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High-Precision Tuning Fork Electronic Balance
ＡＪ－CＥN／ＡＪＨ－CＥN Series
（2200〜12K）
Operation
•
To ensure safe and proper use of the balance, please read this
manual carefully.
•
After reading this manual, store it in a safe place near the balance, so
you can review it as needed.
SHINKO DENSHI CO., LTD.
Manual
IMPORTANT
310003M51
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Table of Contents
Related Manuals for Vibra AJ CEN Series
Summary of Contents for Vibra AJ CEN Series
- Page 1 High-Precision Tuning Fork Electronic Balance ＡＪ－CＥN／ＡＪＨ－CＥN Series （2200〜12K） Manual Operation IMPORTANT • To ensure safe and proper use of the balance, please read this manual carefully. • After reading this manual, store it in a safe place near the balance, so you can review it as needed.
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Page 2: Preface
PREFACE Thank you for purchasing an AJ-CEN/AJH-CEN Series electronic balance. This is a precision instrument equipped with exacting mechanisms in a compact body. The AJ-CEN/AJH-CEN series provides enhanced functions, including a counting mode for stock control of parts, a percentage mode for comparative measurements given in percentages, and a comparator function for measuring constant quantities by consecutive weighings. -
Page 3: Important Notice
Important Notice ・It should be known that this product contains potential danger. And so please be sure to observe this document when installing, operating or servicing this product. ・SHINKO DENSHI CO., LTD. will not take any responsibility for any injury or damage caused by the non-observance of this document or misuse or unauthorized modification of this product. -
Page 4: Bundled Items
Bundled Items Before using the balance, please check that the following items have been included in the package. Should you find any missing parts, please contact your local dealer. (1) Main unit of balance (2) Pan base (3) Measurement pan (180mm×160mm) (4) AC adapter and plug (5) DIN5P plug set... -
Page 5: Table Of Contents
CONTENTS PREFACE ............i 8. Comparator Function ......24 8.1 Comparator function Setup ..25 Important Notice ..........ii 8.2 Setup of Limit Values by Actual Bundled Items ..........iii Quantity Loads ......26 8.3 Setting up Limit Values by CONTENTS ........... -
Page 6: Precautions On The Use
1. Precautions on the Use 1.1 Warnings regarding Use • This Section "Precautions Relating to Use" sets forth precautionary notes that the user should observe in order to prevent physical injury to the user and/or damage to property. • The nature of problems that may result in the event of improper operation, and consequential effects on the quality and performance of the balance, are indicated under the two categories of "Caution"... - Page 7 Do not place the balance on an unstable base or use the balance in a location where it may be subjected to shock. • The loaded sample may fall off the measurement pan. 定格外禁止 Do Not Use • Accurate measurement may be rendered impossible.
- Page 8 Do not use the balance in a location were it may be subjected to abrupt changes in ambient temperature or humidity. • Accurate measurement may not be obtained. • Optimum operations occur when ambient 定格外禁止 Do Not Use temperatures range from 10C to 30C, and less than 80% relative humidity.
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Page 9: For More Precise Measurements
1.2 For More Precise Measurements To be able to conduct more precise measurements, it is necessary to minimize the factors that contribute to measurement errors. There are a great variety of such error-inducting factors, which can be linked to machine error and performance of the balance itself, as well as the properties and condition of samples being measured, and the measuring environment (e.g., vibration, temperature/humidity). - Page 10 1-2-3 Precautions on the Samples 3.1 Static Electricity • Generally speaking, objects made of synthetic resin and glass have high electric insulating properties and, therefore, are apt to be electrically charged. Measuring a charged sample as is may cause unstable indications, with resultant poor reproducibility of the results.
