WMPD4001917
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 CAUTION A potentially hazardous situation which, if not avoided, could result in death or serious injury. 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 ...................................................................................................................
11. MAINTENANCE ..........................................................................................................34 11-1. Notes on maintenance ...............................................................................................................34 11-2. Error codes ................................................................................................................................34 12. SPECIFICATIONS .............................................................................
1. INTRODUCTION This manual describes how this balance works and how to get the most out of it in terms of performance. EJ series balances have the following features: The EJ series are high-resolution type electronic balances having a display resolution of 1/12,000 ~ 1/60,000. The balance has a counting function, % function and a comparator function. The backlight LCD will help with use in a dimly lighted place.
3. PART NAMES AND FUNCTIONS Battery indicator STABLE indicator NET indicator ZERO indicator ON:OFF ACAI indicator Comparator results STABLE Specific gravity Weighing units NET ZERO Weighing pan Round pan for key EJ-120 / EJ-200 / EJ-300 / EJ-410 / EJ-610. Spirit level LCD Leveling foot SAMPLE Calibration switch cover (bottom) PRINT UNITS RE-ZERO key key AC adapter jack key key EJ-02 / EJ-03 slot Battery cover Security slot (Use a security cable commercially available.
4. SETTING UP 4-1. Setting up your balance 1. Place the weighing pan on the main unit as shown in “2. UNPACKING”. 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. (See “7.
Remove batteries when the balance is not to be used for a long time. They may leak and cause damage to the balance. Damage due to battery leakage is not covered by the warranty. Installing batteries 1. Turn off the balance and disconnect the AC adapter if used. 2. Slide the battery cover off. 3. Push the battery box up to unhook and pull it out. 4. Insert new four batteries (LR6 / R6P / AA size) into the battery box, taking extreme care of the polarities. 5.
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 units available will be displayed.) The display turns off except for a weighing unit and the decimal point. The balance waits for the weighing data to become stable, and zero will be displayed with the ZERO indicator (power-on zero).
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.
5-4. Selecting a weighing unit Press the UNITS key to select a unit. The following sections are a description of the three common units: g (gram mode), pcs (counting mode), and % (percent mode). Each pressing switches the units available in the order described on the previous page. ZERO 0.0 STABLE indicator 5-5. Basic operation Container 1. Select a weighing unit. 2. When the display does not show zero, press the RE-ZERO key to set the display to zero. Weighing pan 3.
5-6. Counting mode (pcs) Weighs the sample pieces and calculate its unit weight. Using the sample unit weight, the scale counts the number of parts or items. 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.
9. The balance re-calculates the unit weight while the ACAI indicator is blinking. Do not touch the balance or samples on the pan until the ACAI indicator turns off. 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 the similar number of samples as displayed. 5-7.
6. COMPARATOR The results of the comparison are indicated by HI, OK or LO on the display. The comparison is as follows: LO < Lower limit value ≤ OK ≤ Upper limit value < HI Operating conditions (see the function setting “Cp”): No comparison (comparator function disabled). Compares all data. Compares all stable data. Compares plus data except those near zero (plus data greater than +4d). Compares stable plus data except those near zero (stable plus data greater than +4d).
Entering the upper and lower limit values 6. With Cp Hi displayed, press the PRINT key. Enter the upper limit value using the following keys. SAMPLE RE-ZERO key key To select the digit blinking to change. To set the value of the digit selected. Hold down the key to switch the sign “+” and “-“. (“N” designates a negative value.) PRINT key To store the value and proceed to the next step. UNITS key To cancel the value and proceed to the next step. 7. With Cp lo displayed, press the PRINT key.
7. CALIBRATION This function adjusts the balance for accurate weighing. Perform a calibration in the following cases. Calibration (CAL) switch When the balance is first used. When the balance has been moved. For regular calibration. Calibration (CAL) switch cover 7-1. Calibration using a weight Prepare the calibration weight (sold separately) in advance. 1. Warm up the balance for at least half an hour with nothing on the pan. 2.
5. At step 3, pressing the PRINT key to weigh the zero-point value. Do not touch the pan during weighing. With nothing on the pan To store Cal 0 5000.0 6. Place the calibration weight with the same value as displayed on the pan. Press the PRINT key to weigh it. Do not touch the pan during weighing. Calibration weight To store 5000.0 7. end appears. Remove the weight from the pan. When the GLP output (function setting “info 1” or “info 2”) is selected, glp is displayed.
