A&D BM-20 User Manual

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1WMPD4002195A

Analytical Balance

BM-20 BM-22 BM-252 BM-200 BM-300 BM-500

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© 2010 A&D Company Ltd. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or translated into any language in any form by any means without the written permission of A&D Company Ltd.

The contents of this manual and the specifications of the instrument covered by this manual are subject to change for improvement without notice.

Windows, Word and Excel are registered trademarks of the Microsoft Corporation.

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Contents

Basic Operation

1. Introduction.............................................................................................................................. 3

1.1. Features............................................................................................................................... 4

1.2. Compliance.......................................................................................................................... 5

2. Unpacking The Balance.......................................................................................................... 6

3. Installing The Balance And Precautions ................................................................................. 8

3.1. Installing The Balance ......................................................................................................... 8

3.2. Precautions Before Use (Environmental Condition And Preparations) ............................ 10

3.3. Cautions During Use (For Precision Weighing) ................................................................ 11

3.4. Cautions After Use (Management Of The Balance) ......................................................... 12

3.5. Cautions For Power Supply............................................................................................... 12

4. Display Symbols And Key Operation.................................................................................... 13

5. Weighing Units ...................................................................................................................... 14

5.1. Units................................................................................................................................... 14

5.2. Storing Active Units............................................................................................................17

5.3. Selecting Unit And Weighing Mode................................................................................... 18

6. Weighing................................................................................................................................ 20

6.1. Basic Operation (Gram Mode) .......................................................................................... 20

6.2. Smart Range For BM-22 ................................................................................................... 21

6.3. Counting Mode (PC).......................................................................................................... 22

6.4. Percent Mode (%).............................................................................................................. 24

6.5. Built-in DC Static Eliminator (Neutralization Device)......................................................... 25

6.6. Monitoring Clock and Environmental Sensors.................................................................. 27

6.7. Repeatability Test............................................................................................................... 28

Adapting To The Environment

7. Response Adjustment........................................................................................................... 29

7.1. Automatic Response Adjustment ...................................................................................... 29

7.2. Manual Response Adjustment .......................................................................................... 30

8. Calibration (To Adjust The Weighing Value).......................................................................... 31

8.1. Calibration Group...............................................................................................................31

8.2. Automatic Self Calibration (For variation of ambient temperature)................................... 32

8.3. One-Touch Calibration (For Common Use) ...................................................................... 32

8.4. Calibration Test Using the Internal Mass........................................................................... 33

8.5. Calibration Using An External Weight ............................................................................... 34

8.6. Calibration Test Using An External Weight........................................................................ 35

8.7. Correcting The Internal Mass Value .................................................................................. 36

9. Function Switch And Initialization.......................................................................................... 37

9.1. Permit Or Inhibit................................................................................................................. 37

9.2. Initializing The Balance...................................................................................................... 38

Selecting Functions

10. Function Table ....................................................................................................................... 39

10.1. Setting The Function Table ................................................................................................ 39

10.2. Details Of The Function Table ........................................................................................... 41

10.3. Description Of The Class "Environment, Display"............................................................. 43

BM series 1

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10.4. Description Of The Item "Data Output Mode" ................................................................... 45

10.5. Description Of The Item "Data Format"............................................................................. 46

10.6. Data Format Examples...................................................................................................... 49

10.7. Clock And Calendar Function............................................................................................ 51

11. ID Number And GLP Report ................................................................................................. 52

11.1. Setting The ID Number...................................................................................................... 52

11.2. GLP Report........................................................................................................................ 53

12. Data Memory......................................................................................................................... 58

12.1. Notes On Using Data Memory .......................................................................................... 58

12.2. Data Memory For Weighing Data...................................................................................... 59

12.3. Data Memory For Calibration And Calibration Test ........................................................... 62

13. Underhook............................................................................................................................. 63

14. Density Measurement (Specific gravity) ............................................................................... 64

Interface And Communication

15. Standard Input And Output Interface..................................................................................... 67

15.1. RS-232C Interface............................................................................................................. 67

15.2. Connection To Peripheral Equipment................................................................................ 68

15.3. Commands ........................................................................................................................71

Maintenance

16. Maintenance.......................................................................................................................... 76

16.1. Treatment Of The Balance ................................................................................................ 76

16.2. Error Codes ....................................................................................................................... 76

16.3. Other Display..................................................................................................................... 78

16.4. Checking The Balance Performance And Environment ................................................... 79

16.5. Asking For Repair .............................................................................................................. 79

17. Specifications ........................................................................................................................ 80

17.1. External Dimensions.......................................................................................................... 81

17.2. Options And Peripheral Equipment................................................................................... 82

18. Terms/Index........................................................................................................................... 86

18.1. Terms ................................................................................................................................. 86

18.2. Index .................................................................................................................................. 87

2 BM series

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1. Introduction

This manual describes how the BM series balances work and how to get the most out of them in

terms of performance. Read this manual thoroughly before using the balance and keep it at hand for future reference.

About This Manual

This manual consists of the following five parts:

Basic operation

Adapting to the environment

Selecting functions

Interface and communication

Maintenance

..............................

..........................

..................................

...........

..........

Describes precautions, the balance's construction and basic operation.

Describes response (and stability) adjustment to adapt to the environment where there is vibration or drafts, the way to maintain weighing precision in a variation of ambient temperature, calibration and calibration test.

Describes functions of the balance.

Describes the serial interface used for communicating with a computer that requests weighing data and controls the balance, and for use with a printer

Describes maintenance, error codes, troubleshooting, specifications and options.

BM series 3

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1.1. Features

A built-in DC static eliminator can eliminate static electricity from the weighing sample before the

measurement, reducing weighing error.

Each electrode unit of the eliminator is designed to be removed, cleaned and replaced.

Automatic self calibration, using the internal mass, adapting to changes to temperature changes.

Response adjustment adapting to drafts and/or vibration automatically.

Memory function to store weighing data and calibration data.

When only weighing data is stored, a maximum of 200 data can be stored. Interval mode to store the weighing data periodically.

Good laboratory practice (GLP) data can be output using the RS-232C serial interface.

A built-in clock and calendar that can add the time and date to the output data.

Underhook, for measuring density and weighing magnetic materials.

Multiple weighing units with most of the common units used around the world.

Gram, Milligram, Counting mode, Percent mode, Ounce (Avoir), Troy Ounce, Metric carat, Momme, Pennyweight, Grain (UK), Tael (preset in the factory), Tola (India), Messghal, Density mode

BM-22 is equipped with a smart range function to weigh with the precision range (a higher

resolution) when zeroing a tare weight within the weighing capacity.

The test tube holder is included in the accessories of BM-20 and BM-22.

Density mode for calculating the density of a solid.

BM series balances are equipped with an RS-232C serial interface and a USB interface to

communicate with a computer. When printing data using the RS-232C interface, by using the USB interface, the data can be transmitted to a computer at the same time. Communications between the BM series balance using the RS-232C interface and a Windows computer using the Windows communication tools software (WinCT) make building a system very easy.

Connecting the USB interface of the balance, by cable to a Windows computer, allows

transmission of the weighing data to Excel or Word.

When multiple balances have the BM-08 Ethernet interface installed in place of the USB interface

and connected to a LAN, data can be acquired from each of them using the WinCT-Plus software.

The weighing data can be stored by connecting the accessory data logger (AD-1688) directly,

when not using a computer.

4 BM series

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1.2. Compliance

1.2.1. Compliance With FCC Rules

Please note that this equipment generates, uses and can radiate radio frequency energy. This

equipment has been tested and has been found to comply with the limits of a Class A computing device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed to provide reasonable protection against interference when equipment is operated in a commercial environment. If this unit is operated in a residential area, it may cause some interference and under these circumstances the user would be required to take, at his own expense, whatever measures are necessary to eliminate the interference.

(FCC = Federal Communications Commission in the U.S.A.)

1.2.2. Compliance With EMC Directives

This device features radio interference suppression and safety regulation in compliance

with the following Council Directives Council directive 89/336/EEC EN61326 EMC directive Council directive 73/23/EEC EN60950 Safety of Information Technology Equipment

The CE mark is an official mandatory European marking.

Please note that any electronic product must comply with local laws and regulations when sold or used anywhere outside Europe.

BM series 5

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2. Unpacking The Balance

Unpack the balance carefully. Keep the packing material to be used for transporting the balance

in the future. See the illustrations to confirm that everything is contained.

Parts For Each Products

BM-22, BM-20

Small weighing Large weighing pan for filter pan for filter

Weighing pan Pan support Test tube holder

Small fine range ring

Fine range ring Tweezers Dust plate AX-MX-36

φ15, 0.8 φ12, 0.3 φ8, 0.05 Large Medium Small Round aluminum analytical pans (

each 10 pieces

BM-252

Weighing pan Pan support

Fine range ring

Breeze break ring

Dust plate

)

BM-500, BM-300,

BM-200

Weighing pan

Pan support

Breeze break ring

Dust plate

Common Parts

AC adapter AC adapter labels

Note Please confirm that the AC adapter type is correct for your local voltage and receptacle type.

USB cable

6 BM series

Position of placing AC adapter labels

Display cover

Windows communication

software (WinCT)

Separation plate

If unnecessary, remove it.

D-sub 9pins

Data logger

AD-1688 The weighing data can be stored when connecting the data logger directly.

Tweezers

AD-1689 Tweezers for handling a weight. Use it to avoid temperature changes due to having your hand in the weighing chamber, thus to perform accurate calibration.

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The DC Static eliminator

Electrode units of the DC static eliminator

Separation plate

If unnecessary, remove it.

Leveling foot

oint handle

When jointing the right (left) slide door handle, the right (left) glass door can be opened or closed with the left (right) joint handle.

Bubble spirit level

Glass door handle

The handle for the glass door. The handle can be joined to the joint handle

USB interface

AC adaptor jack

External key jack

Cap the terminal with accessory rubber cap when it is not used.

Serial interface RS-232C

D-sub 9 pins

Anti theft device

Grounding terminal

LED of the static eliminator

Glass door handle

Neutralization

area

Example of BM-20

Weighing

chamber

Display

Keys

Display cover

BM series 7

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3. Installing The Balance And Precautions

3.1. Installing The Balance

Step

1 Refer to "3.2. Precautions Before Use (Environmental Condition And Preparations)"

concerning the place to install the balance. Place the balance on a firm weighing table.

Step

2 Assemble the weighing pan and other parts in the weighing chamber, in accordance with the

product type and use.

BM-500, BM-300, BM-200 BM-252

Weighing pan

Pan support

Breeze break ring

Dust plate

BM-22, BM-20

Test tube holder

Large weighing pan for filter

Small weighing pan for filter

Weighing pan

Pan support

Small fine range ring

Fine range ring

Dust plate

Use the fine range ring to avoid errors caused by drafts when weighing with a minimum display of 0.01 mg.

Fine range ring

Choose the weighing pan to adapt to the filter size.

8 BM series

Use the holder for micro tube or test tube of φ12 mm or less.

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Step

3 If the separation plate is not necessary, remove

the screw and take it off. Refer to next page "The Separation Plate".

Step

4 Adjust the level of the balance using the leveling feet.

Step

5 Confirm that the AC adaptor type is correct for your

local voltage and power receptacle type.

Step

6 Connect the specified AC adapter to the balance.

Warm up the balance for at least one hour with nothing on the weighing pan.

Step

7 Confirm correct weighing. If necessary, calibrate

the balance. Refer to "8. Calibration".

BM-200, BM-300, BM-500, BM-252

Leveling foot

Bubble spirit level

Note Please confirm that the AC adapter

type is correct for your local voltage and receptacle type.

Example of outlet

Separation plate

Screw

Hoo

BM-252

BM-22, BM-20

C adaptor jac

Grounding terminal

BM series 9

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The Separation Plate

Note: Take care that the separation plate is not broken when operating it.

Removing the Separation Plate

Step

1 Support the separation plate and

remove the screw from the plate.

Step

2 Lift the plate and remove hooks.

Step

3 Rotate the plate on the axis of the back edge.

Rotate the plate on the axis of the front edge.

Step

4 Remove the plate from the chamber.

Screw

Hoo

Step

Attaching the Separation Plate

Use the arrows in reverse to attach the plate.

Step

5 Insert the plate into the chamber. (Reversed

Step

6 Rotate the plate on the axis of the front edge.

Level the plate. (Reversed

Step

Step Step

Step

1 2

Step

7 Insert hooks and hook the plate. (Reversed

Step

8 Install and fix the screw. (Reversed

Step

Hoo

Separation plate

3.2. Precautions Before Use (Environmental Condition And Preparations)

To ensure that you get the most from your balance, please try to follow these conditions as closely as

possible. Consider these conditions for BM-20 and BM-22 that are sensitive instrument specially.

The best operating temperature is about 20°C / 68°F at about 50% Relative Humidity.

The weighing room should be free of dust.

The weighing table should be solid and free from vibration, drafts (such as frequently opening

doors or windows) and as level as possible. We recommend to use the anti-vibration table (AD-1670) and remote controller (AD-8922A) for BM-20 and BM-22.

Do not install the balance where it will be subject to vibration. Corners of rooms are best.

Do not install the balance near a heater, air conditioner, or in a breeze.

Do not install the balance in direct sunlight and excessive temperature changes.

Do not use the balance near other equipment which produces magnetic fields.

Adjust the level of the balance using the leveling feet.

Please warm-up the balance for at least one hour. Plug-in the AC adapter as usual.

Calibrate the balance before using and after moving it to another location.

Ensure a stable power source when using the AC adapter.

Do not place or use the balance where there is flammable or corrosive gas present.

10 BM series

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3.3. Cautions During Use (For Precision Weighing)

Note the following items to get accurate weighing data.

Discharge static electricity from the weighing material. When

weighing sample (plastics, insulator, etc.) could have a static

charge, the weight value is influenced. Ground the balance, and Eliminate the static electricity using the built-in static eliminator. Try to keep the ambient humidity at or above 45%RH in the room. Use a metal shield case. Wipe a charged material (plastic sample etc.) with a damp cloth.

This balance uses a strong magnet as part of the balance assembly,

so please use caution when weighing magnetic materials. If there is

a problem, use the underhook (on the bottom of the balance) to

suspend the material away from the influence of the magnet.

Eliminate temperature differences between the weighed sample and

the environment. When a sample is warmer (cooler) than the ambient

temperature, the sample will appear lighter (heavier) than the true

mass. This error is due to the rising (falling) draft next the sample. If

you touch the sample, the same type error will occur. Do not touch the

sample directly with your hand. Use tweezers or other tools.

Charged material

Metal case

Grounding

Magnet material

Draft

40°C 20°C

Weighing pan

Do not drop things upon the weighing pan, or place a weight

beyond the range of the balance on the weighing pan.

Make each weighing gently and quickly to avoid errors due to

changes in the environmental conditions.

We recommend that the fine range ring and separation plate are

used to avoid weighing error caused by drafts when BM-252 displays

a weighing value in unit of 0.01 mg (minimum display: 0.01 mg).

We recommend that the small fine range ring, fine range ring

and separation plate are used to avoid weighing error caused by

drafts when BM-22 and BM-20 display a weighing value in unit of

0.01 mg and 0.001 mg (minimum display: 0.01 mg and 0.001 mg).

Take into consideration the affect of air buoyancy on a sample

when more accuracy is required.

Do not use a sharp instrument (such as a pencil or ball point pen) to

press the keys, use your finger only.

Press the RE-ZERO key before each weighing to prevent possible

errors.

Shock

Fine range ring

BM-252

Small fine range ring Fine range ring

BM-20 BM-22

Avoid foreign matter (dust, liquid or metal fragments) that could get

inside the balance.

Operate your balance gently. Shorten the operation time as much

as possible (Opening and closing door, putting and removing

sample). Use a pair of tweezers to avoid temperature changes due

to heat from inserting your hand into the weighing chamber.

BM series 11

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3.4. Cautions After Use (Management Of The Balance)

Avoid mechanical shock to your balance.

Do not disassemble the balance. Contact your local A&D dealer if your balance needs service

or repair.

Do not use solvents to clean the balance. For best cleaning, wipe with a dry lint free cloth or a

lint free cloth that is moistened with warm water and a mild detergent.

Avoid foreign matter (dust, liquid or metal fragments) that could get inside the balance.