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Page 11: Names Of Component Parts
2. Names of Component Parts 2.1 Main Unit Measurement Front View Level Liquid-crystal display (LCD) For checking the level of the balance Turn the adjusters until the bubble rests Operation keys in the center of the red circle. Rear view RS232C connector AC adapter... -
Page 12: Lcd Indicators And Operating Keys
2.2 LCD Indicators and Operating Keys 2.2.1 Symbols Displayed Display Description Grams 0 Zero point Tare being subtracted ○ Indication of stable balance (If the light is off, the balance is unstable.) Balance powered up (Lights up when the power is turned off) or data transmitted Counting mode Percentage mode Indication of judgement result (HI/OK/LO) when the comparator function is... - Page 13 2.2.2 Names and Functions of Operating Keys Operating Key Function Key to turn on/off the unit power On/off key [Brief press] initiates print or output. [Brief press] saves the settings of the number of pieces Memory key or percentages (%), or the limit value when using the comparator function.
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Page 14: Basic Operations
3. Basic Operations 3.1 Installation First, mount the pan base on the Positioning the measurement pan main unit of the balance and place the measurement pan on top of it. Turn the adjusters until the bubble Securing the exact level of the balance rests in the center of the red circle on the level. -
Page 15: Operation Check
3.2 Operation Check Turning on the power When the balance has the AC adapter connected, it displays [ ]. Pressing the On/Off The display section lights up, and the balance is ready for operation. - Page 16 3.3 Checksum check The CRC16 Checksum (Software identification) can be checked by following steps to verify the software of the scale. Press the Function key while 1 Set to the function2 mode. pressing the Zero/Tare key. Release the fingers when “Func2” is displayed.
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Page 17: Operation For Tare Subtraction
3.4 Operation for Tare Subtraction Place the tare (container) on the balance. As you place the tare, the balance indicates its weight. Reset read-out indication to zero. Press the Zero/Tare key. The tare is subtracted and the balance indicates zero. The balance will now indicate only Load the sample to be weighed. - Page 18 ☆ Key Points of the Procedure ☆ The following applies equally to all the measurement modes for weight measurement, counting, and percentages. After the balance is switched off, there is still enough current to display [ ]. This indicates that the AC adapter is connected to an electrical outlet, but that the balance is turned off.
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Page 19: Functions
4. Functions 4.1 Setup and Checking of Functions Press and hold down the Invoking the function Function key until the indicator changes to “Func,” then release the key. The function setup mode is activated, and the first item, Key released b.G. -
Page 20: Description Of Functions
4.2 Description of Functions Item Set Value Description 0 Disable 1. b.G. Bar graph display ☆1 Enable ☆0 Disable 2.SEL Comparator function 1 Enable Always judge (judges even when the balance is ☆1 unstable) Judgement 21.Co. condition Judge only when the balance is stable (does not judge if the balance is unstable) Ranges beyond +5 graduation is judged (ranges +5 graduation or below, including negative ranges, are... -
Page 21: Interface Section
★ 81.S.u. 3 20 [Pcs] (pieces) Setup of units of ★ measurement to 4 IF [%] ※ ★ be displayed 85.S.u. 5 00 Unit not set 0 Disable Display of the Enable ( is the auxiliary scale interval.) auxiliary scale 9. -
Page 22: Switching Function For Units Of Measurement
5. Switching Function for Units of Measurement Pressing the Function key allows the user to switch the unit of measurement to [g], [ct], [%], and so Up to five different units can be registered for use only when the function key is properly set on a balance for which the lock switch is off. - Page 23 Pressing the [Set] key to restore measurement mode. Pressing the key will reset the measurement mode Pressing the [Function] key to change the units of Press the Function key. measurement Each press of the key changes the units of measurement to be displayed, as [g] ...
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Page 24: Counting Pieces
6. Counting Pieces To implement piece-counting, the specified samples are loaded on the balance, and their average unit weight (hereinafter, simply the “unit weight”) is entered and saved. The procedure for saving unit weights is called sampling. The counting procedure consists of loading articles that have already been sampled on to the balance. The number of pieces is then calculated by dividing the total weight of the loaded articles by the unit weight saved in memory. - Page 25 Changing the sampling number, if necessary. If samples to be counted widely deviate in weight, or a higher measure of How to change the value accuracy is desired, it is recommended that users change the sampling number to a larger value. Press the Zero/Tare key.
