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-N
Version 2.0
11/2012
GB
FCE-N-BA-e-1220
FCE-N-BA-e-1220
2
GB
KERN FCE-N
Version 2.0 11/2012
Operating Manual
Compact balances
Table of Contents
1 Technical Data ............................................................................................... 3
2 Declaration of conformity ............................................................................. 5
3 Basic Information (General) .......................................................................... 6
3.1 Proper use ................................................................................................................ 6
3.2 Improper Use ........................................................................................................... 6
3.3 Warranty ................................................................................................................... 6
3.4 Monitoring of Test Resources ................................................................................ 7
4 Basic Safety Precautions .............................................................................. 7
4.1 Pay attention to the instructions in the Operation Manual ................................... 7
4.2 Personnel training ................................................................................................... 7
5 Transportation & Storage .............................................................................. 7
5.1 Testing upon acceptance ........................................................................................ 7
5.2 Packaging / return transport ................................................................................... 7
6 Unpacking, Setup and Commissioning ....................................................... 8
6.1 Installation Site, Location of Use ........................................................................... 8
6.2 Unpacking ................................................................................................................ 8
6.2.1 Placing ........................................................................................................................................ 8
6.2.2 Scope of delivery ........................................................................................................................ 9
6.2.3 Basic structure ............................................................................................................................ 9
6.3 Mains connection .................................................................................................... 9
6.4 Operation using a (rechargeable) battery (optional) ............................................. 9
6.5 Initial Commissioning ............................................................................................. 9
6.6 Adjustment ................................ ..............................................................................10
6.7 Adjustment ................................ ..............................................................................10
7 Operation ...................................................................................................... 11
7.1 Overview of display ................................................................................................11
7.2 Weighing .................................................................................................................12
7.3 Taring ......................................................................................................................12
7.4 Plus/minus weighings ............................................................................................13
8 Service, maintenance, disposal .................................................................. 14
8.1 Cleaning ..................................................................................................................14
8.2 Service, maintenance .............................................................................................14
8.3 Disposal...................................................................................................................14
9 Instant help ................................................................................................... 15
FCE-N-BA-e-1220
3
1 Technical Data
KERN
FCE 3K1N
FCE 6K2N
Readability (d)
1 g
2 g
Weighing range (max)
3 kg
6 kg
Reproducibility
2 g
4 g
Linearity
3 g
6 g
Warm-up time
10 minutes
Weighing Units
g
Recommended adjustment weight,
not added (class)
3 kg
(M2)
6 kg
(M2)
Stabilization time (typical)
3 sec.
Operating temperature
+5°C... + 35° C
Humidity of air
max. 80 % (not condensing)
Weighing plate mm
252 x 228
Power pack
9 V / 300 mA
Battery
9 V block
Auto-off
3 minutes
Rechargeable battery
optional
Protective cover
Weight kg (net)
2.5
FCE-N-BA-e-1220
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KERN
FCE 15K5N
FCE 30K10N
Readability (d)
5 g
10 g
Weighing range (max)
15 kg
30 kg
Reproducibility
10 g
20 g
Linearity
15 g
30 g
Warm-up time
10 minutes
Weighing Units
g
kg
Recommended adjustment weight,
not added (class)
15 kg
(M2)
30 kg
(M2)
Stabilization time
3 sec.
Operating temperature
+5°C... + 35° C
Humidity of air
max. 80 % (not condensing)
Weighing plate mm
252 x 228
Power pack
9 V / 300 mA
Battery
9 V block
Auto-off
3 minutes
Rechargeable battery
optional
Protective cover
Weight kg (net)
2.5
FCE-N-BA-e-1220
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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.de
Konformitätserklärung
EC-Konformitätserklärung EC-Declaration of -Conformity
EC- Déclaration de conformité EC-Declaración de Conformidad
EC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodności EC-Заявление о соответствии
D
Konformitätserklärung
Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht,
mit den nachstehenden Normen übereinstimmt.
GB
Declaration of
conformity
We hereby declare that the product to which this declaration refers conforms
with the following standards.
CZ
Prohlášení o
shode
Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je v souladu
s níže uvedenými normami.
E
Declaración de
conformidad
Manifestamos en la presente que el producto al que se refiere esta
declaración está de acuerdo con las normas siguientes
F
Déclaration de
conformité
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la
présente déclaration, est conforme aux normes citées ci-après.
I
Dichiarazione di
conformitá
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si
riferisce è conforme alle norme di seguito citate.
NL
Conformiteitverklaring
Wij verklaren hiermede dat het product, waarop deze verklaring betrekking
heeft, met de hierna vermelde normen overeenstemt.
P
Declaração de
conformidade
Declaramos por meio da presente que o produto no qual se refere esta
declaração, corresponde às normas seguintes.
PL
Deklaracja
zgodności
Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,
jest zgodny z poniższymi normami.
RUS
Заявление о
соответствии
Мы заявляем, что продукт, к которому относится данная декларация,
соответствует перечисленным ниже нормам.
Electronic Scale: KERN NDE, PCB, FCB, FKB…A, FCE
Mark applied
EU Directive
Standards
2004/108/EC
EN 55022: 1998+A1+A2
EN 61000-3-2: 2000+A2
EN 61000-3-3: 1995+A1
EN 55024: 1998+A1+A2
Date: 27.10.2008
Signature:
KERN & Sohn GmbH
Management
KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
FCE-N-BA-e-1220
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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. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the “stability compensation“ in the balance. (Example: Slowly
draining fluids from a container on the balance.)
