GP SERIES GP-12K/GP-20K /GP-30K/GP-32K GP-40K/GP-60K/GP-61K GP-100K/GP-102K GP-30KS/GP-32KS GP-60KS/ GP-61KS/GP-100KS Precision Balance INSTRUCTION MANUAL WM+PD4000273D
© 2006 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.
CONTENTS Basic operation 1. INTRODUCTION ............................................................................................................................ 3 1-1 About This Manual ..............................................................................................................................3 1-2 Features ..............................................................................................................................................3 1-3 Compliance ......................
9-8 Data Format Examples .....................................................................................................................46 9-9 Clock and Calendar Function............................................................................................................48 9-10 Comparator Function ......................................................................................................................50 9-11 Adding the Comparison Results ............................................
1. INTRODUCTION This manual describes how the GP series balance works and how to get the most out of it 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 .............................. Describes precautions on handling the balance, balance construction and basic balance operation. Adapting to the environment ..........
Hold Function, provided for weighing a moving object such as an animal. Multiple Weighing Units, with most of the common units used around the world. Density Mode, for calculating the density of a solid. Accumulation Function, adding the weight values and outputting the sum. Adjustable Display Position, the standard type balance has a swing-arm to adjust the display position for optimum viewing. Separate display type balances (GP-30KS/32KS/60KS/61KS/100KS) are also available.
1-3 Compliance 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.
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2. UNPACKING THE BALANCE 2-1 Unpacking The balance is a precision instrument. Unpack the balance carefully. Keep the packing material to be used for transporting the balance in the future. The packing contents depend on the balance model. See the illustrations to confirm that everything is contained. Standard type: GP-12K/20K/30K/32K/40K/60K/61K/100K/102K Note Please confirm that the AC adapter type is correct for your local voltage and receptacle type.
Separate display type: GP-30KS/32KS/60KS/61KS/100KS Note Please confirm that the AC adapter type is correct for your local voltage and receptacle type. 2-2 Installing the Balance Install the balance as follows: 1. Refer to “3. PRECAUTIONS” for installing the balance. 2. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level. 3. Confirm that the adapter type is correct for the local voltage and power receptacle type. 4. Connect the AC adapter to the balance.
3. PRECAUTIONS To get the optimum performance from the balance and acquire accurate weighing data, note the following: 3-1 Before Use Install the balance in an environment where the temperature and humidity are not excessive. The best operating temperature is about 20°C / 68°F at about 50% relative humidity. Install the balance where it is not exposed to direct sunlight and it is not affected by heaters or air conditioners. Install the balance where it is free of dust.
This balance uses a strong magnet as part of the balance assembly, so please use caution when weighing magnetic materials such as iron. 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. Cancel the temperature difference between a sample and the environment. When a sample is warmer (cooler) than the ambient temperature, the sample will be lighter (heavier) than the true weight.
3-5 Display Symbols and Key Operation Key operation Key operation affects how the balance functions. The basic key operations are: “Press and release the key immediately” or “Press the key” = normal key operation during measurement “Press and hold the key” Display symbols Each key, when pressed or when pressed and held, functions as follows: Key When pressed When pressed and held Turns the display ON and OFF. The standby indicator is displayed when the display is turned off.
3-6 Smart Range Function The GP-32K, GP-32KS and GP-102K are equipped with two ranges. The precision range has a higher resolution. The standard range has normal resolution. The range is switched automatically, depending on the value displayed. Pressing the RE-ZERO key allows weighing in the precision range, regardless of the tare value. (Smart range function) The range can be fixed to the standard range, by pressing the SAMPLE key.
4. WEIGHING UNITS 4-1 Units With the GP series balance, the following weighing units and weighing modes are available : A unit or mode can be selected and stored in the function table as described in “4-2 Changing the Units”. If a weighing mode (or unit of weight) has been turned off, that mode or unit will be missing in the sequence. Tael has four varieties, one of which can be selected and installed at the factory.
The tables below indicate the weighing capacity and the minimum display for each unit, depending on the balance model. Unit GP-12K GP-20K GP-30K GP-30KS GP-61K GP-61KS GP-40K Minimum display Capacity Minimum display Capacity Gram 12000.0 21000.0 31000.0 61000.0 0.1 41000.0 0.5 Kilogram 12.0000 21.0000 31.0000 61.0000 0.0001 41.0000 0.0005 Ounce (Avoir) 423.290 740.755 1093.495 2151.710 0.005 1446.24 0.02 Pound 26.4555 46.2970 68.3435 134.4820 0.0005 90.390 0.
