A&D HR-202i User Manual

1WMPD4000912B

Analytical Balance

HR-300i HR-202i

© 2008 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.

Contents

Basic Operation

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

1.1. About This Manual .........................................................................................................3

1.2. Features..........................................................................................................................3

1.3. Compliance.....................................................................................................................4

2. Unpaking the Balance.........................................................................................6

2.1. Installing the Balance .....................................................................................................7

3. Precautions.........................................................................................................7

3.1. Before Use......................................................................................................................7

3.2. During Use......................................................................................................................8

3.3. After Use.........................................................................................................................9

3.4. Power Supply .................................................................................................................9

4. Display Symbols and Key Operation.................................................................10

5. Weighing Units..................................................................................................11

5.1. Units..............................................................................................................................11

5.2. Changing the Units...................................................................................................... 12

6. Weighing...........................................................................................................14

6.1. Basic Operation (Gram Mode).................................................................................... 14

6.2. Dual ange .................................................................................................................... 15

6.3. Counting Mode (PCS)................................................................................................. 16

6.4. Percent Mode (%) ....................................................................................................... 18

Adapting To The Environment

7. Response Adjustment.......................................................................................19

8. Calibration .........................................................................................................20

8.1. Calibration Group ........................................................................................................ 20

8.2. Calibration Using an External Weight......................................................................... 21

8.3. Calibration Test Using an External Weight................................................................. 22

Selecting Functions

9. Function Switch and Initialization......................................................................23

9.1. Permit or Inhibit............................................................................................................ 23

9.2. Initializing the Balance................................................................................................. 24

10. Function Table...................................................................................................25

10.1. Setting the Function Table........................................................................................... 28

10.2. Details of the Function Table....................................................................................... 28

10.3. Description of the Class "Environment, Display"........................................................ 30

10.4. Description of the Item "Data Output Mode" .............................................................. 31

10.5. Description of the Item "Data Format"........................................................................ 32

10.6. Data Format Examples............................................................................................... 34

11. ID Number and GLP Report..............................................................................36

11.1. Setting the ID Number................................................................................................. 36

11.2. GLP Report.................................................................................................................. 37

12. Underhook ........................................................................................................40

Interface And Communication

13. Standard Input and Output Interface.................................................................41

13.1. RS-232C Interface....................................................................................................... 41

13.2. Connection to Peripheral Equipment.......................................................................... 42

13.3. Commands.................................................................................................................. 44

Maintenance

14. Maintenance .....................................................................................................50

14.1. Treatment of the Balance............................................................................................ 50

14.2. Error Codes ................................................................................................................. 50

14.3. Checking the Balance Performance and Environment.............................................. 52

14.4. Asking for Repair......................................................................................................... 52

15. Specifications....................................................................................................53

15.1. External Dimensions ................................................................................................... 54

15.2. Options and Peripheral Instruments........................................................................... 55

16. Terms/Index......................................................................................................58

16.1. Terms...........................................................................................................................58

16.2. Index ............................................................................................................................ 59

1. Introduction

This manual describes how the balances of HR-i series 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.

1.1. 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 o peration.

.........

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 t hat requests weighing data and controls the balance, and for use with a prin ter. Describes maintenance, error codes, troubleshooting, spe cifications and options.

1.2. Features

Response adjustment adapting to drafts and/or vibration. The data adapting to GLP, GMP and ISO can be output using the RS-232C serial interface. Underhook, for measuring density and weighing magnetic materials. Multiple weighing units with most of the common units used around the world. Standard RS-232C serial interface to communicate with a computer. Windows communication

tools software (WinCT) to allow easy communication with a computer using Windows.

1.3. Compliance

1.3.1. 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.)

1.3.2. 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 T echnology 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.

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.

Bubble spirit level

Windows communication

software (WinCT)

Breeze break ring

Leveling foot

Weighing chambe

Weighing pan

Pan support

Dust plate

Floor plate

C adapter jac

Position of placing AC adapter labels

Fine range breeze break ring

This ring is an accessory for the HR-202i. Before weighing with a minimum display of

0.01 mg, install this ring in place of the "breeze break ring" to avoid errors caused by drafts.

