A&D Weighing GX-203A, GX-303A, GX-403A, GX-603A, GX-1003A Instruction Manual
...
GX-A SERIES
GF-A SERIES
ulti-Function Balance
M
INSTRUCTION MANUAL
ＧＸ－Ａ series
GX-203A/GX-303A/GX-403A/GX-603A/GX-1003A/GX-1603A
GX-2002A/GX-3002A/GX-4002A/GX-6002A/GX-10002A
GX-6001A/GX-10001A
ＧＦ－Ａ series
GF-203A/GF-303A/GF-403A/GF-603A/GF-1003A/GF-1603A
GF-2002A/GF-3002A/GF-4002A/GF-6002A/GF-10002A
GF-6001A/GF-10001A
1WMPD4003475
© 2017 A&D Company Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated
into any language in any form by any means without the written permission of A&D
Company Ltd.
The contents of this manual and the specifications of the instrument covered by this
manual are subject to change for improvement without notice.
Windows, Word and Excel are registered trademarks of the Microsoft Corporation.
Contents
1. Introduction ........................................................................................................................ 4
1-1 Features ....................................................................................................................................................... 4
1-2 About The Models ........................................................................................................................................ 5
1-3 Compliance .................................................................................................................................................. 5
2. Unpacking The Balance ..................................................................................................... 7
2-1 Installing The Balance .................................................................................................................................. 9
2-2 Precautions .................................................................................................................................................. 9
2-3 During Use ................................................................................................................................................. 10
2-4 After Use ..................................................................................................................................................... 11
2-5 Power Supply ............................................................................................................................................. 11
3. Display Symbols And Key Operation................................................................................ 12
4. Weighing Units ................................................................................................................. 14
4-1 Units ........................................................................................................................................................... 14
4-2 Storing Units ............................................................................................................................................... 17
5. Weighing .......................................................................................................................... 19
5-1 Basic Operation .......................................................................................................................................... 19
5-2 Counting Mode（PCS） ............................................................................................................................ 21
5-3 Percent Mode (％) ...................................................................................................................................... 23
5-4 Animal Weighing Mode（Hold Function） ................................................................................................. 24
6. Impact Detection Function ............................................................................................... 25
7. Response Adjustment / Self Check Function ................................................................... 26
7-1 Response Adjustment ................................................................................................................................ 26
7-2 Self-Check-Function / Automatic Setting Of Minimum Weight Value ..................................................... 27
8. Calibration ........................................................................................................................ 28
8-1 Automatic Self Calibration For The GX-A Series ......................................................................................... 29
8-2 One-Touch Calibration For The GX-A Series ............................................................................................. 30
8-3 Calibration Using An External Weight ........................................................................................................ 31
8-4 Calibration Test Using An External Weight ................................................................................................ 32
8-5 Correcting The Internal Mass Value Of The GX-A series .......................................................................... 33
8-6 Correcting The Internal Mass Value Of The GX-A series (Auto) .................................................................... 34
8-7 Correcting The Internal Mass Value Of The GX-A series (Manual) ....................................................................... 35
9. Function Switch And Initialization ..................................................................................... 36
9-1 Permit Or Inhibit ......................................................................................................................................... 36
1
9-2 Initializing The Balance .............................................................................................................................. 38
10. Function Table ................................................................................................................ 39
10-1 Setting The Function Table ...................................................................................................................... 39
10-2 Details Of The Function Table.................................................................................................................. 41
10-3 Description Of The Class "Environment, Display" ................................................................................... 48
10-4 Clock And Calendar Function .................................................................................................................. 50
10-5 Comparator Function ............................................................................................................................... 52
11. ID Number And GLP Report............................................................................................ 55
11-1 Setting The ID Number ............................................................................................................................ 55
11-2 GLP Report .............................................................................................................................................. 57
12. Data Memory .................................................................................................................. 60
12-1 Data Memory For Weighing Data ............................................................................................................ 60
12-2 Data Memory For Calibration And Calibration Test ................................................................................. 62
13. Statistical Calculation Mode ............................................................................................ 65
13-1 How To Use The Statistic Calculation ...................................................................................................... 65
13-2 Statistical Calculation Mode (Example Of Use) ....................................................................................... 70
14. Flow Measurement ......................................................................................................... 7 2
14-1 How To Use Flow Measurement .............................................................................................................. 73
14-2 Flow Measurement Setting ...................................................................................................................... 75
15. Gross Net Tare Function ................................................................................................. 77
15-1 Preparation Of Gross Net Tare Function ................................................................................................. 77
15-2 Example Of Using The Gross Net Tare Function .................................................................................... 78
16. Minimum Weighing Warning Function ............................................................................ 79
17. Underhook ...................................................................................................................... 81
18. Programmable-Unit ........................................................................................................ 8 2
19. Density Measurement ..................................................................................................... 83
20. Password Lock Function ................................................................................................. 88
20-1 Using Password Function ........................................................................................................................ 88
20-2 Changing Password ................................................................................................................................. 89
20-3 Inputting Password When Turning On The Balance ................................................................................ 91
20-4 Missing Password .................................................................................................................................... 91
21. Maintenance ................................................................................................................... 92
2
21-1 Treatment Of The Balance ....................................................................................................................... 92
22. Troubleshooting.............................................................................................................. 92
22-1 Checking The Balance Performance And Environment ........................................................................... 92
22-2 Error Codes .............................................................................................................................................. 94
22-3 Other Display ........................................................................................................................................... 97
22-4 Asking For Repair ..................................................................................................................................... 97
23. Specififations .................................................................................................................. 98
23-1 GX-A series 0.001g models ................................................................................................................... 98
23-2 GX-A series 0.01g models ..................................................................................................................... 99
23-3 GX-A series 0.1g models ..................................................................................................................... 100
23-4 GF-A series 0.001g models ................................................................................................................. 101
23-5 GF-A series 0.01g models...................................................................................................................... 102
23-6 GF-A series 0.1g models ..................................................................................................................... 103
24. External Dimention ....................................................................................................... 104
24-1 Options And Perpheral Instruments ....................................................................................................... 106
3
1. Introduction
This manual describes how the GX-A/GF-A series balance works and how to get the most out of it in
terms of performance. Read this manual thoroughly before using the balance and keep it at hand for
future reference.
