Operating Instructions School Balance
Contents
1. 15 8 1 GEEANING E nn na aste reet tad rv diana udi eese E a hate 15 8 2 MAINTENANCE UPKEEP se ite e tt esee sete tese ces ede aee e Eee Edna d 15 8 3 DISPOSA UPC EUER Sa BEL Eule 15 TROUBLESHOOTING 2 cdactedetecccadapecdoadescledecavcndecuctewccddedecdacectacsee 16 0624 1 Technical data KERN EMB200 2 EMB600 2 EMB220 1 500 1 Readout 0 019 0 019 0 19 0 19 Weighing range 200g 600g 220g 500g Reproducibility 0 019 0 019 0 19 0 19 Linearity 0 02g 0 039 0 29 0 39 Adjusting weight not included 100g F2 500g F2 200 g 1 2009 1 Stabilization time 2 3 sec AUTO OFF Function in battery mode anara mm Units g oz ozt dwt Operating temperature 0 C 40 C Air humidity max 80 non condensing Case W x D x H mm 170x240x39 Weighing plate mm 105 150 Battery supply standard 1x9V AA 2x 1 5V 9V Mains adapter optional 300 mA 9V Underfloor weighing Hanging loop below the cover plate as standard KERN EMB1200 1 EMB2200 0 EMB5 2K1 EMB5 2K5 Readout 0 19 19 19 5g Weighing range 1 200 g 2 200 g 5 200 g 5 200 g Reproducibility 0 19 19 19 54 Linearity 0 3g 2g 3g 10g Adjusting weight not included 500 g M1 1 0009 M1 2 000 g M1 2 000g M1 Stabilization time 2 32. ORA 6 5 2 RTT 6 UNPACKING INSTALLATION AND COMMISSIONING ccce esee 7 6 1 PLACE OF INSTALLATION PLACE OF USE 7 6 2 lec PEE 8 621 v InstallatlOns c ne ee Re Mic bte obo ieee oo Set ted oM S icon etn EE 8 622 LISHOF items supplied iot eder ree ars nal 8 6 3 BATTERY OPEBATIONG ctii ee edere bene ded bibet tene 8 6 4 PASSUM 8 6 5 SP Ax zu 8 6 6 RPM 9 661 AJUS iena o eo o ht E rera Lee Ria yes nodes E E 9 6 7 UNDERFLOOR WEIGHING irna aroa nnn nnn nennen nennen a nen nennen nnn 10 OPERA TION mee 11 7 1 CNERVIEW OF THE KEYBAD dt eee etta eive t n ede ede be E Ri eee 11 7 2 OPEBATINGJUNSTR GTIONS a dd dad da aav dada rd st Fr Rare a a FA Rr 11 241 dnd eere EE Tee o Eee re 11 722 Tain E 11 MAING ise mts en ESL fec ta i 12 7 24 Dosage und Zero tracking esses sienne eene nannten an thee nnn nhe nn 12 42 5 JAAUTQOFF f lcliOnu isse ed csv td eese e Lace Shad Cabin e 13 7 2 6 lt FROSCETUNCHON 3 ale here este 14 MAINTENANCE UPKEEP
3. Hang on the hook for underfloor weighing 2 Place the balance over an opening Hang the item to be weighed on the hook and carry out weighing U 1 2 Fig 1 Setting up the balance for underfloor weighings A X CAUTION e For the underfloor weighing use only the original hook of KERN e Take care that all hanged items are stable enough to hold the goods which you wish to weigh Danger of breaking Never hang goods more than the maximum permitted weight Danger of breaking Always make sure that there are no living beings or materials below the load that could be injured or damaged NOTE After completing the underfloor weighing the opening in the floor of the balance must be closed again dust protection 10 EMB BA e 0624 7 Operation 7 1 Overview of the keypad Key Pressed briefly Pressed for 10 sec Switching the balance on EUR Unit changin TARE Tara Function Switching the balance off Adjusting function 7 2 Operating instructions 7 2 4 Weighing e The balance is switched on by pressing the amp key e The balance performs auto diagnostics for 2 s and then displays 0 e lf the weighing object is heavier than the weighing range the display indicates E Overload e The balance is switched off by pressing the 7 key once 7 2 2 Taring Place tare cup on the weighing plate and press key The weighing indica tion
4. impact shock and overloading the balance in excess of the pre scribed maximum load rating max minus any possible tare weight that is already present This could cause damage to the balance Never operate the balance in hazardous locations The series design is not explo sion proof Structural alterations may not be made to the balance This can lead to incorrect weighing results faults concerning safety regulations as well as to destruction of the balance The balance may only be used in compliance with the described guidelines Varying areas of application planned use must be approved by KERN in writing 3 3 Guarantee The guarantee is not valid following non observation of our guidelines in the operating instructions use outside the described applications alteration to or opening of the device mechanical damage and damage caused by media liquids natural wear and tear inappropriate erection or electric installation overloading of the measuring equipment 3 4 Monitoring the test substances The metrology features of the balance and any possible available adjusting weight must be checked at regular intervals within the scope of quality assurance For this purpose the answerable user must define a suitable interval as well as the nature and scope of this check Information is available on KERN s home page www kern sohn com with regard to the monitoring of balance test substances and the test weights required for
