AND GR Series Instruction Manual
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AND GR Series Instruction Manual

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GR-120
GR-200
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GR-202
1WMPD4000280A

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  • Page 1 GR-120 GR-200 GR-300 GR-202 1WMPD4000280A...
  • Page 2 Th is a hazard alert mark. NOTE This manual and/or the GR series balances may be changed at any time to improve the product without notice. © 2001 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.

  • Page 3: Table Of Contents

    Permission or Prohibition ........................ 22 8.2. Initializing the Balance ........................23 Function Table ............................ 24 9.1. Display and Keys of the Function Table ..................24 9.2. Details of the Function Table ......................25 9.3. Explanation of Item "Environment, Display" ................... 27 9.4.
  • Page 4 Commands to Request Weighing Data ..................53 16.3. Commands to Control the Balance ....................54 16.4. Commands to Request Memory Data .................... 55 16.5. Acknowledge Code and Error Codes ..................... 56 16.6. Control using CTS and RTS ......................56 16.7. Related Settings..........................56 16.8.

  • Page 5: Introduction

    1. Introduction THANK YOU FOR YOUR A&D PURCHASE This manual will tell you in simple language how this balance works and how to get the most out of it in terms of performance. Features 1.1. Built-in Calibration Weight (internal weight), used to calibrate and verify the calibration of your balance.

  • Page 6: Caution

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

  • Page 7: Cautions During Use (To Get Best Performance)

    (and the Convection container). For example, when the room temperature is 20°C, convection occurs around a Petri dish or watch glass that is 40°C and °C °C the balance displays a value lighter than the actual weight. Before weighing the sample and the container, try to acclimatize them to the ambient temperature.

  • Page 8: Take Care Of Your Balance

    When the AC adapter is connected, the balance is in the standby mode if the standby indicator is on (see "3.2. Display Symbols and Key Operation "). This is a normal state and does not harm the balance. We recommend that you plug in your balance for at least an hour before use so it can...

  • Page 9: Unpacking Your Balance

    3. Unpacking Your Balance Unpack the balance carefully and keep the packing material if you want to transport the balance again in the future. In the carton you should find this manual plus: Weighing Breeze Break Ring Weighing Chamber Dust Plate...

  • Page 10: Installing Your Balance

    Consider the section "2. Caution" for installing your balance. Step 2 Assemble the "Dust Plate", "Breeze Break Ring / Fine Range Breeze Break Ring" and "Weighing Pan" on your balance. There is a reference illustration on the previous page. Step 3 Adjust the level of the balance using the leveling feet.

  • Page 11: Weighing Units

    4. Weighing Units The most common unit of weight used around the world is grams, but there is often a need to shift to an alternative unit specific to the country where the balance is used or to select modes such as counting or percent.

  • Page 12: Weighing

    Press the RE-ZERO key to prevent possible error before placing material on the pan (weighing material) each time. Shorten the operation time as much as possible. (Opening and closing door, placing and removing material) Temperature changes during measurement may cause weighing error.

  • Page 13: Counting Mode (Pcs)

    Step 9 The balance re-calculates the unit weight while the ACAI indicator is blinking. Wait and do not touch the items on the pan until the ACAI indicator turns off automatically. Step10 You are now able to count items with a more accurate unit weight.

  • Page 14: Response Adjustment

    This function stabilizes the weight value, reducing the influence on weighing that is caused by drafts and/or vibration at the place where the balance is installed. This function adjusts by automatically analyzing the environment or by hand-operation. The function has three stages as follows:...

  • Page 15: Manual Response Adjustment

    The balance automatically returns to the weighing mode after Wait a few seconds of inactivity. 7. Calibration The GR series has the following modes concerning calibration and calibration test. Automatic Self Calibration Calibration using the internal weight Calibration using an external weight...
  • Page 16 The data for GLP (Good Laboratory Practice) can be output using the RS-232C interface, when the "GLP output ( info )" of "Data output ( dout )" is set to " " or " ". Refer to section "9. Function Table".

  • Page 17: Automatic Self Calibration

    Advice You can use the balance while the indicator blinks. But, it is recommended that to maintain the best accuracy, stop using the balance and confirm that there is nothing on the pan when the indicator starts blinking. Caution Do not place anything on the weighing pan during automatic calibration.