3.5. Cautions For Power Supply

Do not remove the AC adapter while the internal mass is in motion, for example, right after the

AC adapter is connected, or during calibration using the internal mass.

If the AC adapter is removed under the conditions described above, the internal mass will be

left unsecured, that may cause mechanical damage when the balance is moved.

Before removing the AC adapter, confirm that zero is displayed in the weighing mode, then

press the ON:OFF key.

When the AC adapter is connected, the balance is in the standby mode if the standby indicator

is on. This is a normal state and does not harm the balance. For accurate weighing, we

recommend that you always plug in your balance so it can warm up.

Connect the AC adapter for BM-22 and BM-20 normally.

12 BM series

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4. Display Symbols And Key Operation

Display

Processing indicator Weighing in liquid of density mode

Stabilization indicator

Standby indicator of power suppl

Weighing data or stored data The current data numbe

Weighing in air of density mode

rior notice indicator of

automatic self calibration

The interval memory function is used to store periodical weighing data. Refer to "12. Data Memory".

Blinking indicators

The amount of stored data with data memory function Humidity (%)

Response indicator for approx. 30 seconds when weighing starts.

Right and left glass door indicato Air pressure (hPa)

Standby indicator of interval memory function

Indicator of static eliminato

Units. Refer to "5. WeighingUnits".

ctive indicator of

interval memory function

Key Operation

Press and release the key immediately or "Click the key"

Press and hold the key

.......................................................................................................................

..................................................................

Key When pressed and released When pressed and held

The key to turn the display ON and OFF. The standby indicator is displayed when the display is turned off. The weighing mode is enabled when the display is turned on. This key is available anytime. Pressing the key during operation will interrupt the operation and turn the display OFF.

The key to perform calibration using the internal mass.

The key to switch the preset weighing units stored in the function table. Refer to "5. Weighing Units".

In the weighing mode, the key to turn the

minimum weighing value ON and OFF.

In the counting or percent mode, the key

to enter the sampling mode.

The key to outputs the weighing data to a printer or personal computer (or store it in memory) depending on the function table settings. (Factory setting = output)

The key to display other items of the calibration menu.

The key to perform automatic response adjustment.

The key to enter the function table mode or repeatability test mode. Refer to "10. Function Table" or "6.7. Repeatability Test".

No function at factory setting. By changing the function table:

"Title block" and "End block" for GLP

report are output.

The data memory menu is displayed.

The key to set the display to zero.

The key to turn the static eliminator ON and OFF.

The key to monitor the date and time, and the environmental sensors (temperature, humidity, air pressure), for several seconds. Refer to "6.6. Monitoring Clock and Environmental Sensors".

BM series 13

Page 16

5. Weighing Units

5.1. Units

The units and weighing modes can be selected and stored in the function table as described in

"5.2. Storing The Active Units".

The sequence of displaying them can be arranged to fit the frequency of use.

They are stored and are maintained in non-volatile memory, even if the AC adapter is removed.

If the law in your area permits, you may use all of the units. You can disable the units that you

don't regularly use. And you are able to turn them back on.

If a weighing mode (or unit of mass) has been turned off, that mode or unit will be missing in the

sequence. Tael has four varieties, one of which can be selected and installed at the factory.

Press the MODE key to select a unit or mode for weighing.

For details about the units and modes, see the table below:

Name (unit, mode) Abbreviation Display unit Conversion factor

Gram g

Milligram mg 0.001 g

Counting mode PC -

Percent mode % -

Ounce (Avoir) oz 28.349523125 g

Troy Ounce ozt 31.1034768 g

Metric Carat ct 0.2 g

Momme mom 3.75 g

Pennyweight dwt 1.55517384 g

Grain (UK) GN 0.06479891 g

Tael (HK general, Singapore) 37.7994 g

Tael (HK jewelry) 37.429 g

Tael (Taiwan) 37.5 g

Tael (China)

Tola (India) t 11.6638038 g

Messghal m 4.6875 g

1 g

31.25 g

Density mode DS Refer to "14. Density Measurement"

Density mode

To use the density mode, it must be stored in the function table as described on page 17.

For details about this mode, refer to "14. Density Measurement".

To select this mode, press the MODE key until the processing indictor blinks with the unit

"g" displayed.

14 BM series

Page 17

Capacity And Minimum Display For BM-252, BM-500, BM-300, BM-200

The tables below indicate the weighing capacity and the minimum display for each balance.

Unit

Gram 520 320 220 0.0001

Milligram 520000 320000 220000 0.1

Ounce (Avoir) 18.34 11.29 7.76 0.00001

Troy Ounce 16.72 10.29 7.07 0.00001

Metric Carat 2600 1600 1100 0.001

Momme 138.7 85.3 58.7 0.0001

Pennyweight 334.4 205.8 141.5 0.0001

Grain (UK) 8024 4938 3395 0.002

Tael (HK general, Singapore) 13.76 8.47 5.82 0.00001

Tael (HK jewelry) 13.89 8.55 5.88 0.00001

Tael (Taiwan) 13.87 8.53 5.87 0.00001

Tael (China) 16.64 10.24 7.04 0.00001

Tola (India) 44.58 27.44 18.86 0.00001

Messghal 110.9 68.3 46.9 0.0001

BM-500 BM-300 BM-200

Capacity Minimum display

Unit

Capacity Minimum display

Gram 250 0.00001

Milligram 250000 0.01

Ounce (Avoir) 8.82 0.000001

Troy Ounce 8.03 0.000001

Metric Carat 1250 0.0001

Momme 66.67 0.00001

Pennyweight 160.7 0.00001

Grain (UK) 3858 0.0002

Tael (HK general, Singapore) 6.61 0.000001

Tael (HK jewelry) 6.68 0.000001

Tael (Taiwan) 6.67 0.000001

Tael (China) 8.00 0.000001

Tola (India) 21.43 0.000001

BM-252

Messghal 53.3 0.00001

BM series 15

Page 18

Capacity And Minimum Display For BM-22, BM-20

BM-22 is equipped the precision range and standard range of the smart range function.

BM-20

Unit

Gram 22 0.000001

Milligram 22000 0.001

Ounce (Avoir) 0.776 0.0000001

Troy Ounce 0.707 0.0000001

Metric Carat 110 0.00001

Momme 5.87 0.000001

Pennyweight 14.15 0.000001

Grain (UK) 339.5 0.00002

Tael (HK general, Singapore) 0.582 0.0000001

Tael (HK jewelry) 0.588 0.0000001

Tael (Taiwan) 0.587 0.0000001

Tael (China) 0.704 0.0000001

Tola (India) 1.886 0.0000001

Messghal 4.69 0.000001

Precision range

Capacity Minimum display

BM-22

Unit

Gram 5.1 0.000001 22 0.00001

Milligram 5100 0.001 22000 0.01

Ounce (Avoir) 0.180 0.0000001 0.776 0.000001

Troy Ounce 0.164 0.0000001 0.707 0.000001

Metric Carat 25.5 0.00001 110 0.0001

Momme 1.36 0.000001 5.87 0.00001

Pennyweight 3.28 0.000001 14.15 0.00001

Grain (UK) 78.71 0.00002 339.5 0.0002

Tael (HK general, Singapore) 0.135 0.0000001 0.582 0.000001

Tael (HK jewelry) 0.136 0.0000001 0.588 0.000001

Tael (Taiwan) 0.136 0.0000001 0.587 0.000001

Tael (China) 0.163 0.0000001 0.704 0.000001

Precision range Standard range

Capacity Minimum display Capacity Minimum display

Tola (India) 0.437 0.0000001 1.886 0.000001

Messghal 1.09 0.000001 4.69 0.00001

16 BM series

Page 19

5.2. Storing Active Units

The units and modes can be selected and stored in the function table.

The sequence of displaying them can be arranged to fit the frequency of use.

The units stored are maintained in non-volatile memory, even if the AC adapter is removed.

1 Press and hold the RANGE key until ba5fnc of

the function table is displayed in the weighing mode,

then release the key.

2 Press the RANGE key several times to display Unit .

3 Press the PRINT key to enter the unit selection mode.

4 Specify a unit or mode in the order to be displayed

using the following keys. RANGE key RE-ZERO key

Examples

Gram g

Milligram mg

.........

To display the units sequentially.

......

To specify a unit or mode. The indicator appears when the displayed unit or mode is specified.

Unit Display

The indicator is displayed at the units specified.

Press and hold

Press several time

Selection ke

Example

Specify the uni

Counting mode PC

Percent mode %

Density mode DS

5 Press the PRINT key to store the units or modes.

The balance displays end and then displays the next

menu item of the function table.

6 Press the CAL key to exit the function table.

Then the balance returns to the weighing mode with the

selected unit.

Store them

BM series 17

Page 20

5.3. Selecting Unit And Weighing Mode

Preset the sequence of displaying units and

weighing modes to fit the frequency of use.

Refer to "5.2 . Storing The Active Units".

Pressing the MODE key in the weighing mode,

the unit and weighing mode can be displayed in

order.

BM-22 and BM-20 are preset units in the

factory. (Milligram), (Gram) is displayed

in order.

For BM-252, BM-500, BM-300 and BM-200

are preset units in the factory.

(Gram), (Milligram) is displayed in order.

Density mode

To use the density mode, it must be stored in

the function table as described on page 17. Refer to "14. Density Measurement" for details about the mode.

To select this mode, press the MODE key

until the processing indictor blinks with the unit "g" displayed.

The unit sequence of the factory settings.

Turning on the display.

BM-252 BM-500 BM-20 BM-300 BM-22 BM-200

Counting mode

Percent mode

Ounce (Avoir)

Troy Ounce

Metric Cara

Momme

Pennyweigh

Grain (UK)

Tael

Tola (India)

Messghal

Density mode

18 BM series

Page 21

5.3.1. Unit Setting Example

The example below sets the units in the order with g (gram) as the first unit followed by PC

(counting mode).

1 Press and hold the RANGE key until ba5fnc of the

function table is displayed in the weighing mode, then release the key.

2 Press the RANGE key several times to display Unit .

3 Press the PRINT key to enter the unit selection mode.

4 Press the RE-ZERO key to specify the unit of g.

The stabilization indicator appears when the unit is specified.

5 Press the RANGE key several times to display Unit .

6 Press the RE-ZERO key to specify the unit of pcs.

The stabilization indicator appears when the unit is specified.

7 Press the PRINT key to store the units.

The balance displays end and then displays the next menu item of the function table.

8 Press the CAL key to exit the function table. Then the

balance returns to the weighing mode with g, the unit selected first.

9 Press the MODE key to switch between g and PC.

Specify counting mod

Press and hold

Press several time

Specify gram

Press several time

Store them

BM series 19

Page 22

6. Weighing

Precautions for the weighing operation

Press the RE-ZERO key each time, before placing a sample on the weighing pan, to prevent

possible errors. Place a sample in the center of the weighing pan gently. Temperature changes during measurement may cause weighing error. Shorten the operation time as much as possible. ( Use a pair of tweezers to avoid a temperature change due to having your hand in the weighing

chamber.

Material with an electrostatic charge or that is magnetic may cause a weighing error. Do not press keys with a sharp instrument (such as a pencil or ball point pen). Do not drop things on the pan, or place a weight on the pan that is beyond the weighing range. Calibrate your balance periodically to maintain weighing accuracy. Refer to section "8. Calibration". Keep the area clean and dry. Consider section "3. Precautions" for the weighing operation. For precision weighing, keep the AC adapter connected to the balance.

6.1. Basic Operation (Gram Mode)

Opening and closing door, putting and removing sample)

Refer to section "4. Display symbols and Key operation" before operation.

Note When turning on the balance with a tare weight placed on

the pan, the balance automatically displays the zero display.

1 Turn on the balance using the ON:OFF key.

2 Select a preset unit using the MODE key, if necessary.

3 Place the tare (container) on the weighing pan, if necessary. Press the RE-ZERO key to cancel the tare weight.

Then zero is displayed.

Tare : A vessel placed on the pan, but not

to be included in the weighing data. Example: Container.

4 Place a sample on the pan or in the container.

Close the door.

5 Wait for the stabilization indicator to be

displayed, then read the value.

6 Remove the sample and container from the pan.

Stabilization

indicator

Zero displa

Close door

tabilization

indicato

Press the key

to select a unit,

if necessary.

Ta r e

(Container)

Weighing pan

Sample

Glass door is

not closed

Information

Remove them

20 BM series

Page 23

6.2. Smart Range For BM-22

The smart range for BM-22 consists of the standard range and precision range (high resolution). Smart range function

These ranges can be switched by the weighing value automatically. When placing the tare weight within the standard range, if pressing the RE-ZERO key, the

weighing sample can be weighed within the precision range.

When pressing RANGE key, the current range is fixed to the standard range.

Example

1 Press the RE-ZERO key to use the precision range.

The balance displays zero.

2 Place the container (tare) on the weighing pan.

When mass of the container (tare) is within the standard range, the current range is automatically switched to the standard range.

3 Press the RE-ZERO key to use the precision range.

The balance displays zero.

4 Place the weighing sample in the container (tare).

When the sample is within the precision range, the weighing value can be read in high resolution.

Precision range

Container (Tare)

Standard range

Precision range

Weighing matte

Precision range

Precision Range And Standard Range For BM-22

Unit Precision range Standard range

Milligram 0.000 to 5100.009 5100.01 to 22000.84

Gram 0.000000 to 5.100009 5.10001 to 22.00084

Refer to page 14 for other units.

BM series 21

Page 24

6.3. Counting Mode (PC)

This is the mode to determine the number of objects in a sample based on the standard sample

unit mass. The unit mass means an average mass of the samples. The smaller the variation in

the samples, the more accurate the count will be. The balance is equipped with the Automatic

Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.

Notes

Use samples with a unit mass of 1 mg or more for counting. If the sample unit mass variable is too large, it may cause a counting error. To improve the counting performance, use the ACAI function frequently or divide the samples into

several groups and count each group.

Selecting the counting mode

1 Press the MODE key to select the unit (counting mode).

Storing a sample unit mass (Weighing input mode)

2 Press the RANGE key to enter the sample unit mass storing mode.

3 Select the number of samples using the RANGE key.

It may be set to 10, 25, 50 or 100.

Advise

4 Place a tare (container) on the weighing pan, if necessary.

A greater number of samples will yield more accurate

counting result.

Press the RE-ZERO key to cancel the weight (tare).

The number specified in step 3 appears.

Example

: 25 0 is displayed if 25 is selected in step 3.

Weighing pan

Tare

(Container)

5 Place the number of samples specified on the pan.

In this example, 25 pieces.

6 Wait for the stabilization indicator to be displayed.

Press the PRINT key to calculate and store the unit mass.

Then the balance displays 25 and is set to count samples

with this unit mass. To improve the accuracy of the unit mass,

proceed to step 8.

Notes

If the balance judges that the mass of the samples is too light to

acquire accurate weighing, it displays an error requiring the

addition of more samples to the specified number.

Example: 50 - appears, requiring 25 more samples. Add

25 samples and press the PRINT key. When the unit mass is

stored correctly, the balance proceeds to the counting mode.

If the balance judges that the mass of the samples is too light (

0.0001g

The sample unit mass is stored in non-volatile memory, and is

maintained even if the AC adapter is removed.

) and can not be stored as the unit mass, it displays lo .

under

25 samples

Step

8 when using

the ACAI function.

Place samples

Counting Operation

7 Place the samples to be counted on the pan.

Read the result and remove them from the pan.

22 BM series

Counting result

Page 25

Counting mode using the ACAI function

The ACAI is a function that improves the accuracy of the unit mass automatically by increasing

the number of samples as the counting process.

ACAI: Automatic Counting Accuracy Improvement

Proceed to step 8 after storing a unit mass at last page.

8 If a few more samples are added, the processing

indicator turns on. To prevent an error, add three or

more. The processing indicator does not turn on if

overloaded. Try to add the same number of samples

as displayed.

9 The balance re-calculates the unit mass while the

processing indicator is blinking. Do not touch the

balance or samples on the pan until the processing

indicator turns off.

10 Counting accuracy is improved when the processing

indicator turns off.

Each time the above operation is performed, a more

accurate unit mass will be obtained. There is no

definite upper limit to the ACAI range for the number

of samples exceeding 100. Try to add the same

number of samples as displayed.

