Instruction Manual
43 Pages
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1WMPD4000465B
© 2011 A&D Company, Limited. 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, Limited.
The contents of this manual and the specifications of the instrument covered by this manual are subject to change for improvement without notice.
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 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 the equipment is operated in a commercial environment. If this unit is operated in a residential area it may cause some interference and under these circumstances the user would be required to take, at his own expense, whatever measures are necessary to eliminate the interference. (FCC = Federal Communications Commission in the U.S.A.) Note Under some ambient electromagnetic conditions, this equipment may be affected by the electromagnetic interference.
This is a hazard alert mark.
CONTENTS 1. INTRODUCTION ...3 2. UNPACKING ...3 3. PART NAMES AND FUNCTIONS ...4 4. SETTING UP ...5 4-1. Setting up your balance ...5 4-2. Power source...5
5. OPERATION...6 5-1. Turning the power ON and OFF...6 5-2. LCD backlight ...6 5-3. Units ...7 5-4. Selecting a weighing unit ...8 5-5. Basic operation ...8 5-6. Weighing range for the EW-i series ...9 5-7. Counting mode (pcs) ...10 5-8. Percent mode (%)...11
6. COMPARATOR ...12 6-1. Setting example ...12
7. CALIBRATION ...14 7-1. Calibration using a weight...14 7-2. Gravity acceleration correction ...16
8. FUNCTIONS...17 8-1. Key operation ...17 8-2. Entering the function setting mode ...17 8-3. Setting example ...18 8-4. Storing weighing units...19 8-5. Function list ...20
9. RS-232C SERIAL INTERFACE...22 9-1. Interface specifications ...22 9-2. Data format ...23 9-3. Data output mode ...23 9-4. Command mode ...24
10. ID NUMBER AND GLP...25 10-1. Setting the ID number...25 10-2. GLP report ...26 1
11. OPTIONS...30 11-1. OP-04 Comparator relay output and buzzer ...30 11-2. OP-07 Underhook assembly ...31 11-3. OP-09 Rechargeable battery pack (Ni-MH) ...32 11-4. OP-12 Carrying case ...32
12. MAINTENANCE ...33 12-1. Notes on maintenance...33 12-2. Error codes ...33
13. SPECIFICATIONS ...35 13-1. EK-i series ...35 13-2. EW-i series ...36 13-3. Other weighing units ...37 13-4. Dimensions ...38
GRAVITY ACCELERATION MAP ...39
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1. INTRODUCTION This manual describes how this balance works and how to get the most out of it in terms of performance. The EK-i and EW-i series balances have the following features: The EK-i series are high resolution type electronic balances having a resolution of 1/6,000 ~ 1/60,000. The EW-i series are triple range balances and each range has a resolution of 1/3,000. The balance has a counting function, % function and a comparator function. The backlight LCD will help with use in a dimly lighted place. The standard RS-232C serial interface can be connected to a printer or personal computer. Using the serial interface, Good Laboratory Practice (GLP) data can be output. The optional rechargeable battery pack (OP-09) is easy to install for cordless operation.
2. UNPACKING When unpacking, check whether all of the following items are included: Weighing pan
Weighing pan
Pan support
Main unit
Main unit
EW-150i EK-120i / EK-200i / EK-300i EK-410i / EK-610i
EW-1500i / EW-12Ki EK-600i / EK-1200i / EK-2000i EK-3000i / EK-6000i / EK-12Ki EK-4100i / EK-6100i
AC adapter
Instruction Manual
Please confirm that the AC adapter is correct for your local voltage and receptacle type. 3
3. PART NAMES AND FUNCTIONS
Turns the power on or off.
Held down to enter the function setting mode. Weighing mode (EW-i only): Changes the weighing range (when rng 0 is selected). pcs mode: Enters the sample unit weight storing mode. % mode: Enters the 100% weight storing mode. 4
Outputs the weight data to a printer or computer, or enters a unit weight, 100% weight or other setting values to the balance. Switches the weighing unit (the weighing mode).
Clears the display to zero.
