A&D FX-i SERIES User Manual
FX-i SERIES
FX-120i / FX-200i / FX-300i
X-1200i / FX-2000i / FX-3000i
F
Precision Balance
INSTRUCTION MANUAL
WM+PD4001199
© 2006 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 the registered trademarks of the Microsoft Corporation.
CONTENTS
Basic Operation
1. INTRODUCTION .............................................................................................................................3
1-1 About This Manual.............................................................................................................................. 3
1-2 Features ............................................................................................................................................. 3
1-3 Compliance......................................................................................................................................... 3
2. UNPACKING THE BALANCE ........................................................................................................4
2-1 Unpacking........................................................................................................................................... 4
2-2 Installing the Balance ......................................................................................................................... 5
3. PRECAUTIONS ..............................................................................................................................6
3-1 Before Use.......................................................................................................................................... 6
3-2 During Use.......................................................................................................................................... 6
3-3 After Use .................................................................................................................. ........................... 7
3-4 Power Supply ..................................................................................................................................... 7
3-5 Display Symbols and Key Operation.......................................................................................... ........ 8
4. WEIGHING UNITS ..........................................................................................................................9
4-1 Units.................................................................................................................................................... 9
4-2 Storing Units ......................................................................................................................................11
5. WEIGHING ....................................................................................................................................12
5-1 Basic Operation (Gram Mode) ......................................................................................................... 12
5-2 Counting Mode (PCS) ...................................................................................................................... 13
5-3 Percent Mode (%)............................................................................................................................. 15
5-4 Statistical Calculation Mode ............................................................................................................. 16
5-5 Statistical Calculation Mode (Example of Use) ................................................................................ 20
Adapting to the Environment
6. RESPONSE ADJUSTMENT .........................................................................................................22
7. CALIBRATION ..............................................................................................................................23
7-1 Calibration Mode .............................................................................................................................. 23
7-2 Calibration Using an External Weight............................................................................................... 24
7-3 Calibration Test Using an External Weight....................................................................................... 26
8. FUNCTION SWITCH AND INITIALIZATION.................................................................................28
8-1 Permit or Inhibit ................................................................................................................................ 28
8-2 Initializing the Balance...................................................................................................................... 29
Functions
9. FUNCTION TABLE .......................................................................................................................30
9-1 Structure and Sequence of the Function Table ................................................................................30
9-2 Display and Keys.............................................................................................................................. 30
9-3 Details of the Function Table ............................................................................................................ 31
9-4 Description of the Class “Environment, Display”.............................................................................. 34
9-5 Description of the Item “Data Output Mode”..................................................................................... 36
9-6 Description of the Item “Data Format” ...................................................................................... ........ 37
9-7 Data Format Examples..................................................................................................................... 39
9-8 Description of the Item “Application Function”.................................................................................. 40
9-9 Comparator Function........................................................................................................................ 41
10. ID NUMBER AND GLP REPORT ...............................................................................................42
10-1 Setting the ID Number ..................................................................................................... ............... 42
10-2 GLP Report................................................................................................................ ..................... 42
11. UNDERHOOK.............................................................................................................................45
12. PROGRAMMABLE-UNIT ...........................................................................................................46
RS-232C Serial Interface
13. RS-232C SERIAL INTERFACE ..................................................................................................47
14. CONNECTION TO PERIPHERAL EQUIPMENT ........................................................................48
14-1 Connection to the AD-8121B Printer .............................................................................................. 48
14-2 Connection to a Computer.............................................................................................................. 49
14-3 Using Windows Communication Tools (WinCT) ............................................................................. 49
15. COMMANDS...............................................................................................................................51
15-1 Command List................................................................................................................................. 51
15-2 Acknowledge Code and Error Codes ............................................................................................. 52
15-3 Settings Related to RS-232C ......................................................................................................... 53
Maintenance
16. MAINTENANCE..........................................................................................................................54
17. TROUBLESHOOTING ................................................................................................................55
17-1 Checking the Balance Performance and Environment................................................................... 55
17-2 Error Codes .................................................................................................................................... 56
17-3 Asking For Repair ........................................................................................................................... 57
18. OPTIONS ....................................................................................................................................58
19. SPECIFICATIONS.......................................................................................................................60
20. EXTERNAL DIMENS IONS ........................................................................................................61
21. TERMS/INDEX............................................................................................................................62
1. INTRODUCTION
This manual describes how the FX-i 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.