Unit GP-32K/ GP-32KS Standard range Capacity Precision range Minimum display Capacity Minimum display Gram 31000 1 6100.0 0.1 Kilogram 31.000 0.001 6.1000 0.0001 1093.50 0.05 215.170 0.005 68.345 0.005 13.4480 0.0005 68L 5.5 0.1 13L 7.17 0.01 Troy Ounce 996.65 0.05 196.120 0.005 Metric Carat 155000 5 30500.0 0.5 Mom me 8266.5 0.5 1626.65 0.05 Pennyweight 19933 1 3922.4 0.1 Tael (HK general, Singapore) 820.10 0.05 161.380 0.005 Tael (HK jewelry) 828.
4-2 Changing the Units The units or modes can be selected and stored in the function table. The sequence of displaying the units or modes can be arranged so as to fit the frequency of use in the function table. Select a unit or mode and arrange the sequence of display as follows: 1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed, then release the key. 2 Press the SAMPLE key several times to display Unit . 3 Press the PRINT key to enter the unit selection mode.
5. WEIGHING 5-1 Basic Operation (Kilogram Mode) 1 Place a container on the weighing pan, if necessary. Press the RE-ZERO key to cancel the weight (tare). The balance displays 0.0000 kg. (The decimal point position depends on the balance model.) 2 Place a sample on the pan or in the container. 3 Wait for the stabilization indicator to be displayed. Read the value. 4 Remove the sample and container from the pan. Notes To use another unit, press the MODE key and select an appropriate unit.
5-2 Counting Mode (PCS) This is the mode to determine the number of objects in a sample based on the standard sample unit mass. Unit mass means the mass of one sample. The smaller the variables in each sample unit mass is, the more accurate the counting will be. The GP series balance is equipped with the Automatic Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.
Counting operation 7 Place the samples to be counted on the pan. Note Up to 50 unit masses can be stored in memory for the multiple sample. For details, refer to “11. DATA MEMORY”. 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. 8 If a few more samples are added, the processing indicator turns on. To prevent an error, add three or more.
5-3 Percent Mode (%) This is the mode to display the weight value in percentage compared to a 100% reference mass and is used for target weighing or checking the sample variable. Selecting the percent mode 1 Press the MODE key to select % (percent mode). If the percent mode can not be selected, refer to “4. WEIGHING UNITS”. Storing the 100% reference mass 2 Press the SAMPLE key to enter the 100% reference mass storing mode. Even in the storing mode, pressing the MODE key will switch to the next mode.
5-5 Accumulation Function The accumulation function adds the weighing data and displays the total value. To use the accumulation function, set the “Accumulation function (add)” parameter of the function table as described below. Note While the accumulation function is in use, the data memory function is not available. When using the accumulation function, make sure that the “Data memory (data)” parameter of the function table is set to “0”.
Using the accumulation function Use the keys below to operate the accumulation function. MODE key: Displays the weighing data and the total value alternately each time it is pressed. Will not change the unit while the accumulation function is in use. RE-ZERO key: Sets the display to zero while the weighing data is displayed. Deletes the total value while the total value is displayed. PRINT key Outputs and adds the weighing data while the weighing data is displayed.
6. RESPONSE ADJUSTMENT / SELF CHECK FUNCTION This function detects the influence on weighing that is caused by drafts and/or vibration at the place where the balance is installed and sets the response characteristic automatically. When this function is selected, the balance self-checks the performance at the same time. Two modes of response adjustment are available: automatic and manual. The function has three rates as follows: Changing the response rate changes the display refresh rate.
Notes If improper performance is found in the self check, the balance displays local A&D dealer for repair. CH no. Contact the If the automatic response adjustment fails, the balance displays CH ng. Check the ambient conditions such as breeze and vibration, also check the weigning pan. Then, perform the adjustment again. To return to the weighing mode, press the CAL key. If the automatic response adjustment is awkward, try to refine it using the manual response adjustment.
