EJ-123/EJ-303
EJ-1202/EJ-3002
EJ-54D2
Compact Precision Balance

1WMPD4002746F

This Manual and Marks
All safety messages are identified by the following, “WARNING” or “CAUTION”, of ANSI
Z535.4 (American National Standard Institute: Product Safety Signs and Labels). The
meanings are as follows:

WARNINGA potentially hazardous situation, which if not avoided, could result
in death or serious injury.

CAUTION

A potentially hazardous situation, which if not avoided, may resultin minor or moderate injury.

This is a hazard alert mark.

NoteThis manual is subject to change without notice at any time to improve the product. No
part of this manual may be photocopied, reproduced, or translated into another language
without the prior written consent of the A&D Company.

Product specifications are subject to change without any obligation on the part of the
manufacturer.

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 Class A
digital devices pursuant to 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.)© 2019 A&D Company Ltd. All rights reserved

Microsoft, Excel and Word are trademarks of Microsoft Corporation.

CONTENTS
1.

INTRODUCTION .................................................................................................................... 5

2.

UNPACKING ........................................................................................................................... 6

3.

PART NAMES AND FUNCTIONS ......................................................................................... 7

4.

SETTING UP ........................................................................................................................ 10
4.1.
4.2.
4.3.
4.4.

5.

OPERATION ......................................................................................................................... 16
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.

6.

Calibration Using a Weight ............................................................................................................................. 24
Gravity Acceleration Correction...................................................................................................................... 25

FUNCTIONS ......................................................................................................................... 26
8.1.
8.2.
8.3.
8.4.
8.5.

9.

Indicators and Keys ........................................................................................................................................ 22
Selecting a Weighing Unit .............................................................................................................................. 23
Adding the Accumulation Data ....................................................................................................................... 23
Displaying the Accumulation Data ................................................................................................................. 23
Deleting the Accumulation Data ..................................................................................................................... 23

CALIBRATION ...................................................................................................................... 24
7.1.
7.2.

8.

Turn the Power ON and OFF ......................................................................................................................... 16
LCD Backlight ................................................................................................................................................. 16
Units ................................................................................................................................................................. 17
Selecting a Weighing Unit .............................................................................................................................. 18
Basic Operation (Gram Mode) ....................................................................................................................... 18
Weighing Range (EJ-54D2 only) ................................................................................................................... 19
Display Hold Function ..................................................................................................................................... 19Counting Mode (pcs) ...................................................................................................................................... 20
Percent Mode (%) ........................................................................................................................................... 21

ACCUMULATION FUNCTION ............................................................................................. 22
6.1.
6.2.
6.3.
6.4.
6.5.

7.

Setting Up Your Balance................................................................................................................................. 10Power Source.................................................................................................................................................. 11
Breeze Break (For the EJ-123 / EJ-303) ....................................................................................................... 13
Breeze Break (For the EJ-54D2) ................................................................................................................... 14

Key Operation ................................................................................................................................................. 26
Entering the Function Setting Mode .............................................................................................................. 26
Setting Example .............................................................................................................................................. 27
Storing Weighing Units ................................................................................................................................... 28
Function List .................................................................................................................................................... 29

OPTIONS .............................................................................................................................. 31
9.1.
9.2.
9.3.
9.4.

EJ-02 USB Interface ....................................................................................................................................... 31
EJ-03 RS-232C Serial Interface ..................................................................................................................... 32
Data Format .................................................................................................................................................... 33
EJ-13 Density Determination Kit .................................................................................................................... 35

10. ID NUMBER AND GLP......................................................................................................... 383

10.1.
10.2.

Setting the ID Number ................................................................................................................................ 38
GLP Report ................................................................................................................................................. 39

11. MAINTENANCE ................................................................................................................... 43
11.1.
11.2.

Notes on Maintenance ............................................................................................................................... 43
Error Codes ................................................................................................................................................. 44

12. SPECIFICATIONS ................................................................................................................ 46
12.1.
12.2.
12.3.
12.4.

Generals ...................................................................................................................................................... 46
Other Weighing Units.................................................................................................................................. 48
Options ........................................................................................................................................................ 49
Dimensions ................................................................................................................................................. 49

13. GRAVITY ACCELERATION MAP ........................................................................................ 52

4

1. INTRODUCTION
This manual describes how the compact precision balances work and how to get themost out of them in terms of performance.
The EJ-123, EJ-303, EJ-1202, EJ-3002 and EJ-54D2 balances have the following features:
The EJ-123, EJ-303, EJ-1202 and EJ-3002 are high-resolution type electronic balanceshaving a display resolution of 1/120,000 to 1/300,000.
The EJ-54D2 is a dual-range balance as shown below:
Gram mode Weighing capacity 22 g/Minimum display division 0.0002 g
Weighing capacity 52 g/Minimum display division 0.001 g
The EJ-123, EJ-303 and EJ-54D2 are equipped with a breeze break which is provided
as standard for more accurate weighing.
The EJ-54D2 is equipped with a carat pan for weighing jewelry which is provided as
standard.
The balances have a counting function, a percent function, a hold function and an
accumulation function.
The LCD backlight will help with use in a dimly lighted place.
The balances can be operated with an AC adapter, or 4 x size “AA” batteries forcordless operation.
An optional USB interface is available for connecting the balance to a personal
computer.
An optional RS-232C serial interface is available for connecting the balance to a
printer or personal computer and outputting Good Laboratory Practice (GLP) data.

52. UNPACKING
When unpacking the balance, check whether all of the following items are included andremove the protective film for the breeze break and the weighing pan before use:
Main unit
EJ-123 / EJ-303

Main unit
EJ-1202 / EJ-3002
Weighing pan

Weighing pan

Protective film

Wind shield cap(EJ-123 / EJ-303 only)

Main unit
EJ-54D2
Carat pan
Weighing pan
Pan support

Instruction Manual
AC adapter
Please confirm that the AC adapter
type is correct for your local voltage
and receptacle type6

3. PART NAMES AND FUNCTIONS
EJ-123 / EJ-303 / EJ-1202 / EJ-3002
Wind shield cap(Accessory)(EJ-123 / EJ-303 only)
Breeze break(EJ-123 / EJ-303 only)
Weighing pan(The shape of weighing pan of
the EJ-1202 / EJ-3002 is square.)Spirit level
ON:OFF

key

Serial number
LCD

Calibration switch cover (bottom)

SAMPLE

key

PRINT

key

RE-ZERO

key

UNITS

key

Leveling footEJ-02 / EJ-03 slot
Battery cover
Security slot
(Use a security cablecommercially available.)

AC adapter jack7

EJ-54D2Breeze break

Weighing pan

Spirit level
ON : OFFkey
Leveling footSerial number

LCD
Calibration switch cover (bottom)

SAMPLE

key

PRINT

key

RE-ZERO

key

UNITS

key

EJ-02 / EJ-03 slot
Battery cover

Security slot
(Use a security cablecommercially available.)

AC adapter jack8

Total indicator

Measurement in air
for specific gravity

M+ indicator
ACAI indicator

Measurement in water
for specific gravity

Battery indicator

Density (Specific gravity)

Hold indicator
STABLE indicator
NET indicator

STABLE

Weighing units

NET
ZERO

ZERO indicator

Turns the power ON or OFF.

Switches the weighing units and modes.

Clears the display to zero (zero and tare).
Weighing mode (EJ-54D2 only):
Changes the weighing range (when “rng 0” is selected.)pcs mode: Enters the sample unit weight storing mode.
% mode:Enters the 100% weight storing mode.
Accumulation mode: Adds the weight value to total.
Held down to enter the function setting mode.
Outputs the weight value to a printer or personal computer.
Stores a unit weight, 100% weight or other setting values to the balance.

94. SETTING UP
4.1.

Setting Up Your Balance

1. Place the weighing pan on the balance.
2. Adjust the level of the balance using the leveling feet. Use the spirit level to confirm.
The bubble should be in the center of the circle.
For the EJ-123, EJ-303, EJ-1202 and EJ-3002 balances, the two leveling feet on thefront side have a two-tier structure. To adjust the height of the balance, turn the lower
leveling feet. Loosen the upper leveling feet if the lower leveling feet are not easy to
turn.
Loosen the upper leveling foot if thelower leveling foot is not easy to turn.

