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High-Precision Tuning Fork Electronic Balance
S Ｊ － C Ｅ N S e r i e s
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
420002M11
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Summary of Contents for Vibra SJ-CEN Series
- Page 1 High-Precision Tuning Fork Electronic Balance S Ｊ － C Ｅ N S e r i e s 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 SJ-CEN Series electronic balance. This is a precision instrument equipped with exacting mechanisms in a compact body. The SJ-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) Measurement pan (one round or square pan) Round pan Square pan ・SJ-220CEN～620CEN:φ140mm... -
Page 5: Table Of Contents
CONTENTS PREFACE ............i 9. Calibrating the Balance ......31 Important Notice ..........ii 10. Operating the Balance with the Battery Bundled Items ..........iii ........33 CONTENTS ............ iv 11. Troubleshooting ......... 34 1. Precautions on the Use ......1 12. -
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 lay the AC adapter cable on the surface of the passage. • Somebody may trip on the cable, causing the balance to fall off, thereby causing injury 定格外禁止 Do Not Drop and/or damage to the balance. Do not touch the AC adapter or balance with wet hands.
- Page 8 Do not use the balance when [o-Err] (Overloaded) is displayed. • Take down the loaded sample immediately to prevent breakage or malfunction. 定格外禁止 Do Not Overload Do not use the balance in a location where it is subject to direct sunlight. •...
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Page 9: For More Precise Measurements
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,... - Page 10 1-2-2 Precautions on the Measuring Bench → Vibration/ If the balance is subjected to vibration during measurement, its indications will become unstable, thus preventing accurate measurement from being Shaking conducted. To avoid this situation, select a solid measuring bench that is less susceptible to vibration.
- Page 11 1-2-4 Precautions on the Main Unit of the Balance → Precautions A transparent dust cover, supplied for some models, may be statically on Use charged under low humidity conditions, which may cause unstable readinig. In such case, wipe the dust cover with a damp cloth or use a commercial antistatic agent.
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Page 12: Names Of Component Parts
2. Names of Component Parts 2.1 Main Unit Round-pan types (SJ-220CEN～620CEN) Square-pan types ( SJ-1200CEN～12KCEN) Measurement Liquid-crystal display (LCD) Level For checking the level of the balance Turn the adjusters until the bubble rests Operation keys in the center of the Front View (round-pan type) red circle. -
Page 13: 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 14: Names And Functions Of Operating Keys
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. -
Page 15: 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. Securing the exact level of the balance Turn the adjusters until the bubble rests in the center of the circle on the level. -
Page 16: Operation Check
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. Checking the display Check to see if the display has any missing indications or unlit parts. -
Page 17: Operation For Tare Subtraction
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. - Page 18 ☆ Weighing only the weight of an added sample Resetting the indication to zero Press the Zero/Tare key. The total weight of the sample loaded on the measurement pan is indicated as zero. Adding samples to be measured The balance indicates only the weight of an added sample.
- Page 19 When the read-out indicator is reset to zero or the tare is subtracted, the balance indicates zero this way: [ 0 ]. If the tare is subtracted, the indicator reads as follows: [NET]. * If the indication * If the tare is subtracted, deviates from the the balance indicates true zero point by...
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Page 20: 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 21: 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 22: Interface Section
☆ are the default factory settings. ☆ 1～ ☆ 5: default settings [81.S.u.]-[85.S.u.] Items marked ★ 3 20 [Pcs] 81.S.u. (pieces) Setup of units of ★ 4 IF measurement to ★ 5 00 Unit not set be displayed 85.S.u. 0 Disable Display of the Enable ( is the auxiliary scale interval.) - Page 23 ※ Set Values 1, 3, 6 of 71. o.c. SHALL NOT be selected when the lock switch is on and the balance is connected with a printer. Unstable weighing data shall not be used for printing, price calculation, invoicing nor data storage for legal transactions in accordance with Directive 2014/31/EU (NAWI)
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Page 24: 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 balance is not sealed. - Page 25 Example: To change the default factory settings to pound units use [82.S.u.] in the factory settings. (cont.) Pressing the key will reset the Pressing the [Set] key to restore measurement mode. measurement mode Pressing the [Function] key to change the units of Press the Function key.
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Page 26: 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 27 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 28: 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 29: 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 30 ☆ Key Points of the Prcedure ☆ While samples are being saved, the value indication disappears temporarily, and only the [M] mark flashes. If the balance is affected by wind or other vibrations during this process, the saving time may be prolonged. If [L-Err] appears briefly, it indicates one of the following states: The weight of the reference sample is insufficient.
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Page 31: 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 32 Selecting a function item Press the Function key. The display changes to the next item [Comparator Function]. Setting the comparator function Press the Zero/Tare key to set the value on the rightmost side to [1]. Comparator function operations Setting the judgement condition Press the Function key.
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Page 33: 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. Release the key when [L.SEt] is 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 34: Setting Up Limit Values By Inputting Values
8.3 Setting up Limit Values by Inputting Values Starting the comparator function Press and hold down the key. Release the key when [L.SEt] is displayed. The currently set lower-limit value flashes. Continuous pressing Key released Opening the value input screen Press the Zero/Tare key. - Page 35 Opening the value input screen Press the Zero/Tare key. Follow the same procedure as in “Step 2.” Setting the upper-limit value Follow the same procedure as described for the lower-limit value and enter the upper-limit value. 10 Saving the upper-limit value Press the Memory key.
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Page 36: Calibrating The Balance
9. Calibrating the Balance ※ Calibration is possible only when the balance is unsealed. 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. - Page 37 Calibrating the Balance (cont.) Calibrating the capacity point Load the calibration weight in the center of the balance. The display flashes, indicating that capacity point calibration is in progress. Terminating the span adjustment When the calibration of the capacity point is finished, the original measurement mode is restored.
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Page 38: Operating The Balance With The Battery
10. Operating the Balance with the Battery This function operates only when the balance is equipped with optional rechargeable battery pack. 10.1 Specifications • Built-in Nickel-Metal Hydride(NiMH) battery • Charging time: Approximately 12 hours • Drive time: Approximately 24 continuous hours •... -
Page 39: Troubleshooting
11. 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 on the display. adapter is connected(10). • The balance is subject to air currents or ... -
Page 40: Specifications
12. Specifications 12.1 Basic Specifications Model 220CEN 420CEN 620CEN 1200CEN 2200CEN 4200CEN 6200CEN 12KCEN Max [g] 1200 2200 4200 6200 12000 Min [g] 0.01 0.01 0.01 Max [ct] 1100 2100 3100 6000 11000 21000 Min [ct] Not available [ct] [ct] Measurable unit weight 0.01 0.01... -
Page 41: Capacities And Minimum Indications For Different Indication Units
(13) Options ..............RS232C output under weighing hook Relay contact output Internal battery drive 12.3 Capacities and Minimum Indications for Different Indication Units 220CEN 420CEN 620CEN 1200CEN 2200CEN 4200CEN 6200CEN 12KCEN 1200 2200 4200 6200 12000 gram (g) 0.01 0.01 0.01 0.01 0.01... -
Page 42: Conversion Table Of Units
13. Conversion Table of Units penny Unit gram carat ounce pound troy ounce 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 1 pund 453.59237 2267.96185 14.58333 291.66667 1 troy ounce 31.10348 155.51738 1.09714...
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