Analytical Balance BM-20 BM-22 BM-252 BM-200 BM-300 BM-500 1WMPD4002195A
© 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.
Contents Basic Operation 1. Introduction.............................................................................................................................. 3 1.1. Features............................................................................................................................... 4 1.2. Compliance.......................................................................................................................... 5 2. Unpacking The Balance..................................
10.4. 10.5. 10.6. 10.7. Description Of The Item "Data Output Mode" ................................................................... 45 Description Of The Item "Data Format"............................................................................. 46 Data Format Examples...................................................................................................... 49 Clock And Calendar Function............................................................................................ 51 11.
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 ...........
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.
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.
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.
LED of the static eliminator Glass door handle The DC Static eliminator Neutralization area Electrode units of the DC static eliminator Example of BM-20 Separation plate If unnecessary, remove it. Weighing chamber Leveling foot Joint 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. Display Keys Display cover Bubble spirit level Glass door handle The handle for the glass door.
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.
Step 3 If the separation plate is not necessary, remove the screw and take it off. Refer to next page "The Separation Plate". Separation plate Screw 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. Hook 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.
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 1 Screw Hook 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 3 Step 1 Step 2 Step 4 Remove the plate from the chamber. Attaching the Separation Plate Use the arrows in reverse to attach the plate.
3.3. Cautions During Use (For Precision Weighing) Note the following items to get accurate weighing data. Charged material 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.
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.
4. Display Symbols And Key Operation Display The amount of stored data with data memory function Humidity (%) Response indicator for approx. 30 seconds when weighing starts.
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.
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 BM-500 BM-300 BM-200 Capacity Minimum display Gram 520 320 220 Milligram 520000 320000 220000 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.
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 Precision range Capacity Minimum display 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.
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 .
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". The unit sequence of the factory settings. Turning on the display. Pressing the MODE key in the weighing mode, the unit and weighing mode can be displayed in order. BM-20 BM-22 BM-252 BM-500 BM-300 BM-200 BM-22 and BM-20 are preset units in the factory. (Milligram), (Gram) is displayed in order.
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 . Press and hold Press several times 3 Press the PRINT key to enter the unit selection mode. 4 Press the RE-ZERO key to specify the unit of g.
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. (Opening and closing door, putting and removing sample) Use a pair of tweezers to avoid a temperature change due to having your hand in the weighing chamber.
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.
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.
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.
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. 3 Place a tare (container) on the weighing pan, if necessary.
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.
Remote Control Of The DC Static Eliminator 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.
6.6. Monitoring Clock and Environmental Sensors 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 Temperature Humidity Air pressure Resolution Measurement range ±1.5 °C 5 °C to 40 °C ±10 % 0 % to 100 % ±10 hPa 300 hPa to 1100 hPa Applicable range 5 °C to 40 °C Caution The environmental sensors are built into the case.
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.
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 : Response indicator Indicator Parameter Response Stability FAST Cond 0 Fast response, Sensitive value MID.
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.
8. Calibration (To Adjust The Weighing Value) 8.1.
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.
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. Press and hold Release 3 The balance measures the zero point. Prevent vibration and drafts to affect the balance.
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 displayed, then release the key. Calout Press and hold is New mass value 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.
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.
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 memory even if the AC adapter is removed. The internal mass value is corrected as follows: Model The same mass 200g Correct the internal mass by +0.6mg at 200g. 200.0000 g 200.0006 g Calibrate with this internal mass.
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.
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.
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 " " shows effective parameter. When pressing and holding the key in the weighing mode, the balance enters the function table mode.
Setting Example This example sets "Stores weighing data" for "Data memory" and "1 minute" for "Interval time".
10.2. Details Of The Function Table Class Item and Parameter Description 0 Fast response, sensitive value FAST Cond Can be changed by 1 MID. response adjustment. Condition 2 Slow response, stable value SLOW 0 Stable range is ±1 digit The stabilization indicator 5t-b 1 ±2 digit #1 illuminates when the display Stability band width fluctuation is within the range. 2 Stable range is ±3 digits off OFF ploc Display hold function to measure the volume dispensed from the pipette.