1-1 About This Manual
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 and calibration.
Functions ................................. Describes various functions of the balance.
RS-232C serial interface.......... Describes the interface which transmits data and controls the balance.
Maintenance ............................ Describes maintenance, error codes, troubleshooting,
specifications and options.
1-2 Features
Compact general-purpose balance, can be installed almost anywhere.
Casing construction, strong protection against dust and moisture.
Stabilization time of one second. When FAST is selected for the response rate, a stabilization
time of one second, to read a displayed value after a sample is placed on the pan, has been
achieved.
Multiple weighing units with most of the common units used around the world.
Standard RS-232C serial interface to communicate with a computer and to output the Good
Laboratory Practice (GLP) data
Statistical calculation mode to statistically calculate the weight data, and display or output the
sum, maximum, minimum, range (maximum-minimum), average, standard deviation and
coefficient of variation.
Comparator Indicators, displaying the comparison results.
Hold Function, provided for weighing a moving object such as an animal.
Breeze break, provided for the FX-120i/200i/300i, for more accurate weighing.
Underhook, provided for suspended weighing.
As options, the USB interface (FXi-02), the Ethernet interface (Fxi-08) and the built-in battery
unit (Fxi-09) are available.
1-3 Compliance
Compliance with FCC Rules
Please note that this device generates, uses and can radiate radio frequency energy. This
device 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 this device 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.)
2. UNPACKING THE BALANCE
w
2-1 Unpacking
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.
How to assemble the breeze break (Only for FX-120i/200i/300i)
Assemble the breeze break as shown below.
Follow the numbered sequence.
Display
Bubble spirit
level
4
2
1
3
Weighing pan
Pan support
Main unit
AC adapter jack
RS-232C
serial interface
AC adapter plug
Keys
Leveling foot
Grounding
terminal
Main unit rear side
The AC adapter plug is
protected against dust
and may be difficult to
insert. When inserting
the plug, turn the plug
hile pushing on it.
AC adapter
AC adapter
ID label
Main unit cover
Note
Please confirm that the AC adapter type is correct
for your local voltage and receptacle type.
2-2 Installing the Balance
Install the balance as follows:
1. Place the balance on a solid weighing table. Refer to “3. PRECAUTIONS” for installing the balance.
2. FX-120
Assemble the pan support, weighing pan and breeze break, on the balance as shown in the
illustration on page 4.
FX-1200
Assemble the pan support and weighing pan on the balance as shown in the illustration on page 4.
3. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.
4. Confirm that the AC 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.
Note
The AC adapter plug is protected against dust and may be difficult to insert. When inserting
the plug, turn the plug while pushing on it.
i /200i /300i
i /2000i /3000i
3. PRECAUTIONS
To get the optimum performance from the balance and acquire accurate weight data, note the
following:
3-1 Before Use
Install the balance in an environment where the
temperature and humidity are not excessive. The best
operating temperature is about 20°C / 68°F at about
50% relative humidity.
Install the balance where it is not exposed to direct
sunlight and it is not affected by heaters or air
conditioners.
Install the balance where it is free of dust.
Install the balance away from equipment which
produces magnetic fields.
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.
The weighing table should be solid and free from
vibration, drafts and as level as possible.
Level the balance by adjusting the leveling feet and
confirm it using the bubble spirit level.
Ensure a stable power source when using the AC
adapter.
Plug in the AC adapter and warm up the balance for at
least 30 minutes.
