1WMPD4003129C

© 2016 A&D Company, Limited. 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,
Limited.
The contents of this manual and the specifications of the instrument covered by thismanual are subject to change for improvement without notice.

Windows and Excel are registered trademarks of Microsoft Corporation.

CONTENTS
1.

INTRODUCTION ..........................................................................................................................4
1.1. Features ........................................................................................................................................ 4
1.2. Compliance ................................................................................................................................... 7
2. UNPACKING THE BALANCE .....................................................................................................8
2.1. Unpacking ..................................................................................................................................... 8
2.2. Installing the Balance .................................................................................................................. 10
3. PRECAUTIONS .........................................................................................................................133.1. Before Use .................................................................................................................................. 13
3.2. When Building Into a System ...................................................................................................... 14
3.3. During Use .................................................................................................................................. 16
3.4. After Use ..................................................................................................................................... 16
3.5. Power Supply .............................................................................................................................. 16
4. BASIC OPERATON (WHEN USING THE AD-1691) ...............................................................................17
4.1.
Changing the Weighing Speed Using AD-1691 ................................................................................ 18
4.2. Calibration ................................................................................................................................... 18
4.3. Calibration Using the Internal Weight .......................................................................................... 19
4.4. Correcting The Internal Weighing value ...................................................................................... 19
4.5. Calibration Using An External Weight ......................................................................................... 20
5. SMART RANGE FUNCTION .....................................................................................................21
6. UNDERHOOK ............................................................................................................................22
7. FUNCTION TABLE ....................................................................................................................23
7.1. How to set（When using the AD-1691） .................................................................................... 23
7.2. Details Of The Function Table ..................................................................................................... 24
7.3. Description Of The Class "Environment, Display"....................................................................... 26
7.4. Description Of The Item "Data Output Mode" ............................................................................. 27
7.5. Description Of The Item "Data Format" ....................................................................................... 28
7.6. Data Format Examples................................................................................................................ 31
8. STANDARD INPUT AND OUTPUT INTERFACE..................................................................................32
8.1. RS-232C Interface....................................................................................................................... 32
8.2. Commands .................................................................................................................................. 34
9. MAINTENANCE .........................................................................................................................40
9.1. Treatment Of The Balance .......................................................................................................... 40
9.2. Error Codes ................................................................................................................................. 40
9.3. Checking The Balance Performance And Environment .............................................................. 42
9.4. Asking For Repair........................................................................................................................ 42
10.
SPECIFICATIONS ..................................................................................................................43
11.
EXTERNAL DIMENSIONS .....................................................................................................44
12.
OPTIONS................................................................................................................................47
13.
TERMS ...................................................................................................................................49

3

1.

INTRODUCTION

This manual describes how the AD-4212D series balance works and how to get the most out of it interms of performance.
Read this manual thoroughly before using the balance and keep it at hand for future reference.

1.1. Features
 A compact Weighing Unit suitable for use in equipment for production line systems, draft chambers or
glove boxes. The weighing unit is compact.

 The calibration using the internal calibration weight can easily be performed.
 A Super Hybrid Sensor is used to provide high resolution.
Model

Weighing
capacity

Readability

Stabilization time*1

AD-4212D-33

32g

0.001mg

7 seconds

AD-4212D-32

32g／5.1g*2

0.01mg／0.001mg*2

7 seconds

AD-4212D-302

320g

0.01mg

7 seconds

AD-4212D-301

320g

0.1mg

3 seconds*1*2

With FAST selected under good environment
Smart range (Refer to “5. SMART RANGE FUNCTION”.)

 The AD-4212D series can output the weighing digital data directly. Therefore, the AD-4212D series(the weighing unit) can be connected to a personal computer or a PLC directly.
 The AD-4212D series has a patented shock absorber under the weighing pan and can cope withmovement in all directions, protecting the weighing unit from an actuator malfunction.
 By connecting the AD-1691 (Balance Environment Analyzer), the weighing value of the AD-4212D
can be displayed, and re-zeroing and calibration operations can be performed manually.
 By using AD-1691, the environment of the AD-4212D (AND-MEET) can be evaluated. Results of
AND-MEET can be saved in PDF format in USB memory.
 BCD output, comparator output, and analog output can be performed by selecting the option to
be installed on the AD-8922A.
 By connecting the AD-8923-BCD / CC (Expansion Controller for Weighing Line), weighing value
data from the AD-4212D can be read, and re-zero and calibration operations can be performed
manually.
In addition, the AD-8923-BCD can use the BCD output, and the AD-8923-CC can use the CCLink interface.
* CC-Link is a high-speed field network that can handle control and information at the same time.

4

Example 1 (Connecting to a AD-1691, a personal computer or an AD-8922A)● When connecting to AD-1691 and PC
RS-232C cable for PC/PLC(Sold separately: AX-KO4472-1000)
Connector for
the PC/PLC
AD-1691
AD-4212D

USB converter
Sold separately

RS-232C cable for weightindicator (Accessory: 2m)
Connector for A&D’s external
display

PersonalcomputerUSB port● When only connecting the AD-4212D to a PC
Connector for
the PC/PLC
AD-4212D

RS-232C cable for
the PC/PLC(Sold separately:
AX-KO4472-1000)

USB converter
Sold separately

PersonalcomputerUSB port● When connecting the AD-4212D to the AD-8922A (External display) and PC
RS-232C cable for PC/PLC(Sold separately: AX-KO4472-1000)
Connector for
the PC/PLC
AD-8922A
AD-4212D

RS-232C cable for weightindicator (Accessory: 2m)
Connector for A&D’s external
display

5

USB converter
Sold separately

PersonalcomputerUSB port

Example 2 (Connecting to a PLC)
● When connecting using the RS-232C
Connector for
the PC/PLC

D-sub 9-pin (female)AD-4212D
RS-232C cablefor the PC/PLC(Sold separately:
AX-KO4472-1000)* Depending on the
PLC to beconnected, aconverter for the Dsub 9-pin plug may
be required.

PLC● When connecting using the BCD
AD-4212D

Connector for A&D’s
external display
BCD input
AD-8922A-01
Connection cable*

AD-8922A(Sold separately)

PLC

BCD cable(Fabricate locally)
BCD output board(Sold separately: AD-8922A-01)* Specify the AD-8922A-01 connection cable when ordering the AD-8922A-01.
AX-KO3705-2002m
AX-KO3705-500
5m
AX-KO3705-1000 10 m
● When connecting using the CC-Link
Connector for A&D’s
external display

RS-232C cable for the PC/PLC(Sold separately: AX-KO4472-1000) ⋆2

AD-4212D

AD-8923-CC(Sold separately) ⋆1
To otherremote stations CC-Link network

PLC⋆1 Since the display of the AD-8923-CC is six digits, only the last six digits are displayed,
but the CC- ink outputs all digits.
⋆2 You can also connect with a PC / PLC cable (sold separately: AX-KO4472-1000), but you willneed to put the AD4212D in stream mode.

6

1.2. Compliance

Compliance with FCC Rules
Please note that this equipment generates, uses and can radiate radio frequency energy. Thisequipment 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 the equipment is operated in a commercial environment. If thisunit 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.)

7

2.

UNPACKING THE BALANCE

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.
 When unpacking, see the illustration below to confirm that everything is contained.

8

Note
When the AD-4212D series weighing unit is built into a system, be sure to earth ground theweighing unit using the grounding terminal.
Caution□ Use the specified dedicated AC adapter for the balance.
□ Use the included AC adapter, and do not connect an AC adapter that is not compatible.
□ If using the wrong AC adapter, the balance and other equipment may not work properly.

