A&D BM series User manual

Analytical Balance
BM-20
BM-22
BM-252
BM-200
BM-300
BM-500
1WMPD4002195D

© 2018 A&D Company, Limited. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated into any language in
any form by any means without the written permission of A&D Company, Limited.
The contents of this manual and the specifications of the instrument covered by this manual are subject
to change for improvement without notice.
Windows, Word and Excel are registered trademarks of Microsoft Corporation.

BM series 1
Contents
Basic Operation
1. Introduction.............................................................................................................................. 3
1.1. Features............................................................................................................................... 4
1.2. Compliance.......................................................................................................................... 5
2. Unpacking the Balance ...........................................................................................................7
3. Installing the Balance and Precautions................................................................................. 10
3.1. Installing the Balance......................................................................................................... 10
3.2. Precautions Before Use..................................................................................................... 13
3.3. Precautions During Use..................................................................................................... 15
3.4. Precautions After Use ........................................................................................................ 16
3.5. Precautions for Power Supply ........................................................................................... 16
4. Display Symbols and Key Operation .................................................................................... 17
5. Weighing Units ...................................................................................................................... 18
5.1. Units ................................................................................................................................... 18
5.2. Storing Active Units ............................................................................................................21
5.3. Selecting Units and Weighing Modes................................................................................ 22
6. Weighing................................................................................................................................ 24
6.1. Basic Operation (Gram Mode) .......................................................................................... 24
6.2. Smart Range for the BM-22............................................................................................... 26
6.3. Counting Mode (PC).......................................................................................................... 27
6.4. Percent Mode (%).............................................................................................................. 29
6.5. Ionizer (Neutralization Device)........................................................................................... 30
6.6. Monitoring the Clock and Environmental Sensors ............................................................ 32
6.7. Repeatability Test............................................................................................................... 33
Adapting to the Environment
7. Response Adjustment ........................................................................................................... 34
7.1. Automatic Response Adjustment ...................................................................................... 34
7.2. Manual Response Adjustment........................................................................................... 35
8. Calibration ............................................................................................................................. 36
8.1. Calibration Group...............................................................................................................36
8.2. Automatic Self Calibration ................................................................................................. 37
8.3. Calibration Using the Internal Mass................................................................................... 38
8.4. Calibration Test Using the Internal Mass........................................................................... 39
8.5. Calibration Using an External Weight................................................................................ 40
8.6. Calibration Test Using an External Weight ........................................................................ 41
8.7. Correcting the Internal Mass Value ................................................................................... 42
Selecting Functions
9. Function Switch and Initialization.......................................................................................... 43
9.1. Permit or Inhibit.................................................................................................................. 43
9.2. Initializing the Balance ....................................................................................................... 44
10. Function Table ....................................................................................................................... 45
10.1. Setting the Function Table ................................................................................................. 45
10.2. Details of the Function Table ............................................................................................. 47
10.3. Description of the Class "Environment, Display"............................................................... 49
10.4. Description of the Item "Data Output Mode" ..................................................................... 51

2 BM series
10.5. Description of the Item "Data Format"............................................................................... 52
10.6. Data Format Examples...................................................................................................... 55
10.7. Clock and Calendar Function ............................................................................................ 57
11. ID Number and GLP Report.................................................................................................. 58
11.1. Setting the ID Number ....................................................................................................... 58
11.2. GLP Report........................................................................................................................ 59
12. Data Memory......................................................................................................................... 65
12.1. Notes on Using Data Memory ........................................................................................... 65
12.2. Data Memory for Weighing Data ....................................................................................... 65
12.3. Data Memory for Calibration and Calibration Test Data.................................................... 69
13. Underhook............................................................................................................................. 71
14. Density Measurement (Specific gravity) ............................................................................... 72
15. Password Function................................................................................................................ 75
15.1. Balance Software Version 1.50 to 1.64 ............................................................................. 75
15.2. Balance Software Version 1.660 or later ........................................................................... 76
15.3. Using the Password Function............................................................................................ 77
15.4. Entering the Password Before Weighing .......................................................................... 78
15.5. Logging Out ....................................................................................................................... 80
15.6. Storing or Changing the Password.................................................................................... 81
15.7. Changing the Password .................................................................................................... 82
15.8. Deleting the Password (U5ER 0 1～10)............................................................................ 83
15.9. Forgotten Password........................................................................................................... 83
Interface and Communication
16. Standard Input and Output Interface..................................................................................... 84
16.1. RS-232C Interface............................................................................................................. 84
16.2. Connecting to Peripheral Equipment................................................................................. 85
16.3. Commands ........................................................................................................................89
17. Key Lock Function................................................................................................................. 94
17.1. Locking All the Keys........................................................................................................... 94
17.2. Locking the Specified Keys................................................................................................ 95
18. Checking the Balance Software Version............................................................................... 95
Maintenance
19. Maintenance.......................................................................................................................... 96
19.1. Cleaning and Handling the Balance.................................................................................. 96
19.2. Error Codes........................................................................................................................ 96
19.3. Other Display ..................................................................................................................... 98
19.4. Checking the Balance Performance and Environment..................................................... 99
19.5. Asking for Repair ...............................................................................................................99
20. Specifications ...................................................................................................................... 100
20.1. External Dimensions........................................................................................................ 101
20.2. Options and Peripheral Equipment ................................................................................. 102
21. Terms/Index......................................................................................................................... 106
21.1. Terms ............................................................................................................................... 106
21.2. Index ................................................................................................................................ 107