Do not leave permanent load on the weighing plate. This may damage the
measuring system.
Impacts and overloading exceeding the stated maximum load (max) of the balance,
minus a possibly existing tare load, must be strictly avoided. Balance may be
damage by this.
Never operate balance in explosive environment. The serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
3.3 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the described uses
The appliance is modified or opened
mechanical damage and damage caused by media, liquids,
Natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
FCE-N-BA-e-1220
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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. In KERN’s accredited DKD calibration laboratory test weights and balances may
be calibrated (return to the national standard) fast and at moderate cost.
4 Basic Safety Precautions
4.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN
balances.
Versions in other languages are non-binding translations.
The only binding version is the original document in German.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transportation & Storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 Packaging / return transport
Keep all parts of the original packaging for a possibly
required return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove
loose/mobile parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the
weighing platform, power unit etc. against shifting and
damage.
FCE-N-BA-e-1220
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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.
Therefore, observe the following for the installation site:
Place the balance on a firm, level surface;
Avoid extreme heat as well as temperature fluctuation caused by installing next to
a radiator or in the direct sunlight;
Protect the balance against direct draughts due to open windows and doors;
Avoid jarring during weighing;
Protect the balance against high humidity, vapors and dust;
Do not expose the device to extreme dampness for longer periods of time. Non-
permitted condensation (condensation of air humidity on the appliance) may
occur if a cold appliance is taken to a considerably warmer environment. In this
case, acclimatize the disconnected appliance for ca. 2 hours at room
temperature.
Avoid static charging of the material to be weighed, weighing container and
windshield.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or remove
source of interference.
6.2 Unpacking
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
6.2.1 Placing
The balance must be installed in a way that the weighing plate is exactly in horizontal
position.
FCE-N-BA-e-1220
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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. 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 Operation using a (rechargeable) battery (optional)
Lift-off the battery cover on the lower side of the balance. Connect 9 V compound
battery.
Reinsert the battery cover.
For battery operation the balance has an automatic switch-off function. (after 3
minutes).
If there exists an optional rechargeable battery, it has to be connected in the battery
compartment via a separate plug-in socket. Now the mains adapter delivered with
the rechargeable battery must be applied.
6.5 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.
FCE-N-BA-e-1220
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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). 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. To
receive accurate measuring values it is also recommended to adjust the balance
periodically in weighing operation.
6.7 Adjustment
The adjustment should be made with the recommended adjustment weight (see
chap. 1 "Technical data"). Adjustment is also possible with the weights of other
nominal values, but not the optimum for measuring technique.
Procedure when adjusting:
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization.
Operation
Display
Start balance by pressing
The balance displays for approx. 3 seconds [88888]
and then goes to [0]. Now it is ready for operation.
Press and keep it pressed, [CAL] is displayed
After approx. 5 seconds appears the size of the
recommended adjustment weight
(Example)
Place adjusting weight in the center of the weighing
plate, short time later appears [F]
Afterwards the balance automatically jumps back to
normal weighing mode. In the display there appears the
value of the adjustment weight.
(Example)
An error during adjustment or the use of an incorrect adjusting weight will result in an
error message „CAL E“. Repeat adjustment.
Keep the adjustment close to the balance. Daily control of the weighing exactness is
recommended for quality-relevant applications.
FCE-N-BA-e-1220
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7 Operation
7.1 Overview of display
FCE-N-BA-e-1220
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7.2 Weighing
Operation
Display
Start balance by pressing
The balance displays for approx. 3 seconds [88888]
and then goes to [0]. Now it is ready for operation.
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.
(Example)
If the material to be weighed is heavier than the weighing
range, the display will show [Error] (=Overload).
7.3 Taring
Operation
Display
Switch on balance by pressing and wait for the
[0] display.
Place the tare vessel on the weighing plate and press
the button. The balance display goes to [0].
Put the sample into the tare vessel.
The weight of the sample will be displayed.
(Example)
If after finishing the weighing process the button is
pressed again, [0] appears anew in the display.
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.
After removing the taring container the total weight is displayed as negative display.
By pressing anew the button, the balance will go back to „0“.
FCE-N-BA-e-1220
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7.4 Plus/minus weighings
Operation
Display
Switch on balance by pressing and wait for the
[0] display.
Put the nominal weight on the weighing plate and tare
to [0] using the button.
(Example)
Remove the nominal weight.
The nominal weight is displayed as negative display.
Put the test objects subsequently on the weighing
plate, the respective deviation from the nominal weight
is displayed with the respective sign to „+“ and „-“.
(Example)
Back to weighing mode by pressing the button.
FCE-N-BA-e-1220
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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.
8.2 Service, maintenance
The appliance may only be opened by trained service technicians who are
authorized by KERN.
Before opening, disconnect from power supply.
8.3 Disposal
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
FCE-N-BA-e-1220
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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.
The displayed weight is permanently
changing
Draught/air movement
Table/floor vibrations
The weighing plate is in contact with
foreign matter.
Electromagnetic fields / static charging
(choose different location/switch off
interfering device if possible)
The weighing result is obviously
incorrect
The display of the balance is not at zero
Adjustment is no longer correct.
Great fluctuations in temperature.
Electromagnetic fields / static charging
(choose different location/switch off
interfering device if possible)
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
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