ATTACHING THE AD-4212D SERIES WEIGHING UNIT DIRECTLY ON THE MOUNTING BASE
When the AD-4212D series weighing unit is built into a system, remove the three leveling feet and use
the screw holes to secure the weighing unit to the base.

Weighing
unit

Attachment Procedure
1. Remove the three leveling feet.
Caution
Do not remove any other screws from thebottom of the weighing unit. Doing so could
damage the weighing sensor.

Leveling foot2. Secure the weighing unit from above. (Prepare
appropriate screws with a size corresponding
to an M5 screw. The screw hole diameter: 6mm).
In case of securing the weighing unit from theM5 screw x 3
under side, use M6 screws with 1-mm pitch.
Notes
The screws to secure the weighing unit to
the mounting base are not provided.
For the position of the holes, refer to “11.
EXTERNAL DIMENSIONS”.

M6 screw x 3
In some cases, an error in the leveling adjustment occurs due to the installation conditions.
If this happens, place a shim between the lower surface of the weighing unit and the securing
surface, or use the double-nut method with M5 or M6 nuts to adjust the height and secure theweighing unit. If the adjustment is still difficult to perform, perform calibration before use. That will
enable the balance to function normally.

92.2. Installing the Balance
Install the balance as follows:
1. Refer to “3. PRECAUTIONS” for installing the balance.
2. Refer to "2. UNPACKING THE BALANCE", to attach the pan support and the weighing pan on theweighing unit.
3. Insert the RS-232C cable into the jack located on the rear of the weighing unit.
Rear of theweighing unit

D-sub 9-pin
A&D's external display(AD-1691, AD8922A)

Sold separately:
AX-KO4472-1000

D-sub 9-pin(PC, PLC)

Arrow markface up

RS-232C cable

How to disconnect the cable from the weighing unit
Slide the connector sleeve in the direction of the arrow to unlock and gently pull the connector out.

Unlocked
Slide the connector sleevein the direction of the arrow

4. Follow the numerical sequence to assemble the small breeze break.

10** The cover's hole is not
positioned in the centerof the cover. Attach thecover on the breeze
break so that the hole ispositioned just above theweighing pan.

Weighing pan

5. Confirm that the AC adapter type is correct for the local voltage and power receptacle type.
6. Plug the AC adapter plug into the AC adapter jack located on the rear of the weighing unit and plug
the AC adapter into the electrical outlet. Warm up the balance for one hour or more with nothing
on the weighing pan.
How to use the power plug stopper
1) Remove the screw attached on the main body.
2) Insert the power plug stopper to the slit at the thickest part of the AC adapter plug.
3) Insert the AC adapter plug into the AC adapter input jack and secure the power plug stopper to themain body with a screw.

3

3
1

2

7. Set the pan unit and I/O unit to adapt to the peripheral system. Set the following for the I/O unit.
 RS-232C (Refer to“8.STANDARD INPUT AND OUTPUT INTERFACE”)
Set the weighing speed to adapt to the ambient conditions.

11

Note
Make sure that the personal computer is in operation before connecting to the AD-4212D.
8. After the balance has been installed, calibrate the balance using the internal weight or external
calibration weight. For details, refer to “4.2. Calibration”.
9. By removing the provided weighing pan, a locally fabricated weighing pan can be attached to the AD-4212D
series by using the four screw holes on the pan support.

MASS OF THE LOCALLY FABRICATED WEIGHING PAN
Design the weighing pan so that the mass falls within the ranges shown in the table below:
Model

Status
Pan support is used (with weighing pan removed)

AD-4212D-33/32

Pan support boss is used (with the weighing pan andpan support removed)
Pan support is used (with weighing pan removed)

AD-4212D-302/301

When the weighing pan
is removed

10 g

Mass range
21 g
to be weighedMassof locallyfabricated pan

35 to 46
20 to 230

Pan support boss is used (with the weighing pan andpan support removed)

AD-4212D-33/32

32 g

Mass ofthe weighing pan (g)10 to 21

AD-4212D-302/301

When the weighing pan andpan support are removed

32 g

70 to 280

When the weighing pan
is removed

Mass range
21 g
to be weighed

320 g

Mass range
110 g
to be weighed

21 g
46 g
Mass oflocally
35 gfabricated pan

20 g

Mass oflocally
fabricated pan

When the weighing pan andpan support are removed

320 g

Mass range
110 g
to be weighed

230 g
Mass oflocally
70 g fabricated
pan

280 g

Notes
If the balance is to be used in a range other than shown above, contact the local A&D dealer.
To avoid the effects of static electricity or magnetism, use materials other than resin ormagnetic materials when designing a weighing pan.
When a locally fabricated weighing pan is used, the zero point may be shifted greatly rightafter the AC adapter is plugged in. Perform re-zero before weighing to cancel the amount ofzero drift as necessary.

Shock absorber specifications
AD4212D series have specifications that the shock absorber functions at about 800g toprotect the weighing sensor.
Also, avoid giving impact shock to the weighing pan while loading.

12

3.

PRECAUTIONS

To get the optimum performance from the balance and acquire accurate weighing data, note thefollowing:

3.1. Before Use
 Install the weighing unit in an environment where the temperature and humidity are notexcessive. The best operating temperature is about 20°C / 68°F at about 50% relative humidity.
 Install the weighing unit where it is not exposed to direct sunlight and it is not affected by heaters
or air conditioners.
 Install the weighing unit where it is free of dust.
 Install the weighing unit away from equipment which produces magnetic fields.
 Install the weighing unit in a stable place avoiding vibration and shock. Corners of rooms on thefirst floor are best, as they are less prone to vibration.
 Ensure a stable power source when using the AC adapter.
 Connect the power to the balance using the AC adapter at least one hour before use, but in thecase of the AD-4212D-33/32, four hours are required. It is recommended to connecting the power
to the balance.
 Calibrate the balance before use or after having moved it to another location.
In addition, calibrate it periodically to maintain the accuracy.

Caution
Do not install the balance where flammable or corrosive gas is present.

13

3.2. When Building Into a System Errors due to a static charge and measures to take
When the ambient humidity is 45% RH ore less, insulators such as plastic or glass are prone tostatic electricity. When charged material comes close to the balance, a pulling force is generated
by static induction between the charged material and the weighing pan. This causes the weighing
value to be unstable.
To protect the balance from malfunction due to discharging of the charged material when it comesclose to the balance, be sure to earth ground the weighing unit and the display unit.
Note that static electricity generated by static induction will not be canceled by earth-grounding.
Use a humidifier or a DC static eliminator such as the AD-1683.
Charged plastic breeze break
The pulling force
causes an unstableweight value

Charged sample

Weighing unit

A pulling force generated
between the charged
sample and the balancecauses an unstable weightvalue.

Measures to take (Plastic is used in the examples below. They can be applied to glass, too.)
When the sample or devices are plastic
 Use a static eliminator that generates no air blow such as the AD1683, DC static eliminator, to remove static electricity.
 Place the sample in a container that is made of a conductive material
such as metal and that can be sealed, and then weigh it.

Chargedmaterial
Metal case

When the sample is powdery When the balance is used in combination with a feeder for batchweighing of powdery samples, samples may be charged by rubbing
sample particles against each other.
Use a static eliminator and perform weighing while removing
static electricity.

Grounding
When the sample container is made of material that is prone to static electricity such as plastic
 Cover the outside of the container with a metal such as aluminum foil.
 Apply an anti-static agent onto the container.

When making a breeze break using plastic
 Apply an anti-static agent onto the breeze break.
 Use a conductive acrylic fiber.
When plastic exists in the balance installation site Cover the plastic with a grounded conductive material.
 Apply an anti-static agent onto the plastic.
When an operator is static charged
If an operator’s clothes are static charged, especially in winter, it may be a cause for unstableweighing values.
 Wear an anti-static wrist strap.

