KERN & SOHN RPB D User Manual
KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Phone +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Instruction Manual
Price computing scales
KERN RPB_D
Version 2.5
05/2014
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
RPB_D-BA-e-1425
KERN RPB_D
Price computing scales
GB
Version 2.5 05/2014
Instruction Manual
Contents
1 Technical data ................................................................................................ 4
1.1 Dimensions ................................................................................................................................. 5
2 Appliance overview ....................................................................................... 6
2.1 Overview of display ..................................................................................................................... 7
2.2 Keyboard overview ..................................................................................................................... 9
3 Basic Information (General) ........................................................................ 10
3.1 Proper use ................................................................................................................................ 10
3.2 Improper Use ............................................................................................................................ 10
3.3 Warranty ................................................................................................................................... 10
3.4 Monitoring of Test Resources ................................................................................................... 10
4 Basic Safety Precautions ............................................................................ 11
4.1 Pay attention to the instructions in the Operation Manual ........................................................ 11
4.2 Personnel training ..................................................................................................................... 11
5 Transport and storage ................................................................................. 11
5.1 Testing upon acceptance ......................................................................................................... 11
5.2 Packaging / return transport ..................................................................................................... 11
6 Unpacking, 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
7 Operation Mode ........................................................................................... 22
7.1 Turn on/off ................................................................................................................................ 22
7.2 Zeroing ...................................................................................................................................... 22
7.3 Weighing with taring ................................................................................................................. 22
7.4 Overload warning ...................................................................................................................... 22
8 Weighing 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
9 Additional useful functions ......................................................................... 28
9.1 AUTO CLEAR ........................................................................................................................... 28
9.2 Display background illumination ............................................................................................... 28
9.3 AUTO POWER OFF ................................................................................................................. 29
RPB_D-BA-e-1425 2
10 RS 232 interface ........................................................................................... 30
10.1 Technical data .......................................................................................................................... 30
10.2 Pin allocation of balance output bushing: ................................................................................. 30
10.3 Fernsteuerbefehle .................................................................................................................... 30
10.4 Printout example: ...................................................................................................................... 30
11 Service, maintenance, disposal .................................................................. 31
11.1 Cleaning .................................................................................................................................... 31
11.2 Service, maintenance ............................................................................................................... 31
11.3 Disposal .................................................................................................................................... 31
12 Instant help ................................................................................................... 32
12.1 Error messages ........................................................................................................................ 32
13 Declaration of -Conformity .......................................................................... 33
RPB_D-BA-e-1425 3
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 2 g / 5 g 5 g / 10 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)
Stabilization time 2 s
Heating time (operating
temperature)
Net weight (kg) 3.3 kg
Basic price, can be
switched over
Admissible
ambient temperature
Allowable air humidity 0 % - 80 % (non-condensing)
Electric Supply
Rechargeable battery
(Option)
5 kg; 1 kg (F2) 15 kg (M1)
10 min
€/kg; €/100 g
-10° C to 40° C
Mains adapter 220 V – 240 V AC 50 Hz
balance 12 V, 500 mA
6 V, 4 Ah
Operating time – background lighting on 40 hrs.
Operating time – background lighting off 80 hr s.
20 kg; 10 kg
(M1)
Loading time approx. 14 hrs.
RPB_D-BA-e-1425 4
Models with post-mounted display:
6 V, 4 Ah
KERN RPB 6K1 DHM 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 2 g / 5 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)
5 kg; 1 kg (F2) 10 kg; 5 kg (M1) 20 kg; 10 kg(M1)
Stabilization time 2 s
Heating time (operating
temperature)
10 min
Net weight (kg) 4.8 kg
Basic price, can be
switched over
Admissible
ambient temperature
€/kg; €/100 g
-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)
Operating time – background lighting on 40 hrs.
Operating time – background lighting off 80 hr s.
Loading time approx. 14 hrs.
1.1 Dimensions
RPB_D-BA-e-1425 5
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. RS 232 interface
5. Foot screws
6. ON/OFF switch
7. Mains adapter connection
8. Adjustment switch
RPB_D-BA-e-1425 6
Weight
2.1 Overview of display
Weight
Basic price
Sales price
Storage battery status display
Operator and secondary display (standard on the backside of mode ls without
post-mounted display):
Post-mounted display for models with tripod:
Basic price
Sales price
RPB_D-BA-e-1425 7
Display weight
Here, the weight of your goods is displayed.
Indicator next to symbol displays:
GROSS�
NET
�
a
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 [€].
Battery very low
Gross weight
Net weight
Stability display
Zeroing display
Indicator next to symbol displays:
AUTO CLE AR
BAR
Storage battery status display
red
green
Set basic price is deleted automatically when
balance is unloaded
Calculating the change (see chap. 8.2)
Charging storage battery
Battery is completely discharged
RPB_D-BA-e-1425 8
2.2 Keyboard overview
Bubble level
• Save basic price (press and hold key for a long time) see
see chap. 8.2
Selection Function
~
3 Numerical keys, PLU-keys
• Delete
chap. 8.2
• Call-up basic price (press and hold key for a short time),
• 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
RPB_D-BA-e-1425 9
deleted when the balance is unloaded, see chap. 9.1
• Zeroing
• Back to weighing mode
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.
RPB_D-BA-e-1425 10
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