KERN RPB 15K5M User manual

GB KERN RPB
Version 1.0 12/2005
Operating Manual
Price calculating balance
Contents
1Technical data ________________________________________________________31
2Declaration of conformity _______________________________________________33
3Appliance overview_____________________________________________________33
3.1 Overview of display _____________________________________________________ 37
3.1.1 Display weight ______________________________________________________________ 38
3.1.2 Display basic price ___________________________________________________________ 38
3.1.3 Display sales price____________________________________________________________ 38
3.2 Keyboard overview _____________________________________________________ 39
4Basic Information (General) _____________________________________________40
4.1 Proper use_____________________________________________________________ 40
4.2 Improper Use __________________________________________________________ 40
4.3 Warranty _____________________________________________________________ 40
4.4 Monitoring of Test Resources_____________________________________________ 41
5Basic Safety Precautions ________________________________________________41
5.1 Pay attention to the instructions in the Operation Manual _____________________ 41
5.2 Personnel training ______________________________________________________ 41
6Transport and storage __________________________________________________41
6.1 Testing upon acceptance _________________________________________________ 41
6.2 Packaging _____________________________________________________________ 41
7Unpacking, Setup and Commissioning_____________________________________42
7.1 Installation Site, Location of Use __________________________________________ 42
7.2 Unpacking_____________________________________________________________ 42
7.2.1 Setup ______________________________________________________________________ 42
7.2.2 Scope of delivery ____________________________________________________________ 43
7.3 Mains connection _______________________________________________________ 43
7.4 Battery power supply____________________________________________________ 43
7.5 Initial Commissioning ___________________________________________________ 43
7.6 Adjustment ____________________________________________________________ 44
7.7 Verification____________________________________________________________ 46
7.7.1 Jumper and seals _____________________________________________________________ 47

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8Operation ____________________________________________________________48
8.1 Switch on/off and set zero ________________________________________________ 48
8.2 Simple weighing ________________________________________________________ 48
8.3 Weighing with taring____________________________________________________ 49
8.4 Weighing with price determination ________________________________________ 50
8.4.1 Manual input of a basic price ___________________________________________________ 50
8.4.2 Saving and calling up a basic price_______________________________________________ 50
8.5 AUTO CLEAR_________________________________________________________ 52
9Display background illumination _________________________________________52
10 AUTO SLEEP-function_______________________________________________53
11 Service, maintenance, disposal _________________________________________54
11.1 Cleaning ______________________________________________________________ 54
11.2 Service, maintenance ____________________________________________________ 54
11.3 Disposal_______________________________________________________________ 54
12 Instant help_________________________________________________________55

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1 Technical data
KERN RPB 6K2M RPB 6K2HM RPB 15K5M
Readability (d) 2 g 2 g 5 g
Weighing range (max) 6 kg 6 kg 15 kg
Minimum load 40 g 40 g 100 g
Verification value 2 g 2 g 5 g
Verification class III III III
Reproducibility 2 g 2 g 5 g
Linearity ± 4 g ± 4 g ± 10 g
Stabilization time 2 sec. 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 5 kg (M2) 5 kg (M2) 10 kg (M2)
Net weight (kg) 4,3 5,2 4,3
Dimensions of the housing
(B x D x H) 315 x 355 x 110
315 x 355 x 110
without tripod
315 x 355 x 540
with tripod
315 x 355 x 110
Weighing plate, stainless
steel 225 x 275 mm
Weighing unit €/kg; €/g
Permissible ambient condi-
tion -10° C to 40° C
Humidity of air max. 80 % relative (not condensing)
Voltage 230 V
Battery Operating time ca. 70 hrs. / loading time ca. 12 hrs.