14

 Errors due to air flow and measures to take
Where the influence of ambient air flow is great suchas: close to an air conditioner or fan, door or
passage way. Even very subtle air flow that is hard
to be detected may influence the weighing operation.
 Avoid those areas as a weighing site.
 If weighing is to be performed in such an area,
use a breeze break or take other appropriate
measures.

Influence of the air flow
makes the weightvalue unstable

Where the influence of heat or drafts is great Eliminate temperature differences between asample and the environment.
Draft
When a sample is warmer (cooler) than the
40 C
ambient temperature, the sample will be lighter
20 C(heavier) than the true weight. This error is due toa rising (falling) draft around the sample.
 Do not touch the sample directly with your hand.
Use tweezers or other tools.
If you touch the sample, the same type error
described above will occur.
 Do not perform weighing where it is exposed to direct sunlight. Weighing errors may occur due
to sudden temperature change or drafts.

 Errors due to vibration and measures to take
Where the influence of vibration is great, such as:(1) Soft ground (2) Second or higher floor (3) Near center of a floor far from pillars (4) Seismic isolated
structures (5) Near tall buildings.
In the areas listed above, the scale may yield unstable weighing values on windy days or after anearthquake. Especially in case of (4) and (5), weighing values may be unstable for a long period of time
because of long lasting low-frequency vibration after strong winds or an earthquake.

 Errors due to other causes and measures to take
Change in temperature or humidity
A sudden change in temperature or humidity can generate a draft and cause the balance to absorb
or exude moisture, which leads to unstable displays.
 Avoid sudden change in temperature or humidity.
 Use an air conditioner or humidifier to control the temperature or humidity.

Magnetic material
The balance uses a strong magnet as part of the balance assembly, so use much care whenweighing magnetic materials.
 Place a non-magnetic object such as aluminum or brass between the sample and the balance
to keep an appropriate distance between them while weighing.

15

3.3. During Use
 To minimize the affect by electrical noises, earth groundthe weighing unit and the display unit (option).
 Do not drop things upon the weighing pan, or place asample on the pan that is beyond the balance weighing
capacity. Place a sample in the center of the weighing pan
to minimize corner-load errors.
 To prevent possible errors, before each weighing, perform
re-zero using the RS-232C command, or calculate thedifference between the weighing value before and after
weighing.
 Take into consideration the affect of air buoyancy on a sample when measuring the absolute value
with the readability of 0.1 mg.
 While cleaning, attaching the waterproof cap to the unit instead of the weighing pan results in the
AD-4212D becoming dust-proof and drip-proof and conforming to IP65. Be sure to clean theweighing pan and keep the conditions around the pan clean after weighing powdery, fluid samples
or metallic strips.
 Balance status is indicated by the pilot lamp.
Lamp status
Turned off

Balance status
The power with the balance is not turned on.

Green

Weighing mode

Red

When turning on the power, when an error has
occurred, or during a re-zero or calibration

3.4. After Use Avoid mechanical shock to the weighing unit.
 Periodically calibrate the balance using the internal weight or a calibration weight.
 Do not disassemble the weighing unit. Contact the local A&D dealer if the balance needs service
or repair.
 Do not use organic solvents to clean the weighing unit. Clean the weighing unit with a lint free cloththat is moistened with warm water and a mild detergent.
 Avoid dust and water so that the weighing unit weighs correctly. Protect the internal parts from liquid
spills and excessive dust.

3.5. Power Supply When the AC adapter is connected, the balance is in the standby mode if the standby indicator ison (refer to “4. BASIC OPERATON (WHEN USING THE AD-1691)”). This is a normal state anddoes not harm the balance. For accurate weighing, plug in the AC adapter and warm up the balance
for the appropriate duration before use.

16

4.

BASIC OPERATON (WHEN USING THE AD-1691)

Using the provided AD-1691 weighing environment analyzer as a remote controller enables
performing the following functions.
・ Weighing value display
・ Calibration
・ Changing of the readability
・ Changing of the weighing speed (Response)・ Re-zeroPreparations before use
1. Connect the RS-232C connector for the A&D's external display to the AD1691's arbitrary RS-232C
connector using the cable.
* Factory setting of the AD1691 is set to COM1.
2. Connect the AD-4212D to the power using the AC adapter to turn the power on and put the AD4212D to weighing mode.
3. Connect the AD-1691 to the power using the AC adapter and turn the power on.
4. Perform functions as the balance weighing display from the home screen.
5. Touch the Start button to display the weighing value.
* AD-4212D weighing indicator RS-232C has a fixed 2400bps baud rate with parity-even and databits-7 bits.

Descriptions for the display and buttons

Stabilization
indicator
Weighing
value

Each button

ButtonFunction

ON:OFF

Toggles between the weighing mode and standby mode.

CAL

Performs the calibration using the internal weight.

EXC

Performs the calibration using the calibration weight.

MODE

Changes the weighing speed (Response speed).

RANGE / SAMPLE

Changes the readability.

ENTRE(PRINT)

Outputs the weighing value from the RS-232C external output port of the AD-1691.

RE-ZERO

Sets the display value to zero.

OutputOutputs the current weighing value.

ION

Has no function.

17

4.1. Changing the Weighing Speed Using AD-1691
The weighing speed can be selected from the following three rates to minimize the influence on
weighing that is caused by drafts and or vibration at the place where the balance is installed.
Indicator
FAST
MID.
SLOW

Speed
Fast

Stability
Sensitive value

Slow

Stable value

Weighing speed setting

Operation

MODE Touch

1. Touch the MODE button to select a weighing speed. Either
FAST, MID. or SLOW can be selected.

MODE Each touchingswitches
the indicators

4.2. Calibration
Calibration

Calibration using the calibration weight.
Calibration can be done without removing the special plate or jig attached to the weighing plate.
(However, this only applies if the total of the special plate and jig and the calibration weight used does
not exceed the capacity of the balance.)

Caution Do not allow vibration or drafts to affect the balance during calibration.

Caution on using an external calibration weight The accuracy of the weight can influence the accuracy of weighing. Select an appropriate weight
as listed below.
Model
AD-4212D-33/32

Usable calibration weight
1g, 2g, 5g, 10g, 20g, 30g

AD-4212D-302/301

10g, 20g, 50g, 100g, 200g, 300g

The calibration weight in bold type: factory setting

Display This indicator means “the balance is measuring calibrationdata”. Do not allow vibration or drafts to affect the balance
while this indicator is displayed.

18

4.3. Calibration Using the Internal WeightThis function calibrates the balance using the internal weight.
1 Connect the AC adapter and warm up the balance for atleast one hour with nothing on the weighing pan.

2 Touch the

CAL

key to display

Cal

CAL

.

3 The balance performs calibration using the internal weight.
Do not allow vibration or drafts to affect the balance.

4 The balance will automatically return to the weighing mode after calibration.

4.4. Correcting The Internal Weighing value
The balance can correct the internal
weighing value within the range shown
below. This function corrects the internal
weighing value to conform to an external
weight. The corrected weighing value ismaintained in non-volatile memory even if
the AC adapter is removed. The internal
weighing value is corrected as follows:
Model

200g

The same weight
Correct the internal weightby +0.6mg at 20g.
Calibrate with this internal
weight.