4. SETTING UP 4-1. Setting up your balance 1. Place the weighing pan on the main unit as shown on the previous page. 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. CALIBRATION”)
Balance location To measure correctly, to keep the balance in good condition, and to prevent hazards, observe the following:
Do not install the balance in locations that are subject to excessive dust, breezes, vibration, large temperature fluctuations, condensation, or that may have magnetic fields. Do not install the balance on a surface that is soft or that may cause the balance level to shift. Do not install the balance in direct sunshine. Do not install the balance near heaters or air conditioners. Do not use an unstable AC power source. Do not install the balance in a place where combustible or corrosive gases may exist. Allow the balance to reach equilibrium with the ambient temperature before use. Switch the power ON at least half an hour before use so that the balance can warm up. When the balance is installed for the first time, or the balance has been moved, carry out calibration as described in “7. CALIBRATION.”
4-2. Power source For the power source, the AC adapter or the rechargeable battery pack (OP-09: Optional item) is available.
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 EK/EW-i.
When using the rechargeable battery pack (OP-09) Insert the rechargeable battery pack into the main unit. The balance can be used continuously for about 9 hours using the battery pack.
If “Lb0” is displayed when using the battery pack, immediately stop using it, and recharge the battery pack or use the AC adapter. See “11-3 OP-09 Rechargeable battery pack”, for instructions to install and charge the battery pack. Be sure to charge the battery pack before using it for the first time.
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5. OPERATION 5-1. Turning 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 units available will be displayed.) The display turns off except for a weighing unit and the decimal point. The balance waits for the weight data to become stable, and zero will be displayed with the ZERO mark (power-on zero). The range for power-on zero is within ±10% of the weighing capacity around the calibrated zero point. If the power is switched ON while there is a load beyond this range, the balance will be tared to zero and the NET mark and the ZERO mark turn on. 2. Pressing the
ON/OFF
key again, and the power will be switched OFF.
Auto-power off function It is possible to have the power automatically switched OFF, if zero is displayed for approximately 5 minutes. See “8-5. Function list” and set the function “poff”.
5-2. LCD backlight The LCD backlight will turn on when the weight data changes more than 4 display digits or any key operation is done. When the weight data becomes and stays stable for some moment, the backlight will automatically turn off. There is also a setting that the backlight is always on or off. For details, see the function setting “ltUp” of “Function list”.
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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: Pound
Ounce (avoir) Percent mode
Troy ounce
Counting mode Metric carat Gram
Momme Pennyweight Tael
Grain
Among the units, those available for the user have been set at the factory before shipping. The unit can be selected in the function setting mode. The order of the units available is the same as above, while skipping the units that are not available. Some units are not available for higher or lower capacity models. For details, see “13. SPECIFICATIONS”
Note It is possible to store only the units that will be actually used from the units available. It is also possible to specify the display unit that will be shown first when the power is switched ON. For details, see “8-4. Storing weighing units”. Conversion table Units oz lb ozt ct mom dwt GN tl
Name Ounce (avoir) Pound (UK) Troy ounce Metric carat momme Pennyweight Grain (UK) tael (Hong Kong general, Singapore)
Note The unit “tl (tael)” is for special versions only.
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Conversion to gram 28.349523125 g 453.59237 g 31.1034768 g 0.2 g 3.75 g 1.55517384 g 0.06479891 g 37.7994 g
5-4. Selecting a weighing unit Press the
MODE
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 Stability mark
5-5. Basic operation 1. Select a weighing unit. 2. When the display doesn’t show zero, press the RE-ZERO key to set the display to zero.
Container
3. When using a tare (container), place the container on the weighing pan, and press the RE-ZERO key to set the display to zero. 4. Place the object to be weighed on the pan or in the container. Wait for the stability mark ( { ) to be displayed and read the value.
Weighing pan
NET ZERO
0.0 Object to be weighed
5. Remove the object from the pan.
Note The RE-ZERO key will zero the balance if the weight is within ±2% of the weighing capacity around the power-on zero point. The ZERO mark turns on. When the weight exceeds +2% of the weighing capacity, it will be subtracted to zero as a tare weight. In this case the ZERO and NET marks turn on.
NET
150.3 Stability mark
Precautions during operation Make sure that the stability mark is on whenever reading or storing a value. Do not press the keys with a sharp object such as a pencil. Do not apply a shock or a load to the pan that is beyond the weighing capacity. Keep the balance free from foreign objects such as dust or liquid. Calibrate the balance periodically to keep weighing accuracy. (See ”7. CALIBRATION”.)
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5-6. Weighing range for the EW-i series The EW-i series have three weighing ranges, and the display shows which range the weight value belongs to with the mark R1, R2 or R3. There is a function setting to select how the weighing range changes. Select from automatic range (rng 1), manual range (rng 0) or fixed range (rng 2 to 4).