11 Remove all the samples used in ACAI and proceed

with the counting operation using the improved unit

mass.

dd a few more

samples.

The mark turns on

at proper range.

The mark turns on

and off during

calculation.

The mark turns off after the unit mass

is improved.

From at last page

step

Repea

BM series 23

Page 26

6.4. Percent Mode (%)

The percent mode displays the weight value in percentage compared to a 100% reference mass

and is used for target weighing or checking the sample variance.

Selecting the percent mode

1 Press the MODE key to select the unit % (Percent mode).

If the percent mode can not be selected, refer to "5. Weighing Units".

Storing the 100% reference mass

2 Press the RANGE key to enter the 100% reference mass

storing mode.

Weighing pan

3 Place a tare (container) on the weighing pan, if necessary.

Press the RE-ZERO key to cancel the weight (tare).

The balance displays 100 0 % .

4 Place the sample to be set as the 100% reference mass on

the pan or in the container.

5 Press the PRINT key to store the reference mass.

The balance displays 100.00 % .

Note

The decimal point position can be changed by the 100% mass.

BM-252, BM-500 BM-300, BM-200

100% mass

0.0100 g to 0.0999 g 1 % 0.00100 g to 0.0099 g 1 %

0.1000 g to 0.9999 g 0.1 % 0.01000 g to 0.0999 g 0.1 %

1.0000 g to 0.01 % 0.10000 g to 0.01 %

If the balance judges that the mass of the sample is too light

(

under 0.01g

) to be used as a reference, it displays lo .

Minimum

display

BM-20, BM-22

100% mass

Minimum

display

Tare

(Container)

100% mass

A 100% reference mass can be stored in the non-volatile

memory and is maintained even if the AC adapter is removed.

6 Remove the sample.

Reading the percentage

7 Place a sample to be compared to the reference mass on

the pan. The displayed percentage is based on the 100%

reference mass.

24 BM series

Place sample

Percentage

Page 27

6.5. Built-in DC Static Eliminator (Neutralization Device)

The BM series is equipped with four DC static eliminator electrode units to neutralize static

electricity from a charged weighing sample. When neutralizing static electricity before weighing, stability can be improved, reducing error.

Neutralizing ion : The discharge electrodes of the built-in DC static eliminator continuously

generate bipolar ions by corona discharge. Applying these ions to the weighing sample neutralizes the static charge.

Static electricity : In general, when the ambient humidity is less than 45%RH, powders, paper,

plastic, nonconductors, etc., easily become charged with static electricity. The influence of the static electricity may cause a weighing error of several milligrams. The static eliminator effectively neutralizes the electrical charge.

Operation

1 Place the sample to be weighed on the center

(of the metallic circle) of the separation plate to neutralize the static charge.

2 Press the ION key to start the neutralization.

The mark and the LED flash. The neutralization will stop after the preset time of "Neutralizing time (ion)" in the function table (the factory setting is 3 seconds).

LED

Static eliminator

Sample

Separation plate

The minimum display of BM-20, BM-22 and BM-252 is

switched to 0.1 mg while performing the neutralization.

When pressing the ION key during the neutralization,

the neutralization stops.

Note

Keep a space between electrodes and the weighing sample.

Placing the sample to close to an electrode may cause the sample to become charged.

Remove any obstacle between electrodes and the weighing sample.

In the neutralization

Weighing displa

Maintenance Of The Electrode Unit

In general, when using the eliminator for a long time, dust and

stains may stick to the electrodes. Clean them periodically to maintain performance.

When pins of the electrode are rubbed down and the

neutralization function does not recover after cleaning them, replace the electrodes with four new units. The standard life time is approximately 10000 hours.

Replacing Electrode Unit

1 Turn the electrode unit 45 degrees counterclockwise. Remove it.

Example: Display of BM-20,

BM-22, BM-252

Step

Cleaning

Electrode

2 Replace all four units with new ones at the same time.

Note

Do not remove and clean the electrodes while the mark and the LED are flashing.

BM series 25

Electrode uni

Page 28

Remote Control Of The DC Static Eliminator

AX-T

When specifying "on" to [AD8922 control] in the function

settings (8922 ionfnc on), the balance applies the function of the ION key to the MODE key on the AD-8922.

When specifying "2" to [External control input ] in the function

settings (e-5 ionfnc 2) and assembling external key plug

(AX-T-314A-S) and foot switch (AX-SW128), the balance

applies the function of the ION key to the foot switch

Applies the ION key to the MODE key on the AD-8922A.

Example:

External key plug

(AX-T-314A-S)

Ter mi na l 1

Line 1 GND

Applies the ION key to terminal 1of the foot switch (AX-SW-123).

Description Of The External Key Plug (AX-T-314A-S) (Option)

External key plug

When specifying [External control input (e-5)] in [Static eliminator (ionfnc)], the following

functions can be applied to the external key plug (AX-T-314A-S) terminals.

Static eliminator External control input Terminal 1 Terminal 2

-314A-S

Ter mi na l 2 Ter mi na l 1

Terminal GND

Line 1 Line 2 GND

ionfnc e-5 0 PRINT key RE-ZERO key ionfnc e-5 1 PRINT key ION key ionfnc e-5 2 ION key RE-ZERO key

factory settings

26 BM series

Page 29

6.6. Monitoring Clock and Environmental Sensors

ature

In the weighing mode, the built-in clock and environmental sensors (temperature, humidity, air pressure) can be monitored and temperature data can be output with the function settings.

Specifications Of The Environmental Sensors

Sensor Resolution Measurement range Applicable range Temperature ±1.5 °C 5 °C to 40 °C

Humidity ±10 % 0 % to 100 %

Air pressure ±10 hPa 300 hPa to 1100 hPa

5 °C to 40 °C

Caution

The environmental sensors are built into the case. Therefore, these values are not in accordance

with the environmental condition.

Refer to "17. Specifications" for operating condition of the product.

Operation

Press the SELECT key in the weighing

mode. The current time, date and sensor values (temperature, humidity, air pressure) are displayed for several seconds in order. The balance returns to the weighing mode automatically.

If pressing the SELECT key while

displaying current data, the display proceeds to next data.

If pressing the CAL key while

displaying current data, the balance returns to weighing mode.

Environmental sensor

Weighing mod

Tim

5 second

Dat

5 second

10 second

Weighing mod

Humidit

ir pressure

Temper

Note

If adjusting the built-in clock, refer to "10.7.Clock And Calendar Function". If appending time and date to data output, refer to the [Time/Date output (5-td)] of

"10.2.Details Of The Function Table".

If appending temperature data to the data output, refer to [Temperature output (5-tp)] of

"10.2.Details Of The Function Table".

BM series 27

Page 30

6.7. Repeatability Test

The repeatability means the weighing error when measuring the same mass repeatedly.

The standard deviation is generally used for the indicator of the repeatability. The repeatability test measures the built -in mass 10 times and displays the standard deviation. Use the repeatability test to inspect the performance of the balance when changing environment

or when moving the balance to a new location.

Example: "The standard deviation = 0.2 mg" means that the probability of weighing error within

±0.2 mg is approx. 68% when measuring the same mass repeatedly.

Note

The repeatability test uses the internal mass. Therefore, the standard deviation discords to item

repeatability of "17.Specifications". Regard the standard deviation as a reference.

Products Internal mass

BM-20, BM-22 Approx. 20 g

BM-252, BM-500, BM-300, BM-200 Approx. 190 g

1 Press and hold the RANGE key,

Release the key when displaying rep te5t .

2 When displaying rep te5t , the measurement

is automatically started, "r"e"p blinks and the

measurement count (0 to 10) is displayed.

When stopping the current measurement,

press the CAL key.

Example of BM-20 Weighing mode

Press and hold

Release

ounte

Note

Avoid vibration and breezes for precise

measurement during this test.

In measuremen

Sto

3 At the end of the measurement,

the standard deviation of the

repeatability is displayed.

4 Press the CAL key or PRINT key

to return to weighing mode.

Resul

The standard deviation

Weighing mode

28 BM series

Page 31

7. Response Adjustment

This function stabilizes the weight value by reducing the influence on weighing that is caused

by drafts and/or vibration at the place where the balance is installed. The adjustment of the

function can be performed by analyzing the environment automatically or hand-operation.

The state of the function has three stages as follows :

Indicator Parameter Response Stability

FAST Cond 0 MID. Cond 1 SLOW Cond 2

Fast response, Sensitive value

Slow response, Stable value

7.1. Automatic Response Adjustment

This function automatically updates the response adjustment by analyzing the influence of

the environment using the internal mass.

1 Press and hold the MODE key until RESPONSE is

displayed, then release the key.

2 The balance automatically sets the response characteristic.

Caution Do not allow vibration or drafts to affect the

balance during adjustment.

Response indicator

Press and hold

Release

3 After automatic adjustment, the balance displays end ,

returns to the weighing mode and displays the updated

response indicator for about thirty seconds.

Note

If the automatic response adjustment fails, the balance

displays CH ng . Check the ambient conditions such as

breeze and vibration, also check the weighing pan. Then,

perform the adjustment again. Press the CAL key to

return to the weighing mode.

If there is anything on the weighing pan, the balance

displays CH 0 . Remove the substance from the pan.

Press the CAL key to return to the weighing mode.

Advise

If the automatic response adjustment is not helpful, try "7.2.

Manual Response Adjustment".

Result

BM series 29

Page 32

7.2. Manual Response Adjustment

1 Press and hold the MODE key until RESPONSE is

displayed, then release the key.

Press the MODE key again quickly.

2 Select a setting for the response adjustment using the

MODE key. Either FAST , MID. or SLOW can be

selected.

3 The balance displays 1end1, returns to the weighing

mode and displays the updated response indicator for

about thirty seconds.

Advise

If the automatic response adjustment is not helpful,

specify a parameter for "Condition (Cond) " of

"Environment, Display (ba5fnc)" with key operation.

Press and hold

Release and press again immediately

Select a paramete

Release and wai

Result

30 BM series

Page 33

8. Calibration (To Adjust The Weighing Value)

8.1. Calibration Group

Calibration

Automatic self calibration (Calibration due to changes in temperature) Calibration using the internal mass (One-touch calibration) Calibration using an external weight that you have

Calibration test

Calibration test using the internal mass Calibration test using target mass that you have

Correction of the internal mass value

Caution

Do not allow vibration or drafts to affect the balance during calibration. Calibration test does not perform calibration. When using the data output for GLP using the RS-232C interface, set "GLP output (info)" of the

function table. Refer to "10. Function Table". Time and date can be added to the GLP report. If it

is incorrect, refer to "10.7 Clock and Calendar Function" and adjust them.

Calibration test is available only when "GLP output (info)" is set . The calibration and calibration test data can be stored in memory. When using memory, set "Data

memory (data)" of the function table. Refer to "12. Data Memory" for details.

Caution on using an external weight

The accuracy of an external weight can influence the accuracy of weighing. Select a mass for calibration and calibration test from the following table.

Model Usable calibration mass Adjustable range

BM-20 1 g 2 g 5 g 10 g 20 g* BM-22 1 g 2 g 5 g 10 g 20 g* BM-252 10 g 20 g 50 g 100 g 200 g* -15.00 mg to +15.99 mg BM-200 50 g 100 g 200 g* BM-300 50 g 100 g 200 g* 300 g BM-500 50 g 100 g 200 g* 300 g 500 g

Bold type*: Factory setting. The calibration mass value can be adjusted within the range above.

-3.000 mg to +3.099 mg

-30.0 mg to +30.9 mg

About the internal mass

The internal mass may change due to corrosion or other damage caused by the operating

environment, or due to aging. Check the internal mass periodically and correct the internal mass

value if necessary. Refer to "8.7. Correcting the Internal Mass Value".

Display

This indicator means "In process of measuring calibration data".

Do not allow vibration or drafts to affect the balance while the indicator is displayed.

BM series 31

Page 34

8.2. Automatic Self Calibration (For variation of ambient temperature)

Automatic self calibration due to changes in temperature

This function automatically calibrates the balance when the balance detects an ambient

temperature change. If GLP output is selected in the function table, the balance outputs the

calibration report or stores the data in memory. Automatic self calibration functions even if the

display is turned off (standby state). Refer to "9.1. Permit Or Inhibit" for the operation.

Caution

Place nothing on the weighing pan during automatic self calibration. If something is on the weighing pan, the balance decides that it is in use and does not

perform automatic self calibration.

When weighing a light sample, using a long term weighing or installing the balance in a

system, turn off automatic self calibration.

Note When turning on the balance with nothing on the pan, if a sample heavier than 0.5 g is

placed on the pan, the balance detects the state that a sample is placed on the pan and does not perform the automatic self calibration.

The mark is " prior notice indicator of automatic self calibration".

When the balance detects a change in ambient temperature, this indicator blinks and automatic self calibration is required. If the balance is not used for several minutes with this indicator blinking, the balance performs automatic self calibration. The environment will affect the time that the indicator blinks.

The balance is measuring calibration data. Do not allow vibration or drafts to affect

the balance while this indicator is displayed. After calibration, the balance returns

to indicate the previous display. Advise The balance can be used while the indicator blinks. But, it is recommended that to maintain the

accuracy, stop using the balance and confirm that there is nothing on the pan and allow the balance to perform self calibration.

8.3. One-Touch Calibration (For Common Use)

This function calibrates the balance using the internal mass. The only operation required is to press the CAL key.

1 Connect the AC adapter and warm up the balance for at

least one hour with nothing on the weighing pan.

2 Press the CAL key to display Cal in .

3 The balance performs calibration using the internal mass.

Do not allow vibration or drafts to affect the balance.

4 If GLP output is set, glp is displayed, the calibration test report

is output to the RS-232C interface and is stored in memory. Refer to "GLP output (info)" and "Data memory (data)" of the function table, "11.2. GLP Report" and "12. Data Memory".

end is displayed after the calibration.

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

6 Confirm weighing accuracy using calibration test (CC in).

32 BM series

GLP outpu

Page 35

8.4. Calibration Test Using the Internal Mass

This function tests the balance accuracy using the internal mass. Calibration test does not perform calibration. When GLP output is set, the calibration test report is output or stored.

1 Connect the AC adapter and warm up the balance at least

one hour.

2 Press and hold the CAL key until CC in is displayed,

then release the key.

3 The balance measures the zero point. Prevent vibration and drafts to affect the balance.

4 The measured zero point data is displayed.

5 The balance measures the internal mass. Prevent vibration and drafts to affect the balance.

6 The value of the internal mass is displayed.

The normal range of the value is as follows:

Press and hold

Release

Model The internal mass The normal range

BM-20, BM-22 20.00000 g ±0.02 mg BM-252, BM-200

BM-300, BM-500

7 If GLP output is set, glp is displayed, the calibration test

report is output to the RS-232C interface and is stored in memory. Refer to "GLP output (info)" and "Data memory (data)" of the function table, "11.2. GLP Report" and "12. Data Memory".

end is displayed after the calibration.

9 The balance automatically returns to the weighing mode.

200.0000 g ±0.2 mg

GLP outpu

BM series 33

Page 36

8.5. Calibration Using An External Weight

This function calibrates the balance using an external weight.

1 Connect the AC adapter and warm up the balance for at

least one hour with nothing on the weighing pan.

2 Press and hold the CAL key until Calout is

displayed, then release the key.

3 When displaying Cal 0 , proceed as follows: If you want to change the calibration mass, press

the RANGE key and proceed to step 4.

If you use the calibration mass value stored in

the balance, proceed to step 5.

4 Specify the calibration mass value as follows:

RANGE key RE-ZERO (+)key MODE (-)ke PRINT key

CAL key

5 Confirm that there is nothing on the pan and press the

PRINT key. The balance measures the zero point.

Do not allow vibration or drafts to affect the balance.

The balance displays the calibration mass value.

..........

.....

............

...............

The key to switch blinking figures. The keys to select the calibration mass or adjust the mass value. Refer to page 31. The key to store the new mass value. Even if the AC adapter is removed, the data is maintained in non-volatile memory. The key to cancel the operation and return to Cal 0 .