200g

Corrected external weight

The internal weight

The normal range

AD-4212D-33/32

20 g±5.000 mg

AD-4212D-302

100 g±5.00 mg

AD-4212D-301

100 g±5.0 mg

Example: 20.000000 g is corrected to +0.6 mg (20.000600 g). When using a 10 g external weight by+0.6 mg for the correction, and the weight changed to 20 g, the correction value is +1.2 mg.
1 Perform one-touch calibration. Weigh an external weight and get the correction value.
2 Connect the balance to a PC using the RS-232C.
3 Transmit a CS command to the balance from the PC.
Example) If correcting with + 0.6 mg, transmit“CS:+0.6 mg” to the balance. (“ ”means space)
If correcting with - 0.0020 mg, transmit“CS:+0.0020

mg” to the balance.

4 Perform the calibration using the internal weight.
5 Place an external weight on the weighing pan to confirm that the correction was properly performed.
If the proper value cannot be obtained, readjust the correction value.
* To confirm the currently corrected value, transmit ?CS command to the balance from the PC.

19

4.5. Calibration Using An External Weight
Calibration procedure

This function calibrates the balance using the calibration weight. (Display example: AD-4212D-33)

Operation
1. Plug in the AC adapter and warm up the balance for 30 minutes or more withnothing on the pan.
2. Touch the EXC button.

Cal 0

is displayed.

 If you want to cancel calibration, touch the CAL button. The balance
will return to the weighing mode.

EXC

 If you want to change the calibration weighing value, press the
SAMPLE button. Touch the RE-ZERO button to select the weighing
value, and touch the ENTER button to store it. Cal 01
isdisplayed.

3. Confirm that there is nothing on the pan and touch the ENTER button.
The balance measures the zero point. Do not allow vibration or drafts
to affect the balance.
The balance displays the calibration weighing value.

ENTER

4. Place a calibration weight, of the weighing value displayed, on the
pan and touch the ENTER button. The balance measures thecalibration weight. Do not allow vibration or drafts to affect thebalance.

ENTER
5. The balance displays

end . Remove the weight from the pan.

6. The balance will automatically return to the weighing mode.

7. Place the calibration weight on the pan and confirm that calibration was
performed correctly. If not, check the ambient conditions such as drafts
or vibration, and repeat steps 2 through 7.

20

5.

SMART RANGE FUNCTION

The AD-4212D-32 is equipped with two ranges. The precision range has a higher resolution. The
standard range has a normal resolution.
The range switches automatically depending on the value displayed. Touching the RE-ZERO buttonor sending the R command allows weighing in the precision range regardless of the tare value. The
range can be fixed to the standard range by changing the readability using the RE-ZERO button or R
command.
1 Touch the RE-ZERO button or send the Rcommand.
The balance will start weighing, using the
precision range.

Weighing Precision range
panContainer Standard range

2 Place a container on the weighing pan.
The weighing value exceeds the precision range
value and the balance will switch to the standard
range.

Precision range

3 Touch the RE-ZERO button or send the Rcommand.
The balance will switch to the precision range.
4 Place a sample in the container.
The weighing value is within the precision range
value and the balance will perform a weighing,using the precision range.

SamplePrecision range

Precision range/standard range
Model

Range used

Weighing range

Available readability

AD-4212D-32

Precision range*
Standard range

0 g to 5.1 g
5.1 g to 32 g

0.000001g (0.001mg)
0.00001g (0.01mg)• The factory setting is the precision range.
* When the weighing value exceeds 5.1 g while the readability of 0.000001 g (precision range) isused, the balance will switch to the readability of 0.00001 g (standard range). By touching the REZERO button or sending the R command, the balance can weigh from that point up to 5.1 g, using
the readability of 0.000001 g (precision range).

21

6.

UNDERHOOK

The underhook can be used for magnetic materials or density measurement. The built-in underhook
is revealed by removing the cap on the bottom of the balance. Use the underhook as shown below.
Caution
Do not apply excessive force to the underhook.
When not in use, attach the cap to prevent dust fromgetting into the balance.
Do not push the underhook upward
When turning the balance over, parts and weighing
matter in the weighing chamber will fall off. (Parts: theweighing pan and fine range ring)
Underhook
Remove them first.
Cap
When the cap is removed, a weighing error may occur,
because of drafts entering into the internal portion of
the balance. Arrange the room condition.
How to use
1 Remove the cap on the bottom of the balance.
2 Hang your weighing pan on the underhook.
Place the balance on the solid table.

Sturdy table equippedwith a hole.
Weighing pan

22

Bottom7.

FUNCTION TABLE

The function table reads or rewrites the parameters that are stored in the balance.
These parameters are maintained in non-volatile memory, even if the AC adapter is removed.
The function table menu consists of two layers. The first layer is the "Class" and the second layer isthe "Item".

7.1. How to set（When using the AD-1691）
Using the provided AD-1691 weighing environment analyzer as a remote controller enables changes
or confirmation of function settings.
1. Connect the RS-232C connector for the A&D's external display to the AD-1691's arbitrary RS-232C
connector using the cable.
2. Connect the AD-4212D to the power using the AC adapter to turn on the power and have the AD4212D enter the weighing mode.
3. Connect the AD-1691 to the power using the AC adapter and turn the power on.
4. Perform the balance internal setting configuration at the AD-1691.

5. Touch the Take Data button to start communication between the AD-1691 and AD-4212D.
6. The screen shows the function settings list.

7. Click the arrow mark to change the setting values.
* The changed contents have yet to be confirmed at this step.
8. Touch the Confirm button to start the communication and change the balance function settings.
The device will be restarted when the setting changes were ended.
23

7.2. Details Of The Function Table
Class

Item and Parameter
Cond
Condition

Fast response, sensitive value

1

FAST Can be changed byMID. response
SLOW adjustment.

Slow response, stable value0

Stable range is ±1 digit

1±2 digit

2

Stable range is ±3 digits

0

OFF

1

Normal2

Strong3

Very strong

5pd
Display refresh rate

0

5 times/second#3

1

10 times/second#3

pnt
Decimal point

0

Point (.)

1

Comma (,)

Unit
Unit

0

g (gram)1

mg (milligram)0

Normal mode

Outputs data by commands.

1

Auto print mode A
Reference = zero2

Auto print mode B
Reference = last stable value

Outputs data when thedisplay is stable andconditions of ap-p, ap-b andthe reference value are met.

3

Stream mode /Interval modetrc
Zero tracking

prt
Data output mode
dout
Data output
#4

0
2

5t-b
Stability band widthba5fncEnvironment
Display

Description

The stabilization indicator#1 illuminates when the display
fluctuation is within therange.
Keeps zero display bytracking zero drift.

Period to refresh the display
Decimal point format

0

Plus only

Displayed value > Reference

ap-pAuto print polarity

1

Minus only

Displayed value < Reference

2

Both

Regardless of displayed
value

ap-b
Auto print
difference0

10 digits

1

100 digits

21000 digits

Difference between reference
value and displayed value#2: Factory settings.
#1 The unit of readability is digit.
Example: If 1 mg display is selected touching the RANGE button for the AD-4212D-301, 1 mg
is one digit.
#2 Usable readability of the balance is one digit.
Example: In gram display, one digit is 0.00001 mg for the AD-4212D-302 and 0.0001 mg for the
AD-4212D-301.
#3 Factory settings of the AD-4212D-33 and AD-4212D-32 is set to 5 times per second.
Factory settings of the AD-4212D-302 and AD-4212D-301 is set to 10 times per second.
#4 These items apply only for RS-232C output for the PC or PLC.