7. CALIBRATION 7-1 Calibration Group The GP series balance has the following modes as a calibration group. Calibration Automatic self calibration (calibration due to changes in temperature) Calibration using the internal mass (one-touch calibration) Calibration using an external weight Calibration test Calibration test using an external weight (Calibration test does not perform calibration.
Display This indicator means “the balance is measuring calibration data”. Do not allow vibration or drafts to affect the balance while this indicator is displayed. 7-2 Automatic Self Calibration (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.
7-3 Calibration Using the Internal mass (One-Touch Calibration) This function calibrates the balance using the internal mass. The only operation required is to press the CAL key. Operation 1 Plug in the AC adapter and warm up the balance for at least 30 minutes with nothing on the weighing pan. 2 Press the CAL key. 3 The balance displays Calin and performs calibration using the internal mass. Do not allow vibration or drafts to affect the balance 4 The balance displays end after calibration.
7-4 Calibration Using an External Weight This function calibrates the balance using an external weight. Operation 1 Plug in the AC adapter and warm up the balance for at least 30 minutes with nothing on the pan. 2 Press and hold the CAL key until displayed, then release the key. 3 The balance displays Cal Calout is 0. If you want to change the calibration weight (a list of usable weights is shown on page 25), press the SAMPLE key and proceed to step 4.
5 Confirm that there is nothing on the pan and press the PRINT key. The balance measures the zero point. Do not allow vibration or drafts to affect the balance. The balance displays the calibration weight value. 6 Place the displayed calibration weight on the pan and press the PRINT key. The balance measures the calibration weight. Do not allow vibration or drafts to affect the balance. 7 The balance displays from the pan. end .
7-5 Calibration Test Using an External Weight This function tests the balance weighing accuracy using an external mass and outputs the result. This is available only when the “GLP output (info)” parameter is set to “1” or “2”. (Calibration test does not perform calibration.) Operation 1 Connect the AC adapter and warm up the balance for at least 30 minutes with nothing on the pan. 2 Press and hold the CAL key until displayed, then release the key. CCout is 3 The balance displays CC 0 .
5 Confirm that there is nothing on the pan and press the PRINT key. The balance measures the zero point and displays the measured value. Do not allow vibration or drafts to affect the balance. The balance displays the target weight value. 6 Place the displayed target weight on the pan and press the PRINT key. The balance measures the target weight and displays the measured value. Do not allow vibration or drafts to affect the balance. 7 The balance displays pan. end .
7-6 Correcting the Internal Mass Value The GP series 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.
Operation 1 Calibrate the balance using the internal mass. (one-touch calibration) Then, place an external weight and confirm the value to be corrected. In the example, the value is to be corrected by 0.6 gram in 20 kilograms. 2 Press the ON:OFF key to turn off the display. 3 While pressing and holding the PRINT key and the SAMPLE key, press the ON:OFF key. The balance displays p5 . 4 Press the PRINT key. Then the balance displays the function switches.
8. FUNCTION SWITCH AND INITIALIZATION 8-1 Permit or Inhibit The balance stores parameters that must not be changed unintentionally (e.g. Calibration data for accurate weighing, Data for adapting to the operating environment, Control data for the RS-232C interface). There are five switches for the purpose of protecting these parameters. Each switch can select either “permit” or “inhibit”. The “inhibit” protects parameters against unintentional operations.
8-2 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 weight value Function switch settings Liquid density and temperature in the density mode Note Be sure to calibrate the balance after initialization.
9. 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. 9-1 Structure and Sequence of the Function Table The function table menu consists of two layers. The first layer is the “Class” and the second layer is the “Item”. Each item stores a parameter. Example This example sets “Stores weighing data” for “Data memory” and “1 minute” for “Interval time”.
9-3 Details of the Function Table P 37
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Caution The balance may not transmit the data completely at the specified refresh rate, depending on the baud rate or data added to the weighing data such as time, date and ID number.
9-4 Description of the Class “Environment, Display” Condition ( Cond ) Cond 0 Cond 2 This parameter is for sensitive response to the fluctuation of a weight value. Used for powder target weighing, weighing a very light sample or when quick response weighing is required. After setting, the balance displays FAST. This parameter is for stable weighing with slow response. Used to prevent a weight value from drifting due to vibration or drafts. After setting, the balance displays SLOW.