Adjust the height of the balance byturning the lower leveling foot.

After adjusting the height of the balance,tighten the upper leveling feet
if a rattling of the leveling feet occurs.
3. Calibrate your balance before use. (Refer to “7. CALIBRATION”)

About the wind shield cap (EJ-123 / EJ-303 only)
Should the displayed weight value be unstable due to a draft, attach the accessory windshield cap to the hole located on the top of the breeze break.
It is possible to reduce the entry of a draft into the breeze break to some extent.
If attached, it may take time for the STABLE indicator to be displayed due to a variancein air pressure as a result of the closure of the breeze break.
Wind shield cap (accessory)10Balance location
To measure correctly, to keep the balance in good condition, and to prevent hazards,
observe the following:
Do not install the balance in locations that are subject to excessive dust, breezes, vibration,
large temperature fluctuations, condensation, or that may have magnetic fields.
Install the balance on a solid surface and keep the balance level.
Do not install the balance in direct sunlight.
Do not install the balance near heaters or air conditioners.
Use a stable AC power source.
Do not install the balance in locations where combustible or corrosive gases may exist.
Allow the balance to reach equilibrium with the ambient temperature before use.
To ensure accurate weighing, turn the power ON at least half an hour before use, or
have the AC adapter connected to the balance.
When the balance is installed for the first time, or the balance has been moved, carryout calibration as described in “7. CALIBRATION”.

4.2.

Power Source

For the power source, the AC adapter or 4 x size “AA”
batteries can be used.

When Using the AC Adapter
Use a stable power source. To use the AC adapter,
insert the AC adapter plug into the AC adapter jackon the rear side of the balance.
The balance is always connected to power internally(warming up status) while the AC adapter is connectedto the balance even when nothing is shown on thedisplay.
AC adapter jack

When Using the Batteries
Prepare 4 x size “AA” (LR6 / R6P) batteries. The batteries are not provided with thebalance.

CAUTION
Take great care with the polarity of the batteries. The polarity marks are shown in thebattery box.
Replace the used batteries with four new ones when “lb0” is displayed.
Do not mix used and new batteries. Do not mix battery types. It may cause damage tothe batteries or the balance.
The battery life depends on the ambient temperature, how used and so on.
Remove batteries when the balance is not to be used for a long period of time.
They may leak and cause damage to the balance.
Damage due to battery leakage is not covered by the warranty.

11

Installing the Batteries
1.
2.
3.
4.

Turn the balance off and disconnect the AC adapter if used.
Slide the battery cover off.
Push the battery box up to unhook and pull it out.
Insert four new batteries (LR6 / R6P / AA) into the battery box,
taking extreme care of the polarities.
5. Push the battery box into the balance as before.
6. Attach the battery cover.
The battery indicator turns on when the balanceis powered by the batteries. It will change as thebattery voltage decreases.
New





Battery coverComing close to “lb0”.

Four batteries

HookBattery box

12

Hook

4.3.

Breeze Break (For the EJ-123 / EJ-303)

The breeze break can prevent a measurement error due to a (disturbing) wind.
The clear cover can be disconnected from the fixing frame easily when adding an
excessive stress during operation. Assemble the breeze break with the following steps.

Assembling the Breeze Break
1. Slide back the fixing frame toattach the breeze break.
(Or install the fixing frame into theguide on the balance.)

Step 1Fixing frame
Guide
Hook

2. Attach the axis of the breeze
break on the groove of the fixing
frame when keeping the angle of
90 degrees.

Guide
Hook

3. Slide and fix the breeze break.

Breeze break

4. Close the breeze break.
90°
GrooveStep 2

Pivot axis

Breeze break
Step 3

Step 413

4.4.

Breeze Break (For the EJ-54D2)

The breeze break can prevent a measurement error due to a (disturbing) wind.

Detaching the Breeze BreakWith the hooks located on the left and right sides of the balance held up, raise thebreeze break.
1. Slide the two hooks upward.
The hooks are located on the left andright sides of the balance.

Hook

2. Raise the breeze break as is.

14

Attaching the Breeze Break
1. Align the breeze break with the balance.
Place the breeze break so that the handle of the sliding door will face forward.
2. Engage the hooks to the guides on the balance to secure the breeze break.
Confirm that the two hooks are securely engaged.
If the position of the breeze break is not correct, it will not be secured to the balance.
HandleHook

GuidesUsing the Breeze Break
Slide the handle of the sliding door forward or backward to close or open the door.

Handle15

5. OPERATION
5.1.

Turn the Power ON and OFF

1. Press the

ON:OFF

key to turn the power ON.

STABLE

Weighing units

NET
ZERO

All of the symbols are displayed as shown above.
(About units: Only the available units will be displayed.)
Only when operated using the batteries, the balance subsequently performs acountdown using the underscore on the display.
The display turns off except for a weighing unit and the decimal point.
The balance waits for the weight value to become stable, and then, zero will be
displayed along with the ZERO indicator (power-on zero).
The range for power-on zero is within ±50% of the weighing capacity around thecalibrated zero point.
If the power is turned ON while there is a load beyond this range, the balance will betared to zero and the NET and ZERO indicators turn on.
For the EJ-54D2, only when operated using the batteries, the weight value flashes
for a certain period of time after power-on zero. While the weight value is flashing,weighing is possible. But the balance may not be stable enough depending on theprior status of power to the balance. So, for more accurate weighing, wait for theweight value to stop flashing before weighing.
2. Press the

ON:OFF

key again to turn the power OFF.

Auto power-off function
It is possible to have the power automatically turned OFF, if the zero band display(band width: ±4d from the zero point, d=readability (scale interval or “division”)
continues for approximately 5 minutes. Refer to “8.5. Function List” and set thefunction to “poff”.

5.2.

LCD Backlight

The LCD backlight will turn on when the weight value changes more than 4d (4 x
readability (scale interval or “division”)) or any key operation is performed. When theweight value becomes and stays stable for a certain period of time, the backlight willautomatically turn off. There is also a setting that the backlight is always on or off. For
details, refer to the item “ltUp” of “8.5. Function List”.
16

5.3.

Units

The most common unit of weight used around the world is the gram, but there is often aneed to shift to alternative units specific to the country where the balance is used or to
select modes such as counting or percent.
The units and the order they appear in the display are as follows:
Troy ounce
Pound
Ounce (avoir)
Metric carat
Percent mode
Momme

Counting mode

Pennyweight
Gram
Grain
NewtonDensity(specific gravity)
Among the units, those available for the user have been set at the factory before
shipping. The unit can be selected in the function setting mode. The order of the units
available is the same as above, while skipping the units that are not available.
The unit “lb” is not available for the EJ-123, EJ-303 and EJ-54D2 models.
The unit “SG” is not available for the EJ-1202, EJ-3002 and EJ-54D2 models.
For details, refer to “12. SPECIFICATIONS”.
Note
It is possible to store only the units that will be actually used from the units
available. It is also possible to specify the unit that will be shown first when the
power is turned ON. For details, refer to “8.4. Storing Weighing Units”.
Conversion table
Units
Name
oz
Ounce (avoir)lbPound (UK)ozt
Troy ounce
ct
Metric carat
mom
Momme
dwt
PennyweightGN
Grain (UK)
t
tola
tl
tael (Hong Kong general, Singapore)tltael (Hong Kong jewelry)tltael (Taiwan)

Conversion to gram028.349523125 g
453.59237 g
031.1034768 g
000.2 g003.75 g
001.55517384 g
000.06479891 g
011.6638038 g
037.7994 g
037.4290 g
037.5 g“Newton” is the value calculated by “(weight in grams) x (9.80665 m/s2) / 1000”.
The unit “t (tola)” and three kinds of “tl (tael)” are for special versions only. Oneof them can be selected and installed at the factory.

17

5.4.

Selecting a Weighing Unit

Press theUNITS

key to select a unit.

The following sections are a description of
the three common units: g (gram mode), pcs(counting mode), and % (percent mode).

Each pressing switches the units
available in the order describedon the previous page.
STABLE indicator

ZERO

5.5.