24

ClassItem and Parameter

Description

0 Every measurement
1
2 seconds
2
5 seconds
3 10 seconds
intInterval time in the interval memory
4 30 seconds
mode when using prt 3
Interval time5
1 minutes
6
2 minutes
7
5 minutes
8 10 minutes
0 No output
Selects whether or not the time or
1 Time only
5-td
dout
date is added to the weighting
2 Date only
Data output Time/Date output
data.
#4
3 Time and date
off No output
5-id
Selects whether or not the ID
number is output.
ID number output
on Output
off No pause
pU5e
Selects the data output interval.
Data output pause
on Pause (1.6 seconds)
off Not used
at-f
Selects whether or not automatic
feed is performed.
Auto feedon Usedoff Not usedar-d
Adjusts zero automatically after
data is output
Zero after output
on Usedoff Not output
5-tp
Adds temperature to data output
Temperature output
on Output
0
600 bps
11200 bps
22400 bps
bp5
Baud rate
34800 bps
49600 bps
5 19200 bps
0 7 bits, evenbtpr
5if
1 7 bits, odd
Data bit, parity bit
Serial2 8 bits, none
interface
0
CR LF
Crlf
CR: ASCII code 0Dh#4Terminator
LF: ASCII code 0Ah
1 CR
0 A&D standard format
1 DP format
2 KF format
type
Refer to "7.5. Description Of The
Item "Data Format" ".
Data format
3 MT format
4 NU format
5 CSV format
off No limit
t-Up
Selects the wait time to receive acommand.
Timeout
on 1 second
off No output
erCd
AK: ASCII code 06h
AK, Error codeon Output: Factory settings.
CautionThe balance may not transmit the data completely at the specified refresh rate, dependingon the baud rate or data added to the weighing data such as time, date and ID number.
#4
These items apply only for RS-232C output for the PC or PLC.
25

7.3. Description Of The Class "Environment, Display"
Condition ( Cond )Cond 0 This parameter is for sensitive response to the fluctuation of a mass value. Used for
powder target mass, weighing a very light sample or when quick response weighing isrequired.
Cond 2
Notes

This parameter is for stable weighing with slow response. Used to prevent a mass value
from drifting due to vibration or drafts.
In automatic response adjustment, this parameter is selected automatically.

Stability band width ( 5t-b )This item controls the width to regard a mass value as a stable value. When the fluctuation per second
is less than the parameter, the balance displays the stabilization indicator and outputs. The parameter
influences the "Auto print mode". Currently displayed readability means 1 digit.
Example) If the RANGE button was touched to select the 1 mg display at the AD4212D-301, 1 mg
means 1 digit.
5t-b 0This parameter is used for sensitive response of the stabilization indicator. Used forexact weighing.

5t-b 2This parameter ignores slight fluctuations of a mass value. Used to prevent a mass
value from drifting due to vibration or drafts.

Zero tracking ( trc )This function tracks zero point drift caused by changes in the environment and stabilizes the zero point.
When the weighing data is only a few digits, turn the function off for accurate weighing.
trc 0
The tracking function is not used. Used for weighing a very light sample.
trc 1
The normal tracking function is used.
trc 2
The strong tracking function is used.
trc 3
The very strong tracking function is used. Used for stable zero display.

Display refresh rate ( 5pd )The periodic time to refresh the display. This parameter influences "Baud rate", "Data output pause"and the data output rate of "Stream mode".

Decimal point ( pnt )The decimal point format can be selected.

26

7.4. Description Of The Item "Data Output Mode"
The parameter setting of "Data output mode (prt)" applies to the performance when the data istransmitted using the RS-232C interface.

Normal mode

The output is performed only when receiving a command such as a Q command.
Required setting
dout
prt 0
Normal mode

Auto print modes A and B

When the displayed value is stable and the conditions of "Auto print polarity", "Auto print difference"and reference value are met, the balance outputs the weighing data once.
Auto print mode A
ExampleRequired setting

For weighing each time a sample is placed and removed, with "ar-d"
set to "on" (to adjust zero after the data is output).
dout
prt 1
Auto print mode A (reference = zero)
dout
ap-p
Auto print polarity
dout
ap-b
Auto print difference
dout
ar-d on Zero after output

Auto print mode B
ExampleRequired setting

For weighing while a sample is added.
dout
prt 2
Auto print mode B (reference = last stable value)
dout
ap-p
Auto print polarity
dout
ap-b
Auto print difference

Stream mode

The balance outputs the weighing data continuously regardless of the display condition. When thedisplay refresh rate is set to 5 times / second (5pd 0), the data output rate is also set to the same 5times / second.
ExampleFor monitoring data on a computer.
Required setting
dout
prt 3
Stream mode
ba5fnc 5pd
Display refresh rate
5if
bp5
Baud rate
CautionThe balance may not transmit the data completely at the specified refresh rate, dependingon the baud rate or time, date and ID number appended to the weighing data.

Interval mode

The weighing data is periodically output.
ExampleIn case of monitoring the weighing value periodically, the time and datecan be added to the weighing data depending on settings of 5-td..
Required setting
dout
prt 3
Interval mode
dout
intInterval time27

7.5. Description Of The Item "Data Format"* The output data format applies only to RS-232C output for the PC or PLC.

A&D standard format

5if type 0This format is used when the peripheral equipment can receive the A&D format.
This format consists of fifteen or sixteen characters excluding the terminator.
When numerical characters without decimal point are eight characters for the AD-4212D-33, AD4212D-32 and AD-4212D-302, the format becomes sixteen characters.
A header of two characters indicates the balance condition.
The polarity sign is placed before the data with the leading zeros. If the data is zero, the plus sign
is applied.
The unit, consisting of three characters, follows the data.
HeaderData

Unit

Terminator

Stable header
Unstable header
Overload header
HeaderData

Unit

Terminator

DP (Dump print) format

5if type 1

This format consists of sixteen characters excluding the terminator.
A header of two characters indicates the balance condition. No overload header is used.
The polarity sign is placed before the data, with spaces in place of leading zeros, if the data is notzero or overloaded.
The unit, consisting of three characters, follows the data.
HeaderData

Unit

Terminator

Stable header
Unstable header

KF format

5if type 2

This is the Karl-Fischer moisture meter format and is used when the peripheral equipment can only
communicate using this format.
This format consists of fourteen characters excluding the terminator.
This format has no header characters.
The polarity sign is placed before the data, with spaces in place of leading zeros, if the data is notzero or overloaded.
This format outputs the unit only for a stable value.
Data

Unit

Terminator
Stable value
Unstable value

28

MT format

5if type 3

This format is used when the peripheral equipment of other manufacturer is connected. Please notethat the connection is not guaranteed.
A header of two characters indicates the balance condition.
The polarity sign is used only for negative data.
The weighing data uses spaces in place of the leading zeros.
The character length of this format changes dependent upon the unit
HeaderData

Unit

Terminator

Stable header
Unstable header
Overload header

NU (numerical) format

5if type 4

This format outputs only numerical data.
This format consists of ten characters excluding the terminator.
The polarity sign is placed before the data with the leading zeros. If the data is zero, the plus sign
is used.
Data

Terminator

CSV format

5if type 5

This format separates the data of A&D standard format and the unit by a comma ( , ).
This format outputs the unit even when the data is overloaded.
When a comma ( , ) is selected for the decimal point, the separators are set to semicolon ( ; ).
When the ID number, time and date are added at "Data output (dout)" of the function table, outputs
ID number, date, time and weighing data in this order and separates each item by a comma andtreats all the items as one group of data.

LAB-0123, 2004/07/01, 12:34:56, ST,+0000.1278,~ ~ g<CR><LF>
ID number

Date

S T , +
O L ,

0 0

+ 9

Time

0 . 1

9 9

9 9

2 7

Weighing data
8g CR LF,

9 9 E + 1 9,

g CR LF

ID numberdout 5-id on

The number to identify a specific balance.
This format consists of eight characters excluding the terminator.

Date

The date output order can be changed in " Time/Date output (5-td)" .
The year is output in a four-digit format.
2

0 1

5 / 0

9 /

0 1 CR LF

29

dout 5-td 2 or 3

Timedout 5-td 1 or 3

Temperature

dout 5-tp on

This format outputs time in 24-hour format.

