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 EOB_F
Version 1.0
07/2013
GB
EOB_F-BA-e-1310
EOB_F-BA-e-1310
2
GB
KERN EOB_F
Version 1.0 07/2013
Operating instructions Platform/floor scales
Contents
1 Technical Data ............................................................................................... 3
2 Appliance overview ....................................................................................... 5
3 Overview of display ....................................................................................... 6
3.1 Keyboard overview .................................................................................................... 7
4 Basic Information (General) .......................................................................... 8
4.1 Proper use ................................................................................................................. 8
4.2 Improper Use ............................................................................................................. 8
4.3 Warranty .................................................................................................................... 8
4.4 Monitoring of Test Resources .................................................................................... 9
5 Basic Safety Precautions .............................................................................. 9
5.1 Pay attention to the instructions in the Operation Manual .......................................... 9
5.2 Personnel training ...................................................................................................... 9
6 Transportation & Storage .............................................................................. 9
6.1 Testing upon acceptance ........................................................................................... 9
6.2 Packaging / return transport ...................................................................................... 9
7 Unpacking, Setup and Commissioning ..................................................... 10
7.1 Installation Site, Location of Use ...............................................................................10
7.2 Unpacking and erection ............................................................................................10
7.2.1 Scope of delivery / serial accessories....................................................................................... 11
7.2.2 Assembly instructions for the use of the wall fixture ................................................................. 11
7.3 Mains connection ......................................................................................................12
7.4 Battery operation ......................................................................................................12
7.5 Initial Commissioning ................................................................................................14
8 Adjustment ................................................................................................... 14
9 Operation Mode ........................................................................................... 16
Start-up ................................................................................................................................16
Switching Off ........................................................................................................................16
Weighing ..............................................................................................................................17
Switch over weighing unit ....................................................................................................17
Taring ...................................................................................................................................18
Hold function (animal weighing function) ..............................................................................20
Plus/minus weighings ...........................................................................................................21
Setting channels ...................................................................................................................22
10 Menu ............................................................................................................. 24
11 Service, maintenance, disposal .................................................................. 25
11.1 Cleaning ...................................................................................................................25
11.2 Service, maintenance ...............................................................................................25
11.3 Disposal ....................................................................................................................25
12 Error messages, troubleshooting guide .................................................... 25
13 Declaration of Conformity ................................ ................................ ........... 27
EOS_F-BA-e-1310
3
1 Technical Data
KERN
EOB
35K2F
EOB
60K2F
EOB
60K2LF
Readability (d)
10 g
20 g
20 g
Weighing range (max)
35 kg
60 kg
60 kg
Reproducibility
10 g
20 g
20 g
Linearity
± 20 g
± 40 g
± 40 g
Recommended
adjustment weight, not
added (class)
20 kg
(M2)
40 kg
(M2)
40 kg
(M2)
Stabilization time (typical)
3 sec.
Warm-up time
10 min.
Input Voltage
220 V- 240 V, AC 50 Hz
Power pack
secondary voltage
9 V, 100 mA
Battery (optional)
6 x 1.5 V AA (= 9 V)
Battery operation period
Display unit: 70 h
Platform: 110 h
Auto Off
3 min.
Weighing Units
kg, lb
Ambient temperature
+ 10°C …+ 35°C
Humidity of air
max. 80 % (not condensing)
Display unit
(B x D x H) mm
210 x 110 x 45
Radio transmission to
weighing platform
Range: max. 10 m on free surface, free of buildings
Weighing surface mm
314,5 x 304,5
314,5 x 304,5
550 x 550
Weight kg (net)
4
4
13,5
EOB_F-BA-e-1310
4
KERN
EOB
150K2F
EOB
150K2LF
EOB
300K1LF
Readability (d)
50 g
50 g
100 g
Weighing range (max)
150 kg
150 kg
300 kg
Reproducibility
50 g
50 g
100 g
Linearity
± 100 g
± 100 g
± 200 g
Recommended
adjustment weight, not
added (class)
100 kg
(M2)
100 kg
(M2)
200 kg
(M2)
Stabilization time (typical)
3 sec.
Warm-up time
10 min.
Input Voltage
220 V- 240 V, AC 50 Hz
Power pack
secondary voltage
9 V, 100 mA
Battery (optional)
6 x 1.5 V AA (= 9 V)
Battery operation period
Display unit: 70 h
Platform: 110 h
Auto Off
3 min.