This manual consists of the following five parts:
Basic operation ................................. Describes precautions on handling the balance, balance
construction and basic balance operation.
Adapting to the environment ·········· Describes response adjustment, calibration and calibration test.
Functions ........................................... Describes various functions of the balance.
Interface ···································· Describes the interface which transmits data and controls the
balance. To use it, need a personal computer or an optional
printer.
Maintenance ..................................... Describes maintenance, error codes, troubleshooting,
specifications and options.
1-1 Features
□ The balance has a self-check function that inspects the balance itself using electronically controlled
load (ECL) and evaluates performance. Read this manual thoroughly before using the balance and
keep it at hand for future reference.
□ The balance can detect impact applied to its mass sensor and display the level of that impact. ISD
(Impact Shock Detection).
□ Continuous change of the balance can be calculated as flow rate, displayed and output. FRD :( Flow
Rate Display).
□ The balance is equipped with a data memory function, which can record weighing value, calibration
result, and multiple unit mass (mass per sample in counting mode) (Up to 200 items are stored for
weighing value).
□ The GX-A series has automatic self calibration using the internal mass, adapting to temperature
changes, setting time and interval time.
□ Good laboratory practice (GLP) / Good manufacturing practice (GMP) data can be output using the
RS-232C serial interface.
□ A built-in clock and calendar that can add the time and date to the output data.
□ Comparator Indicators, displaying the comparison results with HI OK LO .(Depending on the
setting, 5-step comparison is also possble.)
□ Capacity Indicator, displaying the weight value in percentage relative to the weighing capacity.
□ Hold Function, provided for weighing a moving object such as an animal.
□ Underhook, for measuring density and weighing magnetic materials.
□ Users of the balance can be limited by setting a password (Password lock function).
□ The balance is equipped with an RS-232C serial interface and a USB interface to communicate with a
computer. Windows computer using the Windows communication tools software (WinCT) make
building a system very easy. The latest Win-CT software can be downloaded from the A&D website.
Windows is the registered trademark of the Microsoft Corporation.
□ A small breeze break is included with the model featuring a minimum display of 0.001g.
4
1-2 About The Models
There are many models in the GX-A series and GF-A series with differences in the models being the
minimum display and weighing capacity. In this manual, they are listed collectively by the minimum
display as shown in the table below.
Model Minimum
display
0.001g model 0.001g GX-203A / GX-303A /
GX-403A / GX-603A /
GX-1003A / GX-1603A
0.01g model 0.01g
0.1g model 0.1g GX-6001A / GX-10001A GF-6001A / GF-10001A
□ For the GX-A series, a weight for sensitivity adjustment is built in. It is possible to use functions such
as calibration and auto calibration using the internal mass.
□ For the GF-A series, sensitivity adjustment weights are not built-in. When calibrating, it is necessary
to prepare an external weight.
GX-2002A / GX-3002A /
GX-4002A / GX-6002A /
GX-10002A
Internal mass type General type
Applicable model
GF-203A / GF-303A /
GF-403A / GF-603A /
GF-1003A / GF-1603A
GF-2002A / GF-3002A /
GF-4002A / GF-6002A /
GF-10002A
1-3 Compliance
Compliance with FCC Rules
Please note that this equipment generates, uses and can radiate radio frequency energy. This
equipment has been tested and has been found to comply with the limits of a Class A computing
device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed to provide
reasonable protection against interference when equipment is operated in a commercial environment.
If this unit is operated in a residential area, it may cause some interference and under these
circumstances the user would be required to take, at his own expense, whatever measures are
necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)
Compliance With Directives of CE mark
This device features radio interference suppression, safety regulation and restriction of Hazardous
Substances in compliance with the following Council Directives
Council directive 2014/30/EU EN61326 EMC directive
Council directive 2014/35/EU EN60950 Safety of Information Technology Equipment
Council directive 2011/65/EU EN50581 Restriction of the use of certain Hazardous Substances
The CE mark is an official mandatory European marking.