Press and hold

New mass

value

Select a type

Specify detail of value

Example:

New value

100.0012 g

Releas

6 Place the displayed calibration weight on the pan and press

the PRINT key. The balance measures the calibration mass. Do not allow vibration or drafts to affect the balance.

end is displayed.

Remove the weight from the pan.

8 If GLP output is set, glp is displayed and the calibration

report is output and stored. Refer to "GLP output (info)" and "Data memory (data)" of the function table, "11.2. GLP Report" and "12. Data Memory".

9 The balance will automatically return to the weighing mode.

10 Place the calibration weight on the pan and confirm that the

value displayed is correct. If it is not within the range, check the ambient conditions such as breeze and vibration also check the weighing pan. Then, repeat steps 1 to 10.

Place the weight

Remove the weight

GLP output

34 BM series

Page 37

8.6. Calibration Test Using An External Weight

This function tests the weighing accuracy using an external weight. Calibration test report can be output or stored with "GLP output (info)" Calibration test does not perform calibration.

1 Connect the AC adapter and warm up the balance for at least

one hour with nothing on the weighing pan.

2 Press and hold the CAL key until CC out is displayed,

then release the key.

3 When displaying CC 0 , proceed as follows: If the target mass is changed, press the RANGE key and

proceed to step 4. A list of usable weights is on page 31.

If current target mass value is used, proceed to step 5.

4 Specify the target mass value as follows:

RANGE key RE-ZERO (+)key MODE (-)ke PRINT key

........

...

..........

The key to switch blinking figures. The keys to select the target mass or adjust the mass value. Refer to page 31. The key to store the new mass value. Even if the AC adapter is removed, the data is maintained in non-volatile memory.

CAL key

.............

The key to cancel the operation and return to CC 0 .

5 Confirm that there is nothing on the pan and press the

PRINT key. The balance measures the zero point and

displays the measured value. Do not allow vibration or drafts to affect the balance. The balance displays the target mass value.

6 Place the displayed target mass on the pan and press the

PRINT key. The balance measures the target mass and

displays the measured value. Do not allow vibration or drafts to affect the balance.

7 end is displayed.

Remove the weight from the pan.

8 If GLP output is set, glp is displayed and the calibration

report is output and stored. Refer to "GLP output (info)" and "Data memory (data)" of the function table, "11.2. GLP Report" and "12. Data Memory".

9 The balance will automatically return to the weighing mode.

Select a type

Specify detail of value

Example:

New value

100.0012 g

Place target mass

Remove target mass

Press and hold

New mass

value

GLP output

Releas

BM series 35

Page 38

200.0006

8.7. Correcting The Internal Mass Value

The balance can correct the internal mass

value within the range shown below. This function corrects the internal mass value to conform to an external weight. The corrected mass value is maintained in non-volatile

200g

200.0000 g

The same mass

Correct the internal mass

by +0.6mg at 200g.

Calibrate with this

internal mass.

200g

memory even if the AC adapter is removed. The internal mass value is corrected as follows:

Corrected external weigh

Model The internal mass The normal range

BM-20, BM-22 20.00000 g ±0.15 mg BM-252, BM-200, BM-300, BM-500 200.0000 g ±1.5 mg

Example: 200.0000 g is corrected to +0.6 mg (200.0006 g). When using a 100 g external weight by

+0.6 mg for the correction, and the weight changed to 200 g, the correction value is +1.2 mg.

1 Perform one-touch calibration. Weigh an external weight and get the correction value.

2 Press the ON:OFF key to turn off the display.

Standb

3 While pressing and holding the PRINT key and the RANGE key,

press the ON:OFF key. p5 is displayed.

Press and hold Press

4 Press the PRINT key to display the function switches.

Set the function table switch and internal mass correction switch to "1" as shown above using the following keys.

RANGE key RE-ZERO key PRINT key CAL key

.......

....

.........

............

The key to select blinking figure. The key to change the value of the blinking figure. The key to store it and return to weighing mode. The key to cancel current operation.

he internal mass correction switch

he function table switch

5 Press and hold the RANGE key to enter the function

table and release the key when ba5fnc is displayed.

6 Press the RANGE key several times until C5 in is

displayed, then release the key.

7 Press the PRINT key.

Correct the internal mass value using the following keys.

RE-ZERO (+)key MODE (-)key PRINT key

....

........

...........

The key to increase the value. The key to decrease the value. The key to store the new value and display the next menu item of the function table.

CAL key

.............

The key to cancel this correction and display the next menu item of the function table.

Function switch

Weighing mode

Press and hold

Function table

Internal mass correction

Corrected valu

8 Press the CAL key to return the weighing mode.

9 Press the CAL key to calibrate the balance using the internal mass.

10 Check that the correction has been performed properly with the

Weighing mod

external weight. If the value is incorrect, repeat the correction.

Perform one-touch calibration

36 BM series

Page 39

9. Function Switch And Initialization

9.1. Permit Or Inhibit

The balance stores parameters that must not be changed unintentionally.

Example: Calibration data for accurate weighing, Data for adapting to the operating environment,

Control data for the RS-232C interface.

The balance is equipped with five switches for the purpose of protecting parameters. Each switch

can select either "permit" or "inhibit". "Inhibit" protects parameters against unintentional operations.

1 Press the ON:OFF key to turn off the display.

2 While pressing and holding the PRINT key and the RANGE key,

press the ON:OFF key to display p5 .

3 Press the PRINT key. Then the balance displays the function switches.

4 Specify the switches using the following keys.

RANGE key RE-ZERO key

0 To inhibit changes. (Can not be used.) 1 To permit changes. (Can be used.)

PRINT key CAL key

...........

............

................

The key to select blinking digit.

........

The key to change the parameter for the selected switch.

The key to store the new parameter and return to the weighing mode. The key to cancel current operation and return to the weighing mode.

Function table

0 To inhibit changes to the function table. 1 To permit changes to the function table.

Calibration using the internal mass (One-touch calibration)

0 To inhibit calibration using the internal mass. 1 To permit calibration using the internal mass.

Calibration using the external weight

0 To inhibit calibration using the external weight. 1 To permit calibration using the external weight.

Automatic self calibration (for variation of ambient temperature) 0 To inhibit automatic self calibration. 1 To permit automatic self calibration.

Internal mass correction

0 To inhibit correction. 1 To permit correction.

BM series 37

Page 40

9.2. Initializing The Balance

This function returns the following parameters to factory settings.

Calibration data Function table The sample unit mass value (counting mode),

100% reference mass value (percent mode) The data that is stored in the balance using the data memory function External calibration weight and target mass value Function switch settings ("9.1. Permit Or Inhibit") Liquid density and temperature in the density mode

Note Be sure to calibrate the balance after initialization.

1 Press the ON:OFF key to turn off the display.

2 While pressing and holding the PRINT key and the

RANGE key, press the ON:OFF key to display p5 .

3 Press the RANGE key to display Clr .

4 Press the PRINT key.

To cancel this operation, press the CAL key.

5 Press the RE-ZERO key to display Clr go .

6 Press the PRINT key to initialize the balance.

The balance will automatically return to the weighing mode.

Press and hold Press

38 BM series

Page 41

10. 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

is the "Item".

10.1. Setting The Function Table

Display symbol and keys

The symbol "

When pressing and holding the key in the weighing mode, the balance enters the function table mode. The key to select the class or item in the function table mode.

The key to change the parameter.

When displaying a class, the key enters an item in the class. When displaying an item, the key stores the new parameter and displays the next class.

When displaying an item, the key cancels the new parameter and displays the next class. When displaying a class, the key exits the function table mode and returns to the weighing mode.

" shows effective parameter.

Setting Procedure

1 Press and hold the RANGE key until ba5fnc of the function table is displayed in the weighing

mode, then release the key

2 Press the RANGE key to select a class.

3 Press the PRINT key to enter the class

4 Press the RANGE key to select a item.

5 Press the RE-ZERO key to select a parameter for the selected item.

6 If storing parameters of the selected class, press the PRINT key.

Then the next class is displayed. If canceling the current operation, press the CAL key. Then the next class is displayed.

7 When specifying parameters for another class, proceed to step 2.

When finishing the setting, press the CAL key to return to weighing mode.

BM series 39

Page 42

Setting Example

This example sets "Stores weighing data" for "Data memory" and "1 minute" for "Interval time".

Class

Weighing mode

Start

Step 1 Press and hold

Step 2 Press several times

Step 3

Item "Data memory"

Item

Step 7

Finish

Weighing mode

Step 4 Press several times

Step 4

"Interval time"

Press 2 time

Step

Press 5 time

Item

Step

Parameter "Stores weighing data"

Parameter "1 minute"

Step 6

40 BM series

Page 43

10.2. Details Of The Function Table

Class Item and Parameter Description

Fast response, sensitive value FAST

MID.

Slow response, stable value SLOW

Stable range is ±1 digit

±2 digit

Stable range is ±3 digits

off

OFF

Normal

Strong

Very strong

5 times/second

10 times/second

Point (.)

Comma (,)

off

OFF

off

OFF

Key mode

Auto print mode A

0 1 2 0

1 2

0 1 2

Reference = zero

Auto print mode B

Reference = last stable value

Stream mode /

Interval mode

Plus only Displayed value > Reference Minus only Displayed value < Reference Both Regardless of displayed value 10 digits 100 digits 1000 digits Not used Stores weighing data Stores calibration data

The stabilization indicator illuminates when the display

fluctuation is within the range.

Display hold function to measure the volume dispensed from the pipette.

Keeps zero display by tracking zero drift.

Period to refresh the display

Decimal point format

Turns on the weighing mode display when the AC adapter is connected.

The time and date are added to the output data.

Accepts the PRINT key only when the display is stable.

Outputs data when the display is stable and conditions of ap-p, ap-b and the reference value are met.

With data 0, outputs data continuously; with data 2, uses interval memory.

Difference between reference value and displayed value

Related items:

prt, int, d-no, 5-td, info

ba5fnc

Environment Display

Cl adj

Clock

dout

Data output

Cond

Condition

5t-b

Stability band width

ploc

Display lock function

trc

Zero tracking

5pd

Display refresh rate

pnt

Decimal point

p-on

Auto display-ON

beep

Beep

Refer to "10.7. Clock and Calendar Function"

prt

Data output mode

ap-p

Auto print polarity

ap-b

Auto print

difference

data

Data memory

Can be changed by response adjustment.

The unit of minimum display is digit.

Example: If 1 mg display is selected using the RANGE key for the BM-300, 1 mg is one digit.

Usable minimum display of the balance is one digit.

Example: In gram display, one digit is 0.01 mg for the BM-252 and 0.1 mg for the BM-300.

BM series 41

Factory settings.

Page 44

Class Item and Parameter Description

Every measurement

2 seconds

5 seconds

dout

Data output

5if

Serial interface

int

Interval time

d-no

Data number output

5-td

Time/Date output

5-id

ID number output

pU5e

Data output pause

at-f

Auto feed

info

GLP output

ar-d

Zero after output

5-tp

Temperature output

bp5

Baud rate

btpr

Data bit, parity bit

Crlf

Terminator

type

Data format

10 seconds

30 seconds

1 minutes

2 minutes

5 minutes

10 minutes

off

No output

Output

No output

Time only

Date only

Time and date

off

No output

Output

off

No pause

Pause (1.6 seconds)

off

Not used

Used

No output

AD-8121 format

General data format

off

Not used

Used

off

Not output

Output

0 1

2 3 4 5

0 1 2

0 1

0 1 2 3 4 5

600 bps 1200 bps 2400 bps 4800 bps 9600 bps

19200 bps 7 bits, even 7 bits, odd 8 bits, none CR LF CR A&D standard format DP format KF format MT format NU format CSV format

Interval time in the interval memory mode when using prt 3,, data 1

Refer to "12. Data Memory"

Selects whether or not the time or date is added to the weighting data. Refer to "10.7. Clock and Calendar Function" for details.

Selects whether or not the ID number is output.

Selects the data output interval.

Selects whether or not automatic feed is performed.

Selects GLP output method. Refer to "11. ID Number And GLP Report " for details.

Adjusts zero automatically after data is output

Adds temperature to data output

CR: ASCII code 0Dh LF: ASCII code 0Ah

Refer to "10.5. Description of Item "Data Format" ".

: Caution The balance may not transmit the data completely at the specified refresh rate, depending

on the baud rate or data added to the weighing data such as time, date and ID number.

42 BM series

Factory settings.

Page 45

Class Item and Parameter Description

5if

Serial interface

d5 fnc

Density function

Unit

C5 in

Internal mass correction

ID number setting

ionfnc

Static eliminator

door

Door state function

t-Up

Timeout

erCd

AK, Error code

ldin

Liquid density input

ion

Neutralization time

8922

AD8922 control

e-5

External control input

d-dt

Door sensor

off No limit

on 1 second off No output

on Output

0 Water temperature

1 Liquid density

Refer to "5. Weighing Units".

Displayed only when the internal mass value correction switch is set to 1. Refer to "8. Calibration (To Adjust The Weighing Value)".

Refer to "11. ID Number And GLP Report".

0 3 seconds 1 10 seconds 2 Manual operation (max. 10 min.)

off The ION key is not used. on Applies the ION key to the MODE key on AD-8922.

0 Applies the PRINT key and RE-ZERO key. 1 Applies the PRINT key and ION key. 2 Applies the ION key and RE-ZERO key.

off No used

on Used

Selects the wait time to receive a command.

AK: ASCII code 06h

Available only when density mode is selected

Refer to "6.5. Built-in DC Static Eliminator" ".

Factory settings.

10.3. 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 is required. After setting, the balance displays FAST .

Cond 2 This parameter is for stable weighing with slow response. Used to prevent a mass

value from drifting due to vibration or drafts. After setting, the balance displays SLOW .

Notes 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 or stores the data. The parameter influences the "Auto print mode".

5t-b 0 This parameter is used for sensitive response of the stabilization indicator. Used for

exact weighing.

5t-b 2 This parameter ignores slight fluctuations of a mass value. Used to prevent a mass

value from drifting due to vibration or drafts.

BM series 43

Page 46

Display Hold Function ( ploc )

This function is used to measure the volume dispensed from the pipette.

When specifying "Display lock function is used" (ploc on) in the function table, dispensing liquid

into the weighing bottle from the pipette and getting a stable weighing value, the balance calculates an average value and displays the result (a fixed value).

When using this function for the measurement of a small volume, the influence of water

evaporation can be reduced.

Caution Even if using the weighing bottle (evaporator trap) to reduce the water

evaporation, at least 0.05 mg (0.05 ) evaporation will occur .

When canceling this function, press the CAL key.

In calculation. It blinks.

Calculating Fixed result

Processing indicato

Stable mar

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.

Auto display-ON ( p-on )

When the AC adapter is plugged in, the display is automatically turned on without the ON:OFF key

operation, to display the weighing mode. Used when the balance is built into an automated system. One hour warm up is necessary for accurate weighing.

44 BM series

Page 47

10.4. Description Of The Item "Data Output Mode"

The parameter setting of "Data output mode (prt)" applies to the performance when the "Data

memory (data)" parameter is set to "2" (to store the weighing data) and when the data is transmitted using the RS-232C interface.

Key mode

When the PRINT key is pressed with the stabilization indictor turned on, the balance outputs or

stores the weighing data and the display blinks one time.

Required setting dout prt 0 Key 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 or stores the weighing data.

When the PRINT key is pressed with the stabilization indictor turned on, the balance outputs or

stores the data and the display blinks one time.

Auto print mode A

Example For weighing each time a sample is placed and removed, with "ar-d" set

to "1" (to adjust zero after the data is output). Required setting dout prt 1 Auto print mode A (reference = zero) dout ap-p Auto print polarity dout ap-b Auto print difference dout ar-d 1 Zero after output

Auto print mode B

Example For weighing while a sample is added. Required setting 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 the

display refresh rate is set to 5 times / second (5pd 0), the data output rate is also set to the same 5 times / second. The display does not blink in this mode. The interval memory mode is used

when the "Data memory ( Example For monitoring data on a computer. Required setting dout data 0 Data memory function is not used ba5fnc 5pd Display refresh rate 5if bp5 Baud rate

Caution The balance may not transmit the data completely at the specified refresh rate,

depending on the baud rate or time, date and ID number appended to the weighing data.

data)" parameter is set to "1" (to store the weighing data).

dout prt 3 Stream mode

Interval mode

The weighing data is periodically stored in memory. Example For periodical weighing without a personal computer command and to

output all of the data, to a computer, at one time.

