KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen email: info@kern-sohn.com Tel: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Instruction Manual Platform/floor scales KERN EOS_F Version 1.
GB KERN EOS_F Version 1.2 11/2011 Operating instructions Platform/floor scales Contents 1 Technical data ................................................................................................ 4 2 Appliance overview ....................................................................................... 5 3 Overview of display ....................................................................................... 7 3.1 Keyboard overview ......................................................
9 Operation Mode ........................................................................................... 16 Start-up...................................................................................................................................16 Switching Off ..........................................................................................................................16 Weighing ............................................................................................................
1 Technical data EOS 150K50XLF EOS 300K100XLF 50 g 100 g 150 kg 300 kg 50 g 100 g Linearity ± 100 g ± 200 g Recommended adjustment weight, not added (class) 100 kg (M2) 200 kg (M2) KERN Readability (d) Weighing range (max) Reproducibility Stabilization time (typical) 2.5 sec. Warm-up time 10 min. Input Voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA Battery (optional) 6 x 1.
2 Appliance overview • • Weighing plate, stainless steel Anti-slip rubber mat • Display unit with wall fixing device: EOS_F-BA-e-1112 5
• 6 Comfortable transport due to 2 rollers and 1 grab handle EOS_F-BA-e-1112
3 Overview of display No. Description 1 Is displayed, when the battery capacity is exhausted. 2 Balance zero display: Should the balance not exactly display zero despite of unloaded weighing plate, use taring function (see chap. 7). The balance will be set to zero after a short standby time. 3 Display of the three possible channels 4 Display of receiving mode 5 Stability display: If the display shows the stability display [ο] the balance is in a stable status.
3.
4 Basic Information (General) 4.1 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“ balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. As soon as a stable weighing value is reached the weighing value can be read. 4.
4.4 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.
7 Unpacking, Setup and Commissioning 7.1 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.
7.2.1 Scope of delivery / serial accessories • Platform and display unit • 4 x adjustable feet • 2 x Power unit • Wall fixture (with fixing screws) • Instruction Manual 7.2.
7.3 Mains connection On the bottom side of the display unit or of the platform there is located the mains connection. Two mains adapters are delivered. Power is supplied via the external 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. Fig. Mains connection platform: Connection of mains adapter 7.
7.5 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, accumulator or battery). The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.
8 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 for the first commissioning, after each change of location as well as in case of fluctuating environment temperature.
9 Operation Mode Start-up Ensure that the channel at the platform corresponds to the channel of the display unit (see section „Setting channels). Moreover the distance between the platform and the display unit must not exceed 10 m. Ö Set rocker switch next to the platform to „1“. Ö Press the ON/OFF key on the display unit. The balance will carry out a self-test The balance is ready for weighing when the weight display appears.
Weighing Ö Turn on balance by pressing the ON/OFF key Ö Position item to be weighed Ö Wait for stability display Ö Read weighing result. Switch over weighing unit Ö By pressing the UNIT button the weighing result can be displayed in another unit [kg ' lb]. Unit conversion: 1 kg = 2.20462 lb The weighing units in the menu (see chap.10) must be put on „ON“.
Ö Place an empty weighing container, the weight of the weighing container will be displayed. Taring a) or b) Ö Press the TARE button or touch with your hand the contactfree taring field, the zero display appears. The indicator [S] under [NET] is displayed. The tare weight is saved until it is deleted. Ø Ö Weigh the material, the net weight will be indicated. The taring process can be repeated any number of times, e.g. when adding several components for a mixture (adding).
Delete tare Ö Unload the balance and press the TARE button, or touch the taring field with your hand, the zero display appears. or Ø The contact-free taring function can be switched on or switched off via the menu (see chap.
Hold function (animal weighing function) The balance has an integrated animal weighing function (mean value calculation). Using this function it is possible to weigh domestic or small animals exactly (min. load 1% of the max. one), although they do not stand quiet on the weighing plate. Ö Put upon weighing goods and press the HOLD key. In the display the indicator [S] starts flashing. During this time the balance takes up several measured values and displays then the calculated mean value.
Plus/minus weighings Ö For example for item weight check, production check etc. switch-on the balance using ON/OFF button and wait for zero display. Ö Put the nominal weight on the weighing plate (Example) Ö Use the TARE button or the TARE-touchfield for taring to zero. Ö Remove the nominal weight. Ö Put the test objects subsequently on the weighing plate, the respective deviation from the nominal weight is displayed with the respective sign to „+“ and „-“ (e.g. + 0.73 g).
Setting channels (display unit) + The balance has the possibility to set different channels. This is particularly necessary if several platforms are inserted next to each other. In this case failures may appear if not different channels have been set. It is possible to select between 3 channels. Setting channels on the display unit: Set rocker switch next to the platform to „1“. Switch-on display unit using ON/OFF button and wait for zero display.
In order to set the respective channel, put the corresponding switch to „ON“. The other pins must remain on the opposite side. * default setting channel 1 Then switch-on the platform. The new setting will be imported. The display unit changes to the zero display and thus is ready for use. Should the balance not display exactly zero despite empty weighing plate, press the TARE button. The balance will be set to zero after a short standby time.
10 Menu Changes are only allowed on the functions (automatic switch-off function). (weighing units) and Ö In weighing mode keep TARE button depressed for approx. 3 sec until "SETUP" is displayed followed by "UNIT" Ö Press the HOLD button as often as necessary until the required function is displayed. Ö Press the TARE button to confirm the selected function. The current setting will be displayed. Using the HOLD or TARE button, select the desired parameter. Use the HOLD button to return to the menu.
11 Service, maintenance, disposal 11.1 Cleaning Before cleaning, disconnect the appliance from the operating voltage. Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Take care that the device is not penetrated by fluids and polish it with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner. Spilled weighing goods must be removed immediately. 11.
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 appear. Possible cause weight does not • The balance is not switched on. • The mains supply connection has been interrupted (mains cable not plugged in/faulty). • Power supply interrupted.
