KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Tel: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating Instructions School Balance KERN EMB Version 3.
GB KERN EMB Version 3.2 07/2011 Operating Instructions School Balance Table of contents: 1 Technical data ................................................................................................ 3 2 Fundamental information (general).............................................................. 6 2.1 2.2 2.3 2.4 Intended use.................................................................................................................6 Inappropriate use........................................
1 Technical data KERN EMB 100-3 EMB 200-3 EMB 200-2 EMB 220-1 EMB 500-1 0,001 g 0,001 g 0,01 g 0,1 g 0,1 g 100 g 200 g 200 g 220 g 500 g Reproducibility 0,001 g 0,001 g 0,01g 0,1 g 0,1 g Linearity ± 0,003 g ± 0,003 g ± 0,02 g ± 0,2 g ± 0,2 g 100 g (F1) 200 g (F1) 200 g (M1) 200 g (M2) 500g (M2) Readout (d) Weighing range (Max) Adjusting weight (not included) (class) Stabilization time 2-3 sec. AUTO-OFF-Function (in battery mode) 3 min.
KERN EMB 600-2 EMB 1000-2 EMB 1200-1 EMB 2000-2 Readout (d) 0,01 g 0,01 g 0,1 g 0,01 g Weighing range (Max) 600 g 1000 g 1200 g 2000 g Reproducibility 0,01 g 0,01g 0,1 g 0,01 g ± 0,03 g ± 0,02 g ± 0,3 g ± 0,02 g 500 g (F2) 1000 g (F1) 1000 g (M1) 2000 g (F1) Linearity Adjusting weight (not included) (class) Stabilization time 2-3 sec. AUTO-OFF-Function (in battery mode) 3 min. Units g, oz, ozt, dwt Operating temperature +5°C… +35°C Air humidity max.
KERN Readout (d) Weighing range (Max) Reproducibility Linearity Adjusting weight (not included) (class) EMB 2200-0 EMB 3000-1 EMB 5.2K1 EMB 5.2K5 EMB 6000-1 1g 0,1 g 1g 5g 0,1 g 2200 g 3000 g 5200 g 5200 g 6000 g 1g 0,1 g 1g 5g 0,1 g ±2g ± 0,3 g ±3g ± 10 g ± 0,3 g 2000 g (M1) 3000 g (M1) 5000 g (M1) 5000 g (M1) 5000 g (M1) Stabilization time 2-3 sec. AUTO-OFF-Function (in battery mode) 3 min. Units g, oz, ozt, dwt Operating temperature +5°C… +35°C Air humidity max.
2 Fundamental information (general) 2.1 Intended use The balance you have acquired serves to determine the weighing value of the material 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 obtained. 2.2 Inappropriate use Do not use the balance for dynamic weighing.
3 Fundamental safety information 3.1 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. 3.2 Staff training The device may only be operated and looked after by trained members of staff. 4 Transport and storage 4.1 Acceptance check Please check the packaging immediately upon delivery and the device during unpacking for any visible signs of external damage. 4.
5 Unpacking, installation and commissioning 5.1 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.
5.2 Unpacking Carefully remove the balance from its packaging, remove the plastic wrapping and position the balance in its intended working location. 5.2.1 Installation Install the balance in such a fashion that the weighing plate is absolutely horizonta 5.2.2 List of items supplied Standard accessories: KERN EMB • Balance • Operating manual • Batteries (2 x 1,5 V) or 1 x 9 V 5.3 Battery Operation Remove the battery cover from the bottom of the balance.
5.6 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 location and variation of surrounding temperature.
5.7 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) on the base of the balance. 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. 1 2 Fig.
6 Operation 6.1 Overview of the keypad Key Pressed briefly Pressed for 10 sec Switching the balance on Unit changing Tara-Function Switching the balance off 6.2 Adjusting function Operating instructions 6.2.1 Weighing Ö The balance is switched on by pressing the key. Ö The balance performs auto-diagnostics (for 2 s) and then displays "0". Ö If the weighing object is heavier than the weighing range the display indicates "E" (=Overload). Ö The balance is switched off by pressing the key once. 6.
6.2.3 Units Different foreign weighing units are integrated into the various balance models . Change the Units with the Press an hold the key , few seconds later change the unit. Display Gramm Unze Troy Unze Pennyweight key. g oz ozt dwt Conversion factor 1g= 1. 0.035273962 0.032150747 0.643014931 6.2.4 Dosage und Zero-tracking When the Auto-Zero-function is activated, any slight changes of the zero readout are automatically tared.
Ö Press the ON/TAREkey to switch among the settings: Display Mode „tr“ ON Auto-Zero on „tr“ OFF Auto-Zero off Ö Confirm with the OFF key. Wait until the balance automatically returns to weighing mode 6.2.5 AUTO-OFF function For battery operation the balance has an automatic switch off function which can be activated and deactivated in the menu.
6.2.6 Reset function Factory setting reset. Ö When the balance is switched off, press the OFF -key and keep it pressed Ö Do not release the OFF -key. Press also the ON/TARE-key and keep it pressed Ö Keep the ON/TARE-key pressed, however release the OFF -key Ö Press OFF -key anew Ö Keep both keys pressed until in the display “tr” appears Ö Release both keys. The balance is situated in the menu.
7 Maintenance, upkeep, disposal 7.1 Cleaning Please disconnect the device from the operating voltage before cleaning. Only use a cloth dampened with mild suds and not aggressive cleaning agents (solvents 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 vacuum cleaner. Remove any spilt material to be weighed immediately. 7.
8 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 Possible cause Weight display is not illuminated. • The balance is not switched on.
