KERN EOB6K5N, EOB15K10N, EOB35K20N, EOB60K50N, EOB60K50NL Operation Instructions Manual
...
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Operation instructions
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Platform/floor scales
KERN EOB/EOE/EOS/BOBP
Version 2.0
11/2006
GB
EOB/EOE/EOS/BOBP-BA-e-0620
GB
KERN EOB/EOE/EOS/BOBP
Version 2.0 11/2006
Operation instructions
Platform/floor scales
Tabel of contents:
1 Technical data ................................................................................................... 4
2 Declaration of conformty................................................................................ 10
3 Appliance Overview ........................................................................................ 11
4 Fundamental information (general) ...............................................................
4.1 Intended use .........................................................................................................13
4.2 Inappropriate use .................................................................................................13
4.3 Guarantee..............................................................................................................13
4.4 Monitoring the test substances...........................................................................14
5 Fundamental safety information.................................................................... 14
5.1 Observe the information in the operating instructions.....................................14
5.2 Staff training .........................................................................................................14
6 Transport and storage .................................................................................... 14
13
6.1 Acceptance check ................................................................................................14
6.2 Packaging..............................................................................................................14
7 Unpacking, installation and commissioning.................................................
7.1 Place of installation, place of use.......................................................................15
7.2 Installation.............................................................................................................16
7.2.1 Unpacking the Balance....................................................................................................16
7.2.2 Package volume.............................................................................................................. 16
7.2.3 Mounting instructions for using wall bracket.................................................................... 17
7.3 Mains supply.........................................................................................................17
7.4 Battery Operation .................................................................................................17
7.5 Initial start-up........................................................................................................18
7.6 Adjustment............................................................................................................18
7.7 Adjusting...............................................................................................................18
8 Operation .........................................................................................................
8.1 Weighing ...............................................................................................................19
8.2 Taring (TARE key).................................................................................................19
15
19
8.3 Hold function (Animal weighing function) .........................................................20
2
EOB/EOE/EOS/BOBP-BA-e-0620
8.4 Plus / Minus Weighings........................................................................................20
8.5 Weight units..........................................................................................................20
9 Maintenance, upkeep, disposal...................................................................... 21
9.1 Cleaning ................................................................................................................21
9.2 Maintenance, upkeep ...........................................................................................21
9.3 Disposal.................................................................................................................21
10 Troubleshooting........................................................................................... 22
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
3
1 Technical data
KERN
Readout (d) 5 g 10 g 20 g 50 g
Weighing range (Max) 6 kg 15 kg 35 kg 60 kg
Reproducibility 5 g 10 g 20 g 50 g
Linearity 10 g 20 g 40 g 100 g
EOB
6K5N
EOB
15K10N
EOB
35K20N
EOB
60K50N
Recommended adjusting
weight, not included
(class)
Stabilisation time (typical) 2 - 3 sec.
Optimal temp. of
operation
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm
Weighing plate mm 310 x 300
Weight kg (net) 4
5 kg
(M3)
310 x 300 x 55 (platform)
210 x 110 x 45 (terminal)
10 kg
(M3)
+ 10° C .... + 35° C
20 kg
(M3)
310 x 300 x 55 (platform)
210 x 110 x 45 (terminal)
40 kg
(M3)
4
EOB/EOE/EOS/BOBP-BA-e-0620
KERN
EOB
60K50NL
EOB
150K100N
EOB
150K100NL
EOB
150K100NXL
Readout (d) 50 g 100 g 100 g 100 g
Weighing range (Max) 60 kg 150 kg 150 kg 150 kg
Reproducibility 50 g 100 g 100 g 100 g
Linearity 100 g 200 g 200 g 200 g
Recommended adjusting
weight, not included
40 kg
(M3)
100 kg
(M3)
100 kg
(M3)
100 kg
(M3)
(class)
Stabilisation time (typical) 2 – 3 sec.
Optimal temp. of
operation
+ 10° C .... + 35°
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm
Stainless steel
weighing plate (mm)
platform:
550 x 550 x 65
terminal:
210 x 110 x 45
550 x 550 310 x 300 550 x 550
platform:
310 x 300 x 55
terminal:
210 x 110 x 45
platform:
550 x 550 x 65
terminal:
210 x 110 x 45
platform:
945 x 505 x 65
terminal:
210 x 110 x 45
945 x 505
Weight kg (net) 15 4 15 22,0
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
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KERN
EOB
300K100N
EOB
300K200NL
EOB
300K200NXL
Readout (d) 100 g 200 g 200 g
Weighing range (Max) 300 kg 300 kg 300 kg
Reproducibility 100 g 200 g 200 g
Linearity 400 g 400 g 400 g
Recommended adjusting
weight, not included
200 kg
(M2)
200 kg
(M3)
200 kg
(M3)
(class)
Stabilisation time (typical) 2 - 3 sec.
