KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating instructions Compact balance KERN FOB-S Version 1.
GB KERN FOB-S Version 1.2 08/2013 Operating instructions Compact balance Contents 1 2 Technical data ................................................................................................ 3 Basic Information (General) .......................................................................... 4 2.1 2.2 2.3 2.4 Proper use .................................................................................................................................. 4 Improper Use .............................
1 Technical data KERN FOB 500-1S FOB 5K1S Readability (d) 0.1 g 1g Weighing range (max) 500 g 5,000 g Reproducibility 0.1g 1g ± 0.2 g ±2g Linearity Weighing Units Recommended adjustment weight, not added (class) g, lb, oz, dwt, ozt 200 g / 500 g (M1) 2,000 g / 5,000 g (M1) Warm-up time 10 min Stabilization time (typical) 2 sec. Operating temperature Humidity of air Housing (B x D x H) mm Weighing plate, stainless steel (mm) + 10° C ....
2 Basic Information (General) 2.1 Proper use The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic balcance”, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing pan.. As soon as a stable weighing value is reached the weighing value can be read. 2.2 Improper Use Do not use balance for dynamic weighings.
2.4 Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. 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 this.
5 Unpacking, Setup and Commissioning 5.1 Installation Site, Location of Use The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance.
5.2.1 Placing The balance must be installed in a way that the weighing plate is exactly in horizontal position. 5.2.2 Scope of delivery Serial accessories: Balance Weighing pan Mains adapter (optional) Protective working cover Operating instructions 5.2.3 Assembly/disassembly of the operating cover Unblock the plate of the scales by turning it in the direction indicated by the arrow.
5.3 Mains connection (optional) The balance may be operated via the optional mains adapter. The stated voltage value must be the same as the local voltage. Only use original KERN mains adapters. Using other makes requires consent by KERN. 5.4 Battery operation Remove battery cover at the lower side of the casing. Insert 9 V block. Reinsert the battery cover. In the menu you can activate the AUTO-OFF function (see chap. 8.4.2 “Automatic switch-off function“).
5.5 Initial Commissioning In order to obtain exact results with the electronic balances, your balance must have 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 or battery). The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment. 5.
Procedure when adjusting: Observe stable environmental conditions. A warming up time (see chapter 1; Technical Data) is required for stabilization. Ensure that there are no objects on the weighing plate. Balance display Operation Start balance by pressing The balance carries out an autotest and changes then into the weighing mode, the zero display „0.0“ appears Press for approx.
6 Operating elements 6.1 Keyboard overview Buttons specification: Key Description Pressed once and released [ON/OFF] Turn on/off In menu: [TARE] Taring Passing through menu items from top to bottom [UNIT] Weighing units switching over Passing through menu items from left to right Invoke adjustment 6.
7 Operation 7.1 Simple weighing Balance display Operation Start balance by pressing . The balance will carry out a self-test. „Wait for 0.0“ display Should the balance not display exactly „0.0“ despite (example) empty weighing pan, press the button. The balance returns to „0.0“ Place goods to be weighed on balance. Wait until the stability display appears. Read weighing result. To switch off the balance press shortly . 7.
7.3 Weighing units switch-over According to the requirements the balance can be switched over into different units. These are set in the menu (see chap. 8.4.1). In weighing mode, use to change between the set units. 8 The menu 8.1 Call up menu The menu is invoked by pressing the mode. 8.2 button for approx.
8.4 Menu settings 8.4.1 Setting weighing units Balance display Operation In weighing mode press seconds. button for approx. 3 „SEt“, followed by „Unit“ is displayed Press again, the weighing unit „g“ is displayed Use to change to the desired unit Press , „OFF“ will be shown. Use to change to „On“ (example) (example) (example) Press , the selected unit will be diplayed thus being set.
Press , „A.Off“ will be shown Press , „CAP.“ is displayed Press , „End“ is displayed Use to return to weighing mode Use to change between the set units (example) In order to switch off the units display, proceed as described above and set the selected unit to „Off“. 8.4.2 Automatic switch-off function „AUTO OFF“ in stand-by mode The balance offers the possibility of the automatic switch-off, when the balance is in stand-by mode.
Press , the current setting will be displayed. Use to select the desired setting: 120s = Auto off after 120 seconds 180s = Auto off after 180 seconds 240s = Auto off after 240 seconds 300s = Auto off after 300 seconds OFF = Auto off switched off Use to take over the selected items, „AOFF“ is displayed Press , „CAP.“ is displayed Press again , „End“ is displayed Press , the balance will return into weighing mode. The setting is saved.
9 Error messages Battery empty Insert new battery or connect the balance to power supply Remove load and if necessary Weighing range exceeded Zeroing range not reached Software error press to reset balance to zero Increase the load, if the error message remains, please contact your retailer Contact your retailer 10 Service, maintenance, disposal 10.1 Cleaning Before cleaning, please disconnect the appliance from the operating voltage.
11 Instant help In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault The displayed weight does not glow. Possible cause The balance is not switched on. The mains supply connection has been interrupted (mains cable not plugged in/faulty). Power supply interrupted. (Rechargeable) batteries are inserted incorrectly or empty No (rechargeable) batteries inserted.