Please note that any electronic product must comply with local laws and regulations when sold or
used anywhere outside Europe.
5
2. Unpacking The Balance
The balance is a precision instrument. Unpack the balance carefully. Keep the packing material to be
used for transporting the balance in the future.
The packing contents depend on the balance model. See the illustrations to confirm that everything is
contained. When shipping options are included, optional accessories may be bundled.
GX-A / GF-A 0.001g models
Assemble the breeze break as shown below.
Follow the numbered sequence.
④
③
②
①
Bubble spirit level
Display
Keys
Leveling foot
Weighing pan
Pan support receptor
Main unit
Main unit rear side
RS-232Cinterface
USB interface
Antitheft hole
(
Please prepare the security cable by yourself.
AC adapter jack
AC adapter plug
)
AC adapter
AC adapter ID
label
Note : Please confirm that the AC adapter
type is correct for your local voltage
and receptacle type.
Main unit cover
USB cable
AX-KO5465-180
7
GX-A / GF-A 0.01g/0.1g models
Display
Bubble spirit level
Keys
AC adapter
Leveling foot
Weighing pan
Main unit rear side
USB interface
Pan support receptor
Dust plate for 10mg
Main unit
AC adapter jack
AC adapter plug
RS-232Cinterface
Antitheft hole
* Please prepare the security cable by
yourself**
AC adapter ID
label
Note : Please confirm that the AC adapter
type is correct for your local voltage
and receptacle type.
Main unit cover
USB cable
AX-KO5465-180
8
2-1 Installing The Balance
Install the balance as follows:
1. Refer to “2-2. PRECAUTIONS” for installing the balance.
2. Assemble the balance as shown in the illustration above.
3. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.
4. Confirm that the adapter type is correct for the local voltage and power receptacle type.
5. Connect the AC adapter to the balance. Warm up the balance for at least 30 minutes with nothing
on the weighing pan.
2-2 Precautions
To get the optimum performance from the balance and acquire accurate weighing data, note
the following:
□ Install the balance in an environment where the temperature and humidity are not excessive.
The best operating temperature is about 20℃±2℃ at about 45～60％RH relative humidity.
□ Install the balance where it is free of dust.
□ The weighing table should be solid and free from vibration, drafts and as level as possible.
□ Install the balance in a stable place avoiding vibration and shock. Corners of rooms on the
first floor are best, as they are less prone to vibration.
□ Install the balance where it is not affected by heaters or air conditioners.
□ Install the balance where it is not exposed to direct sunlight.
□ Install the balance away from equipment which produces magnetic fields.
□ Level the balance by adjusting the leveling feet and confirm it using the
bubble spirit level.
□ Warm up the balance for at least 30 minutes. Plug in the AC adapter as
usual.
□ Calibrate the balance before use or after having moved it to another
location. Refer to "8.Calibration".
OK NG
Leveling foot
Caution
Do not install the balance where flammable or corrosive gas is present.
9
Bubble spirit level
How to adjust the bubble spirit level
Wh
bbl
Wh
bbl
Wh
bbl
Wh
bbl
Red circle
Bubble
en the bu
Turn the leveling foot on the front right
in the clockwise direction.
OK NG
es is off to the left.
en the bu
position.
Turn both leveling feet on the front in the clockwise
direction at the same time.
es is off to the backward
Bubble
spirit level
Leveling
Down
Up
foot
en the bu
Turn the leveling foot on the front right
in the clockwise direction.
es is off to the right.
en the bu
es is off to the forward
position.
Turn both leveling feet on the front in the clockwise
direction at the same time.
Down
Leveling foot
Up
2-3 During Use
To acquire accurate weighing data, note the following:
□ Discharge static electricity from the material to be weighed. When a
sample could have a static charge, the weighing data is influenced. If
the ambient humidity becomes 45% or less, insulators such as
plastics are liable to become static electricity. Ground the balance
and try the following.
Eliminate the static electricity by GXA-25, AD-1683 as an accessory.
Or try to keep highly the ambient humidity
Or use a metal shield case.
Or wipe a charged plastic sample with the wet cloth.
□ The breeze break (1mg models only) and the clear main unit
cover are provided as accessories. The breeze break
components may be charged with static electricity when they
are unpacked or when the humidity is low. If the weighing value
is unstable or the balance has a problem with repeatability,
remove the breeze break. Or wipe the clear plates with a
moistened cloth, use an accessory DC static eliminator, GXA-25,
AD-1683 or apply an anti-static spray.
□ This balance uses a strong magnet as part of the balance
assembly, so please use caution when weighing magnetic
materials such as iron. If there is a problem, use the
underhook on the bottom of the balance to suspend the
material away from the influence of the magnet.
The Charged
sample
Metal case
Ground
Magnetic
material
10
□ Cancel the temperature difference between a sample and the
environment. When a sample is warmer (cooler) than the ambient
temperature, the sample will be lighter (heavier) than the true
weight. This error is due to a rising (falling) draft around the sample.
□ Make each weighing gently and quickly to avoid errors due to
changes in the environmental conditions.