0.000

Basic Operation (Gram Mode)

For the EJ-54D2, when the carat pan provided withthe balance is used, remove the weighing pan andplace the carat pan directly on the pan support.
1. Select a weighing unit.

Container

2. When the display does not show zero, press the
RE-ZERO key to set the display to zero.
Weighing pan
3. When using a tare (container), place the containeron the weighing pan, and press the RE-ZERO
key to subtract the tare weight.
4. Place the object to be weighed on the pan or in
the container.
Wait for the STABLE indicator to turn on andread the value.
When the display hold function is enabled in thefunction setting mode, the HOLD indicator turns on.
5. Remove the object from the pan.
The RE-ZERO key will zero the balance if
the weight is within ±2% of the weighing
capacity around the power-on zero point.
The ZERO indicatorturns on. When theweight exceeds +2% of the weighing
capacity, the balance is tared to zero. In thiscase the NET and ZERO indicators turn on.

NET
ZERO

0.000
Object to beweighedSTABLE indicatorNET060.003

Precautions during operation
Make sure that the STABLE indicator is on whenever reading or storing a value.
Do not press the keys with a sharp object such as a pencil.
Do not apply a shock or a load to the pan that is beyond the weighing capacity.
Keep the balance free from foreign objects such as dust or liquid.
Calibrate the balance periodically to maintain weighing accuracy.
(Refer to “7. CALIBRATION”.)

18

5.6.

Weighing Range (EJ-54D2 only)
The EJ-54D2 has two weighing ranges available as follows:
Range 1 (low range)…22 g×0.0002 g
Range 2 (high range)…52 g×0.001 g
Function settings available to select how the weighing range changes:
automatic range (rng 1) or manual range (rng 0).

Operation
Functionsetting

Description

Automatic range
 When the weight value exceeds the maximum value in the low
range, the weighing range automatically changes to the high range.
 When there is nothing on the weighing pan and the display shows zeroalong with the ZERO indicator and the balance becomes stableenough, the weighing range automatically changes from the high to the
low range.
When the ZERO indicator is not turned on or the taring operation is
rng 1
being
performed, the weighing range does not change. Press the(factory setting)
RE-ZERO key.
 When the RE-ZERO key is pressed and if the object on theweighing pan exceeds 2% of the weighing capacity, the balance istared to zero, but the weighing range does not change.
If the object is 2% of or less than the weighing capacity, the balancedisplays zero and clears the tare value. When the balance becomesstable enough, the weighing range automatically changes to the low
range.

rng 0

5.7.

Manual range
 Press the SAMPLE key when the display shows a weight value(neither counting nor % display). The weighing range changes tothe high range at any load.
 To change from the high to the low range, press the SAMPLE key
when there is nothing on the weighing pan and the display shows
zero along with the ZERO indicator.
When the ZERO indicator is not turned on or the taring operation is
being performed, the weighing range does not change. Press the
RE-ZERO key and then press the SAMPLE key.
If the balance is stable enough when the SAMPLE key ispressed, the weighing range changes to the low range.
 When the RE-ZERO key is pressed and if the object on the weighing
pan exceeds 2% of the weighing capacity, the balance is tared to zero.
If the object is 2% of or less than the weighing capacity, the balancedisplays zero and clears the tare value.
In either case above, the weighing range does not change.

Display Hold Function

In stable measurements, this function can hold the weight value to read it easily. The
function holds the value except in the zero band (band width: ±4d from the zero point,d=readability (scale interval or “division”)). The function releases the value when theweight value changes more than the value set in the function mode. Also, when the
RE-ZERO key is pressed, the display hold is canceled and display becomes zero.
Refer to the item “Hold” of “8.5. Function List”.
19

5.8.

Counting Mode (pcs)

The balance weighs the sample pieces and calculates the unit weight.
Using the sample unit weight, the balance counts the number of items in the sample.
As for the minimum unit weight acceptable, refer to the item “Umin” of “8.5. Function
List”.
Selecting the Counting Mode
1. Press the UNITS key to select0:pieces).(

Storing the Sample Unit Weight
2. Press the SAMPLE key to enter the sample unit
weight storing mode.

10 -3. To select the number of samples, press the
1SAMPLE key. It may be set to 5, 10, 25, 50, or 100.
4. Place a tare container on the weighing pan, andpress the RE-ZERO key. Confirm that theright side of the number of samples shows zero.

Switches the number of samples

25 -5. Place the number of samples specified on the pan.
In this example, 25 pieces.

Container

6. Press the PRINT key to calculate and store theunit weight. Remove the sample. The balance is set
to count objects with the unit weight.

Weighing pan

When the unit weight is too light to store, the display
shows lofor the moment and returns to theformer display. When the sample weight is light andthe counting error could become large, the balance
will request you to use a larger number of samples.
Place the displayed number of samples on the pan
and press the PRINT key to calculate and store
the unit weight. Refer to “Sample quantity error” and“Unit weight error” in “11.2.Error Codes”.

Confirm the display

ZERO

25 0

Samples(25 pcs)

Counting the Objects
7. Place the objects to be counted on the pan.
Counting Mode Using the ACAI Function
ACAITM (Automatic Counting Accuracy Improvement)
is a function that improves the accuracy of the unit
weight by increasing the number of samples as thecounting process proceeds.
8. After storing the unit weight at step 6, add a few
more samples on the pan. Then, the ACAI indicatorturns on. (Add more than three pieces. The ACAI
indicator will not turn on for the number of samples
beyond the ACAI range.)

To store

25
ACAI indicator
ACAI

25

9. The ACAI indicator will flash and the balance re-calculates the unit weight. Do not touchthe balance or samples on the pan until the ACAI indicator turns off.
20

10. Counting accuracy is improved when the ACAI indicator turns off. Each time the above
operation is performed, a more accurate unit weight will be obtained. There is no
definite upper limit of ACAI range for the number of samples exceeding 100. Try to add
a similar number of samples as that displayed.

5.9.

Percent Mode (%)

The balance displays the weight value in percentage compared to a reference (100%)weight.
Selecting the Percent Mode
1. Press the UNITS key to select %. (%:percent)0.00 %

Storing the Reference (100%) Weight
2. Press the SAMPLE key to enter the reference
weight storing mode.

3. Press the

RE-ZERO

100 -

%

100 0

%

key to display 100 0%.
ZERO

4. Place the sample to be set as the reference weighton the pan.

5. Press the PRINT key to store the reference
weight. Remove the sample.
When the reference weight is too light to store, thedisplay shows
for the moment and returns
to the former display.

Sample corresponding
to the 100% weight

Weighing pan
To store

100.00 %Object to be compared

Reading the Percentage
6. Place the object to be compared to the reference
weight on the pan. The displayed percentage isbased on 100% of the reference weight.

21

75.80 %

6. ACCUMULATION FUNCTION
This function counts the number of times objects are weighed, calculates the total mass
value and displays the number (accumulated count) and accumulated mass value.
Preset the item “totl” of the function list to use the accumulation function.
For the EJ-54D2, please note that the accumulation function is only available within therange of Range 1 (low range) when the weighing range is set to the manual range “rng0” in the function setting mode.
The accumulated count and accumulated mass value are stored in memory even if thepower to the balance is turned OFF.

6.1.

Indicators and Keys

The
indicator turns on when the accumulation data is stored.
The
indicator andturn on when the accumulated count or accumulated
mass value is displayed.
Operation keys are as follows:
The UNITS key
When the accumulation data is stored, pressing the UNITS key displays theweight value, accumulated count and accumulated mass value sequentially.
When the accumulation data is not stored, pressing the UNITS key switches thepreset units sequentially.
The RE-ZERO key
When the weight value is displayed, pressing the RE-ZERO key clears thedisplay to zero.
When the accumulated count or accumulated mass value is displayed, pressing the
RE-ZERO key resets the accumulation data to zero.
The SAMPLE key
Pressing the SAMPLE key adds the weight value to total under the following
conditions:
The weight value is stable and +5d above the zero band.
The accumulated count is less than 10000.
The accumulated mass value is less than 9999999.
The unit weight of the counting mode and the reference (100%) weight of the percent
mode cannot be stored when the accumulation function is used.

22

6.2.

