the environment is
not good for the following operations.

CALIBRATION
 The purpose for this operation is to calibrate the balance so as to achieve
the best performance in case there is obvious tolerance error in weighing
or the balance is located in different gravity due to different latitude.
 it is suggested to warm up the balance over half an hour before calibration.
 Remove all loads from the platter, press key TARE to clear the readings to
0.000g.
 Press and hold key CAL for 3 seconds, release the key CAL when “---
CAL---“ is shown in the display, a figure of standard weight will flash in the
display, put a standard weight on the platter accordingly, standby state “---
---“ will be shown in the display for a few seconds before the standard
weight figure is shown in the display, remove the weight, “------“ standby
state will remain for a few seconds before the balance enter stable
weighing mode, showing 0.000g.
 It is recommended to make the operations twice to achieve the best
calibration result.
 Linearity Calibration, Press and hold key CAL for 3 seconds, release the
key CAL when “---CAL---“ is shown in the display, after a short presence of
“- - - - “, a standard weight figure will flash in the display, press and hold
key PCS to enter linearity calibration mode, follow the instructions to
proceed linearity calibration.
WEIGHING
When the balance is warmed up and calibrated, 0.000g is shown in the display
indicating weighing mode, put the object on the platter, when stable, the weight
of the object is shown in the display.
Note, symbol Ois stable indictor, when it stops flash, the balance is stable
TARING
When a loader is put over the platter, its weight is shown in the display, press
key TARE, 0.000g will be shown in the display, indicating the weight of the
loader is deducted, put the object into the loader, when stable, the figure
shown in the display is the weight of the object.
PIECE COUNTING
Remove all loads from the platter, press key TARE to clear the readings in the
display, press key PCS to enter counting mode, “- -COU- -“ “- - - -“ and figure
10(default sampling quantity) will in turns be shown in the display, keep
pressing key PCS to select sampling quantity from 10,25,50,100 up to
500,release key PCS when the desired quantity flashes in the display, put a
sample on the platter accordingly, press key PCS again to save setting, the
counting mode setting is finished, in counting mode, weighing unit will change

from g to PCS.
Notice: In counting mode, the weight of the sampling objects should be even,
the weight of the individual sample should not be less than the division of the
balance.
Return to Weighing Mode: Press key PCS to return to Weighing mode.
WEIGHING UNIT CONVERSION
Press key UNIT to select desired weighing unit from g, ct, oz,lb,ozt
The default weighing unit of the balance is g.
DATA OUTPUT
Press key PRINT to transfer data to computer, printer or custom display
OVERLOAD
The weight of the objective cannot exceed the rated maximum capacity of the
balance, when exceeding, “-------“ will be shown in the display, remove the
objective immediately from the platter so as to prevent damages to the
balance.
INTERFACE
RS232 Connection
Balance (9 pins) Printer/ PC (9 pins)
RXD(Input) 2 ------------3
TXD (Output) 3----------------------------------- 2
GND (Ground) 5------------------------------------ 5
Boardrate
Default Boardrate, 2400BPS, options 1200, 2400, 4800, 9600,19200, 115200
Boardrate setting,
Press and hold key PRT to show C3-02, indicating boardrate 2400 BPS, keep
When C3-01 shows, indicating 1200BPS
When C3-03 shows, indicating 4800BPS
When C3-04 shows, indicating 9600BPS
When C3-05 shows, indicating 19200BPS
When C3-06 shows, indicating 115200BPS
Release key PRT when the desired boardrate shows, press key CAL thrice to
confirm set.
Data format, 10 bits, 0 as start bit, 1 as stop bit, 8 digits (ASCII code)
Rity bit, No.
Output Data Format
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Type
Space
Space or *
+ /-
data
data
data
data or dot
data or dot
data
data
data
unit
unit
End
Return

TIPS
 Warming up is necessary before any operation is made to the balance.
 In TARE mode, the value of the taring object cannot exceed the rated
maximum capacity of the balance
 Calibration is necessary to ensure a reliable weighing.
 Switch off the balance when it is not used.
 It is suggested to turn the round platter clockwisely before take it off the balance
Maintenance ----- Trouble shooting and solutions
Phenomenon
Possible Reason
Solution
Upper Line - - - -
Over Load
Re-calibrate the Balance
Under Line_ _ _ _
Overload or loadcell broken
Re-calibrate the Balance
Err-1
Too frequently turn on and off
the balance
Turn off the balance, resume it after 3
seconds
Err-2
The balance is not stablised
Wait for a few seconds for stabilization
Low Battery
Charge or Replace Battery

Drawell International Technology Limited
Chongqing Drawell Instrument CO,.Ltd
Add:Suite 2705,Building No.12,Shiyou Road No.1,Yuzhong District, Chongqing,China
Tel: [phone]
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1117,Lane561XiuChuan Rd.,PuDong New Area,Shanghai,China
Web : www.drawell.com.cn
Email : [email protected]