WMPD4002746B
This Manual and Marks All safety messages are identified by the following, “WARNING” or “CAUTION”, of ANSI Z535.4 (American National Standard Institute: Product Safety Signs and Labels). The meanings are as follows: WARNING A potentially hazardous situation, which if not avoided, could result in death or serious injury. CAUTION A potentially hazardous situation, which if not avoided, may result in minor or moderate injury. This is a hazard alert mark.
CONTENTS 1. INTRODUCTION ....................................................................................................................3 2. UNPACKING...........................................................................................................................3 3. PART NAMES AND FUNCTIONS .........................................................................................4 4. SETTING UP ............................................................................................
12. SPECIFICATIONS................................................................................................................37 12.1. Generals ..................................................................................................................37 12.2. Weighing Units.........................................................................................................37 12.3. Options .........................................................................................................
1. INTRODUCTION This manual describes how this balance works and how to get the most out of it in terms of performance. The EJ-123 and EJ-303 compact precision balance has the following features: The balance is high-resolution type electronic balance having a display resolution of 1/120,000 to 1/300,000. The balance has a counting function, a percent function, a hold function and a total function. The LCD backlight will help with use in a dimly lighted place.
3.
Turns the power ON or OFF. Switches the weighing units and modes. Clears the display to zero (combined zero and tare). Held down to enter the function setting mode. pcs mode: Enters the sample unit weight storing mode. % mode: Enters the 100% weight storing mode. Total mode: Adds the weight value to total. Outputs the weight value to a printer, or computer. Enters a unit weight, 100% weight or other setting values to the balance.
4. SETTING UP 4.1. Setting Up Your Balance 1. Place the weighing pan on the main unit. 2. Adjust the level of the balance using the leveling feet. Use the spirit level to confirm. The bubble should be in the center of the circle. 3. Calibrate your balance before use. (Refer to “7. CALIBRATION”) About the wind shield cap Should the displayed weight value be unstable due to a draft, attach the accessory wind shield cap to the hole located on the top of the breeze break.
4.2. Power Source For the power source, the AC adapter or 4 x “AA” size dry-cell batteries can be used. When Using The AC Adapter Use a stable power source. To use the AC adapter, insert the AC adapter plug into the AC adapter jack AC adapter jack on the rear side of the balance. The balance is always connected to power internally (warming up status) while the AC adapter is connected to the balance even when nothing is shown on the display.
4.3. Breeze Break The breeze break can prevent a measurement error due to a (disturbing) wind. Wipe it with a dry lint free cloth or a lint free cloth which is moistened with warm water. To keep the antistatic treatment, do not use alcohols and solvents to clean the balance. When an antistatic treatment becomes weak, apply an antistatic agent to the clear plastic parts. The clear cover can be disconnected from the fixing frame easily when adding an excessive stress during operation.
5. OPERATION 5.1. Turn The Power ON And OFF 1. Press the ON:OFF key to turn the power ON. STABLE Weighing units NET ZERO All of the symbols are displayed as shown above. (About units: Only the available units will be displayed.) When the scale is operating using dry-cell batteries, the scale performs count a down using the under-bar on the display. The display turns off except for a weighing unit and the decimal point.
5.3. Units The most common unit of weight used around the world is the gram, but there is often a need to shift to alternative units specific to the country where the balance is used or to select modes such as counting or percent.
5.5. Basic Operation 1. Select a weighing unit. Container 2. When the display does not show zero, press the RE-ZERO key to set the display to zero. Weighing pan 3. When using a tare (container), place the container on the weighing pan, and press the RE-ZERO key to subtract the tare weight. 4. Place the object to be weighed on the pan or in the container. Wait for the STABLE indicator to be displayed and read the value. When using the display hold mode, the hold indicator HOLD is displayed. 5.
5.7. Counting Mode (pcs) The balance weighs the sample pieces and calculates the unit weight. Using the sample unit weight, the scale counts the number of items in the sample. As for the minimum unit weight acceptable, see the function setting “Umin”. Selecting The Counting Mode 1. Press the UNITS key to select .( 0 :pieces) Storing The Sample Unit 2. Press the SAMPLE key to enter the sample unit weight storing mode. 10 - 3. To select the number of samples, press the 1SAMPLE key.
10. Counting accuracy is improved when the ACAI indicator turns off. Each time the above operation is performed, a more accurate unit weight will be obtained. There is no definite upper limit of ACAI range for the number of samples exceeding 100. Try to add a similar number of samples as that displayed. 5.8. Percent Mode (%) Displays the weight value in percentage compared to a reference (100%) weight. Selecting The Percent Mode 1. Press the UNITS key to select %.
6. ACCUMULATION FUNCTION This function counts the number of times articles are weighed, calculates the total mass value and can display the number (accumulation count) and accumulated mass value. Preset the item "Hold" of the function list to use the accumulation function. The accumulation count and accumulated mass value are stored in the scale even if the power is removed. Indicators And Keys The indicator is displayed when storing the accumulation data.