7-2. Gravity acceleration correction When the balance is first used or has been moved to a different place, it should be calibrated using a calibration weight. But if the calibration weight cannot be prepared, the gravity acceleration correction will compensate the balance. Change the gravity acceleration value of the balance to the value of the area where the balance will be used. See the gravity acceleration map appended to the end of this manual.
8. FUNCTIONS 8-1. Key operation Cancels the operation and turns off the balance. Item key Selects a class and an item. In the weighing mode, press and hold the key to enter the function setting mode. Enter key Proceeds to the selected class. Stores the settings per class and goes to the next class. Parameter key Selects a parameter. Cancel key Cancels the operation, and goes to the next class or returns 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 func . SAMPLE key to display Press and hold func 2. Press the PRINT poff 0 . key. The balance displays poff 0 3. Press the RE-ZERO 4. Press the SAMPLE aCai 1 . Each pressing switches the parameter poff 1 . key to display key several times to display poff 1 To confirm aCai 1 5. Press the RE-ZERO key to select aCai 0 . 6. Press the PRINT key to store the parameters.
8-4. Storing weighing units It is possible to store the weighing units that will be actually 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 func . SAMPLE Press and hold key to display func 2. Press the SAMPLE Unit . Press several times key several times to display Unit 3. Press the PRINT key. Unit 4. Press the SAMPLE to be stored.
8-5. Function list Class func Item poff Auto power-off Cond Response st-b Stability band width trc Zero tracking pnt Decimal point Cp Comparator mode prt Data output mode pUse Data output pause info GLP output bps Baud rate btpr Data and parity ParamDescription eter 0 Auto power-off disabled Auto power-off enabled 1 Fast / sensitive 0 1 2 3 Slow / stable 4 Stable when within ± 0.5d/0.5s 0 1 Stable when within ± 1d/0.5s Stable when within ± 2d/0.5s 2 Disabled 0 1 Enabled 0 Point (.
Class func Item aCai ACAI function Umin Parameter ACAI disabled 0 1 ACAI enabled 0 1 2 0 1 2 3 4 0 1 0 1 2 3 4 5 Description CpHi Cplo Unit Comparator upper limit Comparator lower limit Weighing units to be displayed 1d 1/10 d total sample weight ≥5d (**) 10 pcs 25 pcs 50 pcs 100 pcs 5 pcs Water temperature Liquid density Always off Turns off after 5 seconds Turns off after 10 seconds Turns off after 30 seconds Turns off after 60 seconds Always on Setting the upper limit value Setting the
9. OPTIONS The following options are available for the EJ series: EJ-02 EJ-03 EJ-07 EJ-08 EJ-11 EJ-12 EJ-13 USB interface RS-232C serial interface Underhook for EJ-3000 / EJ-4100 / EJ-6100 Underhook for EJ-1500 / EJ-2000 Breeze break Carrying case Density Determination Kit for EJ-120 / EJ-200 / EJ-300 / EJ-410 / EJ-610 9-1. EJ-02 USB Interface EJ-02 cannot be used together with EJ-03. The EJ-02 is installed to the same slot as EJ-03 and see “9-2. EJ-03 RS-232C serial interface”.
4. Secure the EJ-02 with the screws supplied with the EJ-03. Connector inside the option slot.
Data format S T , + 0 0 0 Header 0 0 . 0 0 g CR LF Data Unit Terminator (“ ” shows a space.) Separator There are four types of headers: ST : Stable weighing data (including % data) QT : Stable counting data US : Unstable weighing data (including count and %) OL : Out of weighing range (Over) The data is normally 9 digits including a decimal point and a sign.
Key mode Set the function “prt 1, 2 or 3”. When the PRINT key is pressed while the weighing data is stable (the STABLE indicator is on), the balance transmits the data. When the data is transmitted, the display will blink one time. Auto-print mode A Set the function “prt 2”. The balance transmits the weighing data when the display is stable (the STABLE indicator is on) and the data is greater than +4d. The next output can be obtained after the display returns below +4d.
9-3. EJ-07 / EJ-08 Underhook By attaching the underhook to the bottom of the balance, large objects that are difficult to load on the weighing pan can be weighed, and the density (specific gravity) of objects may be measured. Refer to the “9-6. EJ-13 Density Determination Kit” for the information about the density measurement. EJ-07 is for use with the EJ-3000 / EJ-4100 / EJ-6100. EJ-08 is for use with the EJ-1500 / EJ-2000.