Zero tracking ( trc ) This function tracks zero point drift caused by changes in the environment and stabilizes the zero point. When the weighing data is only a few digits, turn the function off for accurate weighing. Note Digit, when used for the GP series balance, indicates the smallest displayable weighing value. trc trc trc trc 0 1 2 3 The tracking function is not used. Used for weighing a very light sample. The tracking function is used. Normal zero tracking. The tracking function is used.
9-5 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.
Interval memory mode The weighing data is periodically stored in memory. Required setting Optional setting Example dout dout dout dout prt 3 data 2 Interval memory mode Data memory function is used. Stores weighing data. int Interval time 5-td1, 2, or 3 Adds the time and date.
KF format 5if type 2 This is the Karl-Fischer moisture meter format and is used when the peripheral equipment can only communicate using this format. This format consists of fourteen characters excluding the terminator. This format has no header characters. The polarity sign is placed before the data, with spaces in place of leading zeros, if the data is not zero or overloaded. This format outputs the unit only for a stable value.
9-7 Description of the Data Format Added to the Weighing Data ID number dout 5-id 1 The number to identify a specific balance. This format consists of seven characters excluding the terminator. Data number dout d-no 1 This format outputs the data number just before the data is transmitted using the RS-232C interface. This format consists of six characters excluding the terminator. When CSV format (5if type 5) is selected, the period ( . ) is replaced with a comma ( , ).
9-8 Data Format Examples 46
Note When “Pound Ounce” is selected, the data is output with the unit of ounce (oz).
9-9 Clock and Calendar Function The balance is equipped with a clock and calendar function. When the “GLP output (info)” parameter is set to “1” or “2” and the “Time/Date output (5-td)” parameter is set to “1”, “2” or “3”, the time and date are added to the output data. Set or confirm the time and date as follows: Operation 1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed, then release the key. 2 Press the SAMPLE key several times to display Cl adj . 3 Press the PRINT key.
Confirming the date 6 The current date is displayed with all the digits blinking. To change the display order of year (y), month (n) and day (d), press the MODE key. The date is output in the order as specified. When the date is correct and the operation is to be finished, press the CAL key and proceed to step 8. When the time is to be confirmed again, press the SAMPLE key and go back to step 4. When the date is not correct and is to be changed, press the RE-ZERO key and proceed to step 7.
9-10 Comparator Function The results of the comparison are indicated by HI OK LO on the display.
Weighing input mode Press the RE-ZERO key. The balance displays 0.0 g. Place a sample, with a mass that corresponds to the upper limit value, on the pan. Press the PRINT key to store the upper limit value. Remove the sample. The balance displays Cp lo . With Cp lo displayed, press the PRINT key. The current setting of the lower limit value is 9 displayed with all of the digits blinking. When the current setting is not to be changed, press the PRINT or CAL key to proceed to step 10.
9 With Cp lnt displayed, press the PRINT key. The current setting of the tolerance value is displayed with all the digits blinking. When the current setting is not to be changed, press the PRINT or CAL key to proceed to step10. When the current setting is to be changed, press the RE-ZERO key. The balance is now in the digital input mode. Change the setting using the following keys. SAMPLE key RE-ZERO key PRINT key CAL key To select the digit to change the value. To change the value of the digit selected.
Setting the function table 2 Press and hold the SAMPLE key until ba5fnc of the function table is displayed, then release the key. 3 Press the SAMPLE key several times to display Cp fnc . 4 Press the PRINT key. 5 Press the SAMPLE key several times to display 6 Press the RE-ZERO key to display Cp-b 1 Cp-b 0 . . Note To disable the main display comparison funciton, set the “Main display comparison (Cp-b)” parameter to “0”. 7 Press the PRINT key to store the setting.
10. 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 maintained in non-volatile memory even if the AC adapter is removed. 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.
10-2 GLP Report Set the following parameters to output the report. To print the report, set the “GLP output (info)” parameter to “1” and use MODE 3 of the AD-8121B. For details on using the printer, refer to “15-1 Connection to the AD-8121B Printer”. To output the report to a personal computer using the RS-232C interface, set the “GLP output (info)” parameter to “2”. If the time and date are not correct, set the correct time and date in “Clock (Cl adj)” of the function table.
Calibration report using an external weight When the setting is “info 1”: When the setting is “info 2”: Calibration test report using an external weight (Calibration test does not perform calibration.