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KERN RPB 15K5HM RPB 30K10M RPB 30K10HM
Readability (d) 5 g 10 g 10 g
Weighing range (max) 15 kg 30 kg 30 kg
Minimum load 100 g 200 g 200 g
Verification value 5 g 10 g 10 g
Verification class III III III
Reproducibility 5 g 10 g 10 g
Linearity ± 10 g ± 20 g ± 20 g
Stabilization time 2 sec. 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 10 kg (M2) 20 kg (M2) 20 kg (M2)
Net weight (kg) 5,2 4,3 5,2
Dimensions of the housing
(B x D x H)
315 x 355 x 110
without tripod
315 x 355 x 540
with tripod
315 x 355 x 110
315 x 355 x 110
without tripod
315 x 355 x 540
with tripod
Weighing plate, stainless
steel 225 x 275 mm
Weighing unit €/kg; €/g
Permissible ambient condi-
tion -10° C to 40° C
Humidity of air max. 80 % relative (not condensing)
Voltage 230 V
Battery Operating time ca. 70 hrs. / loading time ca. 12 hrs.

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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 conformitá 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 Scale: KERN RPB
Mark applied EU Directive Standards
89/336/EEC EMC
73/23/EEC Low Voltage
EN 50081-1
EN 50082-1
EN 60950
Date: 27.12.2005 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

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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
Konformitätserklärungen
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 conformitá 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.
This declaration is only valid with the certificate of conformity by a notified body.
Deutsch Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nach-
stehenden Normen übereinstimmt.
Diese Erklärung gilt nur in Verbindung mit der Konformitätsbescheinigung einer
benannten Stelle.
Français Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente
déclaration, est conforme aux normes citées ci-après.
Cette déclaration est valide seulement avec un certificat de conformité d´un orga-
nisme notifié.
Español Manifestamos en la presente que el producto al que se refiere esta declaración está de
acuerdo con las normas siguientes.
Esta declaración solo será válida acompañada del certificado de conformidad de
conformidad de la parte nominal.
Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è confor-
me alle norme di seguito citate.
Questa dichiarazione sarà valida solo se accompagnata dal certificato di conformità
della parte nominale.
Model: KERN RPB
EU Directive Standards EC-type-approval certificate no. Issued by
90/384/EEC EN 45501 T6860 NMI
Date: 27.12.2005 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. [phone],Fax [phone]

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Mains cable connection
Air bubble
Second display on customer's side
Battery
compartment
3 Appliance overview
Models without vertical display:
ON/OFF switch

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Mains cable connection
Air bubble
Models with vertical display:
ON/OFF switch Backside
Rotatable vertical
display

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3.1 Overview of display
Operator display balance:
Weight Basic price Sales price
Vertical display for models with tripod:
Weight
Basic price
Sales price

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3.1.1 Display weight
Here, the weight of your goods is displayed.
The arrows above the symbols show:
Battery very low
NET Net weight
Stability display
aZeroing display
3.1.2 Display basic price
Here, enter your basic price in €/kg or €/100 g via keyboard. The basic price can be
switched to €/kg or €/100 g.
The arrows above the symbols show:
AUTO CLEAR Set basic price is deleted automatically
when balance is unloaded
€/100 g Saved basic price in €/100 g
€/kg Saved basic price in €/kg
3.1.3 Display sales price
Here the sales price is displayed in Euro [€].

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3.2 Keyboard overview
Choice Function
•Number keys, enter basic price /PLU
•Delete key
•Saving and calling up the three most frequently used
PLU values
•Saving and calling up the other PLU values
•Taring key
•Save
•Zeroing key
•Back to weighing mode
•Set basic price is deleted automatically when balance is
unloaded
•Switch-over key €/kg or €/100 g

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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 mate-
rial 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 weighings. In the event that small quantities are re-
moved or added to the material to be weighed, incorrect weighing results can be dis-
played 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 dam-
age 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 weigh-
ing 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 dammage or dammage 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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4.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the bal-
ance and, if applicable, the testing weight, must be checked regularly. The responsi-
ble user must define a suitable interval as well as type and scope of this test. Infor-
mation 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 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the appli-
ance itself when unpacking for possible visible damage.
6.2 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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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;
•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
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
7.2.1 Setup
Level balance with foot screws until the air bubble of the water balance is in the pre-
scribed circle.