  • Page 18: Calibration Test Using The Internal Weight

    7.3. This function tests the balance accuracy using the internal weight. Operation Step 1 Connect the AC adapter and warm up the balance for at least one hour with nothing on the pan. Press and hold Step 2 Press and hold the CAL until displaying...

  • Page 19: Calibration Using An External Weight

    "the calibration weight". The weight which you have is called "the external weight". Operation Step 1 Connect the AC adapter and warm up the balance for at least one hour with nothing on the pan. Step 2 Press and hold the CAL key until displaying Calout and then...

  • Page 20: Calibration Test Using An External Weight

    3. Even if the AC adapter is removed, the data is maintained in non-volatile memory. ex. target weight CAL key .... The key to cancel this change and return to step 3. value = 200.0017g Product Usable weight...

  • Page 21: Correcting The Internal Weight Value

    Correct the internal weight value using the following keys. RE-ZERO key ..The value is selected. (+1.5 mg – -1.5 mg) PRINT key ....The new value is stored and id. is displayed CAL key ....This correction is canceled and is displayed.

  • Page 22: Function Switch And Initialization

    Step 1 Turn off the display using the ON:OFF key. Step 2 Press the ON:OFF key while the RANGE key and PRINT key are pressed and held. Then the balance displays Step 3 Press the PRINT key. Then the balance displays the switch settings.

  • Page 23: Initializing The Balance

    Step 2 Press the ON:OFF key while the RANGE key and PRINT Press and hold Press key are pressed and held. Then the balance display p5 . Step 3 Press the RANGE key to display Clr . Step 4 Press the PRINT key. (If you want to cancel this operation,...

  • Page 24: Function Table

    These parameters are stored until the next change, even if the AC adapter is removed. The function table menu consists of two layers. The first layer is the "Class" and second layer is the "Item". Each Item stores a parameter. The effective parameter is the last parameter that is displayed in the sequence.

  • Page 25: Details Of The Function Table

    Key mode PRINT key and stability indicator. Auto-print mode A (Standard Data is output or stored when value is zero) the display value is stable and Auto-print mode B (Standard meets the conditions of ap-p, Data output ap-b and standard value.
  • Page 26 Refer to section "10. ID Number and GLP Report " ID number Factory setting. Caution When the baud rate is set to 2400bps or less, the output rate is slower than the display update rate and the balance may not transmit the data completely (and transmits it intermittently).

  • Page 27: Explanation Of Item "Environment, Display

    This parameter ignores slight fluctuation of a weight value. Use to prevent the weight value from drifting. Zero tracking ( This function traces zero point drift and keeps a zero display automatically, when the weighing value drifts due to changes in the environment. trc 0 The tracking function is not being used.

  • Page 28: Explanation Of Item "Data Output Mode

    The PRINT key can be used at any time for transmitting data. Key Mode When you press the PRINT key and the display value is stable, the balance outputs the weighing data and the display blinks one time. Required setting dout...

  • Page 29: Explanation Of Item "Data Format

    Unstable header KF format 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.
  • Page 30 MT format type 3 This format has a two character header. The polarity sign is used only for negative data. The weight data uses spaces in place of the leading zeros. The character length of this format changes dependent upon the unit. C R L F 0 .

  • Page 31: Examples Of Data Format

    Examples of Data Format 9.6. Stable S T , C R L F A&D + 0 0 0 C R L F C R L F C R L F C R L F + 0 0 0 Unstable A&D C R L F U S , C R L F...
  • Page 32 Units Symbol A&D D.P. Gram mode Milligram mode Counting mode Percent mode Ounce (Avoir) Troy Ounce Metric Carat Momme Pennyweight Grain Tael (HK general, Sing.) Tael (HK, jewelry) Tael (China) Tael (Taiwan) Tola (India) Messghal Density Space, ASCII 20h...

  • Page 33: Id Number And Glp Report

    The ID number is used to identify the balance when Good Laboratory Practice (GLP) is used. The ID number is output on the "Calibration Report", "Calibration Test Report" and "Title block". The GLP output format is selected at the "GLP output (info)" of the "Function Table".