Title block and end block When weight 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 weight values in the GLP report. Note To output the report to an AD-8121B , use MODE 3 of the AD-8121B. Caution If the data memory function is used, the “Title block” and “End block” can not be output. Operation 1 With the weighing data displayed, press and hold the PRINT key, then release the key. S5tart is displayed.
11. DATA MEMORY Data memory is a function to store weighing data, calibration data and unit mass in memory. Of the data in memory, the balance can only display the weighing data. The weighing data and calibration data in memory are available for outputting at one time to a printer or personal computer. One of the following data sets can be stored: Weighing data (Up to 200 sets. 100 sets when the time and date are added.
11-2 Memory for Weighing Data The data memory function can store 200 sets of weighing data (100 set if time and date are added). Even if the AC adapter is removed, the data is maintained in non-volatile memory. It is not necessary that the printer or computer be continually connected to the balance, because the balance stores the weighing data in memory.
The following commands can not be used during data storage. Q Query command for weighing data. S Query command for stable weighing data. SI Query command for weighing data. SIR Query command for continuous weighing data.
Recalling the memory data Confirm that the “Data memory (data)” parameter is set to “2”. reCall is displayed, then release the key. 1 Press and hold the PRINT key until 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.
11-3 Memory for Calibration and Calibration Test Data 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” illuminates in the upper left of the display as shown below.
11-4 Memory for Unit Mass in the Counting Mode The data memory function can store 50 sets of unit mass for the counting mode. Even if the AC adapter is removed, the data is maintained in non-volatile memory. Among the 50 sets, “p01” is the memory function for the standard counting mode. The unit mass in memory can be recalled and used for weighing. The unit mass in memory can be recalled and changed. Note The recalled unit mass can be changed, using the weighing input mode or the digital input mode.
Weighing input mode In the weighing input mode, the specified number of samples is placed on the pan to store the unit mass. Re-storing the unit mass or performing Automatic Counting Accuracy Improvement (ACAI) on the re-stored unit mass is possible. Follow the procedure described in “5-2 Counting Mode (PCS)”. Use the following keys to store a unit mass in weighing input mode. RE-ZERO key SAMPLE key PRINT key CAL key MODE key To set the display to zero.
11-5 Memory for Comparator Settings The data memory function can store 20 sets of upper and lower limit values for the comparator mode. The reference value or tolerance value for the comparator mode can not be stored in memory. The upper and lower limit values in memory can be recalled easily using the MODE key and used for weighing. The upper and lower limit values in memory can be recalled and changed.
Digital input mode In the digital input mode, the upper and lower limit values are entered digitally using the keys. The display in the digital input mode is shown below. The digit to be changed blinks Use the following keys to store upper and lower limit values in digital input mode. SAMPLE key RE-ZERO key MODE key PRINT key CAL key MODE key To select the digit to be changed. To change the value of the selected digit. To switch the polarity. To store the upper and lower limit values.
Recalling the upper and lower limit values (Quick selection mode) The procedure below describes an easy way to recall the upper and lower limit values to be used for weighing. When the recalled upper and lower limit values are to be changed, refer to “Storing the upper and lower limit values”. 1 Set the “Data memory (data)” parameter to “4”. 2 Press the MODE key to enter the upper/lower limit value recalling mode. The upper limit value last selected with its comparator number appears.
Storing the tare value To store a new tare value: Recall the stored tare value to be changed (“t01” to “t20”). Then, change the recalled tare value using the digital input mode or the weighing input mode, and store the new value. Notes When the RE-ZERO key is pressed with nothing placed on the weighing pan, zero is displayed, The NET indicator does not illuminate. “t-- ” appears when a tare operation is performed without using the tare value stored in memory.
Weighing input mode In the weighing input mode, a sample tare container is placed on the pan to store the tare value. Notes Pressing the CAL key will interrupt the operation and the balance will return to the tare value confirmation mode (step 3 in “Storing the tare value”). To go to the digital input mode, press and hold the MODE key. 1 The first display in the weighing input mode is the current weight value and the selected tare number with PT blinking. 2 Press the RE-ZERO key to set the display to zero.