This format outputs temperature. The unit is "C".
Caution
Humidity and air pressure are not output.

30

7.6. Data Format Examples
StableUnstable

Overload

Positive error

Overload

Negative error

Space,
Carriage Return,Line Feed,

ASCII 20h
ASCII 0Dh
ASCII 0Ah

31

8.

STANDARD INPUT AND OUTPUT INTERFACE

8.1. RS-232C Interface
The balance is a DCE device. Connect the balance to a personal computer (DTE) using a straight throughcable.
Transmission system: EIA RS-232C
Transmission form
: Asynchronous, bi-directional, half duplex
Transmission rate
: 10 times/second or 5 times/second (same as data refresh rate)
Data format: Baud rate : 600, 1200, 2400, 4800, 9600, 19200bps
Data bits: 7 or 8 bits
Parity: Even, Odd(Data bits 7 bits)
None(Data bits 8 bits)
Stop bit: 1 bitCode: ASCII
Format for one charactor-5V to -15V
+5V to +15V
Data bits
Start bit

Pin assignments

Stop bit
Parity bit

Pin assignments of the RS-232C communication cable for PC or PLC (D-Sub 9 pin side)
Pin No.
Signal name
Direction
Description
1
No connection
D-Sub 9 pin plug of RS-232C
cable for the PC or PLC
2
TXD
OutputTransmit data
3
RXD
Input
Receive data
5 4 3 2 1
4
No connection
5
SG
Signal ground9 8 7 6
6
DSR
OutputData set ready
7
RTS
Input
Request to send
#4-40UNC
8
CTS
OutputClear to send9
No connection
Signal names other than TXD and RXD are DTE-side names.
Balance side
DCE

+5V

Computer side
DTE
TXD

2

RXD

3

RTS

7

CTS

8

DSR

6

SG

5

RXD
TXD
RTS
CTS
DSR
SG
Terminal example of
the PL or PLC side

Inside of balance32Connection to a computer using the RS-232C Interface

Features
The balance is of the DCE type (Data Communication Equipment), which can be connected to apersonal computer using the RS-232C interface. Before connection, read the personal computer
manual thoroughly.
Using Windows Communication Tools Software (WinCT)
When Windows is used as an operating system in a personal computer, the WinCT software can beused to transmit the weighing data to the personal computer.
The WinCT software has three communication methods: "RsCom", "RsKey" and "Rsweight". Refer tothe WinCT instruction manual.
The current version of the WinCT can be downloaded from the A&D website.
RsCom
RsCom can transmit commands to control the balance.
RsCom can make bi-directional communication between the balance and a personal computer
using the RS-232C interface.
RsCom can display or store the data using a text file format. RsCom can also print the data usinga printer connected to the personal computer.
When several ports of a personal computer have balances connected, the personal computer cancommunicate with each balance simultaneously.
RsCom can share a personal computer with other application software.
RsKey
RsKey can transmit the weighing data output from the balance directly to other application software
such as Microsoft Excel.
RsKey can be used with most application software.
RsWeight
Can retrieve the weight data from the balance and display the data as a graph in real time.
Can calculate and display the maximum, minimum, average, standard deviation and coefficient ofvariation.
Using the WinCT software, the balance can do the following:
Analyzing the weighing data and the statistics input by "RsKey"
The weighing data can be input directly into an Excel worksheet. Then, Excel can analyze the data toobtain total, average, standard deviation, maximum and minimum value, and display them in a graph.
Controlling the balance using commands from a personal computer
By using "RsCom", the personal computer sends commands such as "re-zero" or "send weighingdata" to the balance and controls the balance.
Receiving weighing data at a certain interval
The weighing data can be received at a certain interval and data characteristic with elapsed time
can be obtained.
Using a personal computer as an external indicator
With the "RsKey" test mode function, a personal computer can be used as an external display forthe balance. (To do this, set the balance data output mode to stream mode.)33

8.2. Commands
Command List
Note

A command has a terminator added, that is specified using "5if, Crlf" of thefunction table, and is sent to the balance.

Commands to query weighing data
C
Cancels the S or SIR command.
Q
Requests the weighing data immediately.
S
Requests the weighing data when stabilized.
SI
Requests the weighing data immediately.
SIR
Requests the weighing data continuously.
Commands to control the balance
Performs calibration using the internal weight.
CAL
Performs calibration using the external weight.
EXC
Goes into standby mode. (Weighing value output is not performed)
OFF
Goes into weighing mode from standby mode.
ON
Switches between weighing mode and standby mode.
P
Confirms operations at the calibration etc.
PRT
Performs re-zero.
#1
R
Switches the readability.
RNG
Tares the balance.
#1
TR
Changes the weighing speed.(Response speed)
U
Commands to request data
Outputs the identification number.
?ID
Outputs the tare value.
#1?PT
Outputs the serial number of the balance.
?SN
Outputs the model name of the balance.
?TN
?TM
?DT
?CS

Outputs time.
Outputs date.
Outputs a correction value for the internal weight.

Command to set data
Sets the tare value.
#1PT:∗∗∗.∗∗∗∗g
Sets time.
TM:∗∗:∗∗:∗∗
Example) 12:34:56
TM: 12:34:56
Sets date.
DT:∗∗/∗∗/∗∗
Example) October 1, 2015
DT: 15/10/01
ID:∗∗∗∗∗∗∗∗
Sets the ID number.
CS:∗∗∗.∗∗∗∗
g
Performs a correction for the internal weight.
#1

Command R assumes the point as zero and sets the display to zero.
Command TR cancels the tare weight when the displayed value is greater than zero.
The canceled tare value can be read using the command ?PT.

34

Command PT:∗∗∗.∗∗∗∗
g sets the tare value digitally.
An example of this command sets a negative target value and fills with the sample until thedisplay becomes zero. For details, refer to page 39.
Step 1
Place a container.
Step 2
Set the display to zero using the R command.
Step 3Set a target value using the PT: command.

35

Acknowledge Code And Error Codes
When the "Serial interface function (5if)" parameter is set to "erCd on", the balance outputs <AK>code or error code to each command as follows:<AK> (06h)Acknowledge in ASCII code.
When the balance receives a command to request data and can not process it, the balancetransmits an error code (EC, Exx).
When the balance receives a command to request data and can process it, the balance outputs
the data.
When the balance receives a command to control the balance and can not process it, the balancetransmits an error code (EC, Exx).
When the balance receives a command to control the balance and can process it, the balancetransmits the acknowledge code.
<AK> (06h)Acknowledge in ASCII code.
Among commands to control the balance, the following transmit the acknowledge code both when thebalance receives the command and when the balance has accomplished the command. If thecommand can not be processed properly, the balance transmits an error code (EC, Exx). This error
can be released using the CAL command. xx is error code number.
CAL command(Calibration command using internal weight)
EXC command
ON command(Display ON command)
P command(Display ON/OFF command)
R command(RE-ZERO command)
TR command(Tare command)
When a communication error has occurred due to external noise, or a parity error has occurred due
to transmission error, the balance transmits an error code (EC, Exx). In this case, send thecommand again. xx is error code number.

Settings Related To RS-232C
Concerning the RS-232C, the balance has two functions: "Data output (dout)" and "Serial interface (5if)".
Set each function as necessary.

36

Command Examples
This example uses the "erCd on" of "5if" so that the <AK> (06h) code is output.