Calibrate the balance before use or after having
moved it to another location.
Caution
Do not install the balance where flammable or corrosive gas is present.
3-2 During Use
Discharge static electricity from the material to be
weighed (hereinafter referred to as the sample). When
a sample could have a static charge, the weight data is
influenced. Ground the balance and try the following:
Eliminate static electricity using the optional
AD-1683 DC static eliminator.
Try to keep the ambient humidity above 45%RH.
Use a metal shield case for a charged sample.
Wipe charged plastic samples with a moistened
cloth.
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.
Eliminate 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 caused by the evaporation of moisture
from the sample or the absorption of moisture by the sample.
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 eliminate possible errors.
Calibrate the balance periodically so as to eliminate 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.
The breeze break (FX-120i /200i /300i only) is provided as an accessory. An anti-static
treatment has been applied to the breeze break components, but they may be charged with
static electricity when they are unpacked or when the humidity is low. If the weight value is
unstable even when there are no drafts or the balance has a problem with repeatability,
remove the breeze break. Or wipe the clear plates with a moistened cloth, use the optional
AD-1683 DC static eliminator or apply an anti-static spray.
3-3 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.
The edge of the weighing pan is sharp. Use much care when cleaning the pan.
Avoid dust and water so that the balance weighs correctly. Protect the internal parts from liquid
spills and excessive dust.
3-4 Power Supply
When the AC adapter is connected, the balance is in the standby mode if the standby
indicator is on (refer to “3-5 Display Symbols and Key Operation”). This is a normal state and
does not harm the balance. For accurate weighing, warm up the balance for at least 30
minutes before use.
3-5 Display Symbols and Key Operation
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”
Display symbols
Each key, when pressed or when pressed and held, functions as follows:
Key When pressed When pressed and held
Turns the display on or off. The standby indicator is displayed when the display is
turned off. The weighing mode is enabled when the display is turned on.
This key is available anytime. Pressing the key during operation will interrupt the
operation and turn the display off.
In the weighing mode, turns the minimum
weighing value on or off.
In the counting or percent mode, enters
the sample storing mode.
Switches the weighing units stored in the
function table.
Refer to “4. WEIGHING UNITS”.
Cancels the operation when performing
settings.
Enters the function table mode.
Refer to “9. FUNCTION TABLE”.
Enters the response adjustment mode.
Enters the calibration mode.
Outputs the weight data to a printer or
personal computer using the RS-232C
serial interface, depending on the
function table settings.
Confirms the operation when performing
settings.
Sets the display to zero.
No function at the factory setting
By changing the function table:
Outputs “Title block” and “End block” for
GLP report.
4. WEIGHING UNITS
4-1 Units
With the FX-i series balance, the following weighing units and weighing modes are available:
A unit or mode can be selected and stored in the function table as described on page 11.
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.
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 g g 1 g
Counting mode pcs pcs pcs
Percent mode % % %
Ounce (Avoir) oz oz oz 28.349523125 g
Pound lb lb lb 453.59237 g
Pound/Ounce
L OZ
Troy Ounce OZt ozt ozt 31.1034768 g
Metric Carat ct ct ct 0.2 g
Momme mom 3.75 g
Pennyweight dwt dwt dwt 1.55517384 g
Grain (UK) GN GN GN 0.06479891 g
Tael (HK general, Singapore) 37.7994 g
Tael (HK jewelry) 37.429 g
TL
Tael (Taiwan) 37.5 g
Tael (China)
Loz
tl tl
LO
1Lb=16 oz,
1 oz=28.349523125 g
31.25 g
Tola (India) tol tol tol 11.6638038 g
Messghal mes 4.6875 g
Programmable-unit (Multi-unit) Mlt MLT MLT
The tables below indicate the weighing capacity and the minimum display for each unit, depending
on the balance model.