BM series 3
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 .............................. Describes precautions, the balance's construction and basic
operation.
Adapting to the environment........... 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.
Selecting functions.......................... Describes functions of the balance.
Interface and communication.......... Describes the serial interface used for communicating with a
computer that requests weighing data and controls the
balance, and for use with a printer
Maintenance .................................. Describes maintenance, error codes, troubleshooting,
specifications and options.
Balance software version
Some balance operations vary depending on the balance software version. For details on
checking the software version, refer to “18. Checking the Balance Software Version”.

4 BM series
1.1. Features
A built-in ionizer can eliminate static electricity from the weighing sample before weighing,
reducing weighing errors.
Each electrode unit of the ionizer is designed to be removed, cleaned and replaced.
Automatic self calibration, using the internal mass, adapting to changes in temperature.
Response adjustment adapting to drafts and/or vibration in the environment 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) / Good manufacturing practice (GMP) data can be output using
the RS-232C serial interface.
A built-in clock and calendar that can add the time and date to the output data. (Changing the
clock setting can be limited to the administrator. Refer to “15. Password Function”.)
The password function can be used to restrict balance users or changes to the function settings.
The key lock function disables the balance key operation and enables the balance to be operated
only by commands from external devices.
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 at the factory), Tola (India), Messghal and Density mode
The BM-22 is equipped with a smart range function to weigh in the precision range (minimum
display: 1 μg) after zeroing a tare weight, if within the weighing capacity.
The micro tube holder is included in the accessories of the BM-20 and BM-22.
Density mode for calculating the density of a solid.
The BM series balances are equipped with an RS-232C serial interface and a USB interface to
communicate with a computer. While outputting data to a printer using the RS-232C interface,
data can be transmitted to a computer at the same time using the USB interface.
Using the RS-232C interface and the Windows communication tools software (WinCT) enables bi-
directional communication between a Windows computer and the balance.
The current version of the WinCT can be downloaded from the A&D website.
Connecting the USB interface of the balance by a 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.
When the accessory data logger (AD-1688) is connected, weighing data can be stored without
using a computer.

BM series 5
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 Directives of CE mark
This device features radio interference suppression, safety regulation and restriction of Hazardous
Substances in compliance with the following Council Directives
Council directive 2004/108/EC EN61326 EMC directive
Council directive 2006/95/EC EN60950 Safety of Information Technology Equipment
Council directive 2011/65/EU EN50581 Restriction of the use of certain Hazardous Substances
The CE mark is an official mandatory European marking.
Please note that any electronic product must comply with local laws and regulations when sold or
used anywhere outside Europe.

6 BM series

BM series 7
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 included.
Accessories for each model
BM-20, BM-22
BM-252
BM-500, BM-300,
BM-200
Small weighing Large weighing
pan for filter pan for filter
Weighing pan Pan support
Micro tube holder
Small fine range ring
Fine range ring
Tweezers
Dust plate AX-MX-36
15, 0.8 mL 12, 0.3 mL 8, 0.05 mL
Large Medium Small
Round aluminum analytical pans ( 10 pieces each )
Weighing pan Pan support
Fine range ring
Breeze break ring
Dust plate
Weighing pan
Pan support
Breeze break ring
Dust plate
Slide breeze break
A
X
-BM-035

8 BM series
Common accessories
Attach the AC adapter labels to the AC adapter
as shown in the illustration.
AC adapter AC adapter labels
Notes
Please confirm that the AC adapter type is correct for your local
voltage and receptacle type.
Please use the dedicated AC adapter specified for the balance.
Do not use the AC adapter provided with the balance for other
models or equipment with which the AC adapter may not be
compatible.
If you use the wrong AC adapter, the balance and other equipment
may not operate properly.
Data logger
AD-1688
The weighing data can be
stored when connected to
the RS-232C interface of
the balance.
USB cable
(approx. 1.8 m)
Display cover
(PET resin)
Separation plate
If unnecessary, remove it.
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.
Body cover
Cover during storage to prevent dust and dirt contamination.
The cover can be used for the balance with the AC adapter and other cables
connected.
D-sub 9 pins
Positions to
p
lace the AC ada
p
ter labels