ON command (turning on the balance)

Computer

Time

BalanceStandby mode

ON command

Command received
All segments are displayed
Command completed
Zero display

R command (Re-zeroing the display)
Computer

Time

Balance
Weighing mode

R command

Command received
In process
Command completed
Zero display

CAL command (Calibration with internal weight)
Computer

Time

BalanceZero display

CAL command

Command received
Command completed
Zero display

37

Error code
This example is of an error using the R command. "erCd on" is used. The balance transmits an error codewhen the received command can not be achieved.

Computer

Time

Balance

R command

Weighing mode (unstable)
Command received
In process
When the R command can not be
achieved due to unstable weighing:Error code
When the CAL command is received, thebalance returns to the weighing mode.
Command completed.
Weighing mode

CAL command

Weighing with a tareThis example uses "erCd on" of "5if" so that the <AK> (06h) code is output.
Computer

Time

Balance

R command

Sets the display to zeroCommand received
In process
Command completed
Zero display
Place a container

TR command
Tares
Command received
In process
Command completed
Zero display

S command?PT command(Net value)(Tare value)38

Setting a negative target value and filling with a sample until the display becomes zeroThis example uses "erCd on" of "5if" so that the <AK> (06h) code is output.
Computer

Time

Balance
Place a container
Before commandexecution

R command

Command received
In process
Command completed

PT: command to set a target weight of 1 g

Zero display
Command received
Target weight display
Fill with sample until
the display becomes
zero

39

9.

MAINTENANCE

9.1. Treatment Of The Balance
When cleaning, remove the weighing pan and pan support from the balance and attach thewaterproof cover for cleaning the balance.
Do not use organic solvents to clean the balance.
Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or repair.
Use the original packing material for transportation. When packing, fasten the waterproof cover tothe balance using the tape by following the instructions at the figure below.
Consider " 2. UNPACKING THE BALANCE" and “3.PRECAUTIONS” when operation thebalance.

2

1

Remove the weighing pan
and pan support.

3

Waterproof cover for cleaning

Fasten the waterproof coverto the balance using tape.

9.2. Error Codes
Error code

Description

EC,E00Internal error
If displaying this error continuously, contact your local A&D dealer to repair thebalance.

EC,E11

Stability error
The balance can not stabilize due to an environmental problem. Check around thepan. Prevent vibration, drafts, temperature changes, static electricity and magnetic
fields, from influencing the balance. Press the 1CAL1 key to return to the weighing
mode.

EC,E16

Internal weight error
Applying the internal weight does not yield a change in the weighing value as
specified. Confirm that there is nothing on the pan and perform the weighing
operation from the beginning again.

EC,E17

Internal weight error
The internal weight application mechanism does not function properly. Perform theweighing operation from the beginning again.

EC,E20Calibration weight error
The calibration weight is too heavy. Confirm the calibration weighing value. Press
the 1CAL1 key to return to the weighing mode.

EC,E21

Calibration weight error
The calibration weight is too light. Check around the pan. Confirm the calibration
weighing value. Press the 1CAL1 key to return to the weighing mode.
40

Error code
E

E

Description
Overload error
A sample beyond the balance weighing capacity has been placed on the pan.
Remove the sample from the pan.
Underload error
The weighing value is too light. Confirm that the weighing pan and pan support areproperly installed. Press the ON:OFF key two times to return to the weighing mode.
If the error still persists, calibrate the balance.

EC,E00Communications error
A protocol error occurred in communications.
Confirm the format, baud rate and parity.

EC,E01

Undefined command error
An undefined command was received.
Confirm the command.

EC,E02

Not readyA received command can not be processed.
Example:The balance received a "Q" command, but not in the weighing mode.
The balance received a "Q" command while processing a RE-ZERO command.
Adjust the delay time to transmit a command.

EC,E03

Timeout error
If the timeout parameter is set to "t-Up on", the balance did not receive the next
character of a command within the time limit of one second. Confirm thecommunication.

EC,E04

Excess characters error
The balance received excessive characters in a command.
Confirm the command.

EC,E06

Format error
A command includes incorrect data.
Example:The data is numerically incorrect. Confirm the command.

EC,E07

Parameter setting error
The received data exceeds the range that the balance can accept. Confirm theparameter range of the command.

Other errorcode

If an error described above can not be released or other errors are displayed, contact
the local A&D dealer.

41

9.3. Checking The Balance Performance And Environment
The balance is a precision instrument. When the operating environment or the operating method isinadequate, correct weighing can not be performed. Place a sample on the pan and remove it, andrepeat this several times. If the balance seems to have a problem with repeatability or to perform
improperly, check as described below. If improper performance persists after checking, contact the
local A&D dealer for repair.
Checking that the operating environment or weighing method is proper
Operating environment
Is the weighing table solid enough?
Is the balance level?
Is the operating environment free from vibration and drafts?
Is there a strong electrical or magnetic noise source such as a motor near the balance?
Weighing method
Does the weighing pan rim touch anything? Is the weighing pan installed correctly?
Is the RE-ZERO button touched before placing a sample on the weighing pan?
Is the sample placed in the center of the weighing pan?
Has the balance been calibrated using the internal weight (one-touch calibration)?
Has the balance been warmed up for one hour before weighing? (At the AD-4212D-33/32,
duration of four hours or more are required.)
Sample and containerHas the sample absorbed or lost moisture due to the ambient conditions such as temperatureand humidity?
Has the temperature of the container been allowed to equalize to the ambient temperature?
Is the sample charged with static electricity?
Is the sample of magnetic material such as iron? There are cautions about weighing magnetic
materials.
Checking that the balance performs properly
Check the balance performance using an external weight. Be sure to place the weight in thecenter of the weighing pan.
Check the balance repeatability, linearity and calibrated value using external weights with aknown value.
Check whether the calibration is performed correctly. If an error occurs and the calibration can not
be performed quickly, the balance may not measure correctly.

9.4. Asking For Repair
If the balance needs service or repair, contact your local A&D dealer.
The balance is a precision instrument. Use much care when handling the balance and observe thefollowing when transporting the balance.
Use the original packing material for transportation.
Remove the weighing pan, pan support, rings and dust plate from the main unit.

42

10. SPECIFICATIONS
AD-4212D-33
Weighing capacity

32 g

Maximum display

32.000084 g

AD-4212D-32
32 g
5.1 g
32.00008 g
5.100009 g ∗1
0.01 mg0.001 mg0.02 mg
0.004 mg ∗2

Readability

0.001 mg

Repeatability(Standard deviation)

0.002 mg ∗2

Linearity±0.02 mg

±0.03 mg

Stabilization time

Approx. 7
seconds

Approx. 7
seconds(Typical at FAST)

320 g

320 g

320.00084 g

320.0084 g

0.01 mg

0.1 mg0.02 mg ∗30.07 mg ∗3±0.15 mg

±0.25 mgApprox. 7
seconds

Approx. 3
seconds

5 °C to 40 °C, 85 %RH or less (No condensation)

Operating environment

5 times/second or 10 times/second

Display refresh rate

Resolution: Temperature ±1.5 °C, Humidity ±10 %, Air pressure ±10 hPa
Applicable range: 5 °C to 40 °C
Gram, milligram

Display mode
Communication function

RS-232C

External calibration weight

30 g
20 g
10 g
5g
2g
1g

Size of loading area forweighing

Weighing pan:φ34 mm

External dimensions

AD-4212D-301±2 ppm/°C (10 °C to 30 °C)

Sensitivity drift

Environmental sensors

AD-4212D-302

30 g
20 g
10 g
5g
2g
1g

300 g
200 g
100 g
50 g
20 g
10 g

300 g
200 g
100 g
50 g

Weighing pan:φ50 mm

167.5(W) x 298(D) x 90(H) mm

Power consumption: Approx. 30VA (supplied to the AC adapter )Confirm that the adapter type is correct for the local voltage and power
receptacle type.
Current consumption
DC12V Approx. 0.3A (Excluding the AC adapter and options)
Mass
Approx. 3.6kg
The operating environment does not include excessive change of ambient temperature, humidity,
vibration, drafts, magnetic fields and static electricity.
The internal weight may change due to corrosion or other damage caused by the operating
environment, or due to aging. Check the internal weight periodically and correct the internal
weighing value if necessary.
∗1 When placing the tare weight within the standard range, if using the smart range, the weighing
sample can be weighed within the precision range.
∗2 This is a figure measured by loading and unloading a 1g weight on the device using the automatic
machine.
Power supply &AC adapter type

∗3 The repeatability for 10 gram within the weighing capacity.