5. F2 IND KERN Sohn GmbH WAAGEN GEWICHTE BALANCES WEIGHTS Ziegelei 1 Tel 49 0 7433 9933 0 D 72336 Balingen Fax 49 0 7433 9933 149 E Mail info kern sohn com Internet www kern sohn com Operating Instructions School Balance KERN EMB Version 2 4 10 2006 GB EMB BA e 0624 KERN Version 2 4 10 2006 Operating Instructions School Balance Table of contents 1 2 9 TEGHNIGAL DATA wer 3 DECLARATION OF CONFORMITY 4 FUNDAMENTAL INFORMATION GENERAL 5 3 1 INTENDED USE rss oro ect A et e ELE ANE PUER oes aci umen S ad 5 3 2 INAPPROPRIATE fe fotos nen E PEE dene te 5 3 3 tiones uto imos A fecuti bur do eer eL RM ELLE 5 3 4 MONITORING THE TEST SUBSTANCES 0 000sceeeeeeeeeeeeeseeeeeeeseeeeeeeseseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 5 FUNDAMENTAL SAFETY INFORMATION 2 2 0 000000eseeeeeeeeenesesenesenenesesesesesenesesesenenensseneees 6 4 1 OBSERVE THE INFORMATION IN THE OPERATING INSTRUCTIONS cccccccccccceccececeeeceeeeececeeenenenenens 6 4 2 STAFF TRAINING a dee et etre d oda raa o a d e det 6 TRANSPORT AND 4 na 6 5 1 AOCGEPTANGE CHEGK re ier ote v euh Pe Pra a bor ra d c bu RA LR
6. al que se refiere esta declaraci n est de acuerdo con las normas siguientes Italiano Dichiariamo con cid che il prodotto al quale la presente dichiarazione si riferisce confor me alle norme di seguito citate Electronic Balances KERN EMB Mark applied EU Directive Standards 89 336EEC EMC EN 61000 6 3 2001 C EN 61000 3 2 2000 EN 61000 3 3 1995 A1 2001 EN 61000 6 1 2001 Date 15 11 2005 Signature Gottl KERN amp Sohn GmbH Management Gottl KERN amp Sohn GmbH Ziegelei 1 D 72336 Balingen Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 4 EMB BA e 0624 3 Fundamental information general 3 1 Intended use The balance you have acquired serves to determine the weighing value of the mate rial to be weighed It is intended to be used as a non automatic balance i e the material to be weighed is manually and carefully placed in the centre of the weighing plate The weighing value can be read off after a stable weighing value has been ob tained 3 2 Inappropriate use Do not use the balance for dynamic weighing In the event that small quantities are removed or added to the material to be weighed incorrect weighing results can be displayed due to the stability compensation in the balance Example Slowly drain ing fluids from a container on the balance Do not leave a permanent load on the weighing plate This can damage the measur ing equipment Be sure to avoid
7. ance is switched off press the OFF key and keep it pressed Do not release the OFF key Press also the ON TARE key and keep it pressed Keep the ON TARE key pressed however release the OFF key Press OFF key anew Keep both keys pressed until in the display tr appears Release both keys The balance is situated in the menu Press the ON TARE key until tr appears 0 0 44 uU I Q Z Confirm with the OFF key 12 EMB BA e 0624 Press the ON TAREkey to switch among the settings Display Mode tr ON Auto Zero on tr OFF Auto Zero off Confirm with the OFF key Wait until the balance automatically returns to weighing mode 7 2 5 AUTO OFF function For battery operation the balance has an automatic switch off function which can be activated and deactivated in the menu Please follow the below instruction for the setting 0 0 0 Q I Q Z When the balance is switched off press the OFF key and keep it pressed Do not release the OFF key Press also the ON TARE key and keep it pressed Keep the ON TARE key pressed however release the OFF key Press OFF key anew Keep both keys pressed until in the display tr appears Release both keys The balance is situated in the menu Press the ON TARE key until appears Confirm with the OFF key Press the ON TAREkey to switch among the settings Display Mode ON Battery conservati
8. any spilt material to be weighed immediately 8 2 Maintenance upkeep The device may only be opened by trained service engineers authorised by KERN Disconnect from the mains supply before opening 8 3 Disposal The operating company shall dispose of the packaging and the device in compliance with the valid national or regional law of the operating location EMB BA e 0624 15 9 Troubleshooting The balance should be switched off for a short time following an interruption in the programme sequence and disconnected from the mains supply It is then necessary to repeat the weighing process from the beginning Help Interruption Weight display is not illuminated The weight display changes continu e ally The weighing result is obviously in correct Possible cause The balance is not switched on The batteries are wrongly inserted the batteries are empty No batteries are attached The mains supply connection has been interrupted mains cable not plugged in faulty Power supply interrupted Draught air movement Table floor vibrations The weighing plate is in contact with for eign matter Electromagnetic fields static charging choose different location switch off inter fering device if possible The balance display is not set to zero Adjustment is no longer correct Great fluctuations in temperature Electromagnetic fields static charging choose different location switch off inter
