KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating and Installation Instructions
Display Unit
KERN KXE-TM
Version 1.0
06/2011
GB
KXE-TM-BA_IA-e-1011
GB
KERN KXE-TM
Version 1.0 06/2011
Operating and installation instructions
Display device
Contents
1 Technical data ................................................................................................... 4
2 Appliance overview........................................................................................... 6
2.1 Keyboard overview.......................................................................................................7
2.1.1 Numerical input via the navigation buttons........................................................................ 8
2.2 Function keys ...............................................................................................................8
2.3 Overview of display ......................................................................................................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.....................................................................................11
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 and placing................................................................................... 12
6.1 Installation Site, Location of Use................................................................................12
6.2 Unpacking and placing...............................................................................................12
6.3 Scope of delivery / serial accessories: .......................................................................12
6.4 Transport Securing.....................................................................................................13
6.5 Mains connection........................................................................................................13
6.6 Battery operation........................................................................................................13
6.7 Adjustment..................................................................................................................14
6.8 Verification..................................................................................................................14
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7 Basic Operation............................................................................................... 16
7.1 Start-up.......................................................................................................................16
7.2 Switching Off ..............................................................................................................16
7.3 Zeroing .......................................................................................................................16
7.4 Simple weighing .........................................................................................................16
7.5 Switch-over weighing unit...........................................................................................17
7.6 Weighing with taring...................................................................................................17
7.6.1 Determination of the tare weight by weighing ................................................................. 17
7.6.2 Pre-tare deduction (PRE-TARE) ..................................................................................... 18
8 Totalization ...................................................................................................... 19
9 Function menu................................................................................................. 22
9.1 Overview.....................................................................................................................24
10 Description of individual functions............................................................ 27
10.1 Resetting the menu ....................................................................................................27
10.2 Display higher resolution............................................................................................28
10.3 Peak value function....................................................................................................29
11 Service, maintenance, disposal.................................................................. 30
11.1 Clean..........................................................................................................................30
11.2 Service, maintenance.................................................................................................30
11.3 Disposal......................................................................................................................30
11.4 Error messages..........................................................................................................31
12 Instant help................................................................................................... 32
13 Installation display unit / platform.............................................................. 33
13.1 Weighing system design.............................................................................................33
13.2 How to connect the platform.......................................................................................34
14 Technician menu.......................................................................................... 35
14.1 Configure / Menu item .......................................................................... 36
14.2 Adjust / Menu item ..................................................................................39
14.3 Enter password / Menu item ...................................................................41
14.3.1 Deposit password........................................................................................................ 41
14.3.2 Password input for access to menu............................................................................ 42
14.4 Change appliance settings / menu item .................................................. 43
KXE-TM-BA_IA-e-1110 3
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1 Technical data
KERN KXE-TM
Display 6-digit
Single (Max.) 10.000 e
Solution verifiable
Dual (Max.) 5.000 e
Verification class III
Weighing ranges max 2
Weighing Units kg, t
Divisions 1,2,5,…10, n
Display LCD 25 mm digits with back lighting
DMS weighing cells
Min. 87 Ω.
Max. 1000 Ω
Input voltage 230 V, 50 / 60 Hz
Electric Supply
Mains adapter secondary voltage 9V, 1000 mA
5 x 1.5 V, AA
Batteries
Service life 24 h
Admissible
ambient temperature
0°C – 40°C
Humidity of air < 85 % relative (not condensing)
Net weight 1 kg
KXE-TM-BA_IA-e-1110 5
Dimensions:
1. With wall support
2. Without wall support
2 Appliance overview
1
7
2
8
3 4 5 6
1. Weight display
2. Battery compartment
3. RS-232 (disabled)
4. Connection power supply (mains adapter)
5. Adjustment switch
6. Connection platform
7. Fastening screws
8. Wall bracket
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2.1 Keyboard overview
Key Function
• Turn on/off
• Quit
• Back to menu / weighing mode
• Zeroing
• Taring
• Change between gross Ù and net weight
• Functional button (allocation see chap. 9.1 FNC-02)
• Functional button (allocation see chap. 9.1 FNC-03)
• Confirm/store input
KXE-TM-BA_IA-e-1110 7
2.1.1 Numerical input via the navigation buttons
Key Function
1. Scroll forward in menu
• Increase flashing digit
• Scroll backwards in menu
• Decrease flashing digit
Digit selection to the left
Digit selection to the right
Save setting
Reject setting
2.2 Function keys
The following functions can be allocated to the buttons , or + in
menu (see chap. 9):
FNC-02 ∼ FNC04
0 Printing
1 Switch-over weighing unit
2 M+ (adding up / printing)
3 MC (delete sum memory)
4 Display change
5 HR (conversion into higher resolution)
6 PRE-TARE
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2.3 Overview of display
Indicator [T] next to symbol displays:
TARE
that a tare value is stored
Instable weighing value
M+
Data in summation memory
GROSS
that the displayed weighing value is a gross weight value
PRE-TARE
that the displayed weight value is a PRE-TARE value
Resolution 1. weighing range
Resolution 2. weighing range
KXE-TM-BA_IA-e-1110 9
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3 Basic Information (General)
3.1 Proper use
The display unit acquired by you is used in combination with a platform and serves to
determine the weighing value of material to be weighed. It is intended to be used as a
“non-automatic weighing system”, 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 display unit 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 display unit. (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 weighing
plate, minus a possibly existing tare load, must be strictly avoided. Both, the weighing
plate and the display unit may be damaged during this process.