□ When placing a sample on a weighing pan, do not give a strong
shock or do not exceed the weighing capacity. And place in the
center.
□ Do not drop things upon the weighing pan, or place a sample on the
pan that is beyond the balance weighing capacity. Place a sample in
the center of the weighing pan.
□ Do not use a sharp instrument such as a pencil to press the keys.
Use your finger only.
□ Press the RE-ZERO key before each weighing to prevent possible
errors.
□ Take into consideration the affect of air buoyancy on a sample when
more accuracy is required.
□ Keep the balance interior free of dust and foreign materials.
Convection
40 C
20 C
2-4 After Use
□ Avoid mechanical shock to the balance.
□ Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or repair.
□ Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that is
moistened with warm water and a mild detergent.
□ Avoid dust and water so that the balance weighs correctly. Protect the internal parts from liquid spills
and excessive dust.
2-5 Power Supply
□ When the AC adapter is connected, the balance is in the standby mode if the standby indicator is on.
This is a normal state and does not harm the balance. For accurate weighing, keep the AC adapter
connected to the balance and AC power unless the balance is not to be used for a long period of
time.
11
3.Display Symbols And Key Operation
Display symbols
Battery mark
Preset tare mark
Gross mark
Net mark
Processing indicator
Stabilization indicator
USB connecting mark
Number of statistical data
(Statistical calculation mode)
Displays the weight data relative to the
weighing capacity, in percentage, in the
weighing mode (Capacity indicator)
Standby indicator
Blinking display contents
Data number being displayed
Processing indicator
Auto calibration notice
NET G PT
Response indicators
Comparator indicators
Animal weighing mark
Shock indicators
Unit display
gross zero mark
Interval output mode
standby indicator
Weight data
Blinking
Interal output mode
active indicator
12
Key operation
Key operation affects how the balance functions. The basic key operations are:
“Press and release the key immediately” or “Press the key”
= normal key operation during measurement
“Press and hold the key”
(Press and release the key immediately.)
Press the key.
Key When pressed When pressed and held
Press and hold the key.
Stores the weighing data in memory or
Turns the display ON:OFF. The standby indicator is displayed when the display is
turned off. The weighing mode is enabled when the display is turned on.
When password function is enable, password input display will be displayed. Refer to
"20-3 Inputting Password Lock When Turning On The Balance"
This ON:OFF key is available anytime. Pressing the ON:OFF key during operation
will interrupt operation and turn the display OFF.
In the weighing mode, turns the minimum
weighing value on and off.
In the counting or percent mode, enters the
sample storing mode.
Switches the weighing units stored in the
function table.
Performs calibration of the balance using
the internal mass.
outputs to a printer or personal computer
depending on the function table settings.
(Factory setting = output)
、 、 、 、 ）
（
Enters the function table mode.
Displays other items of the calibration
menu.
Displays other items of the calibration
menu.
Enters mode to change the unit mass
registration number in counting mode.
By changing the function table:
・ Outputs "Title block" and "End
block" for GLP,GMP report.
Sets the display to zero.
・ Displays the data memory menu.
・ Enters mode for reading density
number in flow measurement.
13
4. Weighing Units
4-1 Units
With the GX-A /GF-A series balance, the following weighing units and weighing modes are available :
g
PC
Pct OZ
Lb
L
OZ
OZt
Counting mode
Percent mode
Density mode (To use this mode, it must be stored in the function table as described on
To select this mode, press the MODE key until the processing indictor
Programmable-unit (No unit displayed. For details, refer to "18. PROGRAMMABLE-UNIT".)
page 15. For details about this mode, refer to "19. DENSITY MEASUREMENT".
blinks with the unit "g" displayed. "DS" appears only when the density
value is displayed.)
A unit or mode can be selected and stored in the function table as described on page 15.
If a weighing mode (or unit of weight) has been turned off, that mode or unit will be missing in the
sequence. Tael has four varieties, one of which can be selected and installed at the factory.
mom
ct
dwt
GN
TL
tol
MES
DS
MLT
To select a unit or mode for weighing, press the MODE key.
For details about the units and modes, see the table below:
Name (unit, mode) Abbrev. Display
Function table
(Storing mode)
Conversion factor
1 g =
Gram g 1 g
Counting mode PCS
p C 5
p C 5
Percent mode %
Ounce (Avoir) OZ 28.349523125 g
Pound Lb 453.59237 g
Pound/Ounce L OZ l0 1Lb=16 oz,
1 oz=28.349523125 g
Troy Ounce OZt 31.1034768 g
Metric Carat ct 0.2 g
Momme mom 3.75 g
Pennyweight dwt 1.55517384 g
Grain (UK) GN 0.06479891 g
Ta el (HK general, Singapore)
Tael (HK jewelry) 37.429 g
TL
37.7994 g
Tael (Taiwan) 37.5 g
Tael (China) 31.25 g
Tola (India) tol 11.6638038 g
to1
to1
Messghal MES 4.6875 g
Density mode
(See note below)
DS
is used to
show the density.
Programmable-unit (Multi-unit) M LT
Note: The blinking processing indicator with “g” indicates that the density mode is selected.