Operation Function setting
Operation Automatic range When the weight value exceeds the maximum value of the range, the weighing range changes automatically from a lower to a higher weighing range.
rng 1
When there is nothing on the weighing pan and the display shows zero with the ZERO mark, the weighing range changes from a higher to the lowest range. When the RE-ZERO key is pressed in a higher range, the balance will be tared to zero and the weighing range changes to the lowest range. Manual range Press the SAMPLE key when the display shows a weight value (neither counting nor % display). The weighing range changes to a higher range at any load. Press the SAMPLE key to change from a higher to the lowest range, when there is nothing on the weighing pan and the display shows zero with the ZERO mark.
rng 0
rng 2 to 4
When the RE-ZERO key is pressed in a higher range, the balance will be tared to zero and the weighing range changes to the lowest range. If the weight of the object is not more than 2% of the weighing capacity, the RE-ZERO key doesn’t tare, but zeroes the balance and the weighing range doesn’t change. Press the SAMPLE key to change the weighing range at zero display. Fixed range (*) The weighing range is fixed. Set the function to the weighing range according to the purpose.
( )
* This function will not be available for some of legally certified models.
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5-7. Counting mode (pcs) Determines the number of objects in a sample. Calculates the reading, using the basic sample unit weight, and determines how many pieces are contained. Selecting the counting mode 1. Press the MODE 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. It may be set to 5, 10, 25, 50, or 100.
Switches the number of samples.
4. Place a tare container on the weighing pan, and press the RE-ZERO key. Confirm that the right side of the number of samples shows zero.
25 Container
5. Place the number of samples specified on the pan. In this example, 25 pieces. 6. Press the PRINT key to calculate and store the unit weight. Remove the sample. The balance is set to count objects with this unit weight. When a unit weight is too light to store, the display shows lo for a moment and returns to the former display. When the sample weight is light and the counting error could become large, the balance will prompt you to use a larger number of samples. Place the displayed number of samples on the pan and press the PRINT key to calculate and store the unit weight. See also “Sample quantity notice” and “Unit weight error” of “12-2. Error codes”.
Weighing pan
Confirm the display
ZERO
25 0 Samples (25 pcs)
To store
25
Counting the objects 7. Place the objects to be counted on the pan.
Counting mode using the ACAI function ACAITM (Automatic Counting Accuracy Improvement) is a function that improves the accuracy of the unit weight by increasing the number of samples as the counting process proceeds. 10
ACAI mark ACAI
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8. After setting the unit weight at step 6, add a few more samples on the pan. Then, the ACAI mark will turn on. (Add more than three pieces. The mark will not turn on for the number of samples beyond the ACAI range.) 9. The ACAI mark will blink and the balance re-calculates the unit weight. Do not touch the balance or samples on the pan until the ACAI mark turns off. 10. Counting accuracy is improved when the ACAI mark 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.
5-8. Percent mode (%) Displays the weighing value in percentage compared to the reference (100%) weight. Selecting the percent mode 1. Press the MODE key to select %. (%:percent)
0.0
Storing the reference (100%) weight 2. Press the SAMPLE key to enter the reference weight storing mode. 3. Press the
RE-ZERO
%
100 -
%
100 0
%
key to display 100 0%.
ZERO
4. Place the sample to be set as the reference weight on the pan.
5. Press the PRINT key to store the reference weight. Remove the sample. When the reference weight is too light, the display shows lo for a moment and returns to the former display.
Reading the percentage 6. Place the object to be compared to the reference weight on the pan. The displayed percentage is based on 100% of the reference weight. 11
Weighing pan
Sample corresponding to the 100% weight To store
100.0
%
Object to be compared
75.8
%
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). Compares all data except those near zero (all data greater than +4d or less than -4d). Compares stable data except those near zero (stable data greater than +4d or less than -4d). d = the smallest display division e.g.: 4d=four display divisions
The upper limit and lower limit numerical values are common to each of the weighing, counting and percent mode. An example for the EK-1200i/2000i/3000i is as follows. Upper limit value “001010”: “101.0g” “1010pcs” “101.0%” Lower limit value “000990”: “99.0g” “990pcs” “99.0%” Press and hold
6-1. Setting example This example will be “Compares plus data except those near zero”. Selecting a comparison mode
func
1. Press and hold the SAMPLE key to display func . (If the comparison mode is already set, press the SAMPLE key to go to “Entering the upper and lower limit values”.)
poff 0
2. Press the PRINT poff X .
Press several times
key, then the balance displays
3. Press the SAMPLE Cp X.
key several times to display
4. Press the RE-ZERO Cp 3.
key several times to display
5. Press the PRINT key to store the settings. Cp Hi appears after end .
Cp
0 Press several times
Cp
3 To store
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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
key
To select the digit blinking to change.
