KERN KERN 440 User manual

GB KERN 440
Version 3.4 01/2006
Operating Instructions
Precision balance
Tabel of contents:
1Technical data_________________________________________________ 30
2Declaration of conformity _______________________________________ 34
3Fundamental information (general)________________________________ 35
3.1 Intended use ____________________________________________________ 35
3.2 Inappropriate use ________________________________________________ 35
3.3 Guarantee ______________________________________________________ 35
3.4 Monitoring the test substances_____________________________________ 36
4Fundamental safety information __________________________________ 36
4.1 Observe the information in the operating instructions__________________ 36
4.2 Staff training ____________________________________________________ 36
5Transport and storage __________________________________________ 36
5.1 Acceptance check _______________________________________________ 36
5.2 Packaging ______________________________________________________ 36
6Unpacking, installation and commissioning ________________________ 37
6.1 Place of installation, place of use___________________________________ 37
6.2 Unpacking ______________________________________________________ 37
6.2.1 Installation __________________________________________________________ 37
6.2.2 List of items supplied __________________________________________________ 38
6.3 Mains supply____________________________________________________ 38
6.4 Battery Operation ________________________________________________ 38
6.5 Connecting peripheral equipment __________________________________ 39
6.6 Initial start-up ___________________________________________________ 39
6.7 Adjustment _____________________________________________________ 39
6.8 Adjusting_______________________________________________________ 39
6.9 Underfloor weighing______________________________________________ 40

440-BA-defsi-0634 29
7Operation_____________________________________________________ 41
7.1 Overview of display ______________________________________________ 41
7.2 Weighing _______________________________________________________ 41
7.3 Taring__________________________________________________________ 41
7.4 Plus / Minus Weighings ___________________________________________ 42
7.5 Piece counting __________________________________________________ 42
7.6 Gross-total Weighings ____________________________________________ 43
7.7 Percentage weighing _____________________________________________ 43
7.8 Weighing units __________________________________________________ 44
7.9 Rear illuminated display __________________________________________ 45
8Settings ______________________________________________________ 46
8.1 Menu structure:__________________________________________________ 46
8.2 Dosage und Zero-tracking_________________________________________ 47
8.3 Select the adjusting weight ________________________________________ 47
8.4 RS 232 C Data output via interface RS 232 C__________________________ 48
8.4.1 Data transfer mode____________________________________________________ 48
8.4.2 Baudrate____________________________________________________________ 48
9Interface RS 232 C _____________________________________________ 49
9.1 Technical Data __________________________________________________ 49
9.2 Description of the jack____________________________________________ 49
9.3 Description of the data transfer ____________________________________ 49
9.3.1 Pr PC______________________________________________________________ 49
9.3.2 AU Pr______________________________________________________________ 49
9.3.3 AU PC _____________________________________________________________ 50
9.3.4 rE Cr ______________________________________________________________ 50
10 Maintenance, upkeep, disposal _________________________________ 51
10.1 Cleaning _______________________________________________________ 51
10.2 Maintenance, upkeep _____________________________________________ 51
10.3 Disposal________________________________________________________ 51
11 Troubleshooting _____________________________________________ 52

440-BA-defsi-0634
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1 Technical data
KERN 440-21N 440-21A 440-33N
Readout 0,001 g 0,001 g 0,01 g
Weighing range 40 g 60 g 200 g
Taring range (subtractive) 40 g 60 g 200 g
Reproducibility 0,001 g 0,001 g 0,01 g
Linearity ±0,003 g ±0,003 g ±0,0 2 g
Min. weight for counting parts 0,002 g 0,002 g 0,02 g
Reference pieces for counting
parts 5, 10, 25, 50
Unites details „Weighing units“capture 7.8
Test weight (included)
The details can be found in
capture 8.3 „Select the adjusting
weight“
20g (F2) 50g (F2) 100g (M1)
Stabilisation time (typical) 3 sec.
Optimal temp. of operation + 10° C .... + 40° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm 165 x 230 x 80
Weighing plate mm Ø 81 Ø 81 Ø 105
Weight kg (net) 1,0 1,0 1,0
Underfloor weighing - - Standard
Hook for underfloor weighing - - Option

440-BA-defsi-0634 31
KERN 440-35N 440-35A 440-43N 440-45N
Readout 0,01 g 0,01 g 0,1 g 0,1 g
Weighing range 400 g 600 g 400 g 1000 g
Taring range (subtractive) 400 g 600 g 400 g 1000 g
Reproducibility 0,01 g 0,01 g 0,1 g 0,1 g
Linearity ±0,03 g ±0,03 g ±0,2 g ± 0,2 g
Min. weight for counting parts 0,02 g 0,02 g 0,2 g 0,2 g
Reference pieces for counting
parts 5, 10, 25, 50
Unites details „Weighing units“capture 7.8
Test weight (included)
The details can be found in
capture 8.3 „Select the adjust-
ing weight“
200g (M1) 500g (M1) 200 g (M3) 500 g (M2))
Stabilisation time (typical) 3 sec.
Optimal temp. of operation + 10° C .... + 40° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm 165 x 230 x 80
Weighing plate mm Ø 105 Ø 105 130 x 130 130 x 130
Weight kg (net) 1,0 1,0 1,0 1,0
Underfloor weighing Standard
Hook for underfloor weighing Option