14
The tables below indicate the weighing capacity and the minimum display for each unit, depending on the
balance model.
Unit
Gram
Ounce (Avoir)
Pound
Pound/Ounce 0Lb 7.76oz
Troy Ounce
Metric Carat
Momme
Pennyweight
Grain (UK)
Tael (HK general,
Singapore)
Tael (HK jewelry)
Tael (Taiwan)
Tael (China)
Tola (India)
Messghal
GX-203A GX-303A GX-403A GX-603A GX-1003A GX-1603A
GF-203A GF-303A GF-403A GF-603A GF-1003A GF-1603A
220 320 420 620 1100 1620
7.76 11.28 14.81 21.86 38.80 57.14
0.485 0.705 0.925 1.366 2.425 3.571
7.07 10.28 13.50 19.93 35.36 52.08
1100 1600 2100 3100 5500 8100
58.6 85.3 112.0 165.3 293.3 432.0
141 205 270 398 707 1041
3395 4938 6481 9568 16975 25000
5.82 8.46 11.11 16.40 29.10 42.85
5.87 8.54 11.22 16.56 29.38 43.28
5.86 8.53 11.20 16.53 29.33 43.20
7.04 10.24 13.44 19.84 35.20 51.84
18.8 27.4 36.0 53.1 94.3 138.8
46.9 68.2 89.6 132.2 234.6 345.6
Capacity
0Lb 11.28oz 0Lb 14.81oz 1Lb 5.86oz 2Lb 6.80oz 3Lb 9.14oz
Minimum
0.000005
display
0.001
0.00005
0.01oz
0.00005
0.005
0.0005
0.001
0.02
0.00005
0.00005
0.00005
0.00005
0.0001
0.0005
Unit
Gram 2200 3200 4200 6200 10200 0.01
Ounce (Avoir) 77.6 112.8 148.1 218.6 359.7 0.0005
Pound 4.85 7.05 9.25 13.66 22.48 0.00005
Pound/Ounce 4Lb 13.60oz 7Lb 0.87oz 9Lb 4.15oz 13Lb 10.69oz 22Lb 7.79oz 0.01oz
Troy Ounce 70.7 102.8 135.0 199.3 327.9 0.0005
Metric Carat 11000 16000 21000 31000 51000 0.05
Momme 586 853 1120 1653 2720 0.005
Pennyweight 1414 2057 2700 3986 6558 0.01
Grain (UK) 33951 49383 64815 95680 157410 0.2
Tael (HK
general,
Singapore)
Tael (HK jewelry) 58.7 85.4 112.2 165.6 272.5 0.0005
Tael (Taiwan) 58.6 85.3 112.0 165.3 272.0 0.0005
Tael (China) 70.4 102.4 134.4 198.4 326.4 0.0005
Tola (India) 188 274 360 531 874 0.001
Messghal 769 682 896 1322 2176 0.005
GX-2002A GX-3002A GX-4002A GX-6002A GX-10002A
GF-2002A GF-3002A GF-4002A GF-6002A GF-10002A
Capacity
58.2 84.6 111.1 164.0 269.8 0.0005
Minimum
display
15
Unit
Gram 6200 10200 0.1
Ounce (Avoir) 218 359 0.005
Pound 13.6 22.4 0.0005
Pound/Ounce 13Lb 10.69oz 22Lb 7.79oz 0.01oz
Troy Ounce 199 327 0.005
Metric Carat 31000 51000 0.5
Momme 1653 2720 0.05
Pennyweight 3986 6558 0.1
Grain (UK) 95680 157410 2
Tael (HK general,
Singapore)
Tael (HK jewelry) 165.0 272.0 0.005
Tael (Taiwan) 165.0 272.0 0.005
Tael (China) 198.0 326.0 0.005
Tola (India) 531.0 874.0 0.01
Messghal 1322 2176 0.05
GX-6001A GX-8001A Minimum
GF-6001A GF-8001A
Capacity
164.0 269.0 0.005
display
16
4-2 Storing Units
The units or modes can be selected and stored in the function table. The sequence of displaying the units
or modes can be arranged to fit the frequency of use.
The units stored are maintained in non-volatile memory, even if the AC adapter is removed.
Select a unit or mode and arrange the sequence of display as follows:
1 Press and hold the SAMPLE key until ba5fnc of the
function table is displayed, then release the key.
Press and hold
2 Press the SAMPLE key several times to display 1Unit .
3 Press the PRINT key to enter the unit selection mode.
4 Specify a unit or mode in the order to be displayed using
the following keys.
SAMPLE key To sequentially display the units.
RE-ZERO key To specify a unit or mode. The
stabilization indicator
appears when the displayed unit or
mode is specified.
If the key is pressed in units already
selected, the stability mark disappears.
5 Press the PRINT key to store the units or modes. The
balance displays end and then displays the next menu of
the function table.
Press
several times
Select
Displays the units
sequentially.
Specify
Store
6 Press the CAL key to exit the function table. Then the balance
returns to the weighing mode with the selected unit.
7 To select other unit or mode for weighing, press the MODE key.
17
Unit setting example
The example below sets the units in the order with g (gram) as the first unit followed by pc (counting
mode).
