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KERN ADJ 120, Service Manual

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KERN ADJ 120 Service Manual Download Page 28

28 

 

ADJ-SH-e-1910 

3 sec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Add a 50g (class E2) weight on the center of the 
weighing pan. 150g in total. 

 

 

 

 

 

 

 

 

 

 

 

 

After a few seconds the screen shows 0.0000g. 
Linearity calibration is completed and the balance 
returns to normal weighing mode. 

 

 

 

10.3  External weight calibration 

10.3.1 

Factory External Weight Calibration 

Before calibration, please make sure you have preheated the balance for 
30 minutes and adjusted the level. 

 

Summary of Contents for ADJ 120

Page 1: ...ohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com Servicemanual Analytical balance KERN ADJ Version 1 0 09 2019 GB ADJ SA e 1910 Import r Impex Produkter AS Gamle Drammens...

Page 2: ...onnel training 10 6 Transport and storage 10 6 1 Testing upon acceptance 10 6 2 Packaging return transport 10 7 Unpacking Setup and Commissioning 12 7 1 Installation Site Location of Use 12 7 2 Unpack...

Page 3: ...minutes and adjusted the level 28 10 3 2 User ExternalWeightCalibration user modeC3 0 30 11 Adjust theCornerError 31 11 1 Corner Error Inspection 31 12 Adjustment of zero count and full capability co...

Page 4: ...ication will result in a loss of the type approval After successful repair the balance will have to be reverified before it can be used again in a statutorily regulated field Detailed instructions abo...

Page 5: ...ADJ SH e 1910 5 3 Device overview 3 1 Components...

Page 6: ...Turn on off Exit menu CALkey Adjustment TAREkey Taring Zeroing Save setting Pos Designation 1 Glass windshield 2 Interface RS 232 3 Weighing pan 4 Bubble level 5 Display 6 Keyboard 7 Foot screws 8 Han...

Page 7: ...ver weighing unit Selecting an application MENUkey How to save the reference Switch on off background illumination of display keep the button pressed for a long time PRINTkey Change setting in the men...

Page 8: ...isplay Display Description Stabilitydisplay The balance is in stand by mode g Weighing unit Gram ct Weighing unit Carat lb Weighing unit Pound oz Weighing unit Ounce Pcs Application parts counting App...

Page 9: ...pan This may damage the measuring system Impacts and overloading exceeding the stated maximum load max of the balance minus a possibly existing tare load must be strictly avoided Balance may be damage...

Page 10: ...cautions 5 1 Pay attention to the instructions in the Operation Manual Carefully read this operation manual before setup and commissioning even if you are already familiar with KERN balances 5 2 Perso...

Page 11: ...ADJ SH e 1910 11 Secure all parts against shifting and damage as depicted...

Page 12: ...ainst direct draughts due to open windows and doors Avoid jarring during weighing Protect the balance against high humidity vapours and dust Do not expose the device to extreme dampness for longer per...

Page 13: ...s adapter Operating instructions Prior to any installation and assembly works the balance must be separated from the mains supply Install the balance at the intended workplace The right place is decis...

Page 14: ...the information on the instrument sticker matches the local mains voltage Only use KERN original mains adapter Using other makes requires consent by KERN Important Prior to commissioning check the ma...

Page 15: ...ve reached the operating temperature see warming up time chap 1 During this warming up time the balance must be connected to the power supply mains accumulator or battery The accuracy of the balance d...

Page 16: ...first menu item C1 showing the current setting will be displayed 2 Select menu items Press the TARE key to select the individual menu items showing the current settings one by one 3 Change settings Pr...

Page 17: ...nu see step 4 or 5 4 How to save settings and to exit the menu Press the ON OFF key SAVE will be displayed Any changes carried out are stored by pressing the TARE key The balance returns automatically...

Page 18: ...C3 0 No Zerot Tracking C3 1 1D Zero point Tracking C3 2 2D Zero point Tracking C3 3 3D Zero point Tracking C3 4 4D Zero point Tracking C3 5 5D Zero point Tracking C3 6 Not documented Baud rate C4 0 1...