Selecting a Weighing Unit

1. Press the UNITS key to select a unit to be
used in the accumulation function.
The unit cannot be changed after theaccumulation data is stored. To change the unit,
reset the accumulation data and then press the
UNITS key.
Note that multiple units cannot be used in theaccumulation function.

6.3.

Adding the Accumulation Data

ZERO

0.000

g

Unit
Weighing pan

ZERO

0.000

g

30.003g

2. Press the RE-ZERO key to set the display to zero.
3. Place the sample on the pan.

Sample4. Wait for the STABLE indicator to turn on.
Press the SAMPLE key to accumulate theweight value. The
indicator turns on.
5. Repeat steps 2 to 4 to weighother samples.
The
indicator flashes once
for each sample.

6.4.

Displaying the
Accumulation Data

6. When the UNITS key ispressed, the weight value,
accumulated count andaccumulated mass value aredisplayed sequentially.
The
indicator andturn on when the accumulated
count or accumulated mass
value is displayed.

6.5.

When accumulating data is stored,
theindicator turns on.
M+

Weight value(
and unit)
Accumulated count(and)

Accumulated mass
( ,and unit)

030.003 g
M+

3

M+

90.009g

Deleting the Accumulation Data

1. Display the accumulated count or accumulated mass value.
2. Press the RE-ZERO key to reset the accumulated count and accumulated mass value tozero. The
indicator andturn off and the state of the balance returns to step
1 on this page.
When the item “Unit” of the function list is changed, the accumulation data is reset to
zero.

23

7. CALIBRATIONThis function adjusts the balance for accurate weighing.
Perform calibration in the following cases:
When the balance is first used.
When the balance has been moved.
For regular calibration.
Calibration (CAL) switch
Calibration (CAL) switch cover

7.1.

Calibration Using a Weight

Prepare a calibration weight (sold separately) in advance.

Press and holdthe CAL switch

1. Warm up the balance for at least half an hour with nothing
on the pan.

Cal

2. Press and hold the calibration (CAL) switch until
Cal
appears, and release the switch.

Release the CAL switch

Cal 0

3. The balance displays Cal 0 .
To change the calibration weight value, proceed to step 4.
To use the calibration weight value in the balance memory,
proceed to step 5.

0100.000

4. Press the SAMPLE key. The display shows thecalibration weight value in “grams” that is stored in thebalance. Use the following keys to change the value.
SAMPLE key ......To select the digit to be changed (flashing).

Set the weight using
the relevant keys

RE-ZERO key ....To set the value of the digit selected.
PRINT key...........To store the value and return to step 3.
UNITS key...........To cancel the value and return to step 3.
Use a calibration weight more than 2/3 of the capacity.

Cal 0
With nothing
on the pan

5. At step 3, press the PRINT key to weigh thezero-point value. Do not touch the pan during weighing.
When the zero calibration is completed, the display willshow the calibration weight value.
To perform the zero calibration only and finish theprocedure, press the UNITS key. After displaying
end, the balance turns off.
6. Place a calibration weight with the same value as displayedon the pan.
Press the PRINT key to weigh it. Do not touch the panduring weighing.
24

To store

Cal 0
100.000
Calibration
weight7.

end
appears.
Remove the weight from the pan.

To store

When the GLP output (function setting “info 1” or“info 2”) is selected, glp
appears. The
calibration report is output and end
appearsagain. Then the balance turns off.
Note
The value set in step 4 is stored in memory even
if the power is turned OFF.
If the balance is to be moved to other places, set
the gravity acceleration value of the area where
the calibration using a weight is to be performed,
and calibrate the balance according to theprocedure above. Refer to the next section to set
the gravity acceleration value.

7.2.

100.000
0end000
GLP output

glp

end000The balance turns off.

Gravity Acceleration Correction

When the balance is first used or has been moved to a different place, it should becalibrated using a calibration weight. But if a calibration weight is not available, thegravity acceleration correction will compensate the balance. Change the gravity
acceleration value of the balance to the value of the area where the balance will be
used. Refer to the gravity acceleration map appended to the end of this manual.
Note
Gravity acceleration correction is not required when
the balance is calibrated using a calibration weightat the place where the balance is to be used.

1. Press and hold the calibration (CAL) switch until
Cal
appears, and release the switch.
2. The balance displays

Cal 0

.

3. Press the RE-ZERO key. The display shows thegravity acceleration value stored in the balance. Use thefollowing keys to change the value.

Press and holdthe CAL switch

Cal
Release the CAL switch

Cal 0

SAMPLE key ......To select the digit to be changed(flashing).

9.7985

RE-ZERO key ....To set the value of the digit selected.

Set the value using therelevant keys

PRINT key...........To store the value and return to step 2.
UNITS

To storekey...........To cancel the value and return to step 2.

4. After setting the value, press the PRINT
Cal 0
appears after end.

key.

5. If it is necessary to calibrate the balance using a calibration
weight, go to step 4 of “7.1. Calibration Using a Weight”.
To finish the setting, press the UNITS key.
6. The balance turns off.

end
Cal 0
The balance turns off.

25

8. FUNCTIONS
8.1.

Key Operation
The ON:OFFbalance off.

key to cancel the operation and turn the

Item key to select a class and an item.
In the weighing mode, press and hold the key to enter thefunction setting mode.
The enter key to proceed to the selected class,store the setting per class and go to the next class.
The parameter key to select a parameter.
The cancel key to cancel the operation, and proceed to
the next class or return to the weighing mode.

8.2.

Entering the Function Setting ModeIn the weighing mode, press and hold the SAMPLE key.
After displaying the software version p-x.xx , the balance
enters the function setting mode and displays func .
Each time the SAMPLE key is pressed, the class appears
one after another.
Once a class is selected, the items areavailable for selection. (Refer to “8.5. Function List”.)

Press and holdp-x.xxfunc
Each pressing switches
the classes

Unit
•
•
•
Set using therelevant keys

26

8.3.

Setting Example

To set auto power-off function to “Enabled”, and the ACAI function to “Disabled”.
1. Press and hold the

SAMPLE

key to display

func

.

Press and holdfunc
2. Press the

PRINT

key to displaypoff 0 .

poff 03. Press the

RE-ZERO

key to displaypoff 1 .
Each pressing switches
the parameter

4. Press the SAMPLE
aCai 1 .

key several times to displaypoff 1
To confirm

aCai 1
5. Press the

RE-ZERO

key to selectaCai 0 .
Each pressing switches
the parameter

6. Press the PRINT key to store the parameters.
Unitappears after end.

aCai 0To storeend
7. Press the

UNITS

key to turn the balance off.

Unit
The balance turns off.

27

8.4.

Storing Weighing Units

It is possible to store the weighing units that will actually be used from the units
available. For the units available, refer to “5.3. Units”.
Select and store the weighing units as described below:
1. Press and hold the

SAMPLE

2. Press the

SAMPLE

3. Press the

PRINT

4. Press thestored.

SAMPLEfunc

key to display

key to display

Unit

Press and hold
.

.

func
Unit

key.

key to display a weighing unit to be

Unit
Each pressing switches
the units available
in the order describedin “5.3.Units”.

5. Press the RE-ZERO key to select the weighing unit. The
selected weighing unit is shown with the STABLE indicator.

Unit

At this stage, the weighing unit is not stored in memory.

To select
To store

6. Repeat steps 4. and 5. to select all weighing units to be used.

7. Press the PRINT key to store the selected weighing
units in memory. id
appears after end
.

end
id

8. Press the

UNITS

key to turn the balance off.

Note
When the balance is turned ON, it starts with the unit that was
selected first in step 5.

28

The balance turns off.

8.5.