1 Press and hold the SAMPLE key until ba5fnc of the
function table is displayed, then release the key.
2 Press the SAMPLE key several times to display 1Unit .
3 Press the PRINT key to enter the unit selection mode.
4 Press the RE-ZERO key to specify the unit of g
The stabilization indicator appears when the unit
is specified.
5 Press the SAMPLE key to display 1Unit pC5 .
6 Press the RE-ZERO key to specify the unit of pc
The stabilization indicator appears when the unit
is specified.
7 Press the PRINT key to store the units.
The balance displays end and then displays the next
menu item of the function table.
8 Press the CAL key to exit the function table. Then the
balance returns to the weighing mode with g,the unit
selected first.
9 Press the MODE key to switch between g and pc (gpcs).
Displays the units
sequentially.
Press and hold
Press
several times
Select
Specify
Store
18
5.Weighing
5-1 Basic Operation
1. Press MODE key, and then select the appropriates units（
In this case, select " ".
2. Place a container on the weighing pan, if necessary.
Press the RE-ZERO key to cancel the weight (tare). The balance
displays 0.00 g. (The decimal point position depends on the
balance model.)
3. Place a sample on the pan or in the container. Wait for the stabilization
indicator
Remove the sample and container from the pan.
Notes
□ Press the SAMPLE key to turn on or off the minimum weighing value.
□ The weighing data can be stored in memory. For details, refer to “12. Data
Memory”.
□
When the ON:OFF key is pressed with a container placed on
the weighing pan and weighing is started, the balance
automatically cancels the weight (tare) and displays 0.00 g.
to be displayed. Read the value.
, , ）
Weighing
pan
Container
Sample
Remove the
sample
19
About the operation at when power is turned on
The balance will decide the reference zero point when the power is turned on (AC adapter is connected).
Depending on the load condition at that time, it will automatically judge whether to perform zero or tare
operation. The condition for determining which is used is "power on zero range", and when power on zero
range is exceeded, the tare subtraction operation is performed.
About re-zero operation
By pressing the RE-ZERO key, the display can be changed to zero.
Re-zero with the RE-ZERO key will automatically determine whether zero or tare operation is
performed.
The condition for determining which is used is "zero range", and when zero range is exceeded, the tare
subtraction operation is performed.
About measurement range
For the balance, the range that can be weighed is determined by model.
The total amount (net amount + tare quantity) up to the maximum display of each model is displayed, and
when the maximum display is exceeded, E is displayed to indicate that the weighing range is
exceeded.
When in excess in negative, -E is displayed.
Model Power on zero range Zero range -E display range
GX-203A GF-203A
GX-303A GF-303A
GX-403A GF-403A
GX-603A GF-603A
GX-1003A GF-1003A
GX-1603A GF-1603A
GX-2002A GF-2002A
GX-3002A GF-3002A
GX-4002A GF-4002A
GX-6002A GF-6002A
GX-10002A GF-10002A
GX-6001A GF-6001A
GX-10001A GF-10001A
Approx.±100g Approx.±4g
Approx.±100g Approx.±6g
Approx.±100g Approx.±8g
Approx.±100g Approx.±12g
Approx.±100g Approx.±20g
Approx.±100g Approx.±32g
Approx.±1kg Approx.±40g
Approx.±1kg Approx.±60g
Approx.±1kg Approx.±80g
Approx.±1kg Approx.±120g
Approx.±1kg Approx.±200g
Approx.±1kg Approx.±120g
Approx.±1kg Approx.±200g
Approx.-100g or less
Approx.-100g or less
Approx.-100g or less
Approx.-100g or less
Approx.-100g or less
Approx.-100g or less
Approx.-1kg or less
Approx.-1kg or less
Approx.-1kg or less
Approx.-1kg or less
Approx.-1kg or less
Approx.-1kg or less
Approx.-1kg or less
20
5-2 Counting Mode（PCS）
This is the mode to determine the number of objects in a sample based on the standard sample unit
mass. Unit mass means the mass of one sample. The smaller the variables in each sample unit mass is,
the more accurate the counting will be. This series balance is equipped with the Automatic Counting
Accuracy Improvement (ACAI) function to improve the counting accuracy.
Note
※ For counting, use samples that have a unit mass at least ten times greater than that of the minimum
display in grams.
※ If the sample unit mass variable is too large, it may cause a counting error.
※ To improve the counting performance, use the ACAI function frequently or divide the samples into
several groups and count each group.
Selecting the counting mode
1. Press the MODE key to select pC5 （ pC5 = unit）
Storing a sample unit mass
2. Press the SAMPLE key to enter the sample unit mass storing
mode. Even in the storing mode, pressing the MODE key will
switch to the next mode.
3. To select the number of samples, press the SAMPLE key
several times. It may be set to 5, 10, 25, 50 or 100.
Note
A greater number of samples will yield more accurate counting result.
4. Place a container on the weighing pan, if necessary. Press the
RE-ZERO key to cancel the weight (tare). The number specified
in step 3 appears.
25 0 is displayed if 25 is selected in step 3.
5. Place the number of samples specified on the pan. In this example, 25
pieces.