Weighing Units
kg, lb
Ambient temperature
+ 10°C …+ 35°C
Humidity of air
max. 80 % (not condensing)
Display unit
(B x D x H) mm
210 x 110 x 45
Radio transmission to
weighing platform
Range: max. 10 m on free surface, free of buildings
Weighing surface mm
314,5 x 304,5
550 x 550
550 x 550
Weight kg (net)
4
13,5 13,5
EOS_F-BA-e-1310
5
2 Appliance overview
Weighing plate, stainless steel
Display unit
Weighing platform 314,5 x 304,5 mm
Weighing platform 550 x 550 mm
1. Power On-Off
2. Mains connection
Display unit with wall fixing device:
EOB_F-BA-e-1310
6
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. The [ο] indication disappears if the condition is unstable.
6
Hold/animal weighing function active, see chap. 7
7
Weighing unit [kg lb], (see chap. 7) „Switch-over weighing unit“
8
Stored tare value, (see chap. 7) „Taring“
9
Contact-free taring field
EOS_F-BA-e-1310
7
3.1 Keyboard overview
Key
Function
Turn on/off balance
Hold/ animal weighing function
+
Tare balance by
The TARE button or
The contact-free taring field
Switch-over weighing unit
Select channel
EOB_F-BA-e-1310
8
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.
4.2 Improper Use
Do not use balance for dynamic add-on weighing procedures, if small amounts of
goods to be weighed are removed or added. The “stability compensation“ installed in
the balance may result in displaying an incorrect measuring value! (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.
4.3 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 or damage by media, liquids, natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
EOS_F-BA-e-1310
9
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. In KERN’s accredited DKD calibration laboratory test weights and balances may
be calibrated (return to the national standard) fast and at moderate cost.
5 Basic Safety Precautions
5.1 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.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 Transportation & Storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
6.2 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.
EOB_F-BA-e-1310
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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.
Therefore, observe the following for the installation site:
Place the balance on a firm, level surface;
Ensure that the surroundings between display unit and weighing platform are
free of buildings, otherwise the radio connection may be disturbed
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, vapours 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 charge of goods to be weighed or weighing container.
If electro-magnetic fields or static charge occur, or if the power supply is unstable
major deviations on the display (incorrect weighing results) are possible. In that case,
the location must be changed.
7.2 Unpacking and erection
Open package, take out the appliance and accessories. Verify that there has been
no damage and that all packing items are present.
The balance must be installed in a way that the weighing plate is exactly in horizontal
position.
Mount the display unit in a way that facilitates operation and where it is easy to see.
EOS_F-BA-e-1310
11
7.2.1 Scope of delivery / serial accessories
Platform and display unit
4 x adjustable feet (only models with weighing platform 550 x 550)
2 x Power unit
Wall fixture (with fixing screws)
Instruction Manual
7.2.2 Assembly instructions for the use of the wall fixture
EOB_F-BA-e-1310
12
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 314,5 x 304,5 mm:
Fig. Mains connection platform 550 x 550 mm:
Connection of mains adapter
7.4 Battery operation
On the rear side of the display unit – the platform (see Fig) 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. Further shutdown times can be set in the Menu (Function
"A.OFF"), see chap. 10.
If the batteries are exhausted, the battery symbol will appear (see chap.3). Switch-off
balance and replace batteries at once.
If the balance is not used for a longer time, take out the batteries and store them
separately. Leaking battery liquid could damage the balance.
Connection of mains
adapter
EOS_F-BA-e-1310
13
Fig. Battery compartment – platform 314,5 x 304,5 mm:
on the top of the weighing platform (under the weighing surface)
Fig. Battery compartment – platform 550 x 550 mm:
on the bottom of the weighing platform
EOB_F-BA-e-1310
14
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. To
receive accurate measuring values it is also recommended to adjust the balance
periodically in weighing operation.
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization.
EOS_F-BA-e-1310
15
In weighing mode press the UNIT key and keep it pressed until „CAL“ followed
by the weight value of the required adjustment weight in displayed. „LOAd“ is
displayed alternatively.
(Example)
Carefully place the required adjustment weight (see tab. 1 „Technical data“) in
the centre of the weighing plate
Press TARE key, adjustment is started.
(Example)
Wait until the stability display appears, after that the adjustment is finished. The
balance will automatically return to Weighing mode upon successful completion
of the adjustment and will display the weight of the adjustment weight.
(Example)
Take away adjustment weight.
An error message will be displayed in the event of an adjustment error or
incorrect adjustment weight. Remove the adjustment weight and repeat the
adjustment process.
Keep the adjustment close to the balance. Daily control of the weighing
exactness is recommended for quality-relevant applications.
EOB_F-BA-e-1310
16
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.
Set rocker switch next to the platform to „1“.