RE-ZERO
key
To set the value of the digit selected. Hold down the key to switch the sign “+” and “-“. (“N” designates a negative value.)
key
To store the value and proceed to the next step.
MODE
key
To cancel the value and proceed to the next step.
7. With Cp lo displayed, press the PRINT key. Enter the lower limit value using the following keys. SAMPLE
key
Cp Hi HI
000000 Set using the relevant keys HI
001234 To store
Cp lo
To select the digit blinking to change. LO
RE-ZERO
key
To set the value of the digit selected. Hold down the key to switch the sign “+” and “-“ (see step 6).
key
To store the value and proceed to the next step.
MODE
key
To cancel the value and proceed to the next step.
8. Press the PRINT end .
key.
Unit
appears after
000000 Set using the relevant keys LO
001230 To store
end Unit
9. Press the mode.
MODE
key to return to the weighing Returns to the weighing mode
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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. When the ambient environment has changed. For regular calibration.
7-1. Calibration using a weight Prepare a calibration weight (optional) before start. 1. Warm up the balance for at least half an hour with nothing on the pan. 2. Press and hold the calibration (CAL) switch until Cal appears, and release the switch. 3. The balance displays
Cal 0
Press and hold the CAL switch.
Cal Release the CAL switch.
.
To change the calibration weight value, proceed to step 4.
Cal 0
To use the calibration weight value in the balance memory, proceed to step 5. 4. Press the SAMPLE key. The display shows the calibration weight value in “gram” that is stored in the balance. Use the following keys to change the value. SAMPLE
key
To select the digit blinking to change.
RE-ZERO
key
To set the value of the digit selected.
key
To store the value and return to step 3.
MODE
key
To cancel the value and return to step 3.
Use a calibration weight of more than 2/3 of the capacity (of the highest range for EW- i series).
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01200.0 Set the weight using the relevant keys.
Cal 0
5. At step 3, pressing the PRINT key weighs the zero-point value. Do not touch the pan during weighing. When the zero calibration is completed, the display shows the calibration weight value.
Weighing pan
With nothing on the pan
To perform the zero calibration only and finish the procedure, press the MODE key.
To store
Cal 0 1000.0 Calibration weight 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.
To store
1000.0 7.
end appears. Remove the weight from the pan, and press the CAL switch or MODE key to return to the weighing mode.
end
Note The value set in step 4 is stored in memory even after the power is switched off. If the balance is to be moved to other places, set the gravity acceleration value of the area where the calibration using a weight is to be done, and calibrate the balance according to the procedure above. See the next section to set the value.
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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.
Note Gravity acceleration correction is not required when the balance is calibrated using a calibration weight at the place where the balance is to be used.
1. Press and hold the calibration (CAL) switch until appears, and release the switch. 2. The balance displays
Cal 0
Cal
Cal
.
3. Press the RE-ZERO key. The display shows the gravity acceleration value stored in the balance. Use the following keys to change the value. SAMPLE
key
To select the digit blinking to change.
RE-ZERO
key
To set the value of the digit selected.
key
To store the value and return to step 2.
MODE
key
To cancel the value and return to step 2.
4. After setting the value, press the Cal 0 is displayed again.
Press and hold the CAL switch.
key.
Release the CAL switch.
Cal 0
9.7980 Set the value using the relevant keys. To store
Cal 0
5. If it is necessary to calibrate the balance using a calibration weight, go to step 4 of 7-1. To finish the setting, press MODE key. 6.
end appears and the balance returns to the weighing mode.
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Returns to the weighing mode
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. Entering the function setting mode In the weighing mode, press and hold the SAMPLE key to enter the function setting mode and display func . Each time the SAMPLE key is pressed, the class appears one after another. Once the class is selected, the set items are available for selection. (See “Function list”.)
Press and hold
func Each pressing switches the class
Cp Hi • • • Set using the relevant keys
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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. Cp Hi appears after end .
Each pressing switches the parameter
aCai 0 To store
end 7. Press the mode.
MODE
key to return to the weighing
Cp Hi Returns to the weighing mode
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