9-6. EJ-13 Density Determination Kit Using this option and calculation program, the balance can determine the density (specific gravity) of a sample. Weighing pan Fixing frame EJ-13 Installation Push the fixing frame out, and remove the weighing pan. Attach the beaker stand to the balance and fit the pan stand to the pan support of the balance.
Change the function table Selecting a way to set the density of a liquid Select the liquid density input method from the function table below. The function table is available only when the density measurement mode is selected. Class func Parameter Item ldin Liquid density input 0 Water temperature Liquid density 1 Factory setting Setting the density of a liquid 1. Press the UNITS key to select 2. Press and hold the Description UNITS SG The way to input liquid density. SG indicator .
2. Place a sample on the upper pan. 3. Wait for the STABLE indicator to be displayed and press the SAMPLE key to store the weight in air. 4. The display shows that LO blinks and the balance starts to measure weight in water. 5. Place the sample on the lower pan in water. Adjust the amount of water so that the sample is about 10 mm below water surface. 6. Wait for the STABLE indicator to be displayed and press the SAMPLE key.
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 held 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 interface.
10-2. Output example To print the GLP report, set the function “info 1” and use MODE 3 of the printer AD-8121B. To output the GLP report to a personal computer, set the function “info 2”. Data format for “calibration report” Perform calibration using a weight. Then the balance will output a calibration report. See “7-1. Calibration using a weight” about the calibration. AD-8121 format “info 1” A & D MODEL EJ-300 S/N 1234567 ID ABCDEF DATE 09/03/21 02:53:21 PM CALIBRATED(EXT.) CAL.WEIGHT +300.
“Title block” and “End block” When a weight value is recorded as the GLP data, “Title block” and “End block” are added at a group of weight values in the GLP report. To output the GLP report to the printer AD-8121B , use MODE 3 of it. 1. With the weight data displayed, press and hold the PRINT key until start is displayed. Then, the balance outputs the “Title block”. 2. The balance can output the weighing data by pressing the PRINT key or selecting the auto-print mode. 3.
2. CC 0 CC 0 is displayed. 3. If necessary to change the weight value to check, press the change the weight value using the following keys. SAMPLE key RE-ZERO PRINT key key SAMPLE key and To select the digit blinking to change. To set the value of the digit selected. To store the value and return to step 2. 4. At step 2, press the PRINT key. The zero point is weighed and the weighed value is displayed for a few seconds. With nothing on the pan CC 0 The weighed data is shown with “g”. 5.
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 warm lint free cloth dampened with a mild detergent. To clean around the pan support, refer to the drawings below.
50 100 - the unit weight. Note: Pressing the PRINT key without adding samples may reduce counting accuracy. Starting from the 100 samples, 100 - may be displayed when the sample weight is light. This is for your notice and press the PRINT key without adding any samples. When “aCai 0” (ACAI disabled) or “Umin 2” is set, this notice is not shown. CAL errors Cal e -Cal e Warning to indicate that calibration has been canceled because the calibration weight is too heavy.
12. SPECIFICATIONS 12-1. EJ series MODEL Weight capacity Min. display “d” Repeatability (Std. 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-120 120 g 0.01 g EJ-200 210 g 0.01 g EJ-300 310 g 0.01 g EJ-410 410 g 0.01 g EJ-610 610 g 0.01 g 0.01 g 0.01 g 0.01 g 0.01 g 0.01 g ±0.01 g ±0.01 g ±0.
12-2. Other weighing units MODEL Capacity oz. Min. display Capacity lb Min. display Capacity ozt Min. display Capacity ct Min. display Capacity mom Min. display Capacity dwt Min. display Capacity GN Min. display Capacity tola Min. display Capacity tl (HG)** Min. display Capacity tl (HJ)** Min. display Capacity tl (T)** Min. display EJ-120 4.233 0.001 0.2646 0.0001 3.858 0.001 600.00 0.05 32.000 0.005 77.16 0.01 1851.8 0.2 10.288 0.001 3.1745 0.0005 3.2060 0.0005 3.2000 0.0005 EJ-200 7.408 0.001 0.4630 0.
12-3. Options EJ-02 EJ-03 EJ-07 EJ-08 EJ-11 EJ-12 EJ-13 USB interface RS-232C interface Underhook for EJ-3000 / EJ-4100 / EJ-6100 Underhook for EJ-1500 / EJ-2000 Breeze break Carrying case Density Determination Kit for EJ-120 / EJ-200 / EJ-300 / EJ-410 / EJ-610 12-4. Dimensions Min. 59 190 140 Min.
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