Recalling the tare value (Quick selection mode) The procedure below describes an easy way to recall the tare value to be used for weighing. When the recalled tare value is to be changed, refer to “Storing the tare value”. 1 Set the “Data memory (data)” parameter to “5”. 2 Press the MODE key to enter the tare value recalling mode. The tare value last selected with its tare number appears. The display is as shown to the right, with all the digits blinking. 3 Press the MODE key to select the value.
11-7 Data Memory: Quick Selection Mode The data memory has a quick selection mode, to recall data in memory quickly. Using the quick selection mode, the comparator settings or the tare value, whichever is selected in the function table, can be recalled, by a simple operation, using the MODE key. Note While the data memory function is in use, unit selection using the MODE key is not available. Use the quick selection mode as follows. 1 Press the MODE key to enter the memory data recalling mode.
11-8 Data Memory: Confirmation and Storage Mode The confirmation and storage mode can change and store the recalled data. Of the three types of memory data listed below, one may be selected in the function table, and is available for changes using this mode. Unit mass in the counting mode Comparator settings Tare value Notes To change the memory data other than specified in the function table, re-set the Data memory (data)” parameter of the function table.
12. PROGRAMMABLE-UNIT This is a programmable unit conversion function. It multiplies the weighing data in kilograms by an arbitrary coefficient set in the function table and displays the result. The coefficient must be within the range between the minimum and maximum shown below. If the coefficient set is beyond the range, an error is displayed and the balance returns to the coefficient setting mode, prompting to enter an appropriate value. A coefficient of 1 was set at the factory.
13. DENSITY MEASUREMENT The GP series balance is equipped with a density mode. It calculates the density of a solid using the weight of a sample in air and the weight in liquid. The density mode was not selected for use when the balance was shipped from the factory. To use the mode, change the function table and activate the density mode. Inputting order, of the parameters necessary for density measurement, can be changed. A part of the parameters can be changed and used for re-calculating the density.
(2) Selecting a parameter to set. 1 Press the SAMPLE key to select a parameter to set. Each pressing of the key switches the parameter. 2 Press the RE-ZERO key to enter the inputting mode of the parameter selected. (3) Setting the parameter. A. Entering the weight of a sample in air. 1 Confirm that nothing is placed on the upper pan (in air). Press the RE-ZERO key to set the display to zero. 2 Place a sample on the upper pan. When the value displayed on the balance becomes stable, press the PRINT key.
C. 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. • Enter the water temperature (ldin 0) The water temperature currently set (unit:°C, factory setting : 25°C) is displayed. Use the following keys to change the value. RE-ZERO key To increase the temperature by one degree. (0-99°C) MODE key To decrease the temperature by one degree.
14. I/O UNIT SPECIFICATIONS (Standard) 14-1 RS-232C//External Contact Input D-Sub 25 pin numbers D-Sub 25 pin assignments Pin No.
External contact input By connecting pin 18 to pin 7, or pin 19 to pin 7, for more than 100 ms, the same operation as performed by pressing the RE-ZERO key or the PRINT key, will be performed. Use of example The external input connector (AX-HDB-25P/CTF) and the foot switch (AX-SW128) are sold separately.
15. CONNECTION TO PERIPHERAL EQUIPMENT 15-1 Connection to the AD-8121B Printer Set the following parameters to use the AD-8121B printer. Function setting dout prt 0-3 dout ap-p 0-2 dout ap-b 0-2 dout pU5e 0,1 5if bp5 2 5if btpr 0 5if Crlf 0 5if Ct5 0 Factory setting Factory setting Factory setting Factory setting Description Selects a print mode. Selects the polarity for the auto print mode. Selects the auto print difference. Selects data output pause.
15-3 Using Windows Communication Tools (WinCT) When Windows is used as an operating system in a personal computer, the provided WinCT software can be used to transmit the weighing data to the personal computer. The WinCT software has two communication methods: “RsCom” and “RsKey”. For details on WinCT, refer to the WinCT instruction manual. RsCom Can transmit commands to control the balance. Can make bi-directional communication between the balance and a personal computer using the RS-232C interface.
16. COMMANDS 16-1 Command List Note A command has a terminator added, that is specified using “5if Crlf” of the function table, and is sent to the balance. Commands to query weighing data C Cancels the S or SIR command. Q Requests the weighing data immediately. S Requests the weighing data when stabilized. SI Requests the weighing data immediately. SIR Requests the weighing data continuously. Commands to control the balance CAL Same as the CAL key. OFF Turns the display off. ON Turns the display on.