9. changes now to 0 The weight of the cup is now memorised Fill weighing object in the cup read measuring value By pressing key after the terminated weighing operation 0 appears again in the display The taring procedure can be repeated several times for instance to produce a mix ture of several components The limit is reached when the total weighing range has been used After removal of the tare cup the total weight appears as a negative value with mark EMB BA e 0624 11 7 2 3 Units Different foreign weighing units are integrated into the various balance models Change the Units with the key Press an hold the key few seconds later change the unit Display Conversion factor 1 g Gramm g 1 Unze 02 0 035273962 Troy Unze ozt 0 032150747 Pennyweight dwt 0 643014931 7 2 4 Dosage und Zero tracking When the Auto Zero function is activated any slight changes of the zero readout are automatically tared In the event that small quantities are removed or added to the material to be weighed incorrect weighing results can be displayed due to the stability compensa in the balance Example Slowly draining fluids from a container on the bal ance Having dosages with slight changes of weight it is recommended to deactivate this function With switched off Zero Tracking the display however is more unstably Activate deactivate Zero Tracking When the bal
10. f the balance Connect 2 x 1 5V or 1x 9V batteries EMB 200 2 EMB600 2 Block Battery 9 V Re insert the battery cover Battery conservation through automatic power off 3 minutes after ending a weighing operation When the battery power is used up the display will show Press the XY key and change the batteries at once When the balance is not in use for a longer period of time remove batteries and keep them separately Leakage of battery liquid might damage the balance 6 4 Mains supply Electric power supply is by means of the external mains supply circuit The printed voltage level must comply with the local voltage Only use original KERN mains supply circuits The use of other makes is subject to approval by Kern 6 5 Initial start up A warm up time of 3 minutes stabilises the measured values after switching on The accuracy of the balance depends on the local acceleration of the fall Please be sure to observe the information in the chapter on adjusting 8 EMB BA e 0624 6 6 Adjustment As the acceleration value due to gravity is not the same at every location on earth each balance must be coordinated in compliance with the underlying physical weighing principle to the existing acceleration due to gravity at its place of location only if the balance has not already been adjusted to the location in the factory This adjustment process must be carried out during the initial start up after change in lo cation and
11. fering device if possible Switch the balance off if other error messages should appear and then switch on again Contact the manufacturer if the error message does not disappear 16 EMB BA e 0624
12. m level surface Avoid extreme heat as well as temperature fluctuation caused by installing next to a radiator or in the direct sunlight Protect the balance against direct draughts due to open windows and doors e Avoid jarring during weighing e Protect the balance against high humidity vapours and dust Do not expose the device to extreme dampness for longer periods of time In admissible bedewing condensation of air moisture on the device can occur if a cold device is taken into a significantly warmer environment In this case please acclimatise the device for approx 2 hours at room temperature after it has been disconnected from the mains Avoid static charging of the material to be weighed weighing container windshield Major display deviations incorrect weighing results are possible if electromagnetic fields occur as well as due to static charging currents and instable power supply It is then necessary to change the location EMB BA e 0624 7 6 2 Unpacking Carefully remove the balance from its packaging remove the plastic wrapping and position the balance in its intended working location 6 2 1 Installation Install the balance in such a fashion that the weighing plate is absolutely horizonta 6 2 2 List of items supplied Standard accessories KERN EMB e Balance e Operating manual e Batteries 2x 1 5 V or1x9V 6 3 Battery Operation Remove the battery cover from the bottom o