6. When PRINT key pressed, unit mass is stored and changes the count
display. (eg: when the number is 25,
Note
※ If the balance judges that the mass of the samples is TOO light
to acquire accurate weighing, it displays an error requiring the
addition of more samples to the specified number and press the
PRINT key. When the unit mass is stored correctly, the balance
proceeds to the counting mode.
※ If the balance judges that the mass of the samples is too light and is
not adequate to be used as the unit mass, it displays lo .
25 pC5 is displayed.
Weighing pan
Container
Sample
(25 pieces)
place
※ Registered unit mass is remembered even when the power is turned off.
Number mode（counting）
7. Counting is possible.
21
(The couting result)
Counting Mode Using The ACAI Function
The ACAI is a function that improves the accuracy of the unit mass automatically by increasing the number of
samples as the counting process.
ACAI: Automatic Counting Accuracy Improvement
After registering unit mass of "Step 6", proceed to the following "Step 8".
8. If a few more samples are added, the processing indicator turns on. To
prevent an error, add three or more. The processing indicator does not turn
on if overloaded. Try to add the same number of samples as displayed.
9. The balance re-calculates the unit mass while the processing indicator is blinking. Do not touch the
balance or samples on the pan until the processing indicator turns off.
10. Counting accuracy is improved when the processing indicator turns off.
11. Each time the above operation is performed, a more accurate unit mass will be obtained. There is
no definite upper limit of ACAI range for the number of samples exceeding 100. Try to add the
same number of samples as displayed.
12. Remove all the samples used in ACAI and proceed with the counting operation using the improved
unit mass.
Note ACAI will not function on the unit mass entered using the keys, or
digital input mode.
Processing mark
Storing the unit mass
By using the data memory function, 50 instances of storing a sample
unit mass can be stored.
1. Set the function setting item "Data memory function ( ) " to
"Stores unit mass in counting ( ) " .Refer to "10.Function
Ta bl e ".
2. The displayed "P＊＊" is the selected unit mass registration number.
3. Press and hold the PRINT key to switch to the mode to change the
unit mass registration number.
RE-ZEROkey Changes the registration number(+)
MODEkey Changes the registration number (-)
PRINTkey Decides on the displayed registration number.
CALkey Cancel the displayed registration number.
4. Multiple unit masses can be stored by registering them with different unit mass registration numbers.
Note
※ Unit weight can be read by ″ＵＮ:ｍｍ″command.
（mm corresponds to P01 to P50 with 01 to 50.）
※ The read unit mass can output by ″？UW ″command and can be changed by ″？UW ″
command.
Press and Hold
Note
※ ACAI cannot be used for the read unit mass.
22
5-3 Percent Mode (％)
The percent mode displays the weighting value in percentage compared to a 100% reference
mass and is used for target weighing or checking the sample variance.
Selecting The Percent Mode
1. Press the MODE key to select the unit % (Percent mode).
Storing The 100% Reference Mass
2. Press the SAMPLE key to enter the 100% reference mass
storing mode.
Even in the storing mode, pressing the MODE key will
switch to the next mode.
3. Place a container on the weighing pan, if necessary. Press the
key to cancel the weight (tare). The balance displays 100 0 %.
4. Place the sample to be set as the 100% reference mass on the pan or in the
container.
5. Press the PRINT key to store the reference mass. The
balance displays 100.00 %. (The decimal point position
depends on the reference value. The reference mass stored,
even if the AC adapter is removed, is maintained in
non-volatile memory.)
Note
RE-ZERO
Weighing pan
Container
Sample
(100%)
□ If the balance judges that the mass of the sample is too light to be used
as a reference, it displays
□ The displayed percentage is based on the 100% reference mass.
100% mass Decimal point position
Minimum display
0.001gmodel
Minimum display 0.01g
model
Minimum display 0.1g
model
□ Registered values are stored even when the power is turned off.
6. Remove the sample
lo .
0.100g ~ 0.999g 1%
1.000g ~ 9.999g 0.1%
10.000g ~ 0.01%
1.00g ~ 9.99g 1%
10.00g ~ 99.99g 0.1%
100.00g ~ 0.01%
1.0g ~ 9.9g 1%
10.0g ~ 99.9g 0.1%
100.0g ~ 0.01%
place
Display % of weighing object
Reading the percentage
7. Please a sample to be compared to the reference mass on the pan.
The displayed percentage is based on the 100% reference mass.
23
5-4 Animal Weighing Mode（Hold Function）
This is the mode to weigh a moving object such as an animal, even when the display of the
weighing data fluctuates. The hold function allows the average weight of the animal to be
displayed. To use the hold function, set the function in the function table. Refer to "10. Function
Table" and "10-3. Description Of The Class "Environment, Display" " for details.
24
6. Impact Detection Function
The GX-A / GF-A series has a function to detect impact to the mass sensor section and to display the
impact level.
By lowering the impact level at the time of loading, it is possible not only to alleviate variation in the
weighing value but also to reduce the risk of failure of the mass sensor section.
Especially when incorporating the balance in a production line, etc. and weighing by means such as an
automated system, impact to the sensor may be applied greater than expected.