Required setting dout prt 3 Interval mode dout data 2 Data memory function is used dout int Interval time

BM series 45

Page 48

10.5. Description Of The Item "Data Format"

A&D standard format 5if type 0

This format is used when the peripheral equipment can receive the A&D format.

If an AD-8121B is used, set the printer to MODE 1 or 2.

This format consists of fifteen or sixteen characters excluding the terminator.

When numerical characters without a decimal point exceed eight characters for the BM-20, BM-22

and BM-252, 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.

Header Data Unit Terminator

Stable header Stable header of counting mode Unstable header Overload header

Header Data Unit Terminator

DP (Dump print) format 5if type 1

This format is used when the peripheral equipment can not receive the A&D format.

If an AD-8121B is used, set the printer to MODE 3.

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 not zero or overloaded.

The unit, consisting of three characters, follows the data.

Header Data Unit Terminator

Stable header Stable header of counting mode 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 not

zero or overloaded.

This format outputs the unit only for a stable value.

Data Unit Terminator

Stable value Unstable value

46 BM series

Page 49

MT format 5if type 3

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

Header Data 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, data number, time and date are added at "Data output (dout)" of the

function table, outputs ID number, data number, date, time and weighing data in this order and

separates each item by a comma and treats all the items as one group of data.

ID number Data number Date Time Weighing data

ID number dout 5-id 1

The number to identify a specific balance.

This format consists of eight characters excluding the terminator.

Data number dout d-no 1

This format outputs the data number just before the data is transmitted using the RS-232C

interface.

This format consists of six characters excluding the terminator. When CSV format (5if type 5) is selected, the period ( . ) is replaced with a comma ( , ).

Data number Terminator

BM series 47

Page 50

Date dout 5-td 2 or 3

The date output order can be changed in " Time/Date output (5-td)" and "Clock (Cl adj)".

The year is output in a four-digit format.

Time dout 5-td 1 or 3

This format outputs time in 24-hour format.

Temperature dout 5-tp 1

This format outputs temperature. The unit is "C".

Caution Humidity and air pressure are not output.

48 BM series

Page 51

10.6. Data Format Examples

Stable

Unstable

Overload

Positive error

Overload

Negative error

Space, ASCII 20h Carriage Return, ASCII 0Dh Line Feed, ASCII 0Ah

BM series 49

Page 52

Units

A&D D.P. KF MT

Counting mode

Percent mode

Ounce (Avoir)

Troy Ounce

Metric Carat

Momme

Pennyweight

Grain

Tael (HK general, Singapore)

Tael (HK, jewelry)

Tael (Taiwan)

Tael (China)

Tola (India)

Messghal

Density

Space, ASCII 20h

50 BM series

Page 53

10.7. Clock And Calendar Function

The balance is equipped with a clock and calendar function. When the

"GLP output (info)" and "Time/Date output (5-td)" is used, the time and

date can be added to the output data. The operation is as follows:

Press and hold

Operation

1 Press and hold the RANGE key until ba5fnc of the function

table is displayed in the weighing mode, then release the key. 2 Press the RANGE key several times to display Cl adj . 3 Press the PRINT key to enter the mode for the time and date.

Press several time

Checking the current time

4 The current time is displayed with all the digits blinking. When changing the time, press the RE-ZERO key and proceed to When the time is correct, press the RANGE key and proceed to When exiting the mode, press the CAL key and proceed to

step

Storing a new time

5 Set the time in 24-hour format using the following keys. RE-ZERO (+)key.To increase the value by one. MODE (-)key RANGE key PRINT key CAL key

.....

......

........

...........

To decrease the value by one. To select the digits to change the value. To store the new time, and proceed to To cancel operation and proceed to

step

Store new tim

Checking the current date

6 The current date is displayed with all the digits blinking. To change the display order of year (y), month (m) and day (d),

press the MODE key. The date is output in the order as specified. When the date is correct, press the CAL key and proceed to When changing the time again, press the RANGE key and

proceed back to When changing the date, press the RE-ZERO key and proceed to

step

Storing a new date

7 Set the date using the following keys. RE-ZERO (+)key To increase the value by one. MODE (-)key RANGE key PRINT key CAL key

.....

.......

..........

To decrease the value by one. To select the digits to change the value. To store the new setting, proceed to To cancel the new setting and proceed to

step

8. step

Store new dat

Quitting the operation

8 The balance displays the next menu item of the function table.

Press the CAL key to exit the mode and return to the weighing mode.

The current

time

New time

The current

date

New date

Note Do not enter invalid values such as a non-existing time and date in this function.

When the clock backup battery has been depleted, the balance displays rtc pf . Under this condition, press any key and set the time and date. The dead battery only affects the clock and calendar function. Even so, the function works normally as long as the AC adapter is connected to the balance.

BM series 51

Page 54

11. ID Number And GLP Report

The ID number is used to identify the balance when Good Laboratory Practice (GLP) is used.

The GLP output format is selected at "GLP output (info)" of the function table and can be output to a personal computer or printer using the RS-232C serial interface.

The GLP output format includes the balance manufacturer, model, serial number, ID number,

date, time and space for signature.

The balance can output the following reports for GLP using the RS-232C serial interface.

"Calibration report" of the "Automatic self calibration" and "One-touch calibration" using the

internal mass. "Calibration report" of the calibration using an external weight. "Calibration test report" of the calibration test using an external weight. "Title block" and "End block" for the weighing data.

Calibration and calibration test data can be stored in memory and several reports can be output at

the same time. Refer to "12. Data Memory" for details.

The ID number is maintained in non-volatile memory even if the AC adapter is removed. Refer to "10.7. Clock and Calendar Function" for checking and storing the time and date.

11.1. Setting The ID Number

1 Press and hold the RANGE key until ba5fnc of the function table is displayed, then release

the key.

2 Press the RANGE key several times to display id .

3 Press the PRINT key. Set the ID number using the following keys. RE-ZERO key

RANGE key PRINT key CAL key

4 When displaying

.....

........

..........

.............

The key to set the character of the digit selected. Refer to the display character set shown below. The key to select the digit to change the character. The key to store the new ID number and display ba5fnc . The key to cancel the new ID number and display ba5fnc .

ba5fnc , press the CAL key to return to the weighing mode.

52 BM series

Page 55

11.2. GLP Report

Set the following parameters to output the report.

Refer to "15.2. Connection to peripheral equipment" for connection to an AD-8121B. To print the report, set the "GLP output (info)" parameter to "1" and use MODE 3 of the AD-8121B. If

MODE1 is used, select temporary dump print mode by pressing the STAT. key of the AD-8121B.

To output the report to a personal computer using the RS-232C interface, set the "GLP output (info)"

parameter to "2".

If the time and date are not correct set the correct time and date in "Clock (Cl adj)" of the function table.

Calibration report using the internal mass

Key operation

1 Press the CAL key to display Cal in and calibrate the balance automatically. 2 If GLP output is used, glp is displayed and the calibration report is output. 3 The balance returns to weighing mode after this calibration.

Setting of "info 1" Setting of "info 2" AD-8121 printer format General format

===========A=&=D

MODEL=====BM-300 S/N=====01234567 ID======LAB-0123 DATE==2011/02/20 TIME====12:34:56 CALIBRATED(INT.) SIGNATURE

---------------

Space, ASCII 20h

<TERM>

Terminator, CR , LF or CR CR Carriage return, ASCII 0Dh LF Line feed, ASCII 0Ah

Manufacturer

Model

Serial number

ID number

Date Time

Calibration type

Signature

BM series 53

Page 56

Calibration test report using an internal mass

Note Calibration test does not perform calibration.

Key operation

1 Press and hold the CAL key to display CC in and release the key. 2 CC is displayed and the balance is tested automatically. 3 The zero point is measured and the weight value is displayed for a few seconds. 4 Internal mass is weighed and the weight value is displayed for a few seconds. 5 If GLP output is used, glp is displayed and the calibration test report is output. 6 The balance returns to weighing mode after this test.

Command

This calibration test report can be performed with command TST.

Setting of "info 1" Setting of "info 2" AD-8121 printer format General format

-----------A-&-D

MODEL-----BM-300 S/N-----01234567 ID------LAB-0123 DATE--2011/02/20 TIME----12:34:56 CAL.TEST(INT.) ACTUAL

-------0.0000--g

----+200.0002--g

TARGET

----+200.0000--g

SIGNATURE

---------------

Space, ASCII 20h

<TERM>

Terminator, CR , LF or CR CR Carriage return, ASCII 0Dh LF Line feed, ASCII 0Ah

Manufacturer

Model

Serial number

ID number

Date Time

Calibration test type

Zero point value

Target weight value

Target weight

Signature

54 BM series

Page 57

Calibration report using an external weight

Key operation

1 Press and hold the CAL key to display Cal out and release the key. 2 Cal 0 is displayed. 3 When updating the calibration mass value, press the RANGE key and proceed to step 4.

When using the preset calibration mass value, proceed to step 5. 4 Specify calibration mass value using the following keys. RANGE key

RE-ZERO (+)key MODE (-)key PRINT key

5 When pressing the RE-ZERO key, the zero point is measured and the weight value is displayed

for a few seconds. 6 Place the displayed mass on the pan. Press the PRINT key to measure the mass and the

weight value is displayed for a few seconds. 7 If GLP output is used, glp is displayed and the calibration report is output. 8 The balance returns to weighing mode after this calibration.

Setting of "info 1" Setting of "info 2" AD-8121 printer format General format

-----------A-&-D

MODEL-----BM-300 S/N-----01234567 ID------LAB-0123 DATE--2011/02/20 TIME----12:34:56 CALIBRATED(EXT.) CAL.WEIGHT

----+200.0000--g

SIGNATURE

---------------

Space, ASCII 20h

<TERM> CR Carriage return, ASCII 0Dh LF Line feed, ASCII 0Ah

........

The key to select the blinking figure

...

The key to increase the value of the blinking figure.

.......

The key to decrease the value of the blinking figure.

.........

The key to store the new value.

Manufacturer

Serial number

ID number

Calibration type

Calibration weight

Signature

Terminator, CR , LF or CR

Model

Date Time

BM series 55

Page 58

Calibration test report using an external weight

Note Calibration test does not perform calibration.

Key operation

1 Press and hold the CAL key to display CC out and release the key. 2 Cal 0 is displayed. 3 When updating the target value, press the RANGE key and proceed to step 4.

When using preset target value, proceed to step 5. 4 Specify calibration mass value using the following keys. RANGE key

RE-ZERO (+)key MODE (-)key PRINT key

5 When pressing the RE-ZERO key, the zero point is measured and the weight value is displayed for a few

seconds. 6 Place the displayed mass on the pan. Press the PRINT key to measure the mass and the weight value

is displayed for a few seconds. 7 If GLP output is used, glp is displayed and the calibration test report is output. 8 The balance returns to weighing mode after this test.

Setting of "info 1" Setting of "info 2" AD-8121 printer format General format

-----------A-&-D

MODEL-----BM-300 S/N-----01234567 ID------LAB-0123 DATE--2011/02/20 TIME----12:34:56 CAL.TEST(EXT.) ACTUAL

-------0.0000--g

----+200.0002--g

TARGET

----+200.0000--g

SIGNATURE

---------------

Space, ASCII 20h

<TERM> CR Carriage return, ASCII 0Dh LF Line feed, ASCII 0Ah

..........

The key to select the blinking figure

....

The key to increase the value of the blinking figure.

.........

The key to decrease the value of the blinking figure.

............

The key to store the new value.

Manufacturer

Serial number

ID number

Calibration test type

Zero point value

Target weight value

Target weight

Signature

Terminator, CR , LF or CR

Model

Date Time

56 BM series

Page 59

Title block and end block

When mass values are recorded as GLP data, a "Title block" is inserted at the beginning and an

"End block" is inserted at the end of a group of mass values in the GLP report.

Notes

To output the report to an AD-8121B , use MODE 3 of the AD-8121B. If MODE1 is used, select

temporary dump print mode by pressing the STAT. key of the AD-8121B.

If the data memory function is used (except data 0), the "Title block" and "End block" can not be

output.

Key operation

1 With the weighing data displayed, press and hold the PRINT key, then release the key.

5tart is displayed. The "Title block" is output.

2 The weighing data is output according to the parameter setting of the data output mode (prt) of

the function table.

3 Press and hold the PRINT key until recend is displayed, then release the key.

The "End block" is output.

Setting of "info 1" Setting of "info 2" AD-8121 printer format General format

-----------A-&-D

MODEL-----BM-300 S/N-----01234567 ID------LAB-0123 DATE--2011/02/20 START TIME----12:34:56

WT--+123.4567--g WT--+123.4612--g WT--+123.4623--g WT--+123.4634--g WT--+123.4511--g WT--+123.4534--g WT--+123.4712--g WT--+123.4645--g

END

15 SIGNATURE

---------------

TIME----12:40

Space, ASCII 20h

<TERM>

Terminator, CR , LF or CR CR Carriage return, ASCII 0Dh LF Line feed, ASCII 0Ah

Title block

Manufacturer

Model

Serial number

ID number

Date

Time

Weighing data

Time

Signature

End block

BM series 57

Page 60

12. Data Memory

Data memory is a function to store weighing data and calibration data in memory. The data stored in

memory are available for outputting at one time to a printer or personal computer.

Weighing data

Calibration report Internal calibration

External calibration Calibration test report Internal test calibration

External test calibration

12.1. Notes On Using Data Memory

Excluding date and time Up to 200 sets

Including date and time Up to 100 sets

Last 50 sets

To use the memory function, set the "Data memory (data)" parameter

and "Time/Date output (5-td)" parameter of the function table. Refer to "10. The Function Table" for details on setting the data memory.

For weighing data, the data contents to be stored and the storage

capacity depend on the "Time/Date output (5-td)" parameter setting.

If a different type of data exists in memory, "Clr" blinks in the upper left

of the display. For example: You want to store weighing data but calibration data or unit mass data remains in memory. "Clr" blinks.

If the stored data is incomplete or deleted, "err" blinks in the upper left

of the display. Under such a condition, before storing data, delete the data in memory as follows:

Upper leftof the display

Releasing "Clr" or "err"

1 Press and hold the PRINT key until SClr "n"o with "no" blinking is displayed, then release the key.

2 Press the RE-ZERO key to display Clr "g"o with "go" blinking. The type of data stored in memory appears in the upper left of the display as shown below:

Weighing data without time and date -d- Weighing data with time and date d-t Calibration report Hi5

3 Press the PRINT key to delete all the data in memory.

4 The balance displays end and returns to the weighing mode.

58 BM series

Page 61

12.2. Data Memory For Weighing Data

Features

The balance can store 200 sets of weighing data in memory (if time and date are added, the balance

can store 100 sets). Even if the AC adapter is removed, the data is maintained in the memory.

It is not necessary to connect a printer or personal computer to the balance continually, because

the balance stores the weighing data in memory. The data memory function does not occupy a printer or personal computer while weighing. The data in memory can be displayed on the balance for confirmation. The data in memory can be output at one time to a printer or personal computer.

Comment: Select items for addition to the output data, such as the ID number, data number, time

and date, in the function settings.

Storing the weighing data

Note If "Clr" blinks in the upper left of the display, delete the data in memory.

1 Set the "Data memory (data)" parameter to "1".

2 Specify the "Time/Date output (5-td)" parameter whether time and date is to added or not.

3 The storing mode depends on the "Data output mode (prt)" parameter setting.

Four modes are available to store data.

Key mode

Auto print mode A

Auto print mode B

Interval mode

...........................

..............

......................

When the PRINT key is pressed and the displayed value is stable, the balance stores the weighing data. When the displayed value is stable and the conditions of "Auto print polarity", "Auto print difference" and zero point (reference value) are met, the balance stores the weighing data. When the displayed value is stable and the conditions of "Auto print polarity", "Auto print difference" and last stable data (reference value) are met, the balance stores the weighing data. Weighing data is stored at an interval specified in "Interval time (int)". Press the PRINT key to start and stop this mode.