Fine range breeze break ring

Keys

Displa

Display cove

External key jac

Serial interface (RS-232C, D-sub 9-pin)

Terminal cove

C adapter labels C adapter

Note Please confirm that the AC

adapter type is correct for your local voltage and receptacle type.

Grounding terminal

Leveling foo

2.1. Installing the Balance

Install the balance as follows:

1 Consider section "3. Precautions " for

installing your balance. Place the balance on a solid weighing table.

2 Assemble the "Dust Plate", "Breeze Break

Ring" and "Weighing Pan" on your balance. There is a reference illustration on the previous page.

3 Adjust the level of the balance using the

leveling feet. Ground the balance chassis for discharging static electricity if you have a static problem.

4 Please confirm that the adapter type is

correct for your local voltage and power receptacle type.

Leveling foo

Bubble spirit level

5 Connect the AC adapter to the balance. 6 Calibrate the balance before use. Refer to

"8. Calibration".

Connect the

AC adapter

3. Precautions

3.1. Before Use

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

closely as possible. Please confirm that the AC adapter type is correct for your local voltage and receptacle type. Ensure a stable power source when using the AC adapter. 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. Corners of rooms are best as they are less prone to vibration. Do not install the balance near a heater or air conditioner. Do not install the balance in direct sunlight. Do not use the balance near other equipment which produces magnetic fields. Keep the balance level by using the bubble spirit level. 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.

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

3.2. During Use

Note the following items to get accurate weighing data.

Discharge static electricity from the weighing material.

When a weighing sample (plastics, insulator, etc.)

Charged material

could have a static charge, the weight value is

influenced. Ground the balance, and

Eliminate the static electricity using the optional AD-1683. Try to keep the ambient humidity above 45%RH. Use a metal shield case. Wipe a charged plastic sample 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 the temperature difference between the weighed

sample and the environment. When a sample is warmer (cooler)

than the ambient temperature, the sample will lighter (heavier)

than true mass. This error is due to the rising (falling) draft around

the sample.

Metal case

Grounding

Magnet material

Draft 20°C

40°C

Weighing pan

Make each weighing gently and quickly to avoid errors due to

changes in the environmental conditions.

Before weighing with a minimum display of 0.01 mg for the

HR-202i, the "fine range breeze break ring" can be installed in

place of the "breeze break ring" to avoid errors caused by drafts.

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

beyond the range of the balance on the weighing pan.

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

pen) to press the keys, use your finger only.

Fine range breeze

break ring

Shoc

Press the RE-ZERO key before each weighing to prevent

possible errors. Calibrate the balance periodically so as to eliminate possible

errors. Take into consideration the affect of air buoyancy on a sample

when more accuracy is required. 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, placing and

removing a sample). Use a pair of tweezers to avoid

temperature changes due to heat from inserting your hand into

the weighing chamber.

3.3. After Use

Avoid mechanical shock to your balance. Do not disassemble the balance. Contact the 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.

3.4. Power Supply

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 the AC adapter always be connected.

4. Display Symbols and Key Operation

Display

Processing indicator

Stabilization indicator

Standby indicator

of power supply

Key operation

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

Press and hold the key

Key

The key to turn the display ON and OFF.

When pressed and released When pressed and held

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

OFF. In the weighing mode, the key to turn the minimum weighing value ON and OFF. The key to switch the preset weighing units stored in the function table. Refer to "5. Weighing Units".

No function.

The key to output the stable weighing data. (factory setting)

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

The key to enter the function table mode. Refer to "10. Function Table".

The key to perform response adjustment.

The key to display other items of the calibration menu.

No function. (factory setting) By changing the function table:

Response indicator (Displayed for about 30 seconds when weighing starts.)

Units

Weighing data

or settings

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

"Title block" and "End block" for GLP report are output.

The key to set the display to zero.

5. Weighing Units

5.1. Units

All weighing units and weighing modes are as follows:

A unit or mode can be selected and stored in the function table as described in "5.2. Changing

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

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

Counting mode

g mg pcs % oz ozt ct m t tl GN dwt mom

the Units".