16-2 Acknowledge Code and Error Codes When the “Serial interface function (5if)” parameter is set to “erCd 1”, 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.
17. MAINTENANCE 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. Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that is moistened with warm water and a mild detergent. The mass of the internal mass may change due to corrosion or other damage caused by the operating environment, or due to aging. Check the internal mass using an external weight periodically.
Sample and container Has the sample absorbed or lost moisture due to the ambient conditions such as temperature and humidity? Has the temperature of the container been allowed to equalize to the ambient temperature? Refer to “3-2 During Use”. Is the sample charged with static electricity? Refer to “3-2 During Use”. Is the sample of magnetic material such as iron? Caution is required for weighing magnetic materials. Refer to “3-2 During Use”.
Display Error code (CHECK NG) (CHECK NO) (Blinking) (Illuminated) Description Weighing pan Error The weight value is too light. Confirm that the weighing pan is properly installed and calibrate the balance. Sample mass error The balance can not store the sample for the counting mode or for the percent mode because it is too light. Use a larger sample. 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.
Display Error code EC, E00 EC, E01 EC, E02 EC, E03 EC, E04 EC, E06 EC, E07 Other errors Description Memory type error Type of memory set in the function table and type of data stored are different. For details, refer to “11. DATA MEMORY”. Communications error A protocol error occurred in communications. Confirm the format, baud rate and parity. Undefined command error An undefined command was received. Confirm the command. Not ready A received command can not be processed. e.g.
19. SPECIFICATIONS GP-12K GP-20K GP-30K GP-32K GP-30KS GP-32KS GP-40K Weighing capacity 12 kg 21 kg 31 kg 31 kg 41 kg Maximum display 12.0084 kg 21.0084 kg 31.0084 kg 31.008 kg 41.0080 kg (See bottom for the description of ∗) 6.1009 kg∗ Minimum weighing value (1 digit) 0.1 g 1 g/0.1 g 0.5 g Repeatability (Standard deviation) 0.1 g 0.5 g/0.1 g 0.5 g Linearity ±0.2 g ±1g/±0.2 g ±1g Approx.1.
Weighing capacity Maximum display (See bottom for ∗) GP-60K GP-61K GP-100K GP-102K GP-60KS GP-61KS GP-100KS 61 kg 61 kg 101 kg 101 kg 61.084 kg 61.0084 kg 101.084 kg 101.08kg 61.009 kg∗ Minimum weighing value (1 digit) 1g 0.1 g 1g 10 g/1 g Repeatability (Standard deviation) 0.7 g 0.2 g 1g 5 g/1 g Linearity ±1 g ±0.5 g ±2 g ±10 g/±2 g Approx.1.
20.
Separate Display Type: GP-30KS/32KS/60KS/61KS/100KS Note The size in parentheses is for GP-100KS Unit: mm 90
21. OPTIONS AD-8121B Printer Compact dot-matrix printer Statistical function, clock and calendar function, interval print function, graphic print function, dump print mode 5 x 7 dots, 16 characters per line Print paper (AX-PP143, 45 (W) x 50 (L) mm , ø65 mm) AC adapter or alkaline battery OP-04: Comparator output (relay/ with a buzzer)/RS-232C/Current loop Generates a relay output corresponding to HI , OK and LO in the display. Current loop and RS-232C can be used at the same time.
22. TERMS/INDEX Terms Stable value The stable weight data, indicated by the illuminated stabilization indicator. Environment Ambient conditions such as vibration, drafts, temperature, static electricity and magnetic fields which affect the weighing operation. Store To save the weighing data, unit mass or calibration data using the data memory function. Calibration Adjustment of the balance so that it can weigh accurately. Output To output the weighing data using the RS-232C interface.
Index Cp Hi ................................................................ 37 Cp in ................................................................ 37 Cp lmt ................................................................ 37 Cp ref ................................................................ 37 Cp-b ................................................................ 37 Cp-lo ................................................................ 37 Cp-r ........................................................
Permit ................................................................ 34 Power consumption ........................................... 87, 88 PRINT key..........................................................11, 16 Printer bracket ....................................................... 91 Prior notice indicator of automatic self calibration ....11 Processing indicator .................................................11 Gross indicator ........................................................
MEMO 95
MEMO 96