Display Symbols For Data Memory

The data amount

in memory

Memory full

Data number of the dat

currently displayed

Weighing data

being displayed

Memory data being displayed

Interval memory

standby indicator

Interval memory

active indicator

BM series 59

Page 62

Caution

When weighing data is being stored in memory, the data can be output to a personal computer

using the RS-232C interface at the same time. "fUl" indicates that memory is full or the memory capacity has been reached. More data can not

be stored unless the memory data is deleted. Automatic self calibration can not be used while the interval memory mode is active. The following commands can not be used during data storage.

Q Query command for weighing data. S Query command for stable weighing data. SI Query command for weighing data. SIR Query command for continuous weighing data.

Setting the function table

Parameter settings for each output mode are as follows:

Item

Mode

Key mode prt 0 Not used data 1

Auto print mode A prt 1 data 1

Auto print mode B prt 2

Interval mode prt 3 Not used data 1 int 0 to 8

Additional parameter settings, as follows:

Data number

ID number

No d-no off No 5-td 0 200 sets Yes d-no on Time only 5-td 1 No 5-id off Date only 5-td 2 Yes 5-id on

Data output

mode

Auto print polarity,

difference

ap-a 0 to 2 ap-b 0 to 2

Time and date

Data memory

function

Not used

data 1

Both 5-td 3

Interval time

100 sets

Enabling the data memory function

1 Press and hold the RANGE key until ba5fnc is displayed, then release the key.

2 Press the RANGE key several times to display dout .

3 Press the PRINT key.

4 Press the RANGE key three times to display data .

5 Press the RE-ZERO key to display data 1 .

6 Press the PRINT key to store the setting.

7 Press the CAL key to return to the weighing mode.

60 BM series

Page 63

Recalling the memory data

Confirm that the "Data memory (data)" parameter is set to "1".

1 Press and hold the PRINT key until reCall is displayed, then

release the key.

2 Press the PRINT key to enter the memory recall mode. The type of

data appears in the upper left of the display as shown to the right.

Recall the data in memory using the following keys.

RE-ZERO key MODE key PRINT key

With RANGE held down, press the CAL key

CAL key

3 Press the CAL key to return to the weighing mode.

.....

.........

..........

.............

To proceed to the next data set. To go back to the previous data set. To transmit the current data using the RS-232C interface.

To delete the current data. To exit the memory recall mode.

Transmitting all memory data at one time

Confirm that the "Serial interface (5if)" parameters are set properly.

Refer to "10. Function Table" and "15.2. Connection To Peripheral Equipment".

Indicators

Weighing data

without time and date

Weighing data with

time and date

1 Press and hold the PRINT key until reCall is displayed, then

release the key.

2 Press the RANGE key to display out . 3 Press the PRINT key to display out "n"o with "no" blinking. 5 Press the RE-ZERO key to display out "g"o with "go" blinking.

6 Press the PRINT key to transmit all data using the RS-232C interface.

7 The balance displays Clear when all data is transmitted.

Press the CAL key to return to the weighing mode.

Indicators

Weighing data

without time and date

Weighing data with

time and date

Deleting all memory data at one time

1 Press and hold the PRINT key until reCall is displayed, then release the key.

2 Press the RANGE key several times to display Clear . 3 Press the PRINT key to display Clr "n"o with "no" blinking. 4 Press the RE-ZERO key to display Clr "g"o with "go" blinking.

5 Press the PRINT key to delete all data

6 The balance displays end and returns to the weighing mode.

BM series 61

Page 64

12.3. Data Memory For Calibration And Calibration Test

Features

Calibration data (when and how it is performed) and calibration test

data can be stored in memory. All the data in memory is available to be output at one time to a printer

or personal computer. Up to 50 data sets of the latest calibration or calibration test can be

stored. When the memory capacity has been reached, "fUl" is

displayed in the upper left of the display.

Indicato

Storing the calibration and calibration test data

Note If "Clr" appears blinking in the upper left of the display, delete the data in memory.

Store the calibration and calibration test data as follows:

1 Set the "Data memory ( 2 Set the "GLP output (info)" parameter to "1" or "2".

3 With the settings above, each time calibration or calibration test is performed, the

data is stored automatically.

data)" parameter to "2".

Transmitting the memory data

Note

Confirm that the "Serial interface (5if)" parameters are set properly.

Refer to "10. Function Table" and "15.2. Connection To Peripheral Equipment". Confirm that the "Data memory" parameter is set to "data 2".

1 Press and hold the PRINT key until out is displayed, then release the key. 2 Press the PRINT key to display out "n"o with "no" blinking. 3 Press the RE-ZERO key to display out "g"o with "go" blinking.

4 Press the PRINT key to transmit all memory data using the RS-232C interface.

5 The balance displays Clear when all memory data is output.

Press the CAL key to return to the weighing mode.

In the upper left

Calibration repor

Deleting data stored in memory

1 Press and hold the PRINT key until out is displayed, then release the key.

of the display

2 Press the SAMPLE key to display Clear . 3 Press the PRINT key to display Clr "n"o with "no" blinking. 4 Press the RE-ZERO key to display Clr "g"o with "go" blinking.

5 Press the PRINT key to delete all data.

6 The balance displays out and returns to the weighing mode when all

the data has been deleted.

62 BM series

In the upper left

of the display

Calibration repor

Page 65

13. 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 from

getting 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: the

weighing pan, pan support, breeze break ring, fine range

ring and dust plate )

Remove them first. 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.

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.

Underhoo

Bottom

BM series 63

turdy table

equipped with a hole.

Weighing pan

Page 66

14. Density Measurement (Specific gravity)

The balance is equipped with a density mode. It calculates the density of a solid using the mass

value of a sample in air and the mass value in liquid. We recommend the use of the AD-1653

Density Determination Kit.

Note

The density mode was not selected for use when the balance was shipped from the factory.

To use this mode, change the function table settings to activate the density mode.

Refer to "5.2. Storing Active Units". When the density mode is selected, the response adjustment function can not be used. The minimum display is 0.0001 g while using the density mode.

Formula to obtain the density

The density can be obtained by the following formula. Where ρ : Density of a sample A : Mass value of a sample in air B : Mass value of a sample in liquid ρ0 : Density of a liquid

ρ = x ρ0 A - B

Prior to measurement: Changing the function table

Prior to measurement, change the function table as follows:

1 Selecting the density mode. The density mode is available as one of the weighing units.

Select it by pressing the MODE key. To use the mode, select it (unit of Unit .) in the function

table. Refer to "5.2. Storing The Active Units".

2 Selecting a way to set the density of a liquid. Select the liquid density input method from the function table below.

Note

The following function table is displayed only when the unit of Unit is active. The table of the

density mode (d5 fnc) is displayed next 5if.

Class Item and Parameter Description

ldin

Density function

64 BM series

Liquid density input

0 Water temperature d5 fnc

1 Liquid density

factory setting.

Page 67

Entering the density of a liquid

Two ways to set the density of a liquid are available in the function table, "Liquid density input (ldin): by

entering the water temperature or by entering the density directly.

1 Press the MODE key as necessary to select the density mode.

Press and hold the MODE key to select to "water temperature" or "liquid density".

In the density mode : The unit is "g (gram)". The processing indicator ( ) blinks.

Response adjustment is off.

If you cancel the density mode, press the MODE key.

Entering the water temperature ( ldin 0 )

2 The water temperature currently set (unit:°C, factory setting : 25°C) is displayed.

Use the following keys to change the value.

RE-ZERO (+)key

....

The key to increase the temperature by one degree. (0°C is displayed after 99°C)

MODE (-)key.......... The key to decrease the temperature by one degree.

(99°C is displayed after 0°C)

PRINT key............The key to store new water temperature, display end and return to the

density mode. Proceed to Step 1.

CAL key...............The key to cancel the change and return to the density mode.

Proceed to Step 1.

The relation between the water temperature and density

°C +0 +1 +2 +3 +4 +5 +6 +7 +8 +9

0 0.99984 0.99990 0.99994 0.99996 10 0.99970 0.99961 0.99949 0.99938 20 0.99820 0.99799 0.99777 0.99754 30 0.99565 0.99534 0.99503 0.99470 40 0.99222 0.99183 0.99144 0.99104 50 0.98804 0.98758 0.98712 0.98665 60 0.98320 0.98268 0.98216 0.98163 70 0.97777 0.97720 0.97662 0.97603 80 0.97180 0.97117 0.97054 0.96991 90 0.96532 0.96465 0.96397 0.96328

0.99997 0.99996 0.99994 0.99990 0.99985 0.99978

0.99924 0.99910 0.99894 0.99877 0.99860 0.99841

0.99730 0.99704 0.99678 0.99651 0.99623 0.99594

0.99437 0.99403 0.99368 0.99333 0.99297 0.99259

0.99063 0.99021 0.98979 0.98936 0.98893 0.98849

0.98618 0.98570 0.98521 0.98471 0.98422 0.98371

0.98110 0.98055 0.98001 0.97946 0.97890 0.97834

0.97544 0.97485 0.97425 0.97364 0.97303 0.97242

0.96927 0.96862 0.96797 0.96731 0.96665 0.96600

0.96259 0.96190 0.96120 0.96050 0.95979 0.95906

g/cm3

Entering the density directly ( ldin 1 )

The density currently set (unit : g / cm3, factory setting : 1.0000g / cm3) is displayed. Use the following keys to change the value. The range to set the density is 0.0000g / cm3 to 1.9999g / cm3.

RE-ZERO1(+)key

RANGE1(-)key

PRINT key

CAL key

...............

BM series 65

....

........

............

The key to set the value of the digit selected.

The key to select the digit to change the value.

The key to store the change, display end and return to the density mode. Proceed to Step 1.

The key to cancel the change and return to the density mode. Proceed to Step 1.

Page 68

Measuring the density ( specific gravity )

Note If the liquid temperature or the type of liquid is changed during measurement, again

input the value of the liquid density as necessary. The density display is four decimal places. The minimum display can not be changed with the RANGE key.

The density (or specific gravity) is displayed after "Mass

measurement in air" and "Mass measurement in liquid". The procedure of each measurements is as follows: g : gram. : the processing indicator.

1 Enter the density mode. (g lights. blinks.)

Place nothing on both pan and press the RE-ZERO key to display zero.

2 Place the sample on the pan in air. (g lights. blinks.)

If the weight value is stored or output, press the PRINT key to store it after a stable weight value is displayed. Press the RANGE key to decide the weight value in air and proceed to next step.

Note If negative value or e (out of range) is displayed,

the RANGE key is inactive.

3 Move the sample to the pan in liquid. (g lights. lights.)

If the weight value is stored or output, press the PRINT key to store it after a stable weight value is displayed. Press the RANGE key to decide the weight value in liquid and proceed to next step.

Note If e (out of range) is displayed, the RANGE key

is inactive.

4 If the density value is stored or output, press the

key to store it. (Unit : . g turns off. lights.) Press the RANGE key to measure another sample and proceed to step 2.

5 If the liquid temperature or the type of liquid is changed

during measurement, input again the value of the liquid density as necessary.

6 Press the MODE key to proceed to other modes.

Weighing in air.

g lights. blinks.

Weighing in air. g lights. blinks.

Output or stor

Weighing in liquid. g lights. lights.

Output or stor

Density display. g turns off. lights.

Output or stor

From "Entering the

density of a liquid"

Place sample on

the pan in air

Move sample from the pan in air to the

pan in liquid

Remove sampl

66 BM series

Page 69

15. Standard Input And Output Interface

15.1. RS-232C Interface

The balance is a DCE device. Connect the balance to a personal computer (DTE) using a straight

through cable.

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 bit Code : ASCII

Data bits

Startbi

D-Sub 9 pin assignments

Pin No. Signal name Direction Description

1 2 TXD Output Transmit data 3 RXD Input Receive data 4 5 SG - Signal ground 6 DSR Output Data set ready 7 RTS Input Request to send 8 CTS Output Clear to send 9

No connection

Stop bit

Parity bi

RS-232C

-5V to -15V +5V to +15V

#4-40UNC

Signal names of the balance side are the same as the DTE side with TXD and RXD reversed.

BM series 67

Balance side

DCE

+5V

Inside of balance

TXD 2

RXD 3 RTS 7

CTS 8

DSR 6 SG 5

Computer side

DTE

RXD

TXD

RTS CTS

DSR

Terminal example

Page 70

15.2. Connection To Peripheral Equipment

Connection to an AD-8121B printer

Preset the following parameters to use the AD-8121B printer.

Factory settings

0 0,1,2 3 0,1,2

0 off off off, on

0 0 0 0,1,2,3

0 off off off, on #2

0 off off off, on

2 2 2 2

0 0 0 0

0 0 0 1

dout

Data output

5if

Serial interface

Class Item and Parameter

prt

Data output mode

ap-p

Auto print polarity

ap-b

Auto print difference

5-id

ID number output

d-no

Data number output

5-td

Time/Date output

pU5e

Data output pause

at-f

Auto feed

bp5

Baud rate

btpr

Data bit, parity bit

Crlf

Terminator

type

Data format

#1 Set parameters when auto print mode A or B (prt 1 or 2) is selected. #2 Set 1 when multiple lines are printed. Example: When appending ID number, set 1.

Notes

Refer to "11.2. GLP Report" concerning print samples. Settings of AD-8121B

MODE

MODE 1

MODE 2

MODE 3

DIP switch No.3 : Handling unstable data

AD-8121B DIP switch

MODE

1 2 3 4

MODE

Print at receiving data. Standard mode, statistic mode

Print by DATA key operation or built-in timer. Standard mode, interval mode, chart mode

Print at receiving data. Dump print mode

MODE

ON Print OFF Not printed DIP switch No.4 : Data input specifications (Interface selection) ON Current loop

MODE

OFF RS-232C

AD-8121B

MODE 1

1 2 3 4

AD-8121B

MODE 2

Not

necessary

Description

AD-8121B

MODE 3

68 BM series

Page 71

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 a

personal computer using the RS-232C interface. Before connection, read the personal computer manual thoroughly. Use a standard DCE cable for connection (cable type: straight-through).

Using Windows Communication Tools Software (WinCT)

When Windows is used as an operating system in a personal computer, the provided WinCT

software can be used to transmit the weighing data to the personal computer.

The WinCT software has two communication methods: "RsCom" and "RsKey". Refer to the

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 using

a printer connected to the personal computer.

When several ports of a personal computer have balances connected, the personal computer can

communicate with each balance simultaneously. RsCom can share a personal computer with other application software. RsCom can receive the balance GLP report.

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. RsKey can receive the balance GLP report.

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 to

obtain 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 weighing

data" to the balance and controls the balance.

Printing the balance GLP report using your printer

The balance GLP report can be printed using a printer connected to the personal computer.

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 the balance memory function

The data can be stored in the balance’s memory. Of the data stored, the weighing data and

calibration data can be transmitted to a personal computer at one time.

Using a personal computer as an external indicator

With the "RsKey" test mode function, a personal computer can be used as an external weight

indicator for the balance. (To do this, set the balance data output mode to stream mode.)

BM series 69

Page 72

Connection to a computer using the USB Interface

Features

The weighing data can be transmitted to a personal computer when connecting the balance and

personal computer by the USB interface. The operation system must be Windows 98 or a later version. The USB interface uses standard device driver software and does not require installation of

special driver software. When simply using the USB interface and cable, weighing data can be

transmitted. The data can be transmitted to most application software (ex.: EXCEL, WORD, note pad).

Cautions

The balance can transmit the weighing data without the header and unit. The USB Interface of the balance can not receive the command that controls the balance.

When using the command, connect to the RS-232C interface of the balance. When

connecting the USB Interface of a personal computer to the RS-232C interface of the

balance, use the USB converter (AX-USB-9P). Do not use the screensaver or suspend mode of a personal computer.

Using the USB Interface

1 Start the Windows of the personal computer.

Connect the AC adaptor to the balance and turn on the display with the ON:OFF key.

2 Connect the personal computer to the balance using the USB cable.

Note: Do not use stream mode of data output mode (dout, prt 3).

3 At the first connection only, the USB driver software is automatically installed. 4 Open the application (ex.: EXCEL) that is to receive the weighing data.

Move the cursor onto the position to input the weighing data.

5 Press the PRINT key to input the weighing data at the position of the cursor. 6 When finishing the operation, remove the USB cable.