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7.2.2 Scope of delivery
Serial accessories:
•Balance
•Weighing plate
•Power cable
•Protective cover
•Battery
•Operating Manual
7.3 Mains connection
Power supply is carried out by means of the supplied power cable (220 V, 50-60 Hz).
7.4 Battery power supply
The battery is charged via the internal power supply.
Before the first use, the battery should be charged by connecting it to the mains
power supply for at least 15 hours. The operating time of the battery is about. 70h.
Charging time until complete recharging ca. 12h.
AUTO-OFF function after 15 min to protect the battery.
If an arrow shows in the weight display []above the battery symbol
the capacity of the battery will soon be exhausted. The balance will be ready to oper-
ate for about another 10 hrs., then it will switch off automatically. Connect the power
adaptor as soon as possible to change the battery.
The LED display below the parts counting window informs you about the charge
status of the battery.
red: Battery is almost discharged
green: Battery is completely discharged
yellow: Battery should be charged over a longer period (over night)
7.5 Initial Commissioning
A warming up time of 5 minutes after switching on stabilizes the measuring values.
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.

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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 for the first commissioning, after each
change of location as well as in case of fluctuating environment temperature. To re-
ceive accurate measuring values it is also recommended to adjust the balance peri-
odically in weighing operation.
Procedure when adjusting:
For verified balances adjustment by means of a jumper is locked. In order to carry
out adjustment the two contacts of the conductor plate must be shorted with a jumper
(see chapt. 7.7.1).
Observe stable environmental conditions. A warming up time of ca. 10 minutes is
required for stabilization. Ensure that there are no objects on the weighing plate.
Operation Display
Switch on balance and during self-check
press the TARE key
PN
Use the number keys to enter password
„0000“:
confirmar
PN----
Ø
CAL F1
Ensure that there are no objects on the
weighing plate.
VnLQAD

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Zero point will be saved.
The required adjustment weight is
displayed:
LQAD 6 HLOS
Carefully place adjusting weight in the centre
of the weighing plate
The adjustment process is started.
The adjustment process has been success-
fully completed.
Remove adjustment weight, in case of an
adjustment error or incorrect adjustment
weight an error message is shown (SPAN /
FAKLD) on the display, repeat adjustment
process.
----
Ø
SPAnPASS
Ø
CAL F1
Return to weighing mode:
0.0
Back to adjustment process:
VnLQAD
Notice: For verified balances reset jumper.

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7.7 Verification
General introduction:
According to EU directive 90/384/EEC balances must be officially verified if they are
used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory
c) For official purposes.
d) For manufacturing final packages.
In cases of doubt, please contact your local trade in standard.
After verification the balance is sealed at the indicated positions.
Verification of the balance is invalid without the "seal/lead seal".
Verification instructions
An EU type approval exists for balances described in their technical data as verify-
able. If a balance is used where obligation to verify exists as described above, it must
officially verified and re-verified in regular intervals.
Re-verification of a balance is carried out according to the respective national regula-
tions. The validity for verification of balances in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
Balances with obligation to verify must be taken out of operation if:
•The weighing result of the balance is outside the error limit. Therefore, in
regular intervals load balance with known test weight (ca. 1/3 of the max. load)
and compare with displayed value.
•The reverification deadline has been exceeded.

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7.7.1 Jumper and seals
1. Bottom of the balance
Access to conductor plate:
•Place your balance upside down
•Remove seal
•For verified balances, the jumper is on a pin
•For adjustment the jumper must be set on both pins
Position jumper for adjustment
2. Top of the balance
•Remove weighing plate
Position
of seal
Sealing by seal or by lead
seal

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8 Operation
8.1 Switch on/off and set zero
Operation Display
1. Switch on balance
Press ON/OFF switch and hold briefly (at
the bottom right side of the balance)
The balance will carry out a self-test
As soon as the weight display shows "0"
in all the three display windows your bal-
ance is ready to weigh.
2. Zeroing
z000

NET
a

The zero display and the arrow above
the „→0←“ symbol are displayed.
8.2 Simple weighing
Operation Display
Place goods onto weighing plate
Read weighing result
z500

NET
a

If weighing values are stable the arrow
will be displayed above the symbol.
If the goods are heavier than the weigh-
ing range, the display will show "QL"
(=Overload), and a whistle is sounded.