Kern 440-33N, 440-21A, 440-21N User Manual
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Operating instruction
Precision balances
KERN 440
Version 4.1
09/2009
GB
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
440-BA-e-0941
GB
KERN 440
Version 4.1 09/2009
Operating instruction
Precision balances
Table of Contents
1 Technical data................................................................................................ 4
2 Declaration of conformity ............................................................................. 8
3 Basic Information (General).......................................................................... 9
3.1 Proper use.................................................................................................................................9
3.2 Improper Use ............................................................................................................................ 9
3.3 Warranty.................................................................................................................................... 9
3.4 Monitoring of Test Resources............................................................................................... 10
4 Basic Safety Precautions............................................................................ 10
4.1 Pay attention to the instructions in the Operation Manual................................................ 10
4.2 Personnel training..................................................................................................................10
5 Transport and storage................................................................................. 10
5.1 Testing upon acceptance...................................................................................................... 10
5.2 Packaging................................................................................................................................ 10
6 Unpacking, Setup and Commissioning ..................................................... 11
6.1 Installation Site, Location of Use.......................................................................................... 11
6.2 Unpacking...............................................................................................................................11
6.2.1 Setup ........................................................................................................................................11
6.2.2 Scope of delivery......................................................................................................................12
6.3 Mains connection................................................................................................................... 12
6.4 Operation using a (rechargeable) battery (optional)..........................................................12
6.5 Connection of peripheral devices......................................................................................... 13
6.6 Initial Commissioning............................................................................................................ 13
6.7 Adjustment..............................................................................................................................13
6.8 Adjustment..............................................................................................................................13
6.9 Underfloor weighing .............................................................................................................. 14
7 Operation...................................................................................................... 15
7.1 Overview of display................................................................................................................ 15
7.2 Weighing ................................................................................................................................. 15
7.3 Taring....................................................................................................................................... 16
7.4 PRE-Tare function.................................................................................................................. 16
7.5 Plus/minus weighings............................................................................................................16
7.6 Parts counting ........................................................................................................................ 17
7.7 Net-total weighings ................................................................................................................18
7.8 Percent weighings.................................................................................................................. 18
7.9 Weighing units (Unit) .............................................................................................................19
7.10 Display background illumination..........................................................................................20
7.11 Animal weighing function...................................................................................................... 21
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440-BA-e-0941
8 Settings......................................................................................................... 22
8.1 Call-up menu structure..........................................................................................................22
8.2 Leave menu structure............................................................................................................23
8.3 Dosing and Zero-tracking......................................................................................................23
8.4 Selection of the adjustment weight...................................................................................... 24
8.5 Interface RS232C....................................................................................................................25
8.5.1 Data transfer mode................................................................................................................... 25
8.5.2 Baud rate.................................................................................................................................. 25
8.6 Selection printed edition .......................................................................................................26