440-BA-defsi-0634
32
KERN 440-47N 440-49N 440-49A
Readout 0,1 g 0,1 g 0,1 g
Weighing range 2000 g 4000 g 6000 g
Taring range (subtractive) 2000 g 4000 g 6000 g
Reproducibility 0,1 g 0,1 g 0,1 g
Linearity ± 0,2 g ± 0,3 g ± 0,3 g
Min. weight for counting parts 0,2 g 0,2 g 0,2 g
Reference pieces for counting
parts 5, 10, 25, 50
Unites details „Weighing units“capture 7.8
Test weight (included)
The details can be found in
capture 8.3 „Select the adjusting
weight“
1000 g (M1) 2000 g (M1) 2000 g (M1)
Stabilisation time (typical) 3 sec.
Optimal temp. of operation + 10° C .... + 40° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm 165 x 230 x 80
Weighing plate mm 130 x 130 150 x 170 150 x 170
Weight kg (net) 1,0 1,0 1,0
Underfloor weighing Standard
Hook for underfloor weighing Option

440-BA-defsi-0634 33
KERN 440-51N 440-53N 440-55N
Readout 1 g 1 g 0,2 g
Weighing range 4000 g 6000 g 6000 g
Taring range (subtractive) 4000 g 6000 g 6000 g
Reproducibility 1 g 1 g 0,2 g
Linearity ± 2 g ± 2 g ± 0,6 g
Min. weight for counting parts 2 g 2 g 0,4 g
Reference pieces for counting
parts 5, 10, 25, 50
Unites details „Weighing units“capture 7.8
Test weight (included)
The details can be found in
capture 8.3 „Select the adjust-
ing weight“
1000 g (M3) 1000 g (M3) 1000 g (M1)
Stabilisation time (typical) 3 sec.
Optimal temp. of operation + 10° C .... + 40° C
Humidity max. 80 % (non-condensing)
Size (W x D x H) mm 165 x 230 x 80
Weighing plate mm 150 x 170 150 x 170 150 x 170
Weight kg (net) 1,0 1,0 1,0
Underfloor weighing Standard
Hook for underfloor weighing Option

440-BA-defsi-0634
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2 Declaration of conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postfach 4052
E-Mail: [email protected]
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 marca CE
Dichiarazione di conformità per apparecchi contrassegnati con la marcatura CE
English We hereby declare that the product to which this declaration refers conforms with the fol-
lowing standards.
Deutsch Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nach-
stehenden Normen übereinstimmt.
Français Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Español Manifestamos en la presente que el producto al que se refiere esta declaración est´´a de
acuerdo con las normas siguientes
Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è confor-
me alle norme di seguito citate.
Electronic Balance: KERN 440
Mark applied EU Directive Standards
89/336EEC EMC EN 55022 : 1998+A1 : 2000
EN 61000-3-2 : 2000
EN 61000-3-3 : 1995+A1 : 2001
EN 55024 : 1998+A1 : 2001
Date: 15.10.2004 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149

440-BA-defsi-0634 35
3 Fundamental information (general)
3.1 Intended use
The balance you have acquired serves to determine the weighing value of the mate-
rial 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 ob-
tained.
3.2 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 drain-
ing fluids from a container on the balance.)
Do not leave a permanent load on the weighing plate. This can damage the measur-
ing equipment.
Be sure to avoid impact shock and overloading the balance in excess of the pre-
scribed 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 explo-
sion-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.
3.3 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

440-BA-defsi-0634
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3.4 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 na-
tional normal).
4 Fundamental safety information
4.1 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.
4.2 Staff training
The device may only be operated and looked after by trained members of staff.
5 Transport and storage
5.1 Acceptance check
Please check the packaging immediately upon delivery and the device during un-
packing for any visible signs of external damage.
5.2 Packaging
Please retain all parts of the original packaging in case it should be necessary to re-
turn items at any time.
Only the original packaging should be used for return consignments.
Before despatch, disconnect all attached cables and loose/movable parts.
Apply any intended transport security devices. Secure all parts, e.g. glass windshield,
weighing plate, power unit etc., to prevent slipping and damage.

440-BA-defsi-0634 37
6 Unpacking, installation and commissioning
6.1 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.
6.2 Unpacking
Carefully remove the balance from its packaging, remove the plastic wrapping and
position the balance in its intended working location.
6.2.1 Installation
Install the balance in such a fashion that the weighing plate is absolutely horizontal.
Please make sure that the transportation lock of the models 440-21N and 440-21A
has been removed before placing the weighing plate.