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

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

Percent mode

To select a unit or mode for weighing, press the MODE key. For details about the units and modes, see the table below:

Name (unit, mode) Abbreviation Display unit Gram g

Milligram mg Counting mode pcs Percent mode % Ounce (Avoir) oz Troy Ounce ozt Metric Carat ct Momme mom Pennyweight dwt Grain (UK) GN Tael (HK general, Singapore) Tael (HK jewelry) Tael (Taiwan) Tael (China) Tola (India) t Messghal m

Conversion factor

1 g

0.001 g

28.349523125 g

31.1034768 g

0.2 g

3.75 g

1.55517384 g

0.06479891 g

37.7994 g

37.429 g

37.5 g

31.25 g

11.6638038 g

4.6875 g

5.2. Changing the Units

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

displaying these 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

.......

To display the units sequentially.

....

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

Unit Display

Press and hold

Press

several times

Examples

Gram g Milligram mg Counting mode pcs Percent mode %

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.

Displays the units

sequentially

5.2.1. Unit setting example

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

(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 .

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 pcs

(g→pcs).

Press and hold

Press

several times

Specif

Press

several times

Specif

Store

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 a weighing error. Shorten the operation time as much as possible. ( Opening and closing door, placing and

removing a sample)

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 of the balance.

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)

Read section "4. Display symbols and Key operation" before operation.

Note When turning on the balance with a container placed on the

pan, the tare function sets the display to zero automatically.

1 Turn on the balance using the 2 Select a preset unit (g or mg) using the MODE key.

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

Then zero is displayed.

Container : A vessel placed on the pan, but not to be

included in the weighing data.

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

ON:OFF key.

Container

Weighing pan

Stabilization

indicator Sample

5 Wait for the stab ilization indicator to be displayed,

then read the value.

6 Remove the sample and container from the pan.

Remove the sample

and container

6.2. Dual Range

HR-202i

Weighing range Available minimum display Precision range 0 g to 51 g 0.01 mg 0.1 mg 1 mg Standard range 51 g to 220 g 0.1 mg 1 mg

The HR-202i is equipped with two

ranges, "precision range" and

Precision Range

Turn on the balance

"standard range".

When weighing is started by

pressing the ON:OFF key, the

Minimum display

0.1 mg

minimum display will be 0.1 mg.

Pressing the RANGE key will

Minimum display

0.01 mg

switch these ranges alternately.

Minimum display

1 mg

When a sample is weighed using the

precision range with a minimum display of

0.01 mg and the weight value exceeds the precision range value, the minimum display changes to 0.1 mg of the standard range. When removing the sample, the minimum display changes to 0.01 mg of the precision range automatically.

When a tare weight (container mass value)

exceeds the precision range value, even if the sample is within the precision range value, 0.01 mg of the precision range can not be selected for the minimum display. In order to select 0.01 mg of the precision range, remove the tare weight and press the RE-ZERO key to cancel it.

When a minimum display of 0.1 mg or 1 mg is

selected by the RANGE key, the minimum display is maintained even if the range is changed during weighing.

Standard Range

Turn on the balance

Minimum display

0.1 mg

Minimum display

1 mg

Minimum display

0.01 mg

Minimum display

0.1 mg

Minimum display

0.01 mg

Minimum display

0.01 mg

Minimum display

0.1 mg

Zero display after

placing a container

Minimum display

0.1 mg

Zero display after

removing the container

Minimum display

0.01 mg

6.3. Counting Mode (PCS)

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 Accu racy 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 pcs (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

A greater number of samples will yield more

accurate counting result.

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

Press the RE-ZERO key to cancel the weight (tare). The number specified in step 3 appears.

Example

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 mass. Then the balance displays 25 pcs and is set to count samples with this unit mass. (The sample unit mass is stored in non-volatile memory, and is maintained even if the AC adapter is removed.) 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 ( it displays lo .

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: 25 samples and press the PRINT key. When the unit mass is stored correctly, the balance proceeds to the counting mode.

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

PRINT key to calculate and store the unit

under 0.1 mg

150 - pcs appears, requiring 25 more samples. Add

) and can not be stored as the unit mass,

Weighing pan

Container

25 samples

Place samples

Counting operation

7 Place the samples to be counted on the pan. 16

Counting result

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 proceeds. ACAI: Automatic Counting Accuracy Improvement

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. 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.

Note ACAI will not function on the unit mass entered using the keys, or digital input

mode.

The mark turns on and

off during calculation.

The mark turns off after

the unit mass is improved.

Add a few

more samples.

The mark turns on

at proper range.

From step 7

Repea

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