Optimal temp. of
operation
+ 10° C .... + 30° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm
Stainless steel
weighing plate (mm)
platform:
310 x 300x 55
terminal:
210 x 110 x 45
310 x 300 550 x 550 945 x 505
platform:
550 x 550 x 65
terminal:
210 x 110 x 45
platform:
945 x 505 x 65
terminal:
210 x 110 x 45
Weight kg (net) 4 15 22,0
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KERN
EOE
150K100L
EOE
150K100XL
EOE
300K200L
EOE
300K200XL
Readout (d) 100 g 100 g 200 g 200 g
Weighing range (Max) 150 kg 150 kg 300 kg 300 kg
Reproducibility 100 g 100 g 200 g 200 g
Linearity 200 g 200 g 400 g 400 g
Recommended adjusting
weight, not included
100 kg
(M3)
100 kg
(M3)
200 kg
(M3)
200 kg
(M3)
(class)
Stabilisation time (typical) 2 - 3 sec.
Optimal temp. of
operation
+ 10° C .... + 35° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm
Weighing platform,
lacquered ( mm)
platform:
505 x 505 x 65
terminal:
210 x 110 x 45
505 x 505
platform:
945 x 505 x 65
terminal:
210 x 110 x 45
platform:
505 x 505 x 65
terminal:
210 x 110 x 45
platform:
945 x 505 x 65
terminal:
210 x 110 x 45
945 x 505 505 x 505 945 x 505
Weight kg (net) 14 22,0 14 22,0
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
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KERN
Readout (d) 100 g 200g
Weighing range (Max) 150 kg 300kg
Reproducibility 100 g 200 g
Linearity 200 g 400 g
Recommended adjusting
weight, not included
(class)
Stabilisation time
(typical)
Optimal temp. of
operation
Humidity max. 80 % (non-condensing)
EOS
150K100NXL
100 kg (M3) 200 kg (M3)
2 - 3 sec.
+ 10° C .... + 35° C
EOS
300K200NXL
900 x 550 x 65 (plattform)
Size (W x D x H) mm
210 x 110 x 45 (terminal)
Stainless steel
weighing plate (mm)
Weight kg (net) 22,5
900 x 550 x 65
8
EOB/EOE/EOS/BOBP-BA-e-0620
KERN
Readout (d) 200 g 500 g
Weighing range (Max) 300 kg 750 kg
Reproducibility 200 g 500 g
Linearity 400 g 1000 g
Recommended adjusting
weight, not included
(class)
Stabilisation time (typical) 2 - 3 sec.
Optimal temp. of
operation
Humidity max. 80 % (nicht kondensierend)
Size (W x D x H) mm
BOBP
300K200
200 kg
(M3)
+ 5° C .... + 35° C
1000 x 1000 x 90 (Plattform)
210 x 110 x 45 (Terminal)
BOBP
750K500
500 kg
(M3)
Weighing plate mm 1000 x 1000 x 90
Weight kg (net) 50,5
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
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2 Declaration of conformty
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
Declaration of conformity for apparatus with CE mark
Konformitätserklärung für Geräte mit CE-Zeichen
Déclaration de conformité pour appareils portant la marque CE
Declaración de conformidad para aparatos con disitintivo CE
Dichiarazione di cofnromitá per apparecchi contrassegnati con la marcatura CE
English
Deutsch
Français
Español
Italiano
We hereby declare that the product to which this declaration refers conforms with the following standards.
Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt.
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Manifestamos en la presente que el producto al que se refiere esta declaración est´´a de
acuerdo con las normas siguientes
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate.
Platform Scale: KERN EOB/EOE/EOS/BOBP
Mark applied EU Directive Standards
89/336EEC EMC EN 61000-6-3 : 2001+A11 :2004
EN 61000-6-1 : 2001
Date: 17. Nov. 2006 Signature:
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
Gottl. KERN & Sohn GmbH
Management
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EOB/EOE/EOS/BOBP-BA-e-0620
3 Appliance Overview
EOB models, stainless steel weighing plate
EOB models with stand (option),
only models with weighing plate 310 x 300
EOE models, weighing plate, lacquered
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
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EOS models, Stainless steel weighing plate
BOBP models
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4 Fundamental information (general)
4.1 Intended use
The balance you have acquired serves to determine the weighing value of the 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. The weighing value can be read off after a stable weighing value has been obtained.