43

11.

EXTERNAL DIMENSIONS
90
82.5 ± 1

AD-4212D-33/32

32.8

167.5

26

34

Pan support
dimensions

26
10

4-M3

2- 3.4 hole

3-M6
When securing,use the M5screws.

14.5

56.5

11

0.5

16

298

262 ± 0.2

(6.5)

Size of whenconnected.
Approx.50

286
275

71.9

(6.5)
13

153
133 ± 0.2

Unit: mm44

AD-4212D-302/301

φ50

Pan support
dimensions
26
φ48.8

167.5

94
82.5 ± 1

26
10

4-M3

2- φ3.6 hole153
133 ± 0.2

3-M6

(6.5)
13

56.5

11 0.5

298

16

286

275
262 ± 0.2

71.9

φ 50

Size of whenconnected.
Approx.50

14.5

When securing,use the M5screws.

Unit: mm45

167.5
158

When attaching the small breeze break on the AD-4212D series(15.4)

80
Inside dimension
from the weighing
pan

170

68

7.5

286

145 (Inside dimension)

145 (Inside dimension)

94.5

158

Inside dimensions of the small breeze break(When removing the breeze break cover)

Unit: mm46

12. OPTIONS
AX-KO3590-1000 (For external display) RS-232C cable 10m
AX-KO4472-1000 (For PC､PLC) RS-232C cable 10m
AX-KO4472-150 (For PC､PLC) RS-232C cable 1.5m
AX-USB-9P: USB converter/Cable set
 USB converter (D-Sub 9 pin - USB) RS-232C cable (D-Sub 9 pin - D-Sub 9-pin)* This RS-232C cable is not used with the AD-4212D series.

AD-8922A: Remote controller
 The AD-8922A can receive the weighing data, and performs
re-zero and calibration manually.
 The AD-8922A can output the data using BCD (AD-8922A01), comparator (AD-8922A-04), or analog out (AD-8922A06), by selection of the option installed in the AD-8922A.
AD-8923-BCD/CC: Remote controller
 The AD-8923-BCD or AD-8923-CC can receive theweighing data, and performs re-zero and calibration
manually.
 The AD-8923-BCD can output the data using BCD.
The AD-8923-CC can output the data using CC-Link.

AD-8526: Ethernet converter The AD-8526 can convert the AD-4212D RS-232C data, for
output to a local area network (LAN).

AD-1683 /AD-1683A: DC static eliminator Statistic eliminator that prevents error which can becaused when weighing samples are electricallycharged.
 It’s direct-current system and plentiful ion content
enable weighing without breeze, which is ideallysuited for preciousely measuring powder and such.
 The built-in IR Sensor enables removal of static electricity in a touchless way.(AD-1683A only)47

AD-1684A: Electrostatic field meter This option measures the amount of the static charge on
the sample, tare or peripheral equipment and displays theresult.
If those are found to be charged, discharge them using
an ionizer such as AD-1683A.

AD-8127: Compact printer Small dot impact printer that connects with the balance
via the RS-232C interface.
 Equipped with a statistical calculation mode,calendar/clock function, interval printing mode, chart
printing mode, dump printing mode48

13. TERMS
Terms
Stable value
Environment

The weighing value when the stabilization indicator appears.
Ambient conditions such as vibration, drafts, temperature, static electricity ormagnetic fields which affect the weighing operation.
Calibration
Adjustment of the balance using the calibration weight so that it can weighaccurately.
OutputTo output the weighing data using the RS-232C interface.
Span value
A value where the zero point is subtracted from the weighing value when placing
the sample on the weighing pan.
Zero point
A weighing reference point or the zero display. Usually refers to the value displayedwhen nothing is on the weighing pan.
Digit
Unit of minimum display. Used for the balance, the minimum displayable weighing value.
Tare
To cancel the weight of a container which is not included in the weighing data.
Re-zeroTo set the display to zero.
GLP
Good Laboratory Practice.
Repeatability
Variation in measured values obtained when the same weight is placed andremoved repetitively. Usually expressed as a standard deviation.
e.g. Standard deviation=1 digit: This means that the measured values fall within±1 digit at a probability of about 68%.
Stabilization time Time required after a sample being placed, until the stabilization indicatorilluminates and the weighing data is displayed.
Sensitivity drift An affect that a change in temperature causes to the weighing data. Expressed as
temperature coefficient.
e.g. Temperature coefficient = 2 ppm/°C : If a load is 100 g and the temperaturechanges by 10°C, the value displayed changes by the following value.
0.0002%/°C x 10°C x 100 g = 2 mg

49

MEMO

50

A&D Company, Limited
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPANFax: [81] (3) 5391-1566
Telephone: [81] (3) 5391-6132

A&D ENGINEERING, INC.
4622 Runway Boulevard, Ann Arbor, Michigan 48108, U.S.A.
Telephone: [1] (800) 726-3364

A&D INSTRUMENTS LIMITED
Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire OX14 1DY United Kingdom
Telephone: [44] (1235) 550420
Fax: [44] (1235) 550485

A&D AUSTRALASIA PTY LTD
32 Dew Street, Thebarton, South Australia 5031, AUSTRALIA
Telephone: [61] (8) 8301-8100
Fax: [61] (8) 8352-7409

A&D KOREA Limited

한국에이.엔.디(주)서울특별시 영등포구 국제금융로6길33 (여의도동) 맨하탄빌딩 817 우편 번호 07331( 817, Manhattan Bldg., 33. Gukjegeumyung-ro 6-gil, Yeongdeungpo-gu, Seoul, 07331 Korea )전화: [82] (2) 780-4101
팩스: [82] (2) 782-4264

OOO A&D RUS

OOO "ЭЙ энд ДИ РУС"Почтовый адрес:121357, Российская Федерация, г.Москва, ул. Верейская, дом 17Юридический адрес: 117545, Российская Федерация, г. Москва, ул. Дорожная, д.3, корп.6, комн. 8б
( 121357, Russian Federation, Moscow, Vereyskaya Street 17 )тел.: [7] (495) 937-33-44
факс: [7] (495) 937-55-66

A&D Instruments India Private Limited( 509, Udyog Vihar, Phase- , Gurgaon - 122016, Haryana, India ): [91] (124) 4715555: [91] (124) 4715599

A&D SCIENTECH TAIWAN LIMITED.

A&D台灣分公司 艾安得股份有限公司

台湾台北市中正區青島東路 5 號 4 樓
( 4F No.5 Ching Tao East Road, Taipei Taiwan R.O.C. )Tel : [886](02) 2322-4722
Fax : [886](02) 2392-1794

A&D INSTRUMENTS (THAILAND) LIMITEDบริษัท เอ แอนด ดี อินสทรูเมนท (ไทยแลนด) จํากัด
168/16 หมูที่ 1 ตําบลรังสิต อําเภอธัญบุรี จังหวัดปทุมธานี 12110 ประเทศไทย
( 168/16 Moo 1, Rangsit, Thanyaburi, Pathumthani 12110 Thailand )Tel : [66] 20038911