Unit
FX-120
Gram 122.000 220.000 320.000 0.001
Ounce (Avoir) 4.30340 7.76025 11.28765 0.00005
Pound 0.268965 0.485015 0.705480 0.000005
Pound/Ounce 0L 4.30oz 0L 7.76oz 0L 11.29oz 1L 0.01oz
Troy Ounce 3.92240 7.07315 10.28825 0.00005
Metric Carat 610.000 1100.000 1600.000 0.005
Momme 32.2535 58.6665 85.3335 0.0005
Pennyweight 78.621 141.776 206.220 0.001
Grain (UK) 1882.74 3395.12 4938.34 0.02
Tael (HK general, Singapore) 3.22755 5.82020 8.46575 0.00005
Tael (HK jewelry) 3.25950 5.87780 8.54950 0.00005
Tael (Taiwan) 3.25330 5.86670 8.53330 0.00005
Tael (China) 3.90400 7.04000 10.24000 0.00005
Tola (India) 10.4597 18.8618 27.4353 0.0001
Messghal 26.0265 46.9335 68.2665 0.0005
i FX-200i FX-300i
Minimum display
Capacity
Unit
FX-1200
Gram 1220.00 2200.00 3200.00 0.01
Ounce (Avoir) 43.0340 77.6025 112.8765 0.0005
Pound 2.68965 4.85015 7.05480 0.00005
Pound/Ounce 2L 11.03oz 4L 13.60oz 7L 0.88oz 1L 0.01oz
Troy Ounce 39.2240 70.7315 102.8825 0.0005
Metric Carat 6100.00 11000.00 16000.00 0.05
Momme 322.535 586.665 853.335 0.005
Pennyweight 786.21 1417.76 2062.20 0.01
Grain (UK) 18827.4 33951.2 49383.4 0.2
Tael (HK general, Singapore) 32.2755 58.2020 84.6575 0.0005
Tael (HK jewelry) 32.5950 58.7780 85.4950 0.0005
Tael (Taiwan) 32.5330 58.6670 85.3330 0.0005
Tael (China) 39.0400 70.4000 102.4000 0.0005
Tola (India) 104.597 188.618 274.353 0.001
Messghal 260.265 469.335 682.665 0.005
i FX-2000i FX-3000i
Minimum display
Capacity
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 in the function table so as to fit the frequency of use.
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.
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.
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.
6 Press the CAL key to exit the function table. Then the
balance returns to the weighing mode with the unit
specified first in step 4.
Notes
When the power is turned on, the scale displays the unit
specified first in step 4.
In the weighing mode, to select a unit or mode for weighing,
press the MODE key.
5. WEIGHING
5-1 Basic Operation (Gram Mode)
1 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.)
2 Place a sample on the pan or in the container.
3 Wait for the stabilization indicator to be displayed. Read
the value.
While the stabilization indicator is on, pressing the PRINT
key will output the weight value, using the RS-232C serial
interface.
Note
Peripheral equipment, that is sold separately , such
as a printer or a personal computer is required.
4 Remove the sample and container from the pan.
Notes
To use other units, press the MODE key and select an
appropriate unit.
Press the SAMPLE key to turn on or off the minimum
weighing value.
When the ON:OFF key is pressed with a container placed
on the weighing pan, the balance displays 0.00 g and
weighing is started,
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 are, the more accurate the counting will be. The FX-i series balance is equipped with the
Automatic Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.
Note
If the sample unit mass variable is too large, it may cause a counting error.
Selecting the counting mode
1 Press the MODE key to select 1pcs (counting mode).
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.
e.g.: 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 Wait for the stabilization indicator to come on. Press the
PRINT key to calculate and store the unit mass. The
balance displays 25
count samples with this unit mass. (The sample unit mass
stored, even if the AC adapter is removed, is maintained
in non-volatile memory.)
To improve the accuracy of the unit mass, proceed to
step 8.
Notes
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 . In that case, store the mass by some quantity.