4.2 Inappropriate use
Do not use the 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 a permanent load on the weighing plate. This can damage the measuring equipment.
Be sure to avoid impact shock and overloading the balance in excess of the prescribed maximum load rating (max.), minus any possible tare weight that is already
present. This could cause damage to the balance.
Never operate the balance in hazardous locations. The series design is not explosion-proof.
Structural alterations may not be made to the balance. This can lead to incorrect
weighing results, faults concerning safety regulations as well as to destruction of the
balance.
The balance may only be used in compliance with the described guidelines. Varying
areas of application/planned use must be approved by KERN in writing.
4.3 Guarantee
The guarantee is not valid following
- non-observation of our guidelines in the operating instructions
- use outside the described applications
- alteration to or opening of the device
- mechanical damage and damage caused by media, liquids
- natural wear and tear
- inappropriate erection or electric installation
- overloading of the measuring equipment
EOB/EOE/EOB/EOS/BOBP-BA-e-0620
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4.4 Monitoring the test substances
The metrology features of the balance and any possible available adjusting weight
must be checked at regular intervals within the scope of quality assurance. For this
purpose, the answerable user must define a suitable interval as well as the nature
and scope of this check. 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. Test weights and balances can be adjusted quickly and at
a reasonable price in KERN’s accredited DKD calibration laboratory (return to national normal).
5 Fundamental safety information
5.1 Observe the information in the operating instructions
Please read the operating instructions carefully before erecting and commissioning,
even if you already have experience with KERN balances.
5.2 Staff training
The device may only be operated and looked after by trained members of staff.
6 Transport and storage
6.1 Acceptance check
Please check the packaging immediately upon delivery and the device during unpacking for any visible signs of external damage.
6.2 Packaging
Please retain all parts of the original packaging in case it should be necessary to return items at any time.
Only the original packaging should be used for return consignments.
Before despatch, disconnect all attached cables and loose/movable parts.
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7 Unpacking, installation and commissioning
7.1 Place of installation, place of use
The balance is constructed in such a way that reliable weighing results can be
achieved under normal application conditions.
By selecting the correct location for your balance, you will be able to work quickly and
precisely.
Therefore please observe the following at the place of installation:
- 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, vapours and dust;
- Do not expose the device to extreme dampness for longer periods of time. In-
admissible bedewing (condensation of air moisture on the device) can occur if
a cold device is taken into a significantly warmer environment. In this case,
please acclimatise the device for approx. 2 hours at room temperature after it
has been disconnected from the mains.
- Avoid static charging of the material to be weighed, weighing container and
windshield.
Major display deviations (incorrect weighing results) are possible if electromagnetic
fields occur as well as due to static charging and instable power supply. It is then necessary to change the location.
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7.2 Installation
Install the balance in such a fashion that the weighing plate is absolutely horizontal.
7.2.1 Unpacking the Balance
Carefully remove the balance from the packaging and out of the plastic covering,
then place the balance on the assigned position.
7.2.2 Package volume
Serial fittings:
KERN EOB
• Platform (stainless steel weighing plate) and display device
• 4 x Adjusting feet (except platform 310 x 300)
• Mains device
• Wall bracket (with anchoring screws
• Operating instructions
KERN EOE
• Platform and display device
• 4 x Adjusting feet
• Mains device
• Wall bracket (with anchoring screws
• Operating instructions
KERN EOS
• Platform (stainless steel weighing plate) and display device
• 4 x Adjusting feet
• Mains device
• Rubber mat
• Wall bracket (with anchoring screws)
• Operating instructions
KERN BOBP
• Platform and display device
• 4 x Adjusting feet
• Mains device
• Wall bracket (with anchoring screws
• Operating instructions
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7.2.3 Mounting instructions for using wall bracket
7.3 Mains supply
Electric power supply is by means of the external mains supply circuit. The printed
voltage level must comply with the local voltage.
Only use original KERN mains supply circuits. The use of other makes is subject to
approval by Kern.
7.4 Battery Operation
Remove the battery cover underneath the display. Connect 6 x 1,5V round cells. Reinsert the battery cover.
Battery conservation through automatic power-off 3 minutes after ending a weighing
operation.
When the battery power is used up the display will show “LO“. Press the OFF key
and change the batteries at once.
When the balance is not in use for a longer period of time remove batteries and keep
them separately. Leakage of battery liquid might damage the balance.
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7.5 Initial start-up
A warm-up time of 5 minutes stabilises the measured values after switching on.
The accuracy of the balance depends on the local acceleration of the fall.
Please be sure to observe the information in the chapter on adjusting.