8.7 Reset to factory setting ......................................................................................................... 27
9 Data output RS 232 C .................................................................................. 28
9.1 Technical data......................................................................................................................... 28
9.2 Pin allocation of the balance output socket (front view), .................................................. 28
9.3 Explanation of the data transfer ........................................................................................... 28
9.3.1 Pr PC........................................................................................................................................ 28
9.3.2 AU Pr....................................................................................................................................... 28
9.3.3 AU PC...................................................................................................................................... 29
9.3.4 rE Cr ........................................................................................................................................29
9.4 Output on bar code printer....................................................................................................30
10 Service, maintenance, disposal.................................................................. 31
10.1 Cleaning .................................................................................................................................. 31
10.2 Service, maintenance............................................................................................................. 31
10.3 Disposal................................................................................................................................... 31
11 Instant help................................................................................................... 32
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1 Technical data
KERN 440-21N 440-21A 440-33N
Readability (d) 0.001 g 0.001 g 0.01 g
Weighing range (max) 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 ± 0.02 g
Minimum unit weight at
piece counting
Warm-up time 2 hours 2 hours 30 minutes
Reference quantities at
piece counting
Weighing Units
Recommended adjustment weight,
not added (class)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 165 x 230 x 80
0.002 g 0.002 g 0.02 g
5, 10, 25, 50
Details „Weighing units“ chapter 7.9
40g (F1) 50g (F2) 200g (M1)
Weighing plate mm Ø 81 Ø 81 Ø 105
Weight kg (net) 1.0 1.0 1.0
Underfloor weighing - - Standard
Flush-mounted hook - - Option
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440-BA-e-0941
KERN 440-35N 440-35A 440-43N 440-45N
Readability (d) 0.01 g 0.01 g 0.1 g 0.1 g
Weighing range (max) 400 g 600 g 400 g 1,000 g
Taring range (subtractive) 400 g 600 g 400 g 1,000 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
Minimum unit weight at
piece counting
Warm-up time 2 hours 2 hours 10 minutes 30 minutes
Reference quantities at
piece counting
Weighing Units
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 165 x 230 x 80
0.02 g 0.02 g 0.2 g 0.2 g
5, 10, 25, 50
Details „Weighing units“ chapter 7.9
400g (F2) 500g (F2) 400 g (M2) 1,000 g (M1)
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
Flush-mounted hook Option
440-BA-e-0941
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KERN 440-47N 440-49N 440-49A
Readability (d) 0.1 g 0.1 g 0.1 g
Weighing range (max) 2,000 g 4,000 g 6,000 g
Taring range (subtractive) 2,000 g 4,000 g 6,000 g
Reproducibility 0.1 g 0.1 g 0.1 g
Linearity ± 0.2 g ± 0.3 g ± 0.3 g
Minimum unit weight at piece
count
Warm-up time 30 minutes 2 hours 2 hours
Reference unit weights at piece
count
Weighing Units
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 165 x 230 x 80
0.2 g 0.2 g 0.2 g
5, 10, 25, 50
Details „Weighing units“ chapter 7.9
2,000 g (M1) 4,000 g (F2) 5,000 g (F2)
Weighing plate mm 130 x 130 150 x 170 150 x 170
Weight kg (net) 1.0 1.0 1.0
Underfloor weighing Standard
Flush-mounted hook Option
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KERN 440-51N 440-53N 440-55N
Readability (d) 1 g 1 g 0.2 g
Weighing range (max) 4,000 g 6,000 g 6,000 g
Taring range (subtractive) 4,000 g 6,000 g 6,000 g
Reproducibility 1 g 1 g 0.2 g
Linearity ± 2 g ± 2 g ± 0.6 g
Minimum unit weight at piece
count
Warm-up time 10 minutes 30 minutes 2 hours
Reference unit weights at piece
count
Weighing Units
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 165 x 230 x 80
2 g 2 g 0.4 g
5, 10, 25, 50
Details „Weighing units“ chapter 7.9
4,000 g (M2) 5,000 g (M2) 5,000 g (F2)
Weighing plate mm 150 x 170 150 x 170 150 x 170
Weight kg (net) 1.0 1.0 1.0
Underfloor weighing Standard
Flush-mounted hook Option
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2 Declaration of conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postbox 4052
email: info@kern-sohn.de
Phone: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
Declaration of conformity
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
Deutsch
Français
Español
Italiano
We hereby declare that the product to which this declaration refers conforms to 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 está 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.
Electronic Balance: KERN 440
Mark applied EU Directive Standards
89/336EEC EMC EN 55022 : 1998+A1 : 2000
Date: 15.12.2005 Signature:
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
EN 61000-3-2 : 2000
EN 61000-3-3 : 1995+A1 : 2001
EN 55024 : 1998+A1 : 2001
Gottl. KERN & Sohn GmbH
Management
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440-BA-e-0941
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 weighings. 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
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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.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transport and 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
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.
Before sending, disconnect all connected cables and loose/movable parts.
Attach possibly existing transport safeguards. Secure all parts, e.g. weighing plate,
power unit etc., to prevent slipping and damage.
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