Function List

ParamDescriptioneter 0 Auto power-off disabledpoff
Automatically power OFF
Auto power-off
1 Auto power-off enabled
0 Manual range
Function to change therngweighing range
Weighing range
 1 Automatic range(EJ-54D2 only)
0 Fast / sensitive
Cond
1
Software filtering
Response
2 Slow / stable
The STABLE indicator
0 Judge precisely (±0.5d)
turns on when the
5t-b
1
(±1d)
fluctuation interval of theStability band width
weighing display is less
2 Judge moderately (±2d)
than the reference value.
Function to keep the
0 Disabledtrc
display value at zero by
Zero tracking
 1 Enabledtracking the zero point
 0 Point (.)
pnt
Decimal separator
Decimal point
1 Comma (,)
0 Command and stream modes 1 Command mode and PRINT key
Command mode, PRINT key
Auto-print A: + data
prt
2 and auto-print A
Auto-print B: +/- data
Data output mode
mode, PRINT key
3 Commandand auto-print B
4
Command mode onlyfunc
 0 No pause (general equipment) Interval between
pU5e
Data output pause
1 1.6 seconds (for AD-8121B) continuous data 0 No output
info
1 AD-8127/AD-8121B format (*) GLP output format
GLP output
2 General format
 0 2400 bps
1 4800 bps
bp5
Baud rate
2 9600 bps
3 1200 bps
 0 7 bits, even parity
btpr
1 7 bits, odd parity
Data and parity
2 8 bits, non parity
0 ACAI disabledaCai
When “0” is set, no additional
samples required.
ACAI function
 1 ACAI enabled
 0 1dd = readability (scale
Umin
1 1/10dinterval or “division”)
Minimum unit weight
2 Total sample weight ≥5d (**)
 0 10 pcs
1 25 pcs
5mpl
The number of samples shown first when
2 50 pcs
entered into the unit weight storing mode
Number of samples
3 100 pcs
4 5 pcs
 : Factory setting

Class

Item

29

ParamDescriptioneter 0 Disabled
d = readability (scale interval or“division”)
1 Hold. Limit : ±10d
Hold
Hold:
Holds stable weight values
2 Hold. Limit : ±50d
Display hold function
except in the zero band.
3 Hold. Limit : ±100d When the value changes more than
4 Hold. Limit : ±200d the limit, the display hold is canceled.
 0 Disabled
totl
func Accumulation function
1 Enabled
0 Always off
To control how the LCD
1 Turns off after 5 seconds
backlight turns off after the
2 Turns off after 10 seconds STABLE indicator turns on.
ltUp
LCD backlight control  3 Turns off after 30 seconds Weight changes or key
4 Turns off after 60 seconds operation will turn thebacklight on.
5 Always on

Class

Item

Unit

Weighing units to be
displayed

Sets to display units

id

ID number for GLP output

Sets the ID number

Refer to “8.4. Storing
Weighing Units”.
Refer to “10. ID NUMBER
AND GLP”.

 : Factory setting* : When the AD-8127/AD-8121B format is selected, the interval between continuous datais 1.6 seconds regardless of the setting “pU5e”.
:** Even if the weight display is “5d”, the sample weight may not be accepted. This isbecause the weight display data is rounded off internally.

30

9. OPTIONS
The following options are available for the EJ-123, EJ-303, EJ-1202, EJ-3002 andEJ-54D2 balances:
EJ-02
USB interface
EJ-03
RS-232C serial interface
EJ-13
Density determination kit for EJ-123 / EJ-303
Note
The EJ-123, EJ-303, EJ-1202, EJ-3002 and EJ-54D2 balances have only one option
slot for a communications interface. Either the EJ-02 USB interface or the EJ-03
RS-232C serial interface can be installed at one time.

9.1.

EJ-02 USB Interface

The EJ-02 allows an EJ-123, EJ-303, EJ-1202, EJ-3002 or EJ-54D2 balance to beconnected to a personal computer with the USB interface.
The EJ-02 can transmit the weight value (numerical value only) unidirectionally to apersonal computer via USB.
The EJ-02 can transmit the weight value (numerical value only) directly to application
software such as Microsoft Excel, Word and Notepad.
A special USB software driver is not necessary.
The EJ-02 cannot be used for bidirectional communication.
Note
A commercially available type A-B USB cable isrequired.

Option slot for
EJ-02 / EJ-03
Push down andremove the coverInstalling the EJ-02

Step 2

1. Turn the balance off and disconnect the AC
adapter if used.
2. Remove the cover of the option slot on the rearby pressing and lowering it down.

EJ-02

3. Connect the connector in the slot to the EJ-02
unit and insert it into the slot.
4. Secure the EJ-02 with the screws supplied withthe option.

31

Step 3Connector inside
the option slot

EJ-02

9.2.

EJ-03 RS-232C Serial Interface

The EJ-03 allows an EJ-123, EJ-303, EJ-1202, EJ-3002 or EJ-54D2 balance to beconnected to a printer or a personal computer using the RS-232C serial interface.
The RS-232C serial interface has the following four modes:
Stream mode...................Outputs data continuously.
Key mode..........................Outputs data when the PRINT key is pressed.
Auto-print mode .............Outputs data which meets the conditions of auto-print.
Command mode ............Controls the balance using commands from a personal
computer.
Set the parameters of the data format (bp5 and btpr) and data output mode (prt),
as necessary.
Use a D-Sub 9-pin cable (straight type) to connect the balance to a personal
computer.
Optional cable: AX-KO2466-200 D-Sub 9-pin - D-Sub 9-pin cable (2 m)

Installing the EJ-03
1. Turn the balance off and disconnect the AC
adapter if used.
2. Remove the cover of the option slot on the rearby pressing and lowering it down.
3. Connect the connector in the slot to the EJ-03
unit and insert it into the slot.
4. Secure the EJ-03 with the screws supplied withthe option.

Option slot for
EJ-02 / EJ-03
Push down andremove the cover

Step 2

EJ-03

Step 3

EJ-03

Connector inside
the option slot

Interface Specifications (Connector type:D-Sub 9-pin[male])Transmission system
Transmission form
Data format

LSB
0

1

EIA RS-232C
Asynchronous, bidirectional, half-duplex
Baud rate: 1200, 2400, 4800, 9600 bps
Data:
7 bits + parity 1bit (even or odd) or 8 bits (non-parity)
Start bit:
1 bit
Stop bit:
1 bit
Code:
ASCII
Terminator: CRLF (CR: 0Dh, LF: 0Ah)

2

3

4

5

MSB
6

1 (-15V ~ -5V)
0 (+5V ~ +15V)
Stop bit
Parity bit
Data bit
Start bit32

Pin Connections
D-Sub 9-pin male connector
1
2
3
4
5
6
7
8
9

Inside of the balance

N.C.
Transmit data
Receive data
N.C.
Signal ground
Data set ready
Request to send
Clear to send
N.C.

The interface is designated as DCE (Data Communication Equipment).

9.3.

Data Format
S

T

Header

,

+

0

0

0

0

.

0

Data
Separator

00

g CR LF
Unit

There are four types of headers:ST :Stable weighing data (including % data)
QT :Stable counting data
US :Unstable weighing data (including counting and % data)OL :Out of weighing range (Over)The data is normally 9 digits including a decimal point and a sign.
There are 14 types of units:g : Weighing data “g”
P C : Counting data “pcs”% : Percentage data “%”o z : Weighing data “decimal ounce”
l b : Weighing data “decimal pound”
o z t : Weighing data “troy ounce”
c t : Weighing data “carat”
m o m : Weighing data “momme”
d w t : Weighing data “penny weight”
GN : Weighing data “grain”
N : Force data “Newton”
t l : Weighing data “tael”
t : Weighing data “tola”
D S : Calculated density (specific gravity) value
The terminator is always CRLF.

33

Terminator(“ ” : Space)Example of output data:
Weighing data “gram”

S T , + 0 0 1 2

.

3 4 5

g CR LF

Counting data

Q T , + 0 0 0 1 2 3 4 5

P C CR LF

Percentage data

S T , + 0 0 0 1 2.

3 4% CR LF

Out of range “gram” (+)

O L, + 9 9 9 9

9 9 9

g CR LF

Out of range “pcs” (-)

O L,- 9 9 9 9 9 9 9 9

P C CR LF.

Data Output Mode
Stream mode
Set the function to “prt 0”.
The balance outputs the current display data. The data update rate is approximately 10
times per second. This rate is the same as the display update.
The balance does not output data while it is in the setting mode.
Key mode
Set the function to “prt 1, 2 or 3”.
When the PRINT key is pressed while the weight value is stable (the STABLE
indicator is on), the balance outputs the data. When the data is output, the display will
flash once.
Auto-print mode A
Set the function to “prt 2”.
The balance outputs the weight value when the display is stable (the STABLE indicatoris on) and the data is greater than +4d.
The next output can be obtained after the display returns below +4d.
Auto-print mode B
Set the function to “prt 3”.
The balance outputs the weight value when the display is stable (the STABLE indicator ison) and the data is greater than +4d or less than -4d.
The next output can be obtained after the display returns between -4d and +4d.