For example, when the model with the minimum weighing
value of 0.01 g is used and 10 pieces of samples weigh 0.05
g. Store 100 pieces of samples as 10 and multiply the
weighing result by 10.
pcs
(counting mode) and is set to
If the balance judges that the mass of the samples is too light to aquire accurate weighing, it
displays an error requiring the addition of more samples to the specified number. In the
PCS
example above, 150-
appears, requiring 25 more samples. Add 25 samples and press the
PRINT key. When the unit mass is stored correctly, the balance proceeds to the counting
mode.
Counting operation
7 Place the samples to be counted on the pan.
While the stabilization indicator is on, pressing the PRINT
key will output the weight value, using the RS-232C serial
interface.
Note
Peripheral equipment, that is sold separately , such
as a printer or a personal computer is required.
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
and averaging the unit mass variable to minimize the
weighing error, as the counting process proceeds.
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.
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.
11 Remove all the samples used in ACAI and proceed with the counting operation using the
improved unit mass.
5-3 Percent Mode (%)
This is the mode to display the weight value in percentage compared to a 100% reference mass and
is used for target weighing or checking the sample variable.
Selecting the percent mode
1 Press the MODE key to select % (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 RE-ZERO 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
If the balance judges that the mass of the sample is too
light to be used as a reference, it displays lo . Do not use
the sample.
6 Remove the sample.
Reading the percentage
7 Place a sample to be compared to the reference mass on
the pan. The displayed percentage is based on the 100%
reference mass.
While the stabilization indicator is on, pressing the PRINT
key will output the weight value, using the RS-232C serial
interface.
Note
Peripheral equipment, that is sold separately , such
as a printer or a personal computer is required.
5-4 Statistical Calculation Mode
The statistical calculation mode statistically calculates the weight data, and displays or outputs the
results. To use the statistical calculation mode, set the "Application function (apf)" parameter of
“Application (ap fnc)” in the function table to “2”, as described below.
Statistical items available are number of data, sum, maximum, minimum, range
(maximum-minimum), average, standard deviation and coefficient of variation. What statistical items
to output can be selected from the three modes in the function table.
The wrong data input can be canceled by the key operation, if immediately after the input.
Turning the balance off will delete the statistical data.
The standard deviation and coefficient of variation are obtained by the equation below:
Standard deviation=
Standard deviation
Coefficient of variation (CV)=
where Xi is the i-th weight data,
N is number of data.
x 100 (%)
Average
5-4-1 Getting Started
Switching to the Statistical Function Mode (Changing The Function Table)
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
1ap fnc .
3 Press the PRINT key to display apf 0 .
4 Press the RE-ZERO key to display apf 2 .
To select statistical items to output, go to step 5.
To store the statistical function mode setting, go to
step 7.
To disable the statistical calculation mode, press the
RE-ZERO key to select apf 0 .
Selecting the statistical items to output
5 Press the SAMPLE key to display 5taf 0 .
6 Press the RE-ZERO key to select the output items.
In the example, 5taf 1 is selected to output the
number of data, sum, maximum, minimum, range
(maximum-minimum) and average.
Parameter Description
0
1
2
7 Press the PRINT key to store the setting.
Note
The statistical calculation mode will be enabled using the
ON:OFF key or when the power is turned on.
8 Press the CAL key to return to the weighing mode.
Number of data, sum
Number of data, sum
Maximum, minimum, range (maximum – minimum), average
Number of data, sum
Maximum, minimum, range (maximum – minimum), average,
Standard deviation, coefficient of variation
Selecting the unit
9 Press the MODE key to select the unit to be used for
the statistical calculation mode.
Notes
Selecting the unit using the MODE key is not available after the
data is entered. In this case, clear the data as described on
page 19 and select the unit using the MODE key.
When the statistical calculation mode is to be enabled upon power-on, select the unit in
“Unit (Unit)” of the function table beforehand.
5-4-2 Using The Statistical Calculation Mode
Entering data for statistical calculation
Use the following keys to operate the statistical calculation mode.