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.
The data receiving symbol flashes
The triangle displays the selected channel
If the data receiving symbol does not flash, use the CH1-3
button to change to the correct channel
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
Press ON/OFF button, the display disappears
Set rocker switch next to the platform to „0“.
EOS_F-BA-e-1310
17
Weighing
Turn on balance by pressing the ON/OFF key
Position item to be weighed
Wait for stability display
Read weighing result.
Switch over
weighing unit
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“.
EOB_F-BA-e-1310
18
Taring
a)
Place an empty weighing container, the weight of the
weighing container will be displayed.
or
b)
Press the TARE button or touch with your hand the contact-
free taring field, the zero display appears. The indicator []
under [NET] is displayed. The tare weight is saved until it is
deleted.
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 weight of the weighing container will be displayed as a
minus number after removing the weighing container.
The tare weight is saved until it is deleted.
EOS_F-BA-e-1310
19
Delete tare
or
Unload the balance and press the TARE button, or touch
the taring field with your hand, the zero display appears.
The contact-free taring function can be switched on or switched off via the
menu (see chap.10): „t_lr“ on „ON“ or „OFF“
EOB_F-BA-e-1310
20
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.
Put upon weighing goods and press the HOLD key. In the
display the indicator [] starts flashing. During this time the
balance takes up several measured values and displays
then the calculated mean value.
This value remains in the display until the HOLD button is
pressed again. The indicator [] under [HOLD] goes out,
the balance returns into normal weighing mode.
Press the HOLD button once more to repeat this function
as often as required.
There is no average value calculation in the event of too much movement
(heavy display oscillation).
EOS_F-BA-e-1310
21
Plus/minus
weighings
For example for item weight check, production check etc.
switch-on the balance using ON/OFF button and wait for
zero display.
Put the nominal weight on the weighing plate
(Example)
Use the TARE button or the TARE-touchfield for taring to
zero.
Remove the nominal weight.
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).
According to the same procedure also packages with the
same weight can be produced, referring to a nominal
weight.
Back to weighing mode by pressing the TARE button or the
TARE-touchfield.
EOB_F-BA-e-1310
22
Setting channels
(display unit)
+
(platform)
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. The data receiving symbol flashes
The triangle displays the selected channel.
If the data receiving symbol does not appear, use the CH1-3
button to change to the correct channel
Setting the channels on the platform:
Switch-off platform (rocker switch on the side to „0“)
Actuate the dip switch at the lower side of the platform. (pin 4
is not used).
Platform 314,5 x 304, 5 mm:
Platform 550 x 550 mm:
EOS_F-BA-e-1310
23
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.
EOB_F-BA-e-1310
24
10 Menu
Changes are only allowed on the functions (weighing units) and
(automatic switch-off function).
In weighing mode keep TARE button depressed for approx. 3 sec until "SETUP"
is displayed followed by "UNIT"
Press the HOLD button as often as necessary until the required function is
displayed.
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.
To exit the Menu and save, press the HOLD button as often as required until
"END" is displayed and then confirm by pressing TARE. The balance returns
automatically into weighing mode.
Navigation:
Factory settings are marked by *.
EOS_F-BA-e-1310
25
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.
11.2 Service, maintenance
The appliance may only be opened by trained service technicians who are
authorized by KERN.
Before opening, disconnect from power supply.
11.3 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.
12 Error messages, troubleshooting guide
Error message
Function
LO
Capacity of batteries display unit exhausted
LO d
Capacity of batteries platform exhausted
ErrE
EEPROM error display unit
ErrEd
EEPROM error platform
Err
Overload
ErrL
Minimum weight under min. value
EOB_F-BA-e-1310
26
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
appear.
The balance is not switched on.
The mains supply connection has been
interrupted (mains cable not plugged
in/faulty).
Power supply interrupted.
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 value is obviously
wrong
The display of the balance is not at zero
Adjustment is no longer correct.
The balance is on an uneven surface.
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.
EOS_F-BA-e-1310
27
13 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
Declaration of -Conformity
EG-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 Balance: KERN EOB_F
EU Directive
Standards
2004/108/EC
EMC
EN 61000-6-3:2007
EN 61000-6-1:2007
2006/95/EC
LVD
EN 60950:2006+A11:2009
R&TTE
1999/5/EC
EN 301 489-17 v2.1.1
EN 301 489-1 v1.8.1
Signatur
Signature
Datum
Date
25.07.2013
Ort der Ausstellung
Place of issue
72336 Balingen
Albert Sauter
KERN & Sohn GmbH
Geschäftsführer
Managing director
KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0
Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com
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