Command ModeIn the command mode, the balance is controlled by commands that come from apersonal computer.
Command List
Command to request the current weighing data.
Command

Q CR LF

Reply

S T , + 0 0 1 2

.

3 4 5

Command to zero or tare the balance (same as theCommand

Z CR LF

Reply

Z CR LF

RE-ZERO

Command to change the weighing units (same as theCommand

U CR LF

Reply

U CR LF
34

g CR LF

UNITS

key).

key).

9.4.

EJ-13 Density Determination Kit

Using this option and calculation program,the balance can determine the density(specific gravity) of a sample.
EJ-13 is for use with the EJ-123 / EJ-303.

Breeze break
Weighing pan

EJ-13 Installation
Remove the weighing pan and the fixing
frame.
Install the beaker stand on the balance
and attach the pan stand to the pan
support of the balance.

Fixing frame

Remove the breeze break that can not be
used while using the density
determination kit.

Sample weighing pan
Upper pan to weigh in air
Pan standPlace a beaker filled with water on the
beaker stand and place the sample
weighing pan on top of the pan stand.

Lower pan to weigh in water
Beaker standPan support

Density (Specific Gravity) Measurement
The density for a liquid can be set two ways.
One is to set the water temperature and theother is to set the density value directly.
The factory setting for density of a liquid is
25 °C as water temperature (the density
value, ρ = 0.99704 (g/cm3), is used for
calculation).

A : To weigh A in air.

The result is shown with three decimal places.
The density (specific gravity) is calculated by
the following formula.
AS=xρ
S: Density (specific gravity) of a sample
A-B
A: Weight in air
B: Weight in liquid
ρ: Density of liquid (water)

L : To weigh B in water.

Change the Function Table
Selecting a way to set the density of a liquid
Select the liquid density input method from the function table below.
The function table is available only when the density measurement mode is selected.
Parameter 0 Water temperature
ldin
func
Liquid density input
1 Liquid density
 : Factory setting

Class

Item

35

Description
The way to input liquid density.

Entering the density of a liquid (ldin = 0)
1. Press the

UNITS

key to selectSG indicator

SG .
A

SG

2. Press and hold the UNITS key to display the liquiddensity input mode. The display will show the watertemperature currently set (factory setting: 25 °C).

0.000

3. Using the RE-ZERO (to increment the value) andSAMPLE keys (to shift the selected digit), set thevalue and press the PRINT key to store.

SGt---25

To cancel the setting procedure and return to thedensity measuring mode, press the UNITS key.
The input value is not stored.
The relation between the water temperature anddensity is shown below.
°C
0
10
20
30
40
50
60
70
80
90

+0
0.99984
0.99970
0.99820
0.99565
0.992220.98804
0.983200.97777
0.971800.96532+10.999900.99961
0.99799
0.99534
0.99183
0.98758
0.98268
0.977200.971170.96465+20.99994
0.99949
0.99777
0.99503
0.991440.987120.98216
0.976620.970540.96397+3
0.999960.99938
0.997540.99470
0.99104
0.98665
0.98163
0.97603
0.96991
0.96328+4
0.99997
0.99924
0.99730
0.99437
0.99063
0.98618
0.981100.975440.96927
0.96259+50.999960.999100.99704
0.994030.990210.985700.98055
0.974850.96862
0.96190+60.99994
0.99894
0.99678
0.99368
0.98979
0.985210.98001
0.974250.96797
0.96120+70.999900.99877
0.99651
0.99333
0.989360.98471
0.97946
0.973640.967310.96050+80.99985
0.99860
0.99623
0.99297
0.988930.984220.978900.97303
0.966650.95979+90.99978
0.998410.99594
0.99259
0.98849
0.98371
0.97834
0.972420.96600
0.95906

Entering the density of a liquid directly (ldin = 1)
1. Press the

UNITS

key to selectSG .

2. Press and hold the UNITS key to display the liquiddensity input mode. The display will show the liquiddensity currently set (factory setting: 1.0000 g/cm3)
3. Using the RE-ZERO (to increment the value) andSAMPLE keys (to shift the selected digit), set thevalue and press the PRINT key to store.
To cancel the setting procedure and return to thedensity measuring mode, press the UNITS key. The
input value is not stored.

36

SG

d 1.0000

Example of Density Measurement
Selecting the density measurement mode
1. Press the

UNITS

key to selectSG

Measuring weight in air.

.

SG indicator

The weighing unit is “g”.
The display shows that A blinks and thebalance is measuring the weight in air.

A

SG

A

SG

0.000

When the display does not show zero, press the
RE-ZERO key to set the display to zero.

20.0002. Place a sample on the upper pan.
3. Wait for the STABLE indicator to be displayed andpress the SAMPLE key to store the weight in air.
4. The display shows that L blinks and the balancestarts to measure the weight in water.

Measuring weight in water.
L

SG

L

SG

20.0005. Place the sample on the lower pan in water.
Adjust the amount of water so that the sample isabout 10 mm below the water surface.

17.510

6. Wait for the STABLE indicator to be displayed andpress the SAMPLE key. Then the balance reads
the weight in water and shows the density (specificgravity) of the sample.

SG

7. To continue the density measurement, press
the SAMPLE key again. To exit thismeasurement, press the UNITS key.

A

: To weigh the sample in air.

L: To weigh the sample in water.

37

8.008

10. ID NUMBER AND GLPThe ID number is used to identify the balance when Good Laboratory Practice (GLP) is
used.
The ID number is stored in memory even if the power to the balance is turned OFF.
The following GLP data is transmitted to a printer or a personal computer using theoptional RS-232C serial interface.
The result of calibration (“Calibration report”)
The result of calibration test (“Calibration test report”)
The “Title block” and “End block” for GLP data
The GLP output format includes the balance manufacturer name, model number, serial
number, ID number and space for a signature.
By using the AD-8127/AD-8121B, printing out dates and times is possible (GLP output
format info = 1).

10.1. Setting the ID Number
1. Press and hold the SAMPLE key to display func
2. Press the SAMPLE key several times to display id
3. Press the PRINT key. Enter the ID number using thefollowing keys.
SAMPLE key .......... To select the digit to be changed(flashing).
RE-ZERO key ........ To set the character of the digit
selected. Refer to the table below for
the “Display Character Set”.
PRINT key ............... To store the value and proceed to
the next step.
UNITS key ............... To cancel the value and proceed to
the next step.
4. When the above operation has been completed, func
appears after end.
5. Press the UNITS key to turn the balance off.

Press and hold

.
.

func
Press several
times

id
000000Set using the relevant keys

end idfunc
The balance turns off.

Display Character Set
0 1 2 3 4 5 6 7 8 9 A B C D E F GH I J K L MNO P QR S T U VWX Y Z
0 1 2 3 4 5 6 7 8 9 - _ a b C d e f g H i j k l m n o p q r s t U v w x y z“ ” : Space
38

10.2. GLP Report
To output the GLP report to the AD-8127 printer, set the function to “info 1” andset the printing mode of the printer to DUMP.
To output the GLP report to the AD-8121B printer, set the function to “info 1”
and set the printer to MODE 3.
To output the GLP report to a personal computer, set the function to “info 2” and“pU5e 0” .

Calibration Report
Perform calibration using a weight. Then the balance will output a calibration report.
1. Perform calibration according to “7.1. Calibration
Using a Weight”.
2.

end
appears when the calibration has
been completed.

3.

glp
output.

4.

Calibration(Refer to “7.CALIBRATION”)

end

appears and the calibration report isend
appears again. Remove the weight.
The balance turns off.

