KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen email: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating instructions Platform/floor scales KERN EOB / EOE_L / EOE_XL / EOS Version 3.
GB KERN EOB / EOE_L / EOE_XL / EOS Version 3.0 07/2010 Operating instructions Platform/floor scales Table of Contents 1 Technical Specifications ............................................................................... 4 2 Appliance overview ....................................................................................... 9 2.1 Overview of displays................................................................................................11 2.2 Keyboard overview.....................
8 Operation...................................................................................................... 18 Start-up..................................................................................................................................18 Switching Off ........................................................................................................................18 Weighing ..........................................................................................................
1 Technical Specifications Models KERN EOB EOB 15K5 EOB 35K10 EOB 60K20 EOB 60K20L 5g 10 g 20 g 20 g 15 kg 35 kg 60 kg 60 kg 5g 10 g 20 g 20 g Linearity ±10 g ±20 g ±40 g ±40 g Recommended adjustment weight, not added (class) 10 kg (M2) 20 kg (M2) 40 kg (M2) 40 kg (M2) KERN Readability (d) Weighing range (max) Reproducibility Stabilization time (typical) 2.5 sec.
EOB 150K50 EOB 150K50L EOB 150K50XL 50 g 50 g 50 g 150 kg 150 kg 150 kg 50 g 50 g 50 g Linearity ±100 g ±100 g ±100 g Recommended adjustment weight, not added (class) 100 kg (M2) 100 kg (M2) 100 kg (M2) KERN Readability (d) Weighing range (max) Reproducibility Stabilization time (typical) 2.5 sec. Warm-up time 10 min Supply voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA Battery 6 x 1.
EOB 300K100A EOB 300K100L EOB 300K100XL Readability (d) 100 g 100 g 100 g Weighing range (max) 300 kg 300 kg 300 kg Reproducibility 100 g 100 g 100 g Linearity ±200 g ±200 g ±200 g Recommended adjustment weight, not added (class) 200 kg (M2) 200 kg (M2) 200 kg (M2) KERN Stabilization time (typical) 2.5 sec. Warm-up time 10 min. Supply voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA Battery (optional) 6 x 1.
Models KERN EOE EOE 150K50L EOE 150K50XL EOE 300K100L EOE 300K100XL 50 g 50 g 100 g 100 g 150 kg 150 kg 300 kg 300 kg 50 g 50 g 100 g 100 g Linearity ±100 g ±100 g ±200 g ±200 g Recommended adjustment weight, not added (class) 100 kg (M2) 100 kg (M2) 200 kg (M2) 200 kg (M2) KERN Readability (d) Weighing range (max) Reproducibility Stabilization time (typical) 2.5 sec. Warm-up time 10 min.
Models KERN EOS EOS 150K50XL EOS 300K100XL 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. Supply voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA Battery (optional) 6 x 1.
2 Appliance overview Models EOB Weighing plate, stainless steel Models EOE Weighing plate varnished steel EOB/EOE_L/EOE_XL/EOS-BA-e-1030 9
Models EOS • Weighing plate, stainless steel • Anti-slip rubber mat Comfortable transport due to 2 rollers and 1 grab handle 10 EOB/EOE_L/EOE_XL/EOS-BA-e-1030
2.1 No. Overview of displays Description 1 Is displayed, when the battery capacity is exhausted. 2 Balance zero display: Should the balance not display exactly zero despite empty scale pan, press the TARE button. The balance will be set to zero after a short standby time. 3 Stability display: If the display shows the stability display [ο] the balance is in a stable status. The [ο] indication disappears if the condition is unstable. 4 Hold/animal weighing function active, see chap.
3 Basic Information (General) 3.1 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. 3.
3.4 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.
6 Unpacking, Setup and Commissioning 6.1 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.
6.2.1 Scope of delivery / serial accessories • Platform and display unit, (see chap. 2) • 4 x adjustment feet (excepted platform size 314.5 x 304.5 cm) • Mains power supply • Wall fixture (with fixing screws) • Operating instructions 6.2.
6.3 Mains connection 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. 6.4 Battery operation On the rear side of the display unit remove the battery cover and connect 6 x 1.5V mignon cells. Reinsert the battery cover. In order to save the battery, the balance switches automatically off after 3 minutes without weighing.
7 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.
8 Operation Start-up Ö Press the ON/OFF key. The balance will carry out a self-test. The balance is ready for weighing when the weight display appears. 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. Switching Off Ö Press ON/OFF button, the display disappears Weighing Ö Place goods to be weighed on balance Ö Wait for stability display Ö Read weighing result.
Taring Ö Place an empty weighing container, the weight of the weighing container will be displayed. Ö Press the TARE button, the zero display disappears. 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). The limit is reached when the whole weighing range is exhausted.
The balance has an integrated animal weighing function (mean Hold function value calculation). Using this function it is possible to weigh (animal weighing domestic or small animals exactly (min. load 1% of the max. function) 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 weighing 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 and tare to zero using TARE key. Remove the nominal weight. Ø 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. + 0.037 g).
9 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.
10 Service, maintenance, disposal 10.1 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. Remove spilled weighing goods immediately. 10.
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 Possible cause The displayed weight does not glow. • The balance is not switched on. • The mains supply connection has been interrupted (mains cable not plugged in/faulty). • Power supply interrupted.