Examples

Case 1: Transmitting the weighing data with key operation

Data output mode of the balance: Key mode (factory settings), dout, prt 0 When pressing the PRINT key, the weighing data is transmitted.

It is a basic use.

Case 2: Transmitting the stable weighing data

Data output mode of the balance: Auto print mode A and B, dout, prt 1 and 2 When placing a sample of weighing matter and displaying the

stabilization indicator , the weighing data is transmitted.

This mode is useful when repeating the weighing.

Case 3: Transmitting the weighing data periodically

Data output mode of the balance: Interval mode, dout, prt 3, data 1 and int The weighing data is transmitted periodically.

The interval time: 2, 5, 10, 30 seconds, 1, 2, 5, 10 minutes.

70 BM series

Page 73

15.3. Commands

15.3.1. Command List

Note A command has a terminator added, that is specified using "5if, Crlf" of the function

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

CAL

OFF ON P PRT R RNG TR TST U

Commands to request data

?ID ?PT ?SN ?TN

Command to set data

PT:∗∗∗.∗∗∗∗ g

Same as the 1CAL1 key. Calibration using the internal mass. Turns the display off. Turns the display on. Same as the ON:OFF key. Turing the display on or off. Same as the

PRINT key.

Same as the RE-ZERO key. Zero display. Same as the RANGE key. Changing the minimum display. Tares the balance. Canceling the container’s weight.. Perform calibration test.. Calibration test using the internal mass. Same as the MODE key. Changing the unit.

Requests the identification number. Outputs the tare value. Request the serial number of the balance. Request the model name of the balance.

Sets the tare value.

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.

Command PT:∗∗∗.∗∗∗∗ g sets the tare value digitally.

An example of this command sets a negative target value and fills with the sample until the display becomes zero. For details, refer to page 75. Step 1

Place a container.

Step 2

Set the display to zero using the R command.

Step 3

Set a target value using the PT: command.

BM series 71

Page 74

15.3.2. 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 balance

transmits 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 balance

transmits an error code (EC, Exx).

When the balance receives a command to control the balance and can process it, the balance

transmits the acknowledge code.

<AK> (06h) Acknowledge in ASCII code.

Among commands to control the balance, the following transmit the acknowledge code both

when the balance receives the command and when the balance has accomplished the command.

If the command 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 mass)

ON command (Display ON command)

P command (Display ON/OFF command)

R command (RE-ZERO command)

TR command (Tare command)

TST command (Calibration test 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 the

command again. xx is error code number.

15.3.3. 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.

72 BM series

Page 75

15.3.4. 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 Balance

ON command

Standby mode

Command received

All segments

R command (Re-zeroing the display)

Computer Time Balance

R command

All segments are displayed

Command completed

Zero display

Weighing mode

Command received

In process

Command completed

Zero display

CAL command (Calibration with internal mass)

Computer Time Balance

CAL command

BM series 73

Zero display

Command received

Command completed

Zero display

Page 76

Error code

This example is of an error using the R command. "erCd on" is used. The balance transmits an error

code when the received command can not be achieved.

Computer Time Balance

R command

Weighing mode (unstable)

CAL command

Command received In process

When the R command can not be achieved due to unstable weighing:

Error code When the CAL command is received, the balance returns to the weighing mode. Command completed. Weighing mode

Weighing with a tare

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

Computer Time Balance

R command

TR command

S command

?PT command

Sets the display to zero Command received In process

Command completed Zero display

Place a container

Tares Command received In process

Command completed Zero display

(Net value)

(Tare value)

74 BM series

Page 77

Setting a negative target value and filling with a sample until the display becomes zero

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

Computer Time Balance

R command

PT: command to set a target weight of 10 g

Place a container

Before command execution

Command received

In process

Command completed

Zero display

Command received

Target weight display

Fill with sample until the display becomes zero

BM series 75

Page 78

16. Maintenance

16.1. Treatment Of The Balance

Clean the balance with a lint free cloth that is moistened with warm water and a mild detergent. 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. Consider "3. Precautions" when operation the balance.

16.2. Error Codes

Display Error code Description

Internal error

EC,E00

EC,E11

If displaying this error continuously, contact your local A&D dealer to repair the balance.

Stability error

The balance can not stabilize due to an environmental problem. Check around the pan. 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

EC,E17

EC,E20

EC,E21

Internal mass error

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

Internal mass error

The internal mass application mechanism does not function properly. Perform the weighing operation from the beginning again.

Calibration weight error

The calibration weight is too heavy. Confirm the calibration mass value. Press the 1

Calibration weight error

The calibration weight is too light. Confirm the calibration mass value. Press the 1CAL1 key to return to the weighing mode.

Overload error

A sample beyond the balance weighing capacity has been placed on the pan. Remove the sample from the pan.

Weighing pan Error

The mass value is too light. Confirm that the weighing pan is properly installed and calibrate the balance.

CAL1 key to return to the weighing mode.

Sample mass error

76 BM series

The balance can not store the sample for the counting mode or for the percent mode because it is too light. Use a larger sample.

Page 79

Display Error code Description

Unit mass error

The sample unit mass for the counting mode is too light. Storing and using it for counting will cause a counting error. Add samples to reach the specified number and press the 1PRINT1 key. Pressing the 1PRINT1 key without adding samples will shift the balance to the counting mode. But, for accurate counting, be sure to add samples.

Automatic response adjustment zero error

The automatic response adjustment can not be performed because there is something on the pan. Clear the pan. Press the 1CAL1 key to return to the weighing mode.

Automatic response adjustment unstable error

The automatic response adjustment can not be performed because the

(Check NG)

mass value is unstable. Check the ambient conditions such as breeze, vibration and magnetic fields, also check the weighing pan. Press the 1CAL1 key to return to the weighing mode.

Clock battery error

The clock backup battery has been depleted.

Press any key and set the time and date. The clock and calendar

function works normally as long as the AC adapter is connected to the

balance. If this error appears frequently, contact the local A&D dealer.

(Blinking)

(Illuminated)

EC,E00

Memory full

The amount of weighing data in memory has reached the maximum

capacity. Delete data in memory to store new data. For details, refer to

"12. Data Memory".

Memory full

The amount of calibration or calibration test data in memory has reached

the maximum capacity (50 sets).

The data in memory will be deleted automatically to store new data. For

details, refer to "12. Data Memory".

Memory type error

Type of memory set in the function table and type of data stored are

different. For details, refer to "12. Data Memory".

Memory data error

A fatal error occurs in the stored data. To use the memory function, erase

all the old data and release the error. For details, refer to "12.1. Notes

on Using Data Memory".

Communications error

A protocol error occurred in communications.

Confirm the format, baud rate and parity.

Undefined command error

EC,E01

An undefined command was received.

Confirm the command.

BM series 77

Page 80

Display Error code Description

Not ready

A received command can not be processed.

EC,E02

EC,E03

EC,E04

EC,E06

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.

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 the communication.

Excess characters error

The balance received excessive characters in a command.

Confirm the command.

Format error

A command includes incorrect data.

Example:

The data is numerically incorrect. Confirm the command.

Parameter setting error

EC,E07

Other error code

The received data exceeds the range that the balance can accept.

Confirm the parameter range of the command.

If an error described above can not be released or other errors are

displayed, contact the local A&D dealer.

16.3. Other Display

When this indicator blinks, automatic self calibration is required. The indicator

blinks when the balance detects changes in ambient temperature. If the balance is not used for several minutes with this indicator blinking, the balance performs automatic self calibration. The blinking period depends on the operating environment.

Advise The balance can be used while this indicator is blinking. We recommend that you

perform automatic self calibration for precision weighing.

78 BM series

Page 81

16.4. Checking The Balance Performance And Environment

The balance is a precision instrument. When the operating environment or the operating method

is inadequate, correct weighing can not be performed. Place a sample on the pan and remove it, and repeat 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 assembly installed correctly? Is the RE-ZERO key pressed before placing a sample on the weighing pan? Is the sample placed in the center of the weighing pan? Is the fine range ring installed for weighing with a minimum display of 0.01 mg for the BM-252? Is the fine range ring and small fine range ring installed for weighing with a minimum display of

0.001 mg for the BM-22 and BM-22?

Has the balance been calibrated using the internal mass (one-touch calibration)? Has the balance been warmed up for one hour before weighing?

Sample and container

Has the sample absorbed or lost moisture due to the ambient conditions such as temperature and

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 the

center of the weighing pan. Check the balance repeatability, linearity and calibrated value using external weights with a

known value.

16.5. 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

the following 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.

BM series 79

Page 82

∗3 ∗1 ∗2 ∗2

17. Specifications

BM-20 BM-22 BM-252 BM-500 BM-300 BM-200

Weighing capacity 22 g

Maximum display 22.000084 g

Minimum display 0.001 mg

Repeatability (Standard deviation)

Linearity ±0.010 mg

Stabilization time (Typical at FA ST)

Sensitivity drift ±2 ppm/°C (10 °C to 30 °C, Automatic self calibration: OFF) Operating environment 5 °C to 40 °C, 85 %RH or less (No condensation)

0.0025 mg

Approx. 8 seconds

Approx. 10 seconds

22 g

5.1 g

22.00008 g

5.100009 g

0.01 mg

0.001 mg

0.01 mg

0.004 mg ±0.02 mg ±0.010 mg

250 g 520 g 320 g 220 g

250.00084 g 520.0084 g 320.0084 g 220.0084 g

0.01 mg 0.1 mg

0.03 mg 0.2 mg 0.1 mg

±0.10 mg ±0.5 mg ±0.3 mg ±0.2 mg

Approx. 3.5 seconds

Display refresh rate 5 times/second or 10 times/second

Environmental sensors

Minimum unit mass

Number of

mode

Counting

samples Minimum 100%

reference mass

mode

Minimum display 0.01 %, 0.1 %, 1 % (Depends on the reference mass stored.)

Percent

Interface USB and RS-232C with Windows Communication Tools Software WinCT

External calibration weight

Size of loading area for weighing mm

External dimensions 259(W) x 466(D) x 326(H) mm

Resolution: Temperature ±1.5 °C, Humidity ±10 %, Air pressure ±10 hPa

Applicable range: 5 °C to 40 °C

0.1 mg

10, 25, 50 or 100 pieces

1 mg 10 mg

20 g 10 g

5 g 2 g 1 g

Weighing pan: φ25,

Filter weighing: φ50, φ95

Test tube holder: φ12

20 g 10 g

5 g 2 g 1 g

200 g 100 g

50 g 20 g 10 g

Weighing pan: φ90 Test tube holder: φ12 (Option)

500 g 300 g 200 g 100 g

50 g

300 g 200 g 100 g

50 g

200 g 100 g

50 g

Power supply & AC adapter type

Mass Approx. 10 kg

The operating environment does not include excessive change of ambient temperature, humidity,

vibration, drafts, magnetic fields and static electricity.

The internal mass may change due to corrosion or other damage caused by the operating environment,

or due to aging. Check the internal mass periodically and correct the internal mass 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

The repeatability for 1 gram within the weighing capacity.

∗3

The repeatability for 100 gram within the weighing capacity.

80 BM series

Power consumption: Approx. 30VA (supplied to the AC adapter )

Confirm that the adapter type is correct for the local voltage and power

receptacle type.

Page 83

17.1. External Dimensions

Unit: mm

BM-20, BM-22

BM-200, BM-300 BM-500, BM-252

A: Diameter of the weighing pan

B: Height of the weighing pan 54 50

C: The inside diameter of the

test tube holder

BM series 81

Weighing pan: φ25 Weighing pan for filter: φ50, φ95

φ12 φ12 (Option)

Weighing pan: φ90

Page 84

17.2. Options And Peripheral Equipment

Ethernet Interface BM-08

The interface to connect the balance to a LAN. Accessory: The "WinCT-Plus" data communication software.

The software can acquire data from

multiple balances connected to a LAN.

The software can control these balances

with commands.

The software can acquire data transmitted

from balances. Example: When pressing the PRINT key of the balance, data is output and is acquired by the computer.

The stored data can be used with

Microsoft EXCEL (if installed).

Pipette Accuracy Tester BM-014

This option can be used to inspect the volume

dispensed from the pipette.

Accessory evaporation trap is used to prevent

the evaporation of the test liquid inside it.

The WinCT-Pipette software converts the test

liquid mass into a volumetric value.

Electrode Unit of the DC Static Eliminator AX-BM-NEEDLESET (4 pieces)

Use these electrode units for replacement parts of the

DC static eliminator built into the balance.

Replace all four units with new ones at the same time. Refer to "6.5. Built-in DC Static Eliminator" for the

replacement.

Display Cover AX-BM-031 (5 pieces)

This option is the same as the accessory display cover.

Test Tube Holder AX-BM-032

This option is the same as the accessory test tube holder.

82 BM series

Page 85

Aluminum Pans

This option is the same as the accessory aluminum pans

used for weighing of a very small amount of sample.

Name and description Order code View

Round aluminum analytical pan (L) φ15 0.8 100 pieces AX-ROUND-PAN-L

Round aluminum analytical pan (M) φ12 0.3 100 pieces AX-ROUND-PAN-M

Round aluminum analytical pan (S) φ8 0.05 100 pieces AX-ROUND-PAN-S

AD-1653 Density Determination Kit Cautions

The BM-20 and BM-22 can not use this kit.

Weigh in water - Weigh in the air

Example

Temperature Water density

0°C 0.99984 g/cm3 10°C 0.99970 g/cm3 20°C 0.99820 g/cm3 30°C 0.99565 g/cm3

Weigh in air

10.0000 g

10.0000 g － 9.5334 g

x water density = sample density

x 0.9970 g/cm3 = 21.4 g/cm3

AD-1683 DC Static Eliminator

The eliminator is able to dissipate static electricity on

a charged sample.

The eliminator does not use a ventilator and can be

used in precision powder weighting.

AD-8121B Printer

Compact dot-matrix printer Statistical function, clock and calendar function, interval print

function, graphic print function, dump print mode 5 x 7 dots, 16 characters per line Print paper (AX-PP143, 45 (W) x 50 (L) mm , ø65 mm) AC adapter or alkaline battery

BM series 83

Page 86

AX-USB-9P-EX USB Converter

AX-T

Adds a COM port to a PC. Enables bi-directional communication between the PC and the balance when a USB driver is installed. Can use serial communication software such as WinCT on a PC without COM ports. An RS-232C cable is provided to connect the USB converter to the balance.

To USB port on a PC

The USB serial converte

The RS-232C cable provided

(D-sub 9-pin)

The RS-232C interface

on the balance

AX-T-314A-S External key Plug

This plug produces the same operations as pressing

the RE-ZERO and PRINT keys. It enables remote

control of the balance using an external switch. This operation must connect the GND line to the PRINT

or RE-ZERO line for at least 100 milliseconds.

Te r m i na l

External key Plug

-314A-S

Cap

AX-SW128 Foot switch

The switch can be used to connect the external key plug

and used to the RE-ZERO or PRINT keys.

Note When the foot switch is to be used, prepare the

AX-SW128 and AX-T-314A-S beforehand.

84 BM series

Foot switch AX-SW128

Page 87

Other Options

Order code Name and description

Anti-vibration table

Approximately 24kg, Artificial stone (Terrazzo).

AD-1670

Use this table when unstable weighing is caused by vibration coming from the floor. Use the AD-8922 remote controller to avoid a weighing error by a slight table tilt

that key operation may make.

AD-1682

AD-1684

AD-1688

AD-1689

AD-8526

AD-8920A

Rechargeable Battery

This option allows use of the balance in a place where AC power is not available.

Electrostatic field meter

This option measures the amount of the static charge on the sample, tare or

peripheral equipment and displays the result. If those are found to be charged, discharge them using the AD-1683 DC static eliminator.

Data logger

When connected to the RS-232C interface of the balance, the AD-1688 can store

the data in an environment where a personal computer can not be used.

Tweezers for calibration weight

This option is the same as the tweezers provided as a standard accessory and is

used when calibrating the balance using an external weight.

LAN Converter

This option can be used to connect the RS-232C interface of the balance to the

Ethernet (LAN) port of a computer. This allows management of the balance weighing data with a computer connected to a network.

Remote Display

This option can be connected to the balance using the RS-232C interface.

Remote Controller

AD-8922A

AX-MX-36 Tweezers for filter weighing 2 pieces

This option can be connected to the balance using the RS-232C interface and can

control the balance remotely.