Operations Selecting A Weighing Unit 1. Select a unit to be used in the accumulation function with pressing the UNITS key. The unit can not change after storing the accumulation data. If changing the unit, reset the current accumulation data, change the unit. Plural units can not use at the same time. ZERO Weighing pan ZERO 4. When displaying stable weight value, press the SAMPLE key to accumulate it. The indicator is displayed. 5. Repeat step 2, 3, 4 to weigh other samples.
7. CALIBRATION This function adjusts the balance for accurate weighing. Perform calibration in the following cases. When the balance is first used. When the balance has been moved. For regular calibration. Calibration (CAL) switch Calibration (CAL) switch cover 7.1. Calibration Using A Weight Prepare a calibration weight (sold separately) in advance. 1. Warm up the balance for at least half an hour with nothing on the pan. 2.
7. end is displayed. Remove the weight from the pan. To store When the GLP output (function setting “info 1” or “info 2”) is selected, glp is displayed. The calibration report is output and end is displayed again. Then the balance will be turned off. Note The value set in step 4 is stored in memory even after the power is switched OFF.
8. FUNCTIONS 8.1. Key Operation The ON:OFF key to cancel the operation and turns the balance off. Item key to select a class and an item. In the weighing mode, press and hold the key to enter the function setting mode. The enter key to proceed to the selected class and store the setting per class and goes to the next class. The parameter key to select a parameter. The cancel key to cancel the operation, and proceed to the next class or return to the weighing mode. 8.2.
8.3. Setting Example To set auto power-off function to “Enabled”, and the ACAI function to “Disabled”. 1. Press and hold the SAMPLE key to display func . Press and hold func 2. Press the PRINT key. The balance displays poff 0 . poff 0 3. Press the RE-ZERO key to display poff 1 . Each pressing switches the parameter 4. Press the SAMPLE aCai 1 . key several times to display poff 1 To confirm aCai 1 5. Press the RE-ZERO key to select aCai 0 . Each pressing switches the parameter 6.
8.4. Storing Weighing Units It is possible to store the weighing units that will actually be used from the units available. For the units available, see “5.3. Units”. Select and store the weighing units as described below: 1. Press and hold the 2. Press the 3. Press the SAMPLE SAMPLE PRINT func key to display key to display Unit . func Unit key. 4. Press the SAMPLE be stored. Press and hold .
8.5. Function List ParamDescription eter 0 Auto power-off disabled poff Automatically power off Auto power-off 1 Auto power-off enabled 0 Fast / sensitive Cond Software filtering 1 Response 2 Slow / stable The STABLE indicator is 0 Judge precisely (± 0.5d) displayed when the fluctuation 5t-b (± 1d) 1 interval of a regular time Stability band width weighing display is less than 2 Judge moderately (± 2d) the reference value.
ParamDescription eter 0 Water temperature ldin The way to input liquid density. Liquid density input 1 Liquid density 0 Not used d = digit : in unit of minimum display 1 Hold. Limit : ±10 d. Hold: When a stable value leaves Hold 2 Hold. Limit : ±50 d. more than 4 digits from zero band, Display hold function the display value is held. When the 3 Hold. Limit : ±100 d. value is change more than a limit, 4 Hold. Limit : ±200 d. the display hold is released.
9. OPTIONS The following options are available for the EJ-123/EJ-303 balance: EJ-02 USB interface EJ-03 RS-232C serial interface EJ-13 Density determination kit Note The EJ-123/EJ-303 balance have only one option slot for a communications interface. Either the EJ-02 USB interface or the EJ-03 RS-232C serial interface can be installed at one time. 9.1. EJ-02 USB Interface The EJ-02 allows an EJ-123/EJ-303 balance to be connected with a printer or a personal computer with the USB interface.
9.2. EJ-03 RS-232C Serial Interface The EJ-03 allows an EJ-123/EJ-303 balance to be connected with a printer or a personal computer with the RS-232C interface. The RS-232C serial interface has the following four modes. Stream mode ...................Outputs data continuously. Key mode..........................Outputs data by pressing the PRINT key. Auto-print mode .............Outputs data which meets the conditions of auto-print. Command mode ............
Pin Connections D-Sub 9 pin male connector 1 2 3 4 5 6 7 8 9 Inside of the balance N.C. Transmit data Receive data N.C. Signal ground Data set ready Request to send Clear to send N.C. The interface is designated as DCE (Data Communication Equipment). 9.3. Data Format S T , + Header 0 0 0 0 . 0 0 0 g CR LF Data Separator Unit Terminator (“ ” shows a space.
Data Output Mode Stream mode Set the function to “prt 0”. The balance outputs the current display data. The data-update rate is approximately 10 times per second. This rate is the same as the display-update. The balance does not output data while it is in the setting mode. Key mode Set the function to “prt 1, 2 or 3”. When the PRINT key is pressed while the weight value is stable (the STABLE indicator is on), the balance transmits the data. When the data is transmitted, the display will blink one time.
9.4. EJ-13 Density Determination Kit Using this option and calculation program, the balance can determine the density (specific gravity) of a sample. Breeze break Weighing pan EJ-13 Installation Remove the weighing pan and the fixing frame. Install the beaker stand on the balance and attach the pan stand to the pan support of the balance. Fixing frame Remove the breeze break that can not be used while using the density determination kit.