When designing automatic systems and the like, it is recommended that you minimize the impact level
as much as possible while checking the shock indicator.
Impact level display is from level 0 to level 4, 5level.
Impact level Shock indicator Buzzer Contents
0
No
No
Safe
1
2
3
4
SHOCK
SHOCK
SHOCK
SHOCK
No
No
One
beep
Two
beep
Caution
Caution：Consider impact mitigation
Warning：Do not apply greater impact
Danger：Sensor may be damaged
Note
□ Impact on the weighing sensor may be applied to the weighing pan at time of loading, or it may be
applied from the table on which the balance is installed.
The impact detection function also works for impact applied from the table.
25
7. Response Adjustment / Self Check Function
This function stabilizes the weight value, reducing the influence on weighing that is caused by drafts and/or
vibration at the place where the balance is installed. This function adjusts by automatically analyzing the
environment or by hand-operation. The function has three stages as follows : Changing the weighing speed
changes the display refresh rate.
Display
FAST
MID.
SLOW
Function
setting
Cond 0
Cond 1
Cond 2
Response characteristic
Fast response, Sensitive value
Slow response, Stable value
7-1 Response Adjustment
Response adjustment can be changed by the following method.
Response
indicator
1. Press and hold the
then release the key.
2. Press the
Either FAST , MID or SLOW can be selected.
3. After a few seconds of inactivity the balance displays end . Then, it
returns to the weighing mode and displays the updated response
indicator.
The response indicator remains displayed for a while.
Note
The value set for response adjustment can be changed by
"Condition Cond " of "Environment display" in the Function
Ta bl e .
For the setting method, refer to "10.Function Table".
MODE key to select a weighing speed.
MODE key until RESPONSE is displayed, and
Press and Hold
Release and
press again
Each pressing switches
the indicators
After a while
26
7-2 Self-Check-Function / Automatic Setting Of Minimum
Weight Value
With the self-diagnosis function confirmation and display of repeatability can be performed in addition to
failure diagnosis, and whether or not the balance's performance is being exhibited can be easily
checked.
It is also possible to display and register the reference value of the minimum weighing value using
repeatability data.
For details of the minimum weighing value, refer to the technical information on our website.
（http://www.aandd.co.jp/adhome/products/balance/tecdoc_balance.html）
1. Press and hold the MODE key while weighing is displayed.
2. Release the key when RESPONSE display blinks.
3. displays and the self-diagnosis function is started.
4. When the diagnosis is completed, the diagnosis result is displayed.
When there are no problems in the balance, the
display blinks .
If is displayed blinking, there is a possibility that a fatal
fault has occurred in the balance. Please request repair.
SAMPLE key It is possible to switch the display of
diagnostic result, repeatability, minimum
weight value.
PRINT key The displayed contents are output.
5. Press the CAL key to display and move to the display
for minimum weighing value registration.
6. When registering as minimum weighing value of minimum weight value
display warning function performs the following.
Press the RE-ZERO key to change No/Go and display .
Press the PRINT key.
If not registered, press the PRINT key while displaying ,
or press CAL. Return to the weighing display.
Output
Output
Output
No change
No/Go
Switch
setting
* For minimum weighing warning function, refer to " 16.Minimum
Weighting Warning Function".
Note
For the minimum weighing warning function, settings can only be made
when logged in as administrator (AdMin) if the password lock function is
turned on.
27
8.Calibration
Since the balance's resolution is high, weighing values may change due to gravity and daily
environmental changes. It is necessary to perform calibration (sensitivity adjustment) with the weight in
order to keep the weighing values from changing even if gravity or the environment changes.
It is recommended that you calibrate if the balance is installed for the first time or relocated, or when
the weighing values change significantly in daily inspection, etc.
Adjustment means to adjust the weighing value of the balance using the reference weight or internal
mass. Calibration is to weigh with the reference weight and compare how much the result deviates
from the reference value. (Adjustment is not performed in calibration.)
Calibration (Sensitivity adjustment)
Auto calibration ------------------------------------------ Automatically adjust the balance using the internal mass
depending on the temperature change of the operating
environment or the set time and interval time.（GX-A
series）
Calibration test using the internal mass ---------- Using the internal mass, adjust the balance with a single
touch.
Calibration test using an external weight --------- Using an external mass, adjust the balance with an
external mass.
Calibration test（Sensitivity calibration）
Calibration test with your own weight -------------- Output the result of checking the accuracy of weighing
using your own weight.
*No adjustment is made.
Caution
□ Do not allow vibration or drafts to affect the balance during calibration.
□ To output the data for GLP/GMP using the RS-232C interface, set "GLP/GMP output (info)" of "Data
output (dout)". Refer to "10. Function Table". The time and date can be added to the GLP/GMP report.
If the time or date is not correct, adjust them. Refer to "10-4 Clock and Calendar Function".
□ The calibration and calibration test data can be stored in memory. To store them, set "Data memory
(data)" .
□ The accuracy of the weight used in calibration affects the accuracy of the balance after calibration.
□ Select the mass to be used for calibration and calibration tests from the table below.
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