  • Page 34: Glp Output

    Press the CAL key to display Cal in . The balance calibrates automatically. Step 2 If the calibration report is output, glp is displayed and the GLP data is output. Step 3 The balance returns to the normal weighing mode automatically.
  • Page 35 Step 4 The internal weight is measured and this value is displayed. Step 5 If the calibration test report is output, glp is displayed and the GLP data is output. Step 6 The balance returns to the weighing mode automatically.
  • Page 36 Step 4 Press the PRINT key. The zero point is measured and this value is displayed. Step 5 Place the calibration weight on the pan and press the PRINT key. The weight is measured and this value is displayed. Step 6 Remove the weight after end is displayed.
  • Page 37 Step 4 Press the PRINT key. The zero point is measured and this value is displayed. Step 5 Place the calibration weight on the pan and press the PRINT key. The weight is measured and this value is displayed. Step 6 Remove the weight after end is displayed.
  • Page 38 When a weight value is recorded as the GLP data, the GLP report can put the weighing value between "Title block" and "End block". Caution If data memory function is used, the "Title block" and "End block" cannot be output. Use MODE 3 of the AD-8121. Key operation...

  • Page 39: Data Memory Function

    There are four types of operating modes to store the data. Key Mode When you press the PRINT key and the display value is stable, the balance stores the weighing data. Auto-Print Mode A When the display value is stable and meets the conditions of "Auto-print...

  • Page 40: Preparation Of The Function Table

    Press the CAL key. The balance returns to weighing mode. Transmitting All data at One Time Step 1 Setup the RS-232C interface using " 5if " of the function table. Refer to “9. Function Table” and “15. Introduction”. Step 2 Press and hold the PRINT key until displaying reCall and release the key.

  • Page 41: Deleting All Data At One Time

    The Data Number When the "Data number output (d-no) “ is set to “1 ” and the data that is stored in the balance memory is to be output, the "Data number" can be appended just before each data. This format consists of six characters (excluding the terminator).

  • Page 42: Specific Gravity (Density) Measurement

    When the processing indicator (upper left ) flashes with the unit “g” displayed, it indicates that the specific gravity measuring mode is selected. In the specific gravity measuring mode, press and hold the MODE key to enter the mode to set the liquid density. Note In the normal weighing mode, the same procedure will activate the automatic response adjustment.
  • Page 43 RE-ZERO key ..... Decreases the temperature by one degree. (0-99°C) MODE key ..... Saves the change, displays end and returns to the specific gravity measuring mode. PRINT key ....Ruturns to the specific gravity measuring mode without saving the change.
  • Page 44 (6) Measuring the density In the density measurement, the balance displays the weight of the sample in air, the weight in liquid and then the density. Measuring the weight of the sample in air. The processing indicator flashes with the unit “g” displayed.
  • Page 45 “DS”. To measure the density of another sample, press the RANGE key to Press return to the mode to measure the weight in air and repeat the procedure described above. Displaying the density: Note: If the liquid temperature or the type of liquid is changed No “g”...

  • Page 46: Input And Output Interface

    14. Input and Output Interface RS-232C Interface 14.1. Transmission system: EIA RS-232C Transmission form: Asynchronous, bi-directional, half duplex Data format: Baud rate: 600, 1200, 2400, 4800, 9600 bps Data: 7 or 8 bits Parity: Even, Odd (7 bits), None (8 bits)

  • Page 47: External Contact Input

    External contact input When pin 1 and pin 3 or pin 1 and pin 2 are shorted 100 ms or longer, the switch can operate the balance in the same way as the balance PRINT key or the RE-ZERO key, respectively.

  • Page 48: Connection To Equipment

    15. Connection to Equipment Connection to AD-8127 Printer 15.1. When connecting an AD-8127 printer to the balance for printing weighing data, configure the printer and the balance as follows. Printer AD-8127 Example of use Printing mode settings For printing the weighing data of the balance using the balance's EXT.KEY...
  • Page 49 Data format CTS, RTS control Set when the data output mode is auto print mode (prt 1 or prt 2). Note For print samples, "10. ID Number and GLP Report". AD-8121B settings AD-8121B Mode Description DIP switch Prints when data is received...

