KERN EOB_F User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: [e-mail]
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
KERNEOB_F
Version 1.0 07/2013
Operating instructions Platform/floor scales
Contents
1Technical Data ............................................................................................... 3
2Appliance overview ....................................................................................... 5
3Overview of display....................................................................................... 6
3.1 Keyboard overview .................................................................................................... 7
4Basic Information (General).......................................................................... 8
4.1 Proper use................................................................................................................. 8
4.2 Improper Use............................................................................................................. 8
4.3 Warranty.................................................................................................................... 8
4.4 Monitoring of Test Resources.................................................................................... 9
5Basic Safety Precautions.............................................................................. 9
5.1 Pay attention to the instructions in the Operation Manual .......................................... 9
5.2 Personnel training...................................................................................................... 9
6Transportation & Storage.............................................................................. 9
6.1 Testing upon acceptance........................................................................................... 9
6.2 Packaging / return transport ...................................................................................... 9
7Unpacking, 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
8Adjustment................................................................................................... 14
9Operation 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
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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

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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
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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.

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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.