Class Item and Parameter 0 1 2 3 int 4 Interval time 5 6 7 8 off d-no Data number output on 0 1 5-td Time/Date output 2 dout Data output 3 off 5-id ID number output on off pU5e Data output pause on off at-f Auto feed on 0 info 1 GLP output 2 off ar-d Zero after output on off 5-tp Temperature output on 0 1 2 bp5 Baud rate 3 4 5 0 btpr 1 5if Data bit, parity bit 2 Serial interface 0 Crlf Terminator 1 0 1 2 type Data format 3 4 5 Caution Description Every measurement 2 seconds 5 seconds 10 seconds 30 seconds
Class 5if Serial interface d5 fnc Density function Unit Unit Item and Parameter off t-Up Timeout on off erCd AK, Error code on ldin Liquid density input Description Selects the wait time to receive a command. No limit 1 second No output Output AK: ASCII code 06h 0 Water temperature 1 Liquid density Available only when density mode is selected Refer to "5. Weighing Units". C5 in Internal mass correction Displayed only when the internal mass value correction switch is set to 1. Refer to "8.
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.
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.
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.
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.
Date dout 5-td 2 or 3 Time dout 5-td 1 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. 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.
10.6.
Units A&D D.P.
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. Press several times 2 Press the RANGE key several times to display Cl adj .
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.
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".
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.
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 ........The key to select the blinking figure RE-ZERO (+)key...The key to increase the value of the blinking figure. MODE (-)key .......
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 .......... The key to select the blinking figure RE-ZERO (+)key ....
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.
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 Excluding date and time Up to 200 sets Including date and time Up to 100 sets Calibration report Internal calibration External calibration Calibration test report Internal test calibration External test calibration Last 50 sets 12.1.
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.
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.
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 .....To proceed to the next data set. MODE key .........To go back to the previous data set. PRINT key..........
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.
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.
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".
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.
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.
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.
15.2. Connection To Peripheral Equipment Connection to an AD-8121B printer Preset the following parameters to use the AD-8121B printer.
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).
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.
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 Same as the 1CAL1 key. CAL Turns the display off. OFF Turns the display on.
15.3.2. Acknowledge Code And Error Codes When the "Serial interface function (5if)" parameter is set to "erCd on", the balance outputs code or error code to each command as follows: (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.
15.3.4. Command Examples This example uses the "erCd on" of "5if" so that the (06h) code is output.
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) 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.
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 (06h) code is output.
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.
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.
Display Error code Description Not ready A received command can not be processed. Example: EC,E02 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 EC,E03 the next character of a command within the time limit of one second. Confirm the communication.
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.
17. Specifications BM-22 BM-252 BM-500 BM-300 BM-200 22 g Weighing capacity 22 g 250 g 520 g 320 g 220 g 5.1 g 22.00008 g Maximum display 22.000084 g 250.00084 g 520.0084 g 320.0084 g 220.0084 g ∗1 5.100009 g 0.01 mg Minimum display 0.001 mg 0.01 mg 0.1 mg 0.001 mg 0.01 mg Repeatability 0.0025 mg 0.2 mg 0.1 mg ∗3 0.03 mg (Standard deviation) ∗2 ∗2 0.004 mg ±0.02 mg Linearity ±0.010 mg ±0.10 mg ±0.5 mg ±0.3 mg ±0.2 mg ±0.010 mg Approx. 8 seconds Stabilization time Approx. 3.
17.1.
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.
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 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 100 pieces AX-ROUND-PAN-S 0.05 AD-1653 Density Determination Kit Cautions The BM-20 and BM-22 can not use this kit.
AX-USB-9P-EX USB Converter 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 converter The RS-232C cable provided (D-sub 9-pin) AX-T-314A-S External key Plug This plug produces the same operations as pressing the RE-ZERO and PRINT keys.
Other Options Order code Name and description AD-1670 Anti-vibration table Approximately 24kg, Artificial stone (Terrazzo). 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 Rechargeable Battery This option allows use of the balance in a place where AC power is not available.
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.
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, 8922 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 ..........
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 -dWeighing data...................................
Neutralization......................................................... 25, 43 Operating environment ............................................... 80 out Report output .................................... 61, 62 out go Report output, Start........................... 61, 62 out no Report output, cancel ....................... 61, 62 Pan support ............................................................... 6, 8 Parity ........................................................... 42, 67 Percent mode.........
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.......
MEMO BM series 91
MEMO 92 BM series
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013 JAPAN Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-6148 A&D ENGINEERING, INC. 1756 Automation Parkway, San Jose, California 95131 U.S.A.