  • Page 50: Connection To Computer

    Can be used with most application software. Can receive the balance GLP report. ”RsWeight” Can retrieve the weight data from the balance and display the data as a graph in real time. Can calculate and display the maximum, minimum, average, standard deviation and coefficient of variation.
  • Page 51 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"...

  • Page 52: Commands

    16. Commands Command List 16.1. Commands to request weighing data Cancel command for the SIR command. Query command for weighing data. Request command for stable weighing data. Query command for weighing data. Request command for continuous weighing data. Commands to control the balance Calibration command.

  • Page 53: Commands To Request Weighing Data

    The balance sends the data in stream mode. Command Reply Caution When the baud rate is set to 2400bps or less, the display update rate is faster than the output rate and the balance may not transmit the data completely (and transmits it intermittently).

  • Page 54: Commands To Control The Balance

    Commands to Control the Balance 16.3. Calibration command Balance performs calibration using the internal weight. Command Reply (Balance is calibrated) Command to delete all stored data. Command Reply (<AK> code is replied) MD:nnn Command to delete data of data number nnn. Command Reply (<AK>...

  • Page 55: Commands To Request Memory Data

    Calibration test command The balance performs the calibration test using the internal weight. Command Reply (Calibration test is performed) Same as the MODE key, Unit command. The unit can be changed. The command works as the MODE key. Command Reply (Unit is changed) Commands to Request Memory Data 16.4.

  • Page 56: Acknowledge Code And Error Codes

    (EC, Exx). When the balance is able to process a command requesting data, 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 <AK>...

  • Page 57: Command Examples

    Command Examples 16.8. This example is set to “ erCd 1 “of “ 5if“ so as to output the <AK> code. ON command (to turn on the display) Computer Balance Time Standby display ON command Confirmation of command receipt All segments All segments Command completion Zero display...
  • Page 58 CAL command (to calibrate the balance) Balance Computer Time Weighing mode CAL command Confirmation of command receipt Message of “start” Ready Measurement of zero point Ready Measurement of internal mass Message of “end” Process of zero display Command completion Weighing mode...
  • Page 59 Error code and command cancellation Example: When the R command is received, but the balance cannot process it and an error code is output. This example is set to “ erCd 1 “of “ 5if“ . Balance Computer Time Weighing mode...

  • Page 60: Maintenance

    (To get best performance)" and be well informed on how to use the balance. Internal weight error This is a calibration error. EC,E16 Confirm that there is nothing on the pan and retry the calibration or calibration test. Internal weight error This is a calibration error. EC,E17...

  • Page 61: Other Display

    Increase the unit weight or 100% weight. Unit weight information This is advice regarding the sample number that is needed to set the unit weight. When the unit weight is computed and the sample number is too few, the required number is displayed for counting accuracy.

  • Page 62: Specifications

    Power consumption Approx. 30VA (supplied to AC adapter) Current consumption DC12V, approx 0.3A (excluding the AC adapter and options) Please confirm that the AC adapter is correct for your receptacle type and AC adapter, Power supply voltage [factory preset]. Net weight...

  • Page 63: External Dimensions

    External Dimensions 18.1. Opening: 101) (Inside: 178) Unit: mm...

  • Page 64: Optional Accessories

    Enables bi-directional communication between the personal computer and the balance when a USB driver is installed. AD-1671: Anti-vibration table With a weight of approx. 27 kg and shock-absorbing rubber, it reduces vibrations from the floor and is effective for stable weighing display on the balance. AD-1672: Tabletop breeze break Protects the balance from wind from sources such as air conditioning or people passing by, thereby reducing balance weighing errors.
  • Page 65 The built-in IR Sensor enables removal of static electricity in a touchless way. AD-1684A: Electrostatic field meter 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 an ionizer such as AD-1683A.
  • Page 66 A&D Company, Limited 3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-1566 A&D ENGINEERING, INC. 47747 Warm Springs Blvd, Fremont, California 94539, U.S.A. Tel: [1] (800) 726-3364 Weighing Support:[1] (888) 726-5931 Inspection Support:[1] (855) 332-8815 A&D INSTRUMENTS LIMITED Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire OX14 1DY United Kingdom Telephone: [44] (1235) 550420...

This manual is also suitable for:

Gr-120Gr-200Gr-300Gr-202

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