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Page 26: Increasing The Counting Accuracy (Memory Update Method)
6.2 Increasing the Counting Accuracy (Memory Update Method) ※This procedure is the same as the sampling procedure described on the previous page up, to the point at which the sampling number is changed. Loading samples Load the number of samples displayed. Count the samples precisely and load them on to the center of the measurement pan. -
Page 27: Measuring Percentage
7. Measuring Percentage The percentage measurement function operates by weighing an actual sample, selected as the reference, and saving its weight as the reference value and indexing it as 100%. When a measurement sample loaded on the balance is lighter or heavier than the reference, its weight is indicated as a percentage (%) value relative to the reference weight. -
Page 28: Comparator Function
8. Comparator Function The comparator function judges measurements according to a limit value saved in the balance. The function shows the judgement result by displaying the [ ] mark as either HI (excessive), OK (appropriate), or LO (insufficient). This function is very useful when discriminating between conforming and nonconforming articles. -
Page 29: Comparator Function Setup
8.1 Comparator function Setup Invoking the function Press and hold down the Function key. Release the key when [Func] is displayed. The display changes to the function setup and the first item is displayed. released Continuous pressing Selecting a function item Press the Function key. -
Page 30: Setup Of Limit Values By Actual Quantity Loads
8.2 Setup of Limit Values by Actual Quantity Loads Starting the comparator function Press and hold down the key. SEt ] is Release the key when [L. displayed. The currently set lower-limit value flashes. Continuous pressing Key released Loading the sample for the lower-limit value Load the sample of the lower-limit value on the measurement pan. - Page 31 Entering a value Press the Zero/Tare key again. Pressing the key repeatedly changes the flashing value until the desired number is entered. Selecting a digit Press the Function key. The flashing moves to the digit on the immediate left. Each time the key is pressed, the flashing digit moves one position left.
- Page 32 ☆ Key Points of the Procedure ☆ The limit values you have set can be checked each time you press the Set key. SEt ], and the upper-limit value after The balance displays the lower-limit value after showing [L. showing [H. SEt ].
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Page 33: Calibrating The Balance
9. Calibrating the Balance Since electronic balances are affected by gravity gravitational acceleration, they produce different values in various locations. Therefore, before use, balances must be calibrated at the location where they are installed. Calibration is also required after long periods without use, or if a balance begins to produce inaccurate values. -
Page 34: Calibration Of Ajh-Cen Series30
☆ Key Points of the Procedure ☆ Pressing the Function key in Step 2 interrupts the span adjustment and returns you to the original measurement mode. The calibration weight used for span adjustment should be heavier than 50% of the capacity of the balance. - Page 35 Calibration of weighing capacity point Slowly and fully turn the calibration knob in the direction of [Calibration]. Calibration The balance assumes the state where the calibration weight is loaded on the measurement pan. The display starts flashing and the balance automatically adjusts the weighing capacity point.
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Page 36: Glp-Compliant Print
9.3 GLP-compliant print At calibration, the AJH-CEN Series enables printing in a format compliant with GLP. Set the function to the GLP print support ([0.GLP 1]) side, then connect the balance to a printer or other equipment. When calibration is complete, the balance prints out the format illustrated below. Since only items are printed, the data should be entered manually by the person who conducted calibration. -
Page 37: Input/Output Functions
10. Input/output functions 10.1 Terminal Numbers and Functions Terminal Number Signal Input/output Function & remarks ※ EXT.TARE Input External tare subtraction Output HIGH (when balance is powered-up) Input Receiving data Output Transmitting data — Signal ground RS232C connector (DIN 5-pin female): Rear ※Tare subtraction (zero adjustment) is possible by connecting an external tare subtraction input and a signal ground, through contacts or a transistor switch. -
Page 38: Connection Between Balances And Personal Computers
10.2 Connection between Balances and Personal Computers Sample connection with D-SUB9P Balance D-SUB9P DIN5P Sample connection with D-SUB25P Balance D-SUB25P DIN5P... -
Page 39: Interface Specifications
10.3 Interface Specifications Transmission system Serial transmission with start-stop synchronization Transmission rates 1200/2400/4800/9600 bps. Transmission codes ASCII codes (8-bit) Signal levels Compliant with EIA RS-232C +5 to +15 V HIGH level (Data logic 0) -5 to -15 V LOW level (Data logic 1) One-character bit configuration Start bit: 1 bit Data bit:... - Page 40 10.4.2 Polarities (P1: one character) Code Description When data is zero or positive When data is negative (SP) When data is zero or positive 10.4.3 Numeric data Six-digit numeric format/Six-digit numeric format(ASCII): (D1–D7: seven characters) Seven-digit numeric format/Seven-digit numeric format(ASCII): (D1–D8: eight characters) Six-digit numeric format/Six-digit numeric format(ASCII) when A.PrF.