GLP output

glp
end

The balance turns off.
AD-8127/AD-8121B format “info 1”___________A_&_D
MODEL_____EJ-123
S/N____Q12345678
ID________ABCDEF
DATE__2013/11/14
TIME____02:53:21
CALIBRATED(EXT.)
CAL.WEIGHT_____+100.000__g
SIGNATURE

General format “info 2”

Manufacturer
Model
Serial number
ID number
Date
Time
Calibration type
Calibration weight
Signature-_-_-_-_-_-_-_-_~ : Space, ASCII 20h
CR : Carriage return, ASCII 0Dh
LF : Line feed, ASCII 04Ah

39~~~~~~~~~~~ A ~ & ~ D <CRLF>
MODEL~~~~~EJ-123<CRLF>
S/N~~~~Q12345678<CRLF>
ID~~~~~~~~ABCDEF<CRLF>
DATE<CRLF><CRLF>
TIME<CRLF><CRLF>CALIBRATED(EXT.)<CRLF>
CAL.WEIGHT<CRLF>~~~~~+100.000~~g<CRLF>
SIGNATURE<CRLF><CRLF><CRLF>----------------<CRLF><CRLF><CRLF>

Calibration Test Report
The calibration test mode is used to compare a calibration test weight with thecalibration test data weighed by the balance.
This test does not perform calibration and this mode is available even after sealing thecalibration (CAL) switch.
Press and hold both keys.
1. Press and hold the SAMPLE and PRINT keys
until CC
appears, and release both keys.

CC Pressing and holding the calibration (CAL) switch will
also display CC
after Cal. Immediately
release the CAL switch while CC
is displayed.

Release both keys.

2.

CC 0

CC 0

appears.

3. If necessary, change the value of the calibration test
weight according to step 4 of “7.1. Calibration Using a
Weight”.
4. With nothing on the pan, press the PRINT key. The
zero point is measured and the weight value isdisplayed for a few seconds. Then, the display shows
the value of the calibration test weight.
5. Place a weight of the same value as displayed on the
pan and press the PRINT key to weigh it. The
weight value is displayed for a few seconds.
6.

end

7.

glp
appears and the calibration test
report is output.

8.

end
appears again.
Remove the weight.
The balance turns off.

appears.

To output calibration test report

0.000
100.000
To weigh

100.001
end
glp
end
The balance turns off.

40

AD-8127/AD-8121B format “info 1”___________A_&_D
MODEL_____EJ-123
S/N____Q12345678
ID________ABCDEF
DATE__2013/11/14
TIME____02:53:21
CAL.TEST(EXT.)ACTUAL________0.000__g_____+100.001__g
TARGET_____+100.000__g
SIGNATURE

General format “info 2”~~~~~~~~~~~ A ~ & ~ D <CRLF>
MODEL~~~~~EJ-123<CRLF>
S/N~~~~Q12345678<CRLF>
ID~~~~~~~~ABCDEF<CRLF>
DATE<CRLF><CRLF>
TIME<CRLF><CRLF>CAL.TEST(EXT.)<CRLF>
ACTUAL<CRLF>~~~~~~~~0.000~~g<CRLF>~~~~~+100.001~~g<CRLF>
TARGET<CRLF>~~~~~+100.000~~g<CRLF>
SIGNATURE<CRLF><CRLF><CRLF>----------------<CRLF><CRLF><CRLF>

Manufacturer
Model
Serial number
ID number
Date
Time
Calibration test type
Zero value
Target weight value
Target weight
Signature-_-_-_-_-_-_-_-_~ : Space, ASCII 20h
CR : Carriage return, ASCII 0Dh
LF : Line feed, ASCII 04Ah

Outputting the “Title block” and “End block”
When weight values are recorded as the GLP report, the “Title block” and “End block”
are added at the beginning and at the end of a group of weight values.

0.000“Title block”
1. Press and hold the PRINT key.
Release the PRINT key when
5tart
is displayed. Thebalance outputs the “Title block”.

Press and hold

2. Press the PRINT key or selectthe auto-print mode to output theweight values.

To output “Title block”

5tart
end
12.345•

To output weight values •••23.45641

“End block”
3. Press and hold the PRINT key.
Release the PRINT key when
recendis displayed. Thebalance outputs the “End block”.
4.

Press and holdrecendTo output “End block”

end
appears.
The balance returns to theweighing mode.

end
The balance returns to
the weighing mode.

AD-8127/AD-8121B format “info 1”___________A_&_D
MODEL_____EJ-123
S/N____Q12345678
ID_______ABCDEF
DATE__2013/11/14
START
TIME____02:53:21

Title block
Manufacturer
Model
Serial number
ID number
Date
Start time

ST,+0012.345__g
ST,+0023.456__g
ST,+0034.567__g
ST,+0045.678__g
END
TIME____02:55:21
SIGNATURE-_-_-_-_-_-_-_-_

Weight value

End time
Signature

End block~ : Space, ASCII 20h
CR : Carriage return, ASCII 0Dh
LF : Line feed, ASCII 04Ah

42

General format “info 2”~~~~~~~~~~~ A ~ & ~ D <CRLF>
MODEL~~~~~EJ-123<CRLF>
S/N~~~~Q12345678<CRLF>
ID~~~~~~~~ABCDEF<CRLF>
DATE<CRLF><CRLF>START<CRLF>
TIME<CRLF><CRLF><CRLF>
ST,+0012.345~~g<CRLF>
ST,+0023.456~~g<CRLF>
ST,+0034.567~~g<CRLF>
ST,+0045.678~~g<CRLF><CRLF>
END<CRLF>
TIME<CRLF><CRLF>
SIGNATURE<CRLF><CRLF><CRLF>----------------<CRLF><CRLF><CRLF>

11. MAINTENANCE
11.1. Notes on Maintenance
Avoid mechanical shock to the balance.
Do not disassemble the balance.
Use the original package for transportation.
Avoid dust and water so that the balance weighs correctly. Protect the internal parts
from liquid spills and excessive dust.

Cleaning the Balance
Do not use organic solvents or chemical cloth to clean the balance.
Balancemain unit

To clean the balance main unit, use a lint free soft clothmoistened with a neutral detergent.

Breeze break

The parts of the breeze break have an antistatic coating.
Clean the breeze break with a dry lint free soft cloth.
Cleaning it repeatedly with a cloth moistened with a neutral
detergent or water, or washing it with water may reduce theantistatic effect of the coating.

To clean the area around the pan support, refer to the illustration below.
Breeze break
Weighing pan
Pan support

Pan support
Hook
Fixing frame
HookFixing frame

Leveling footEJ-1202 / EJ-3002

EJ-123 / EJ-303

Breeze breakSample weighing pan

Upper pan to weigh in air
Pan standLower pan to weigh in water

Weighing pan

Beaker standPan support

Pan support

EJ-54D2
43

11.2. Error Codes
Overload error

eeeeeeWarning to indicate that an object beyond the balance
capacity has been placed on the pan.
Remove the object from the pan.

Range exceeding error--eWarning to indicate that the balance has detected an
excessive upward force.
Check if there is anything trapped under the edge of theweighing pan. There is a possibility that the weight sensor
itself may have a failure.

Unit / 100% weight errorlo

The sample weight is too light to be used as the unit weight inthe counting mode or 100% reference weight in the % mode.

Sample quantity error

10 25 50 100 -When the sample weight is light and the counting error could
become large, the balance will request you to use larger
number of samples.
Place the displayed number of samples on the pan and press
the PRINT key to store the unit weight.
Note: Pressing the PRINT key without adding samples
is possible, but that may reduce the counting
accuracy.
When starting from the 100 samples, 100 - may
be displayed if the sample weight is light. In thiscase, press the PRINT key without adding any
samples.
When “aCai 0” (ACAI disabled) or “Umin 2” isselected, this error will not appear.

CAL error-Cal eWarning to indicate that calibration has been canceled
because the calibration weight is too light.
Check the weighing pan and the calibration weight.

Battery error

lb0
Hb0

Warning to show that the batteries are exhausted.
Replace the batteries with new ones or use the AC adapter.
Warning to show that the battery voltage is too high.
Check the batteries.

AC adapter error

Hb1
lb1

Warning to show that the output voltage of an AC adapter is
too high. Check if the AC adapter is the correct type.
Warning to show that the output voltage of an AC adapter is
too low. Check if the AC adapter is the correct type.
44

Stability error

error1

Warning to indicate that the weight value is not stable and thebalance cannot display it.
Prevent vibration and drafts. Press the UNITS key toreturn to the weighing mode.