Page 19: ...atic internal adjustment interval only ADJ models C7 2 4 hours C7 3 6 hours C7 4 8 hours Filter C8 0 Low interference degree C8 1 Medium interference degree C8 2 High interference degree C8 3 Not docu...

Page 20: ...environment temperature To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation Observe stable environmental conditions A warming up time...

Page 21: ...ADJ SH e 1910 21 9 2 Procedure...

Page 22: ...adjustment procedure 9 3 Manual initiation of internal adjustment Menu setting C1 2 see chapter Fehler Verweisquelle konnte nicht gefunden werden Execution Press CAL button in the weighing mode The ad...

Page 23: ...g error message will be displayed CAL NO repeat the adjustment procedure 10 Linearity calibration 10 1 Check count value Press ON OFF to shut down the scale Press CAL and the screen displays 1 Press T...

Page 24: ...24 ADJ SH e 1910 Press ON OF the screen displays 8888888 Press TARE and the screen displays 200 0000 or 120 0000 Press TARE and the screen displays 1 112111 or 1 1612111...

Page 25: ...E2 in the center of the weighing pan respectively read and record the count value The count value range of the balance is shown below Zero point 100g 200g 350 450 7800 7950 15250 15550 Exit the count...

Page 26: ...26 ADJ SH e 1910 Press CAL and the screen displays 1 Press TARE and the screen displays 2 Press CAL and TARE by turns until the screen displays 8 Press ON OFF the screen displays 8888888...

Page 27: ...ys Lnr in and Lin successively at this time the balance goes through zero point correction Put a 50 g class E2 standard weight press TARE and the screen displays Lin 100 Remove the 50g weight and load...

Page 28: ...a few seconds the screen shows 0 0000g Linearity calibration is completed and the balance returns to normal weighing mode 10 3 External weight calibration 10 3 1 Factory External Weight Calibration Be...

Page 29: ...ion then carefully set the adjustment weight 100 g in the centre of the weighing plate and close the windshield door When the adjustment is successfully completed you will see the CAL up indication Re...

Page 30: ...screen displaysCAL100 Press TARE key and the screen displays CAL 200 only valid for balances whose capacity exceeds 200 grams Press TARE key until the corresponding range of the calibration point is...

Page 31: ...nstable displayed value of the balance faulty sensor or Main PCB or interference between the sensor and its peripheral devices b The count value of the balance falls outside the specification range c...

Page 32: ...oaded with weight on the four corners respectively Corner A Up Corner B Down Corner C Left Corner D Right C The corner error of the balance should not exceed 3D Please refer to the below table A Up C...

Page 33: ...cation range the four corners of the balance needs to be adjusted Remove the windshield of the balance Loosen the 3 M3 cross flat head screws and remove the windshield Install the weighing pan and wei...

Page 34: ...adjust screw at Position 1 with socket clockwise If the value is negative rotate the adjust screw at Position 1 counterclockwise Move the weight to the upper left corner G and record the displayed va...

Page 35: ...If it is a positive value rotate the adjust screw at Position 2 with socket clockwise If the value is negative rotate the adjust screw at Position 2 counterclockwise Repeat C F procedures until the co...

Page 36: ...be 7800 to 8000 If Full capability count value is not in this range an external resistor box must be connected at R25 Full capability count value will be within this range by the corresponding resisto...

Page 37: ...ue to system default100 0000 After calibration readjust internal calibration weight correction value 14 Restoresystemsetting Reference If the balance setting is confusing it will be not working proper...

Page 38: ...e 1910 Therefore be careful before operating Press ON OFF to shut down the scale Press CAL and the screen displays 1 Press TARE and the screen displays 2 Press CAL and TARE by turns until the screen d...

Page 39: ...eted Display 1 112111 Switch on the balance Remark There are ten inner models of this type balance 200 180 120 60 H200 H180 H120 H60 600c 150c After selecting the corresponding model the balance will...

Page 40: ...to place the new keyboard on the response positions of the upper cover while replacing the keyboard 2 Unplug and replug the data cable 3 Cannot power on the balance displays shutdown icon after power...

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