Entering the density of a liquid (ldin = 0) 1. Press the UNITS key to select SG indicator SG . A 2. Press and hold the UNITS key to display the liquid density input mode. The display will show the water temperature currently set (factory setting: 25 °C). SG 0.000 3. Using the RE-ZERO (to increment the value) and SAMPLE keys (to shift the selected digit), set the value and press the PRINT key to store.
Example of density measurement Selecting the density measurement mode 1. Press the UNITS key to select SG Measuring weight in air. . SG indicator The weighing unit is “g”. The display shows that A blinks and the balance is measuring the weight in air. A SG A SG 0.000 When the display does not show zero, press the RE-ZERO key to set the display to zero. 2. Place a sample on the upper pan. 20.000 3.
10. ID NUMBER AND GLP The ID number is used to identify the balance when Good Laboratory Practice (GLP) is used. The ID number is stored in memory even if power to the balance is switched OFF. The following GLP data is transmitted to a printer or a computer using the optional RS-232C serial interface.
10.2. GLP Report To print the GLP report, set the function to “info 1”, “pU5e 1” and set the AD-8121B printer to MODE 3. To output the GLP report to a personal computer, set the function to “info 2”, “pU5e 0” . Calibration Report Perform calibration using a weight. Then the balance will output a calibration report. Refer to “7.1. Calibration Using A Weight” about the calibration. 1. Perform calibration according to “7.1. Calibration Using A Weight”. 2. end appears when the calibration has been completed.
Calibration Test Report The calibration test mode is used to compare a calibration test weight with the calibration test data weighed by the balance. This test does not perform calibration and this mode is available even after sealing the calibration (CAL) switch. Press and hold both keys. 1. Press and hold the SAMPLE and PRINT keys. CC will appear. Then, release both keys. Pressing and holding the calibration (CAL) switch will also display CC after Cal . Then, release the CAL switch while showing CC . 2.
AD-8121 format “info 1” ___________A_&_D MODEL_____EJ-123 S/N____Q12345678 ID________ABCDEF DATE__2013/11/14 TIME____02:53:21 CAL.TEST(EXT.) ACTUAL ________0.000__g _____+100.001__g TARGET _____+100.
“End Block” 3. Press and hold the PRINT key. Release the PRINT key when recend is displayed. The balance outputs the “End block”. 4. Press and hold recend To output “End block” end is displayed. The balance return to the weighing mode. end The balance return to the weighing mode. AD-8121 format “info 1” ___________A_&_D MODEL_____EJ-123 S/N____Q12345678 ID_______ABCDEF DATE__2013/11/14 START TIME____02:53:21 Title block Manufacturer Model Serial number ID number Date Start time ST,+0012.
11. MAINTENANCE 11.1. Notes On Maintenance Do not disassemble the balance. Contact your local A&D dealer if your balance needs service or repair. Please use the original package for transportation. Do not use organic solvents to clean the balance. Use a lint free cloth dampened with warm water and a mild detergent. To clean around the pan support, refer to the illustrations below.
50 100 - Note: Pressing the PRINT key without adding samples may reduce the counting accuracy. Starting from the 100 samples, 100 - may be displayed when the sample weight is light. In this case, press the PRINT key without adding any samples. When “aCai 0” (ACAI disabled) or “Umin 2” is selected, this notice is not shown. CAL errors -Cal e Warning to indicate that calibration has been canceled because the calibration weight is too light. Check the weighing pan and the calibration weight.
12. SPECIFICATIONS 12.1. Generals MODEL Weight capacity Minimum display “d” = digit Repeatability (Standard deviation) Linearity Sensitivity drift No. of samples Max. count * Min. unit weight * Min. % display Min. 100 % weight Display Display update Operating temp. Power supply Battery operation Weighing pan size Weight Calibration weight (factory setting) EJ-123 EJ-303 120 g 310 g 0.001 g 0.001 g 0.003 g 0.003 g ±0.003 g ±0.
12.3. Options EJ-02 EJ-03 EJ-13 USB interface RS-232C serial interface Density determination kit 12.4.
13. GRAVITY ACCELERATION MAP Values Of Gravity At Various Locations Amsterdam Athens Auckland NZ Bangkok Birmingham Brussels Buenos Aires Calcutta Cape Town Chicago Copenhagen Cyprus Djakarta Frankfurt Glasgow Havana Helsinki Kuwait Lisbon London (Greenwich) Los Angeles Madrid 9.813 m/s2 9.807 m/s2 9.799 m/s2 9.783 m/s2 9.813 m/s2 9.811 m/s2 9.797 m/s2 9.788 m/s2 9.796 m/s2 9.803 m/s2 9.815 m/s2 9.797 m/s2 9.781 m/s2 9.810 m/s2 9.816 m/s2 9.788 m/s2 9.819 m/s2 9.793 m/s2 9.801 m/s2 9.812 m/s2 9.796 m/s2 9.
World Map 40
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.