Various options such as comparator output or analog output are available.

BM series 85

Page 88

18. Terms/Index

18.1. Terms

Calibration Adjustment of the balance so that it can weigh accurately.

Calibration weight A mass used for calibration.

Data number Numbers assigned sequentially when weighing data or unit weight is stored.

Digit The minimum weighing value available. Used for the balance, one digit is

the smallest mass that can be displayed.

Environment Ambient conditions such as vibration, drafts, temperature, static electricity

and magnetic fields which affect the weighing operation.

External weight The weight that you have.

GLP Good Laboratory Practice.

GMP Good Manufacturing Practice.

Internal mass Built-in calibration weight.

ISO International Organization for Standardization

Micro tube 2 and 1.5 micro tubes in the market

can be weighed with the test tube holder that is an accessory of BM-20 and BM-22.

Repeatability Variation in measured values obtained when the same mass is placed and

removed repetitively. Usually expressed as a standard deviation.

Example: "Standard deviation = 1 digit " means that may occur a weighing error within

±1 digit in the frequency of approx. 68% when weighing the same mass repeatedly.

Re-zero To set the display to zero.

Sensitivity drift An affect that a change in temperature causes to the weighing data.

Expressed as a temperature coefficient.

Example: Temperature coefficient = 2 ppm/°C, If a load is 10 g and the temperature

changes by 10°C, the value displayed changes by the following value.

0.000 002 ppm/°C x 10 °C x 10 g = 0.0002 g

Micro tube

Test tube holder

Stabilization time Time required after a sample being placed, until the stabilization indicator

illuminates and the weighing data is displayed.

Tare To cancel the mass value of a container which is not to be included in the

weighing data. Normally, refers to an operation of placing a container and setting the display to zero.

Target mass An external weight used for calibration test

Zero point A weighing reference point. Usually refers to the value displayed when

nothing is on the weighing pan.

86 BM series

Page 89

18.2. Index

Left, Upper, Lighting, Left, Upper, Lighting, Left, Upper, Blinking, Left, Lower, Lighting, Left, Lower, Blinking, Right, Upper, Lighting, Right, Upper, Lighting, Right, Upper, Blinking,

ION mark................................................. 25

Space mark..........................49, 50, 53 - 57

key......................................... 13

CAL key.............................................13, 39

ION key ............................................. 13, 25

MODE key ..................................13, 14, 18

PRINT key......................................... 13, 39

RANGE key ...................................... 13, 39

RE-ZERO key ...................................13, 39

SELECT key ........................................... 13

8922

AD-8922A control .............................26, 43

AC adapter ...............................................6, 7, 9, 10, 12

ACAI ................................................................. 23

AD-1653 Density determination kit ........................ 83

AD-1670 Anti-vibration table .................................. 85

AD-1682 Rechargeable battery ............................. 85

AD-1683 DC static eliminator................................. 83

AD-1684 Electrostatic field meter .......................... 85

AD-1688 Weighing data logger...................... 4, 6, 85

AD-1689 Tweezers for calibration weight .......... 6, 85

AD-8121B Printer...................................53 - 57, 68, 83

AD-8526 LAN converter......................................... 85

AD-8920A Remote display ....................................... 85

AD-8922A Remote controller ............................. 43, 85

Air buoyancy................................................................ 11

Air pressure ........................................................... 13, 27

AK code .......................................................... 72 - 75

Anti theft device............................................................. 7

Anti-vibration table AD-1670 ......................... 10, 85

ap-b

Auto print difference.................... 41, 45, 68

ap-p

Auto print polarity........................ 41, 45, 68

ar-d

Zero after output ............................... 42, 45

at-f

Auto feed........................................... 42, 68

Auto display-ON ....................................................41, 44

Auto feed ................................................................. 42

Auto print ........................................................... 41, 45

AX-BM-031 Display cover .......................................... 82

Stabilization indicator........13, 20, 39

Process indicator.................... 13, 31

Density mode ............................... 13

Standby indicator.......................... 13

Prior notice of calibration.. 13, 32, 78

Shut side glass door..................... 20

Interval mode, Standby .......... 13, 59

Interval mode, Action.............. 13, 59

Response indicator ...... 13

AX-BM-032 Test tube holder.................... 82

AX-BM-NEEDLESET Electrode units......................82

AX-MX-36 Tweezers ..........................6, 85

AX-ROUND-PAN-S Aluminum pan,φ8, 0.05 ...83 AX-ROUND-PAN-M Aluminum pan,φ12, 0.3 ... 83 AX-ROUND-PAN-L Aluminum pan,φ15, 0.8 ... 83

AX-SW128 Foot switch .....................26, 84

AX-T-314A-S External key plug............26, 84

AX-USB-9P USB Converter .....................84

ba5fnc

Baud rate ...........................................................42, 67

beep

Best condition ..............................................................10

BM-014 Pipette accuracy tester ...........................82

BM-08 Ethernet interface................................4, 82

Bottle holder...................................................................6

bp5

Baud rate...........................................42, 68

Breeze break ring ......................................................6, 8

btpr

Bubble spirit level.......................................................7, 9

Cal

Cal e

-Cal e Cal in

Calibration ...........................................................31, 86

Automatic self calibration...............................

Calibration using an external weight....................... 37

Correcting the internal mass value ...... 31, 36, 37, 43

One-touch calibration ..................................31, 32, 37

Calibration report .......................... 31, 32, 34, 53, 55, 58

Calibration test

Calibration test using an external weight..........31, 35

Calibration test using the internal mass......31, 33, 34

Calibration test report .................................... 33 - 56, 58

Calout CC out CC in

Celsius & Centigrade................................................... 27

CH 0 CH ng

Characters for display..................................................52

Cl adj Clear

Clock function ..................................................27, 80, 83

Clr

Initializing the balance.................38, 58, 62

Clr

Memory error...........................................76

Clr go Clr no

Command ................................................... 71, 73 - 75

Environment & Display .....................39, 41

beep.........................................................41

Data bit, parity bit...............................42, 68

Automatic self calibration ........................32

Calibration error. Too heavy ....................76

Calibration error. Too light .......................76

One-touch calibration........................32, 53

31, 32, 37, 78

Calibration using an external weight ...34, 55

Calibration test ..................................35, 56

Calibration test ..................................33, 54

CHECK 0...........................................29, 76

CHECK NG .......................................29, 76

Clock............................................41, 48, 51

Delete memory data..........................61, 62

Initialization, Perform............ 38, 58, 61, 62

Initialization, Cancel ............. 38, 58, 61, 62

BM series 87

Page 90

Communication function ............................................. 80

Cond

Condition...............................29, 30, 41, 43

Container .................................................6, 20, 22, 24

Counting mode............................................................ 22

CR Carriage return...........................49, 53 - 57

Crlf

Terminator ...................................42, 68, 71

C5 in

Internal mass correction ................... 36, 43

-d-

Weighing data................................... 58, 61

d 1.0000 data

Data bits ................................................................. 42

Data bits & parity bits................................................... 67

Data format ...............................................42, 46, 49, 50

Data memory................................................... 41, 58, 80

Data memory function........................................... 13, 58

Data number........................................13, 42, 47, 59, 86

Data output ................................................................. 42

Data output mode.................................................. 41, 45

Data output pause....................................................... 42

Date ...............................................13, 42, 48, 51

d-dt

Decimal point................................................... 41, 44, 47

Density meter ........................................................ 43, 83

Density ................................................4, 64 - 66, 83

Density mode ..................................... 13, 64

Digit ................................................................. 86

Dimensions ................................................................. 80

Discharge electrode .............................................. 25, 82

Display cover....................................................... 6, 7, 82

Display hold function .............................................41, 44

Display refresh rate ............................................... 41, 44

d-no door

Door state function ...................................................... 43

dout d5 fnc d-t

Dust plate ............................................................... 6, 8

Weighing error. Too heavy...................... 76

-e Weighing error. Too light ......................... 76

Electrode unit of static eliminator ............................ 7, 25

Electrostatic field meter AD-1684 ................... 85

Environment .................................... 3, 10, 11, 13, 27, 79

Environmental sensor ........................................... 13, 27

erCd err

Error code .....................................................43, 74, 76

e-5

Ethernet ............................................................. 4, 82

Evaporation trap.................................................... 44, 82

88 BM series

Initial density ........................................... 65

Data memory .......................41, 58 - 60, 62

Door Sensor............................................ 43

Data number............................... 42, 60, 68

Door sensor function .............................. 43

Data output ...........................41, 42, 45, 68

Density function ................................43, 64

Weighing data with calendar ............58, 61

AK, Error code ...........................43, 72 - 75

Memory data error .................................. 76

External control Input........................ 26, 43

External key jack......................................................7, 84

External key Plug AX-T-314A-S ..................26, 84

FAST ...........................................................29, 30

FCC ...................................................................5

Filter ...............................................................6, 8

Fine range ring..................................................... 6, 8, 11

Foot switch AX-SW128 ........................................26, 84

fUl

Memory full..................................59, 62, 76

Glass door handle .........................................................7

glp

GLP output ...................................... 53 - 57

GLP ................................32 - 35, 42, 52 - 57, 86

GMP .................................................................86

Grounding ................................................................. 11

Grounding terminal.................................................. 7, 11

Hi5

Calibration report...............................58, 62

Humidity ...........................................................13, 27

ID number setting..............................43, 52

ID number .............................................. 42, 43, 47, 52

Influence of magnetic fields................................... 10, 11

Influence of static electricity......................................... 11

info

GLP output .......................... 42, 53 - 57, 62

Inhibition .................................................................37

Initializing ...........................................................37, 38

int

Interval time.............................................41

Interval mode .............. 4, 13, 41, 42, 45, 59

Interval time .................................................................42

ion

Neutralizing time .....................................43

Ion .................................................................25

ionfnc

Joint handle ...................................................................7

Key

Key Operation.................................................. 11, 13, 39

LAN converter AD-8526 ...............................85

ldin

Leveling foot...............................................................7, 9

LF Line feed.................................... 49, 53 - 57

Linearity .................................................................80

Magnetic substance...........................................4, 11, 63

Mass of product ...........................................................80

Maximum display.........................................................80

Micro tube ................................................................. 86

MID. ...........................................................29, 30

Minimum display.......................................................... 80

neutralization function.......................26, 43

CAL Key

ION Key ...........................................................13, 25

MODE Key...................................... 13, 14, 18, 20, 39

PRINT Key.........................................................13, 39

RANGE Key ......................................................13, 39

RE-ZERO Key .............................................13, 20, 39

SELECT Key ...........................................................13

Liquid density input .....................43, 64, 65

Sample mass error............................22, 76

...........................................................13, 39

Key .........................................................13

Page 91

Neutralization......................................................... 25, 43

Operating environment ............................................... 80

out

Report output.................................... 61, 62

out go out no

Pan support ............................................................... 6, 8

Parity ........................................................... 42, 67

Percent mode.............................................................. 24

Permission ................................................................. 37

Pipette ........................................................... 44, 82

ploc pnt p-on

Power consumption .................................................... 80

Power source ..................................................10, 12, 80

Prior notice of calibration................................. 13, 32, 78

Processing indicator Left, Upper, Lighting ....... 13

prt p5 pU5e reCall recend

Rechargeable Battery AD-1682 ........................... 85

Relative Humidity ............................................ 10, 11, 80

Remote Controller AD-8922A................... 10, 85

Remote Display AD-8920A......................... 85

rep te5t

Repeatability.................................................... 28, 80, 86

RESPONSE ................................3, 4, 13, 29, 30, 41, 43

Round aluminum pan.............................................. 6, 83

RS-232C ................................................... 4, 7, 67, 69

RsCom Command mode for WinCT ................... 69

RsKey Data output mode for WinCT ................. 69

rtc pf

Sensitivity drift.............................................................. 80

Separation plate ...........................................6 - 8, 10, 25

Serial interface............................................................. 42

5-id 5if

SLOW ........................................................... 29, 30

Smart range ....................................................... 4, 15, 21

5pd

Specific gravity.............................................4, 64, 66, 83

Specific gravity meter AD-1653 ........................... 83

Stability .......................................................3, 29, 30

Stability band width................................................ 41, 43

Stabilization indicator ................................. 13, 39

Stabilization time....................................................80, 86

Standard deviation....................................................... 28

Standby indicator Left, Lower, Lighting ........... 13

Report output, Start........................... 61, 62

Report output, cancel ....................... 61, 62

Display hold function......................... 41, 44

Decimal point .................................... 41, 44

Resume function............................... 41, 44

Data output mode...........41, 45, 59, 68, 70

Function selection mode .................36 - 38

Data output pause ............................42, 68

Display format for memory data............. 61

End block of output................................. 57

Repeatability test .................................... 28

Clock battery error ............................ 51, 76

ID number output.................. 42, 52, 60, 68

Serial interface ......................42, 45, 46, 68

Display refresh rate..................... 41, 44, 45

5tart

Static electricity ........................................................4, 25

Static eliminator................................. 4, 7, 13, 25, 43, 82

Static eliminator AD-1683 ...........................83

5t-b 5-td

Stop bit ................................................................. 67

5-tp

Stream mode .........................................................41, 45

t 25

Tare .....................................................20, 74, 86

Tare weight ................................................................. 20

Temperature.............................. 4, 11, 13, 27, 48, 66, 80

Temperature output .....................................................42

<TERM> Terminator ...................................... 53 -, 57

Terminator ....................................... 42, 49, 53 - 57, 71

Test tube holder .................................................8, 82, 86

Time .............................................. 13, 42, 48, 51

Timeout

trc t-Up

Tweezers ....................................................... 6, 11, 85

type

Underhook .................................................................63

Unit .....................13 - 15, 17, 18, 21, 43, 50, 80

Tola (India)............................ 14, 15, 18, 50

Unit

USB .........................................................4, 7, 70

USB converter AX-USB-9P ......................84

Water evaporation .......................................................44

Water temperature.......................................................65

Weighing capacity........................................................80

Weighing data logger AD-1688 ...................4, 6, 85

Weighing mode................................................14, 17, 18

Weighing operation...................................................... 11

Weighing pan................................................................. 6

Weighing pan for filter................................................6, 8

Weighing response...................................................... 29

Title block of output ................................. 57

Stability detection ..............................41, 43

Time & Date output....... 42, 51, 58 - 60, 68

Temperature output.................................42

Initial temperature ...................................65

t-Up

.........................................................43

Zero tracking .....................................41, 44

Timeout....................................................43

Data format..................................42, 46, 68

Gram..................................... 14, 15, 18, 50

Milligram ............................... 14, 15, 18, 50

Counting mode............... 14, 15, 18, 22, 50

Percent mode................. 14, 15, 18, 24, 50

Ounce (Avoir) ....................... 14, 15, 18, 50

Troy Ounce........................... 14, 15, 18, 50

Metric carat........................... 14, 15, 18, 50

Momme ................................ 14, 15, 18, 50

Pennyweight......................... 14, 15, 18, 50

Grain (UK) ............................ 14, 15, 18, 50

Tael (preset in the factory) ... 14, 15, 18, 50

Messghal

Density mode ..............................14, 50, 66

Centigrade.........................................14, 27

Unit mode....................................17, 43, 64

................................ 14, 15, 18, 50

BM series 89

Page 92

Weight

Adjustable range ..................................................... 31

Calibration mass .............................12, 31, 34, 80, 86

Correction of mass value ........................................ 43

External weight............................................ 34, 35, 86

Internal mass........................... 28, 31 - 33, 43, 80, 86

Target mass value ............................................. 35, 86

Weight or Mass ...............................................31, 34, 35

Weighing pan................................................................. 8

WinCT Communication Tools.............. 4, 6, 69

WinCT-Pipette Software to inspect pipette...............82

WinCT-Plus Software to connect to LAN .............82

Windows communication software WinCT .......6, 69

ymd

Year, month, day .....................................51

Zero

Automatic re-zero ....................................................42

Re-zero ...........................................................13, 86

Zero point................................................................. 86

Zero tracking......................................................41, 44

90 BM series

Page 93

MEMO

BM series 91

Page 94

MEMO

92 BM series

Page 95

Page 96

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BackCover 1WMPD4000058J

A&D BM-20 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual