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 Manual Compact balances KERN FCE Version 1.
GB KERN FCE Version 1.0 10/2008 Operating Manual Compact balances Table of Contents 1 Technical Data ............................................................................................... 3 2 Declaration of conformity ............................................................................. 5 3 Basic Information (General).......................................................................... 6 3.1 3.2 3.3 3.4 Proper use................................................................
1 Technical Data KERN FCE 3K1 FCE 6K2 FCE 15K5 Readability (d) 1g 2g 5g Weighing range (max) 3 kg 6 kg 15 kg Reproducibility 1g 2g 5g Linearity 2g 4g 10 g Warm-up time 10 minutes 10 minutes 10 minutes Weighing Units g g g 2.5 kg 5 kg 12 kg ( M2 ) ( M2 ) ( M2 ) Recommended adjustment weight, not added (class) Stabilization time (typical) Operating temperature Humidity of air Weighing plate mm Power pack 3 sec. +5°C... + 35° C max.
KERN FCE 30K10 FCE 30K10L FCE 60K20 Readability (d) 10 g 10 g 20 g Weighing range (max) 30 kg 30 kg 60 kg Reproducibility 10 g 20 g 20 g Linearity 20 g 40 g 40 g Warm-up time 10 minutes 10 minutes 10 minutes Weighing Units kg kg kg 25 kg 25 kg 50 kg ( M2 ) ( M2 ) ( M2 ) 3s 2s 2s Recommended adjustment weight, not added (class) Stabilization time Operating temperature +5°C... + 35° C Humidity of air Weighing plate mm max.
2 Declaration of conformity KERN & Sohn GmbH D-72322 Balingen-Frommern Postfach 4052 E-Mail: info@kern-sohn.de Tel: 0049-[0]7433- 9933-0 Fax: 0049-[0]7433-9933-149 Internet: www.kern-sohn.
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. 3.2 Improper Use Do not use balance for dynamic weighing.
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.
6.2.2 Scope of delivery Serial accessories: • Balance • Weighing plate • Mains power supply • 2 conveyor screws • Protective cover • Operating Manual 6.2.3 Basic structure • Place the balance on a horizontal and solid base. • Remove the transport security on the 4-point support. • Pull off the protection foil from the weighing plate if existing. • Attach the weighing plate. 6.3 Mains connection Power is supplied via the external mains adapter.
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).
7 Operation 7.
7.2 Weighing Operation Display Ö Start balance by pressing The balance displays for approx. 3 seconds [88888] M Memory 88888 kg and then goes to [0]. Now it is ready for operation. M Memory kg Ö Only now (!) place goods onto weighing plate. Take care that the weighed material does not touch the balance housing or the base mat. Now the weight is displayed, after the standstill control appears the weighing unit [g] right-hand in the display.
7.4 Plus/minus weighings Operation Ö Switch on balance by pressing [0] display. Display M and wait for the Memory Ö Put the nominal weight on the weighing plate and tare Memory to [0] using the kg M kg button. (Example) M Memory kg M Ö Remove the nominal weight. Memory kg 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 „-“.
8 Service, maintenance, disposal 8.1 CLEANING Before cleaning, please 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. Ensure that no liquid penetrates into the device and wipe 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. 8.
9 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 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. Batteries are inserted incorrectly or empty • No batteries inserted.
