Summary of EJ-123
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1wmpd4002746b.
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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 dea...
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1 contents 1. Introduction ....................................................................................................................3 2. Unpacking...........................................................................................................................3 3. Part names and ...
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2 12. Specifications................................................................................................................37 12.1. Generals ..................................................................................................................37 12.2. Weighing units................
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3 protective film 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 ...
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4 3. Part names and functions total indicator measurement in air for specific gravity m+ indicator measurement in water acai indicator for specific gravity battery indicator density (specific gravity) hold indicator stable indicator net indicator zero indicator breeze break weighing pan spirit level...
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5 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 ...
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6 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”) a...
Page 9: 4.2. Power Source
7 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 on the rear side of the balance. The balance is always connected t...
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8 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 tre...
Page 11: 5.2. Lcd Backlight
9 5. Operation 5.1. Turn the power on and off 1. Press the on:off key to turn the power on. 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 unde...
Page 12: 5.3. Units
10 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. The units and the order they appear in the display are as follows:...
Page 13: 5.5. Basic Operation
11 5.5. Basic operation 1. Select a weighing unit. 2. When the display does not show zero, press the re-zero key to set the display to zero. 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 wei...
Page 14: 5.7. Counting Mode (Pcs)
12 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 unit...
Page 15: 5.8. Percent Mode (%)
13 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 dis...
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14 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 ...
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15 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 ...
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16 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. 7.1. Calibration using a weight prepare a calibration weight (sold separately) in advance. ...
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17 7. End is displayed. Remove the weight from the pan. 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 a...
Page 20: 8.1. Key Operation
18 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...
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19 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 . 2. Press the print key. The balance displays poff 0 . 3. Press the re-zero key to display poff 1 . 4. Press the sample key several times to dis...
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20 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 sample key to display func . 2. Press the sample ke...
Page 23: 8.5. Function List
21 8.5. Function list class item param- eter description 0 auto power-off disabled poff auto power-off 1 auto power-off enabled automatically power off 0 fast / sensitive 1 cond response 2 slow / stable software filtering 0 judge precisely (± 0.5d) 1 (± 1d) 5t-b stability band width 2 judge moderate...
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22 class item param- eter description 0 water temperature ldin liquid density input 1 liquid density the way to input liquid density. 0 not used 1 hold. Limit : ±10 d. 2 hold. Limit : ±50 d. 3 hold. Limit : ±100 d. Hold display hold function 4 hold. Limit : ±200 d. D = digit : in unit of minimum...
Page 25: 9.1. Ej-02 Usb Interface
23 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-...
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24 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 .............
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25 separator (“ ” shows a space.) pin connections d-sub 9 pin male connector the interface is designated as dce (data communication equipment). 9.3. Data format s t , + 0 0 0 0 . 0 0 0 g c r l f header data unit terminator there are four types of headers: st : stable weighing data (including % data)...
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26 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 functi...
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27 9.4. Ej-13 density determination kit using this option and calculation program, the balance can determine the density (specific gravity) of a sample. 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 suppor...
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28 entering the density of a liquid (ldin =0) 1. Press the units key to select sg . 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). 3. Using the re-zero (to increment the value) and sample k...
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29 example of density measurement selecting the density measurement mode 1. Press the units key to select sg . The weighing unit is “g”. The display shows that a blinks and the balance is measuring the weight in air. When the display does not show zero, press the re-zero key to set the display to ze...
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30 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 inter...
Page 33: 10.2. Glp Report
31 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 ...
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32 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. 1. Press and hold the sample and...
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33 ad-8121 format “info 1” general format “info 2” ~ : space, ascii 20h cr : carriage return, ascii 0dh lf : line feed, ascii 04ah output of “title block” and “end block” when a weight value is recorded as the glp report. “title block” and “end block” are added at the beginning and at the end of a g...
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34 “end block” 3. Press and hold the print key. Release the print key when recend is displayed. The balance outputs the “end block”. 4. End is displayed. The balance return to the weighing mode. Ad-8121 format “info 1” general format “info 2” ~ : space, ascii 20h cr : carriage return, ascii 0dh lf :...
Page 37: 11.2. Error Codes
35 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 an...
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36 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 no...
Page 39: 12.1. Generals
37 12. Specifications 12.1. Generals model ej-123 ej-303 weight capacity 120 g 310 g minimum display “d” = digit 0.001 g 0.001 g repeatability (standard deviation) 0.003 g 0.003 g linearity ±0.003 g ±0.003 g sensitivity drift ±20 ppm / °c (10 °c to 30 °c / 50 °f to 86 °f) no. Of samples 5, 10, 25, 5...
Page 40: 12.3. Options
38 12.3. Options ej-02 usb interface ej-03 rs-232c serial interface ej-13 density determination kit 12.4. Dimensions unit: mm 190 110 133 211 5 126 minimum 90 ○.
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39 13. Gravity acceleration map values of gravity at various locations amsterdam 9.813 m/s 2 manila 9.784 m/s 2 athens 9.807 m/s 2 melbourne 9.800 m/s 2 auckland nz 9.799 m/s 2 mexico city 9.779 m/s 2 bangkok 9.783 m/s 2 milan 9.806 m/s 2 birmingham 9.813 m/s 2 new york 9.802 m/s 2 brussels 9.811 m/...
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40 world map.
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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. Telephone: [1] (408) 263-5333 fax: [1] (408)263-0119 a&d instruments limited unit 24/26 blacklands way,...