Internal errors (# is a number except 1.)
The balance detects an error state in internal processing.
With nothing on the weighing pan, turn the power OFF andON again. If the error persists, request service.

error#• Error 3: EEPROM (non-volatile memory) failure• Error 5: Mass sensor failure• Error 6: Temperature sensor failure• Error 7: Voltage detection unit failure

If you cannot resolve an error or other errors occur, request service from the store
where you purchased the balance or from your local A&D dealer.

45

12.1. Generals

12. SPECIFICATIONS

MODELWeight capacity
Readability
Repeatability (Standard deviation)
Linearity
Sensitivity drift
Number of samples
Max. count *Min. unit weight *% readability
Min. 100 % weight

EJ-123
EJ-303120 g
310 g
0.001 g0.001 g0.003 g0.003 g±0.003 g±0.003 g±20 ppm / °C (10 °C to 30 °C / 50 °F to 86 °F)
5, 10, 25, 50 or 100 pieces
120,000 pcs
310,000 pcs
0.001 g0.01 %
0.1 g
7-segment LCD with backlight
Display(Character height 16 mm)
Display update
10 times per second
Operating temperature and
10 °C to 30 °C / 50 °F to 86 °F,
humidity range
85 %R.H. or less (non-condensing)Power supply
AC adapter or 4 x size “AA” batteries
Approximately 80 hours
Battery operation(backlight off, alkaline batteries)
Weighing pan size
110 mm φ
WeightApproximately 1160 g
Calibration weight (factory setting)
100 g
300 g
* : In case of “Umin 0” (factory setting)46

MODEL
Weight capacity
Readability
Repeatability (Standard deviation)
Linearity
Sensitivity drift
Number of samples
Max. count *Min. unit weight *% readability
Min. 100 % weight

EJ-1202
EJ-3002
1200 g
3100 g0.01 g0.01 g0.03 g0.03 g±0.03 g±0.03 g
±20 ppm / °C (10 °C to 30 °C / 50 °F to 86 °F)
5, 10, 25, 50 or 100 pieces
120,000 pcs
310,000 pcs
0.01 g0.01 %
1g
7 segment LCD with backlight
Display(Character height 16 mm)
Display update
10 times per second
Operating temperature and
10 °C to 30 °C / 50 °F to 86 °F,
humidity range
85 %R.H. or less (non-condensing)Power supply
AC adapter or 4 x size “AA” batteries
Approximately 80 hours
Battery operation(backlight off, alkaline batteries)
Weighing pan size
127 mm x 140 mm
WeightApproximately 1490 g
Calibration weight (factory setting)1000 g3000 g* : In case of “Umin 0” (factory setting)
MODEL
Weighing capacity
Readability
Repeatability (standard deviation)
Linearity
Sensitivity drift
Number of samples
Max. count *Min. unit weight *% readability
Min. 100% weight

EJ-54D2

22 g
52 g
0.0002 g
0.001 g0.0004 g
0.001 g±0.0006 g±0.001 g±20 ppm / °C (10 °C to 30 °C / 50 °F to 86 °F)
5, 10, 25, 50 or 100 pieces
260,000 pcs
0.0002 g
0.01%
0.02 g7-segment LCD with backlight
Display(Character height 16 mm)
Display update
10 times per second
10 °C to 30 °C / 50 °F to 86 °F,
Operating temperature andhumidity range
85%R.H. or less (non-condensing)Power supply
AC adapter or 4 x size “AA” batteries
Approximately 70 hours
Battery operation(backlight off, alkaline batteries)
Weighing pan size
50 mm φWeightApproximately 1020 g
Calibration weight (factory setting)
50 g* : In case of “Umin 0” (factory setting)47

12.2. Other Weighing Units
MODEL
EJ-123
EJ-303
EJ-1202 EJ-3002
EJ-54D2
Capacity
4.23290 10.93495 42.3290 109.3495 0.77603 1.83425
oz
Min. display 0.00005
0.00005
0.00050.00050.00001 0.00005
Capacity--------2.64555 6.83435--------lb
Min. display--------0.00005 0.00005--------Capacity
3.858109.96675 38.5810 99.6675 0.70732 1.67185
ozt
Min. display 0.00005
0.00005
0.00050.00050.00001 0.00005
Capacity
600.000 1550.000
6000.00 15500.00 110.000 260.000
ct
Min. display 0.005
0.005
0.05
0.05
0.001
0.005
Capacity
32.0000
82.6665 320.000 826.665
5.866713.8665
mom
Min. display
0.00050.00050.005
0.005
0.00010.0005
Capacity
77.162
199.335
771.62 1993.35 14.1464
33.437dwt
Min. display 0.001
0.001
0.01
0.01
0.00020.001
Capacity
1851.884784.04
18518.8 47840.4 339.510
802.48
GN
Min. display
0.02
0.02
0.2
0.2
0.005
0.02
Capacity
10.2882
26.5780 102.882 265.780 1.88618
4.4582
tola
Min. display
0.00010.00010.001
0.001
0.000020.0001
Capacity
3.174658.20120 31.7465 82.0120 0.58202 1.37570
tl (HG)**
Min. display 0.00005
0.00005
0.00050.00050.00001 0.00005
Capacity
3.20605
8.28235 32.0605 82.8235 0.58778 1.38930
tl (HJ)**
Min. display 0.00005
0.00005
0.00050.00050.00001 0.00005
Capacity
3.20000
8.26665 32.0000 82.6665 0.58667 1.38665
tl (T)**
Min. display 0.00005
0.00005
0.00050.00050.00001 0.00005**The unit “t (tola)” and three kinds of “tl (tael)” are for special versions only andone of them will be available.
tl (HG): Hong Kong General / Singapore taeltl (HJ): Hong Kong Jewelry tael
tl (T): Taiwan tael48

12.3. Options
EJ-02
EJ-03
EJ-13

USB interface
RS-232C serial interface
Density determination kit for EJ-123 / EJ-303

12.4. Dimensions
EJ-123 / EJ-303

190

211
133

φ110

○

90

5

Min.126

EJ-1202 / EJ-3002
190
140

127
208
133

Min.82
Unit: mm49

EJ-54D2
190

φ50

209

133

Min.114

Unit: mm50

97**(Opening)

42***

40*

108**
(Opening)
Unit: mm
* : Inside size from the center of the weighing pan to the sliding door**: Size of the breeze break opening***: Size of the sliding door protruding from the rear of the balance when opened

51

13. GRAVITY ACCELERATION MAP
Values of Gravity at Various Locations
Amsterdam
AthensAuckland NZ
BangkokBirmingham
Brussels
Buenos Aires
Calcutta
Cape Town
ChicagoCopenhagen
CyprusDjakarta
Frankfurt
Glasgow
HavanaHelsinki
KuwaitLisbonLondon (Greenwich)
Los Angeles
Madrid

9.813 m/s2
9.807 m/s2
9.799 m/s2
9.783 m/s2
9.813 m/s2
9.811 m/s2
9.797 m/s2
9.788 m/s2
9.796 m/s2
9.803 m/s2
9.815 m/s2
9.797 m/s2
9.781 m/s2
9.810 m/s2
9.816 m/s2
9.788 m/s2
9.819 m/s2
9.793 m/s2
9.801 m/s2
9.812 m/s2
9.796 m/s2
9.800 m/s2

ManilaMelbourne
Mexico City
Milan
New York
Oslo
OttawaParis
Rio de Janeiro
Rome
San Francisco
Singapore
Stockholm
SydneyTaichung
TainanTaipeiTokyo
Vancouver, BC
Washington DC
Wellington NZ
Zurich52

9.784 m/s2
9.800 m/s2
9.779 m/s2
9.806 m/s2
9.802 m/s2
9.819 m/s2
9.806 m/s2
9.809 m/s2
9.788 m/s2
9.803 m/s2
9.800 m/s2
9.781 m/s2
9.818 m/s2
9.797 m/s2
9.789 m/s2
9.788 m/s2
9.790 m/s2
9.798 m/s2
9.809 m/s2
9.801 m/s2
9.803 m/s2
9.807 m/s2

World Map

53

MEMO

54

THIS PAGE INTENTIONALLY LEFT BLANK.

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