7.6 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 during the initial start-up, after change in location and variation of surrounding temperature. It is also recommendable to adjust
the balance periodically during weighing operation in order to obtain exact measured
values
7.7 Adjusting
Balance accuracy can be checked and adjusted at any time using an adjusting
weight.
Method of adjusting:
Observe stable ambience conditions. A short warming-up time of approx. 5 minutes
for stabilisation purposes is useful.
Press UNIT key and hold depressed until the exact size of the adjusting weight
flashes on the display panel, “Load” appears on the display panel alternately.
Place the adjusting weight in the centre of the weighing plate. Press UNIT key.
The value of the size of the adjusting weight will stabilise a short time later.
Keep the adjusting weight next to the balance. A daily balance accuracy check is
recommended for applications relevant to quality.
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8 Operation
8.1 Weighing
Switch the balance on by pressing the ON/ key.
The balance will show “88888“ for approx. 3 seconds and then change to “0“. Now it
is ready for use.
Important: If the display does not show “0“ press the TARE key.
Only now (!) place object on the weighing pan. Make sure that the weighing object
does not stripe or touch the housing or base.
Now the weight will be indicated.
If the object should be heavier than the weighing range allowance, the symbol
Err(overload) will appear on the display.
8.2 Taring (TARE key)
Switch the balance on by pressing the ON key, then wait for the “0“ indication.
Place the jiffy on the weighing pan and press the TARE key. Display again shows “0“.
Now the weight of the jiffy is memorised internally.
By pressing the TARE key after a weighing procedure, “0“ will appear on the display
again.
The taring procedure can be repeated continuously, for instance when mixing several
components.
The limit is reached when the full weighing range is overlaid.
After having removed the jiffy the total weight will appear as a minus indication.
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8.3 Hold function (Animal weighing function)
The balance has an integrated animal weighing function (mean value) with which it is
possible to weigh small or domestic animals (minimum weight 1% of max.) precisely,
even when they do not stand still on the weighing platform.
Remark: With to lively movement (strong diplay fluctuation) no mean value
can take place.
Place the animal to be weighed on the weighing platform and press the HOLD key.
A triangle will start to flash on the left hand side of the display, and during this time
the balance will record several values, then calculate and display an mean value.
By pressing the HOLD key again, the weighing machine will be reset to standard
weighing mode.
By pressing the HOLD key again, this function can be repeated as often as desired.
8.4 Plus / Minus Weighings
For instance to control piece-weights, filling process control etc.
Switch the balance on by pressing the ON key, then wait until “0“ is indicated.
Place rated weight on the weighing pan and tare on “0“ by pressing the TARE key.
Remove rated weight.
Place the objects on the weighing pan successively, the balance will show any devia-
tion from the rated weight in “+“ and “-“.
According to the same procedure packages with the same weight, related to a rated
weight, can be produced.
Return to the weighing mode by pressing the TARE key.
8.5 Weight units
Two units are available: “kg“ and “lb“.
The weight unit is chosen by pressing the ”Unit” key.
A lamp to the right of the display signalises the respective unit.
Unit conversion: 1 kg = 2.20462 lb
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9 Maintenance, upkeep, disposal
9.1 Cleaning
Please disconnect the device from the operating voltage before cleaning.
Only use a cloth dampened with mild suds and not aggressive cleaning agents (solvents or similar). Please ensure that fluids are not able to get into the device and rub
off using a clean, soft cloth.
Loose sample residue/powder can be removed carefully using a brush or hand vacuum cleaner.
Remove any spilt material to be weighed immediately.
9.2 Maintenance, upkeep
The device may only be opened by trained service engineers authorised by KERN.
Disconnect from the mains supply before opening.
9.3 Disposal
The operating company shall dispose of the packaging and the device in compliance
with the valid national or regional law of the operating location.
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10 Troubleshooting
The balance should be switched off for a short time following an interruption in the
programme sequence and disconnected from the mains supply. It is then necessary
to repeat the weighing process from the beginning.
Help:
Interruption Possible cause
Weight display is not illuminated.
The weight display changes continually
The weighing result is obviously incorrect
• The balance is not switched on.
• The mains supply connection has been
interrupted (mains cable not plugged
in/faulty).
• Power supply interrupted. .
• Draught/air movement
• Table/floor vibrations
• The weighing plate is in contact with for-
eign matter.
• Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
• The balance display is not set to zero
Switch the balance off if other error messages should appear and then switch on
again. Contact the manufacturer if the error message does not disappear.
22
• Adjustment is no longer correct.
• Great fluctuations in temperature.
• Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
EOB/EOE/EOS/BOBP-BA-e-0620
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