MODE key
SAMPLE key ............ Turns the minimum display on or off, in the weighing mode.
RE-ZERO key
PRINT key
CAL key
...............
...........
................
....................
When the data is entered, moves between the displaying items (weighing mode,
statistical results and data operation) each time the key is pressed.
When no data has been entered, selects the unit.
Sets the display to zero in the weighing mode.
Outputs the data number and the weight data and includes the weight data to
statistical calculation in the weighing mode. (Output is not in the data format
specified in the function table because of the data number added.)
Outputs the statistical results while the statistical results are displayed. (Output
is not in the data format specified in the function table.)
Returns to the weighing mode.
1 Press the RE-ZERO key to set the display to zero.
2 Place the sample on the weighing pan and wait for
the stabilization indicator to turn on.
3 Press the PRINT key to add the data displayed to
statistical calculation. The number of data on the upper
left of the display increases by 1.
4 Repeat steps 1 to 3 for each weighing.
Outputting the statistical results
5 Each time the MODE key is pressed, the display changes:
the results as selected in “Statistical function mode output
items (5taf)”, CanCel and Clear .
Notes
When the number of data is 1, the standard
deviation and coefficient of variation are
displayed as - - - - - - - .
When the average is 0, the coefficient of
variation is displayed as - - - - - - - .
Statistical items are indicated on the upper left
of the display using the following symbols.
Symbol Statistical item
SUM Sum
MAX Maximum
MIN Minimum
R Range (Maximum – minimum)
AVE Average
SD Standard deviation
CV Coefficient of variation
6 While the results are displayed, press the
PRINT key to output the results.
Output example
Deleting the latest data
When the wrong data is entered, it can be deleted and excluded from statistical calculation. Only the latest
data can be deleted.
1 In the weighing mode, press the MODE key, and then
press the SAMPLE key several times to display
1CanCel .
2 Press the PRINT key to display Can no .
3 Press the RE-ZERO key to display Can go .
4 Press the PRINT key to delete the latest data and
exclude it from statistical calculation.
The number of data decreases by 1 when the balance
returns to the weighing mode.
Clearing the statistical data
All the statistical data will be deleted and the number of data will be 0 (zero).
1 In the weighing mode, press the MODE key,
and then press the SAMPLE key several times
to display Clear .
2 Press the PRINT key to display Clr no .
3 Press the RE-ZERO key to display Clr go .
4 Press the PRINT key to delete the statistical
data.
The number of data becomes 0 (zero) when the
balance returns to the weighing mode.
5-5 Statistical Calculation Mode (Example of Use)
Here, as an example of use of the statistical calculation mode, mixing of the multiple formulae such
as medicine is described. The mixing process is recorded using the balance and the printer.
In the example, the FX-3000i and the AD-8121B (dump print mode) are connected using the RS-232C
serial interface.
5-5-1 Getting Started
Changing the function table
Changes : ●To enable the statistical calculation mode
●To enable “Zero after output”
Enabling the statistical calculation mode
1 Enter the function table menu.
Press and hold the SAMPLE key until ba5fnc of
the function table is displayed, then release the key.
2 Select the application function.
Press the SAMPLE key several times to display
1ap fnc . Then, press the PRINT key to display
1°apf 0 .
3 Change the application function parameter to “2”.
Press the RE-ZERO key to display apf 2 . Press the
PRINT key to confirm the change. After end ,
1ba5fnc1 is displayed.
Enabling “Zero after output”
4 Select “Zero after output”.
Press the SAMPLE key several times to display 1dout .
Then, press the PRINT key to display °prt 0 , and press
the SAMPLE key several times to display 1°ar-d 0 .
5 Enable “Zero after output”.
Press the RE-ZERO key to display ar-d 1 . Then,
press the PRINT key to confirm the change. After
1end , 5if is displayed.
Returning to the weighing mode
6 Press the CAL key to return to the weighing mode.
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