Never operate display unit in explosive environment. The serial version is not
explosion protected.
Changes to the display unit's design are not permitted. This may lead to incorrect
weighing results, safety-related faults and destruction of the display unit.
The display unit may only be operated in accordance with the described default
settings. 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 display
unit 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 display units’ test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and display units 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 / return transport
Ö Keep all parts of the original packaging for a possibly required
return.
Ö Only use original packaging for returning.
Ö Prior to dispatch disconnect all cables and remove
loose/mobile parts.
Ö Reattach possibly supplied transport securing devices.
Ö Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.
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6 Unpacking and placing
6.1 Installation Site, Location of Use
The display units are designed in a way that reliable weighing results are achieved in
common conditions of use.
Precise and fast work is achieved by selecting the right place for your display unit
and your weighing plate.
On the installation site observe the following:
• Place the display unit and the weighing plate on a stable, even surface.
• Avoid extreme heat as well as temperature fluctuation caused by installing
next to a radiator or in the direct sunlight;
• Protect the display unit and the weighing plate against direct draft from open
windows or doors.
• Avoid jarring during weighing;
• Protect the display unit and the weighing plate against high humidity, vapours
and dust.
• Do not expose the display unit 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.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or remove
source of interference.
6.2 Unpacking and placing
Take the display unit carefully out of its packaging, remove the plastic jacket and
install it at the designated work space. Mount the display unit in a way that facilitates
operation and where it is easy to see.
6.3 Scope of delivery / serial accessories:
• For display unit, see chapter 2
• Mains adapter
• Plug for connecting platform
• Operating instructions
6.4 Transport Securing
Please note, if the display unit is used together with platform with transportation lock,
this transportation lock must be released prior to use.
See operating instructions attached to the respective platform.
Transport Securing
Example of application
6.5 Mains connection
Power is supplied via the external mains adapter. The stated voltage value must be
the same as the local voltage.
Only use original KERN mains adapters. Using other makes requires consent by
KERN.
6.6 Battery operation
Ö On the rear side of the display unit remove the battery cover and insert
5 x 1.5 V, AA batteries.
Ensure correct polarisation.
Ö Close again the lid.
In order to ensure a long lifetime of the batteries, we recommend to enable the
automatic switch-off function „FNC-08“, see chapter 9.1
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6.7 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each display unit with connected weighing plate 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 weighing system 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 receive accurate measuring values it is also
recommended to adjust the display unit periodically in weighing operation.
+ Carry out adjustment, see chapter 14.2
6.8 Verification
General introduction:
According to EU directive 90/384/EEC or 2009/23EG 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.
Verification notes:
An EU type approval exists for the appliance described in its technical data as
verifiable. If the appliance is used where obligation to verify exists as described
above, it must be verified and re-verified at regular intervals.
Re-verification of an appliance is carried out according to the respective national
regulations. Normally the validity for verification in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
Verification of the device is invalid without the seals.
The seal marks attached on verified appliances point out that the appliance
may only be opened and serviced by trained and authorised specialist staff. If
the seal mark is destroyed, verification looses its validity. Please observe all
national laws and legal regulations. In Germany a re-verification will be
necessary.
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