- Page 41 For six/seven-digit numeric format(ASCII): Code Meaning Balance indicators (SP) gram carat ounce pound troy ounce pennyweight tael (Hong Kong) tael (Singapore, Malaysia) (upper right) tael (Taiwan) (lower right) momme tola (SP) percentage pieces 10.4.5 Result of judgment when operating the balance with the comparator function (S1: one character) For six/seven-digit numeric format(available only when the lock switch is off): Code...
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Page 42: Input Commands
10.5 Input Commands Users can control the balance remotely by transmitting commands from an external device. Two types of control commands are available: Instruction for tare subtraction Setup of output control 10.5.1 Command Transmission Method A command is transmitted to the balance from an external device. Since the data flow (transmission and reception) is stored by a full-duplex system, commands can be transmitted regardless of their data-transmission timing. - Page 43 Setup of output control Code Description Ｏ Stop output Ｏ Output continuous at all times Ｏ Output continuous if stable (stop output if unstable) Ｏ Outputs once by pressing Memory key (irrespective of whether stable). Ｏ Outputs once if stable. Outputs if the balance is stable when a sample is loaded after the preceding sample has been removed and the balance indicated zero, or less.
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Page 44: Operating The Balance With The Battery
11. Operating the Balance with the Battery This function operates only when the balance is equipped with optional rechargeable battery pack. 11.1 Specifications • Built-in Nickel-Metal Hydride(NiMH) battery • Charging time: Approximately 12 hours • Drive time: Approximately 24 continuous hours •... -
Page 45: Troubleshooting
12. Troubleshooting ※ The numbers in ( ) indicate reference pages Symptom Cause Possible remediation Check that the AC • The AC adapter is not connected. There is no indication adapter is connected on the display. (10). • The balance is subject to air currents or ... -
Page 46: Specifications
13. Specifications 13.1 Basic Specifications AJH- AJH- AJH- Model 2200CEN 3200CEN 4200CEN 6200CEN 8200CEN 12KCEN 2200CEN 3200CEN 4200CEN Max (g) 2200 3200 4200 6200 8200 12000 2200 3200 4200 Min (g) e (g) d (g) 0.01 0.01 0.01 0.01 0.01 0.01 0.01 Accuracy Class... -
Page 47: Capacities And Minimum Indications For Different Indication Units
13.3 Capacities and Minimum Indications for Different Indication Units Model 2200CEN 3200CEN 4200CEN / AJH- / AJH- / AJH- 6200CEN 8200CEN 12KCEN Unit_of 2200CEN 3200CEN 4200CEN Measurement displayed 2200 3200 4200 6200 8200 12000 (gram) 0.01 0.01 0.01 0.01 Class 11000 16000 21000... -
Page 48: Conversion Table Of Units
14. Conversion Table of Units unit gram carat ounce pound troy ounce penny weight 1 gram 0.03527 0.00220 0.03215 0.64301 1 carat 0.00705 0.00044 0.00643 0.12860 1 ounce 28.34952 141.74762 0.06250 0.91146 18.22917 453.5923 1 pound 2267.96185 14.58333 291.66667 1 troy ounce 31.10348 155.51738 1.09714 0.06857...
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