KERN RPB_D User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Instruction Manual
Price computing scales
KERN RPB_D
Version 2.4
04/2013
GB
RPB_D-BA-e-1324

RPB_D-BA-e-1324
2
GB
KERN RPB_D
Version 2.4 04/2013
Instruction Manual
Price computing scales
Contents
1Technical data................................................................................................ 4
1.1 Dimensions................................................................................................................................. 5
2Appliance overview ....................................................................................... 6
2.1 Overview of display..................................................................................................................... 7
2.2 Keyboard overview ..................................................................................................................... 9
3Basic Information (General)........................................................................ 10
3.1 Proper use................................................................................................................................ 10
3.2 Improper Use............................................................................................................................ 10
3.3 Warranty................................................................................................................................... 10
3.4 Monitoring of Test Resources................................................................................................... 10
4Basic Safety Precautions............................................................................ 11
4.1 Pay attention to the instructions in the Operation Manual ........................................................ 11
4.2 Personnel training..................................................................................................................... 11
5Transport and storage................................................................................. 11
5.1 Testing upon acceptance ......................................................................................................... 11
5.2 Packaging / return transport..................................................................................................... 11
6Unpacking, Setup and Commissioning ..................................................... 12
6.1 Installation Site, Location of Use .............................................................................................. 12
6.2 Unpacking................................................................................................................................. 12
6.3 Transport screw........................................................................................................................ 13
6.3.1 Placing...................................................................................................................................... 13
6.3.2 Scope of delivery / serial accessories:...................................................................................... 14
6.4 Mains connection...................................................................................................................... 14
6.5 Battery power supply (option)................................................................................................... 14
6.6 Initial Commissioning................................................................................................................ 14
6.7 Adjustment................................................................................................................................ 15
6.8 Verification................................................................................................................................ 17
6.8.1 Adjustment controls and seals.................................................................................................. 18
6.9 Checking the balance verification settings ............................................................................... 18
6.9.1 Service mode............................................................................................................................ 19
7Operation Mode ........................................................................................... 22
7.1 Turn on/off ................................................................................................................................ 22
7.2 Zeroing...................................................................................................................................... 22
7.3 Weighing with taring................................................................................................................. 22
7.4 Overload warning...................................................................................................................... 22
8Weighing with price determination............................................................ 23
8.1 Basic price entry via keyboard.................................................................................................. 23
8.1.1 Unit switch over €/kg to €/100 g................................................................................................ 24
8.2 Memory for basic price (PLU = Price look up).......................................................................... 26
9Additional useful functions......................................................................... 28
9.1 AUTO CLEAR........................................................................................................................... 28
9.2 Display background illumination............................................................................................... 28
9.3 AUTO POWER OFF................................................................................................................. 29

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10 Service, maintenance, disposal.................................................................. 30
10.1 Cleaning.................................................................................................................................... 30
10.2 Service, maintenance............................................................................................................... 30
10.3 Disposal.................................................................................................................................... 30
11 Instant help................................................................................................... 31
11.1 Error messages........................................................................................................................ 31
12 Declaration of -Conformity.......................................................................... 32

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1 Technical data
Models without vertical display:
KERN
RPB 6K1DM
RPB 15K2DM
RPB 30K5DM
Weighing range (max)
3 kg / 6 kg
6 kg / 15 kg
15 kg / 30 kg
Readability (d)
1 g / 2 g
2 g / 5 g
5 g / 10 g
Minimum load (Min)
20 g
40 g
100 g
Verification value (e)
1 g
2 g
5 g
Verification class
III
III
III
Reproducibility
1 g / 2 g
2 g / 5 g
5 g / 10 g
Linearity
± 1 g / ±2 g
± 2 g /± 5 g
± 5 g / ±10 g
Recommended adjusting
weight (not supplied)
6 kg (F2)
15 kg (M1)
30 kg (M1)
Stabilization time
2 s
Heating time (operating
temperature)
10 min
Net weight (kg)
3.8 kg
Basic price, can be
switched over
€/kg; €/100 g
Admissible
ambient temperature
-10° C to 40° C
Allowable air humidity
0 % - 80 % (non-condensing)
Electric Supply
Mains adapter 220 V –240 V AC 50 Hz
balance 12 V, 500 mA
Rechargeable battery
(Option)
6 V, 4 Ah
Operating time –background lighting on 40 hrs.
Operating time –background lighting off 80 hrs.
Loading time approx. 12 hrs.

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Models with post-mounted display:
KERN
RPB 6K1DHM
RPB 15K2DHM
RPB 30K5DHM
Weighing range (max)
3 kg / 6 kg
6 kg / 15 kg
15 kg / 30 kg
Readability (d)
1 g / 2 g
2 g / 5 g
5 g / 10 g
Minimum load (Min)
20 g
40 g
100 g
Verification value (e)
1 g
2 g
5 g
Verification class
III
III
III
Reproducibility
1 g//2 g
2 g//5 g
5 g//10 g
Linearity
± 1 g / ±2 g
± 2 g /± 5 g
± 5 g / ±10 g
Recommended adjusting
weight (not supplied)
6 kg (F2)
15 kg (M1)
30 kg (M1)
Stabilization time
2 s
Heating time (operating
temperature)
10 min
Net weight (kg)
4.8 kg
Basic price, can be
switched over
€/kg; €/100 g
Admissible
ambient temperature
-10° C to 40° C
Allowable air humidity
0 % - 80 % (non-condensing)
Electric Supply
Mains adapter 220 V –240 V AC 50 Hz
balance 12 V, 500 mA
Rechargeable battery
(Option)
6 V, 4 Ah
Operating time –background lighting on 40 hrs.
Operating time –background lighting off 80 hrs.
Loading time approx. 12 hrs.
1.1 Dimensions

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2 Appliance overview
Models without vertical display:
Models with post-mounted display:
1. Weighing plate / rechargeable battery compartment (under weighing plate)
2. Bubble level
3. Post-mounted display
4. Not documented
5. Foot screws
6. ON/OFF switch
7. Mains adapter connection
8. Adjustment switch

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Weight
Basic price
Sales price
2.1 Overview of display
Operator and secondary display (standard on the backside of models without
post-mounted display):
Weight
Basic price
Sales price
Storage battery status display
Post-mounted display for models with tripod:

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Display weight
Here, the weight of your goods is displayed.
Indicator next to symbol displays:
Battery very low
GROSS
Gross weight
NET
Net weight
Stability display
Zeroing display
Display basic price
Basic price, can be switched over from € / kg or € / 100 g.
Indicator next to symbol displays:
€/kg
Basic price in €/kg
€/100 g
Basic price in €/100 g
Display sale price
Here the sales price is displayed in Euro [€].
Indicator next to symbol displays:
AUTO CLEAR
Set basic price is deleted automatically when
balance is unloaded
BAR
Calculating the change (see chap. 8.2)
Storage battery status display
red
Charging storage battery
green
Battery is completely discharged

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2.2 Keyboard overview
Bubble level
Selection
Function
~
3 Numerical keys, PLU-keys
Delete
Save basic price (press and hold key for a long time) see
chap. 8.2
Call-up basic price (press and hold key for a short time),
see chap. 8.2
Switch-over unit € / kg € / 100g
Issue to external device
Parameter selection
Calculating the change, see chap. 8.2
Taring, see chap. 7.3
Storing settings
Background illumination of the display, see chap. 9.2
If function is activated, the set basic price is automatically
deleted when the balance is unloaded, see chap. 9.1
Zeroing
Back to weighing mode

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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“. (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 or damage by media, liquids, natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
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.