13. on through automatic power off 3 minutes after ending a weighing operation OFF AUTO OFF function deactivated Confirm with the OFF key Wait until the balance automatically returns to weighing mode EMB BA e 0624 13 7 2 6 Reset function Factory setting reset When the balance is switched off press the OFF key and keep it pressed Do not release the OFF key Press also the ON TARE key and keep it pressed Keep the ON TARE key pressed however release the OFF key Press OFF key anew c Keep both keys pressed until in the display tr appears c Release both keys The balance is situated in the menu c Press the ON TARE key until rSt appears c Confirm with the OFF key Press the ON TAREkey to switch among the settings Display Mode rst YES Factory setting reset rst NO No factory setting reset c Confirm with the OFF key Wait until the balance automatically returns to weighing mode 14 EMB BA e 0624 8 Maintenance upkeep disposal 8 1 Cleaning Please disconnect the device from the operating voltage before cleaning Only use a cloth dampened with mild suds and not aggressive cleaning agents sol vents or similar Please ensure that fluids are not able to get into the device and rub off using a clean soft cloth Loose sample residue powder can be removed carefully using a brush or hand vac uum cleaner Remove
14. sec AUTO OFF Function in battery mode aar damn Units 9 02 ozt dwt Operating temperature 0 40 C Air humidity max 80 non condensing Case Wx D x H mm 170x240x39 Weighing plate mm 150 Battery supply standard 9V AA 2x 1 5V 9V AA 2x 1 5 V Mains adapter optional 300 9V Underfloor weighing Hanging loop below the cover plate as standard EMB BA e 0624 2 Declaration of conformty N KERN amp Sohn GmbH D 72322 Balingen Frommern Tel 0049 0 7433 9933 0 Postfach 4052 Fax 0049 0 7433 9933 149 E Mail info kern sohn de Internet www kern sohn de n A WAAGEN GEWICHTE BALANCES WEIGHTS Konformitatserklarung Declaration of conformity for apparatus with CE mark Konformitatserklarung fur Gerate mit CE Zeichen D claration de conformit pour appareils portant la marque CE Declaracion de conformidad para aparatos con disitintivo CE Dichiarazione di cofnromita per apparecchi contrassegnati con la marcatura CE English We hereby declare that the product to which this declaration refers conforms with the fol lowing standards Deutsch Wir erklaren hiermit dass das Produkt auf das sich diese Erklarung bezieht mit den nach stehenden Normen Ubereinstimmt Francais Nous d clarons avec cela responsabilit que le produit auquel se rapporte la pr sente d claration est conforme aux normes cit es ci apr s Manifestamos en la presente que el producto
15. this Test weights and balances can be adjusted quickly and at a reasonable price in KERN s accredited DKD calibration laboratory return to na tional normal EMB BA e 0624 5 4 Fundamental safety information 4 1 Observe the information in the operating instructions Please read the operating instructions carefully before erecting and commissioning even if you already have experience with KERN balances 4 2 Staff training The device may only be operated and looked after by trained members of staff 5 Transport and storage 5 1 Acceptance check Please check the packaging immediately upon delivery and the device during un packing for any visible signs of external damage 5 2 Packaging Please retain all parts of the original packaging in case it should be necessary to re turn items at any time Only the original packaging should be used for return consignments Before despatch disconnect all attached cables and loose movable parts Secure all parts e g power unit etc to prevent slipping and damage 6 EMB BA e 0624 6 Unpacking installation and commissioning 6 1 Place of installation place of use The balance is constructed in such a way that reliable weighing results can be achieved under normal application conditions By selecting the correct location for your balance you will be able to work quickly and precisely Therefore please observe the following at the place of installation Place the balance on a fir
16. variation of surrounding temperature It is also recommendable to adjust the balance periodically during weighing operation in order to obtain exact measured values 6 6 1 Adjusting Using a precision weight the accuracy of the balance can be checked at any time and adjusted Adjustment procedure Check that the surrounding conditions are stable A short warm up time of about 3 minutes is recommended for stabilisation e Use the tS key to switch the balance on e Press the 7 and hold depressed for approx 10 seconds until CAL ap pears on the display e Release the amp key the size of the calibration weight is shown on the display see chapter 1 Technical Data e Now place the calibration weight in the centre of the weighing plate F will appear for a brief period of time before the balance switches off e Remove the calibration weight Calibration is completed In case of an adjusting error or a wrong adjusting weight will appear Repeat the adjusting procedure Keep the adjusting weight near the balance Daily verification of the balance accu racy is recommended for quality assured applications EMB BA e 0624 9 6 7 Underfloor weighing Objects which because of their size or shape cannot be put on the scale can be weighed by means of underfloor weighing Proceed as follows Switch off the balance Turn the balance over Open the cover plate 1 the base of the balance
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