KERN RPB 6K2NM User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instruction
Price computing scale
KERN RPB-N
Version 1.4
06/2009
GB
RPB-N-BA-e-0914

GB KERN RPB-N
Version 1.4 06/2009
Operating instruction
Price computing scale
Contents
1Technical data __________________________________________________ 4
2Declaration of conformity ________________________________________ 7
3Appliance overview _____________________________________________ 8
3.1 Overview of display ______________________________________________ 10
3.1.1 Display weight _______________________________________________________ 11
3.1.2 Display basic price ____________________________________________________ 11
3.1.3 Display sales price ____________________________________________________ 11
3.2 Keyboard overview_______________________________________________ 12
4Basic Information (General)______________________________________ 13
4.1 Proper use______________________________________________________ 13
4.2 Improper Use ___________________________________________________ 13
4.3 Warranty _______________________________________________________ 13
4.4 Monitoring of Test Resources ______________________________________ 14
5Basic Safety Precautions ________________________________________ 14
5.1 Pay attention to the instructions in the Operation Manual_______________ 14
5.2 Personnel training _______________________________________________ 14
6Transport and storage __________________________________________ 14
6.1 Testing upon acceptance _________________________________________ 14
6.2 Packaging ______________________________________________________ 14
7Unpacking, Setup and Commissioning ____________________________ 15
7.1 Installation Site, Location of Use ___________________________________ 15
7.2 Unpacking ______________________________________________________ 15
7.2.1 Setup ______________________________________________________________ 15
7.2.2 Scope of delivery _____________________________________________________ 16
7.3 Mains connection ________________________________________________ 16
7.4 Battery power supply _____________________________________________ 16
7.5 Initial Commissioning ____________________________________________ 16
7.6 Adjustment _____________________________________________________ 17
7.7 Verification _____________________________________________________ 19
7.7.1 Jumper and seals _____________________________________________________ 20
8Operation _____________________________________________________ 21
8.1 Switch on/off and set zero _________________________________________ 21
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8.2 Simple weighing _________________________________________________ 21
8.3 Weighing with taring _____________________________________________ 22
8.4 Weighing with price determination__________________________________ 23
8.4.1 Manual input of a basic price ____________________________________________ 23
8.4.2 Saving and calling up a basic price _______________________________________ 23
8.5 AUTO CLEAR ___________________________________________________ 25
9Display background illumination _________________________________ 26
10 AUTO OFF function___________________________________________ 27
11 Data Interface RS 232C ________________________________________ 28
11.1 Technical data___________________________________________________ 28
11.2 Pin allocation for the balance output socket (front view)________________ 28
11.3 Parameter selection ______________________________________________ 28
11.4 Setting the date/time _____________________________________________ 29
11.5 Remote control instructions _______________________________________ 29
12 Service, maintenance, disposal _________________________________ 30
12.1 Cleaning _______________________________________________________ 30
12.2 Service, maintenance_____________________________________________ 30
12.3 Disposal________________________________________________________ 30
13 Instant help _________________________________________________ 31
RPB-N-BA-e-0914 3

1 Technical data
KERN RPB 3K1NM RPB 6K2NM
Readability (d) 1g 2 g
Weighing range (max) 3 kg 6 kg
Minimum load 20 g 40 g
Verification value 1 g 2 g
Verification class III III
Reproducibility 1 g 2 g
Linearity ± 2 g ± 4 g
Stabilization time 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 3 kg (M2) 6 kg (M2)
Warm up time (operating
temperature) 10 min
Net weight (kg) 4,3
Dimensions of the housing
(B x D x H) 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 15% - 85% (not condensing)
Voltage 230 V (AC)
Battery Operating time ca. 70 hrs. / loading time ca. 12 hrs.
Data interface RS 232C
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KERN RPB 15K5NM RPB 30K10NM RPB 3K1HNM
Readability (d) 5 g 10 g 1g
Weighing range (max) 15 kg 30 kg 3 kg
Minimum load 100 g 200 g 20 g
Verification value 5 g 10 g 1 g
Verification class III III III
Reproducibility 5 g 10 g 1 g
Linearity ± 10 g ± 20 g ± 2 g
Stabilization time 2 sec. 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 15 kg (M2) 30 kg (M2) 3 kg (M2)
Net weight (kg) 4,3 4,3 4,7
Dimensions of the housing
(B x D x H) 315 x 355 x 110 315 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
Warm up time (operating
temperature) 10 min
Weighing unit €/kg; €/g
Permissible ambient condi-
tion -10° C to 40° C
Humidity of air 15% - 85% (not condensing)
Voltage 230 V
Battery Operating time ca. 70 hrs. / loading time ca. 12 hrs.
Data interface RS 232C
RPB-N-BA-e-0914 5

KERN RPB 6K2HNM RPB 15K5HNM RPB 30K10HM
Readability (d) 2 g 5 g 10 g
Weighing range (max) 6 kg 15 kg 30 kg
Minimum load 40 g 100 g 200 g
Verification value 2 g 5 g 10 g
Verification class III III III
Reproducibility 2 g 5 g 10 g
Linearity ± 4 g ± 10 g ± 20 g
Stabilization time 2 sec. 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 6 kg (M2) 15 kg (M2) 30 kg (M2)
Warm up time (operating
temperature) 10 min
Net weight (kg) 4,7
Dimensions of the housing
(B x D x H)
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 15% - 85% (not condensing)
Voltage 230 V
Battery Operating time ca. 70 hrs. / loading time ca. 12 hrs.
Data interface RS 232C
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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..NM
Mark applied EU Directive Standards
89/336/EEC EMC
73/23/EEC Low Voltage
EN 61326
EN 60950
EN 61010
Date: 10.01.2007 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
RPB-N-BA-e-0914 7

3 Appliance overview
Models without vertical display:
Mains cable connection
Air bubble
Second display on customer's side
Battery
compartment
ON/OFF switch
RS-232C
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Models with vertical display:
Mains cable connection
Air bubble
RS-232C
ON/OFF
switch
Rotatable vertical
display
Backside
RPB-N-BA-e-0914 9

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 [€].
RPB-N-BA-e-0914 11

3.2 Keyboard overview
Choice Function
•Number keys, enter basic price /PLU
•Delete key
•Saving and calling up the two 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
PRINT
•Output of the weight to an external appliance
•Parameter selection
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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
RPB-N-BA-e-0914 13

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.
Selectable AUTO-OFF function after 1, 5, or 10 min (see chapt. 10) to protect the
battery.
If an arrow shows in the weight display []above the battery symbol or “bat lo”
the capacity of the battery will soon be exhausted. The balance will be ready to oper-
ate for about another 10 min., 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
PN
Use the number keys to enter password
„0000“:
confirmar
PN----
Ø
VnLQAD
Ensure that there are no objects on the
weighing plate.
The required adjustment weight is
displayed:
LQAD 6 HLOS
RPB-N-BA-e-0914 17

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 and jumper.
The balance returns to weighing mode
----
Ø
SPAnPASS
Ø
KP Qn
f
Ø
0.0
In case of an adjustment error or incorrect adjustment weight an error message is
shown (SPAN / FAKLD) on the display, repeat adjustment process.
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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.
RPB-N-BA-e-0914 19

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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