KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Bench scales
KERN GAB-N
Version 1.5
10/2013
GB
GAB-N-BA-e-1315
GB
KERN GAB-N
Version 1.5 10/2013
Operating Instructions Bench Scales
Table of Contents
1 Technical Data ................................................................................................ 4
2 Basic Information (General) ........................................................................... 6
2.1 Proper use ................................................................................................................................... 6
2.2 Improper Use ............................................................................................................................... 6
2.3 Warranty ...................................................................................................................................... 7
2.4 Monitoring of Test Resources ...................................................................................................... 7
3 Basic Safety Precautions ............................................................................... 7
3.1 Pay attention to the instructions in the Operation Manual ........................................................... 7
3.2 Personnel training ........................................................................................................................ 7
4 Transportation & Storage ............................................................................... 8
4.1 Testing upon acceptance ............................................................................................................ 8
4.2 Packaging / return transport ........................................................................................................ 8
5 Unpacking, Setup and Commissioning ........................................................ 8
5.1 Installation Site, Location of Use ................................................................................................. 8
5.2 Unpacking/installation ................................................................................................................ 10
5.2.1 Scope of delivery / serial accessories ................................................................................... 11
5.3 Mains connection ....................................................................................................................... 11
5.4 Rechargeable battery operation (option) ................................................................................... 12
5.5 Connection of peripheral devices .............................................................................................. 12
5.6 Initial Commissioning ................................................................................................................. 12
6 Appliance overview ...................................................................................... 13
7 Overview of displays .................................................................................... 14
8 Keyboard overview ....................................................................................... 15
9 Adjustment ................................................................ ................................ .... 16
9.1 Verified models .......................................................................................................................... 17
9.2 Non-verifiable models: ............................................................................................................... 18
9.3 Verification ................................................................................................................................. 19
9.4 Linearization (non-verified models only) .................................................................................... 21
10 Operation ....................................................................................................... 23
10.1 Weighing .................................................................................................................................... 23
10.2 Weighing with tare ..................................................................................................................... 23
10.3 Percent weighing ....................................................................................................................... 24
10.4 Parts counting ............................................................................................................................ 25
10.5 Weighing with tolerance range .................................................................................................. 26
10.5.1 Traffic light function ............................................................................................................... 26
10.6 Manual totalizing ........................................................................................................................ 28
10.7 Automatic adding-up .................................................................................................................. 30
2 GAB-N-BA-e-1315
11 The menu ....................................................................................................... 32
11.1 Navigation in the menu: ............................................................................................................. 32
11.1.1 Non verifiable models ............................................................................................................ 32
11.1.2 Verifiable models ................................................................................................................... 32
11.2 Overview: ................................................................................................................................... 33
11.2.1 Non verifiable models ............................................................................................................ 33
11.2.2 Verifiable models ................................................................................................................... 35
12 Data output .................................................................................................... 36
12.1 RS232 interface ......................................................................................................................... 36
12.1.1 Technical data ....................................................................................................................... 36
12.1.2 Pin allocation of balance output bushing: .............................................................................. 36
12.1.3 Explanation of the data transfer ............................................................................................. 37
12.2 Remote control instructions ....................................................................................................... 37
13 Service, maintenance, disposal ................................................................... 38
13.1 Cleaning ..................................................................................................................................... 38
13.2 Service, maintenance ................................................................................................................ 38
13.3 Disposal ..................................................................................................................................... 38
13.4 Error messages ......................................................................................................................... 39
14 Instant help .................................................................................................... 40
15 Declaration of -Conformity ........................................................................... 41
GAB-N-BA-e-1315 3
1 Technical Data
KERN
GAB 6K1DNM
GAB 15K2DNM
GAB 30K5DNM
Readability (d)
1 g /2 g
2 g /5 g
5 g /10 g
Weighing range (max)
3 kg /6 kg
6 kg /15 kg
15 kg /30 kg
Reproducibility
1 g /2 g
2 g /5 g
5 g /10 g
Linearity
± 1 g / 2 g
± 4 g / 10 g
± 5 g / 10 g
Stabilization time
2 s
2 s
2 s
Verification value (e)
1 g /2 g
2 g /5 g
5 g /10 g
Verification class
III
III
III
Minimum weight (min)
20 g
40 g
100 g
Weighing Units
kg
kg
kg
Recommended adjusting
weight (not supplied)
6 kg (M1)
15 kg (F2)
30 kg (M1)
Warm-up time
10 min.
10 min.
10 min.
Minimum unit weight at
piece count
0.2 g
0.5 g
1 g
Admissible ambient
conditions
-10° C to +40° C
Humidity of air
max. 80 % relative (not condensing)
Weighing surface (mm)
294 x 225
Dimensions of the housing
(B x D x H) (mm)
320 x 330 x 125
Electric Supply
Supply voltage: 220V-240V AC 50 Hz
Rechargeable battery,
not included
Working life approx. 40 h (with background light)
Working life approx. 90 h (without background light)
Loading time approx. 12 hrs.
Net weight (kg)
4.4 kg
interface
RS 232C
4 GAB-N-BA-e-1315
Mains adapter: 12 V, 500 mA
KERN
GAB 6K0.05N
GAB 12K0.1N
GAB 30K0.2N
Readability (d)
0.05 g
0.1 g
0.2 g
Weighing range (max)
6 kg
12 kg
30 kg
Reproducibility
0.05 g
0.1 g
0.2 g
Linearity
± 0.15 g
± 0.3 g
± 0.6 g
Stabilization time
2 s
2 s
2 s
Weighing Units
kg, g
kg, g
kg, g
Recommended adjusting
weight (not supplied)
6 kg (F2)
12 kg (F2)
20 kg (F1)
10 kg (F1)
Warm-up time
2 h
2 h
2 h
Minimum unit weight at
piece count
0.05 g
0.1 g
0.2 g
Admissible ambient
conditions
0° C to 40° C
Humidity of air
max. 80 % relative (not condensing)
Weighing surface (mm)
294 x 225
Dimensions of the housing
(B x D x H) (mm)
320 x 330 x 125
Electric Supply
Supply voltage: 220V-240V AC 50 Hz
Rechargeable battery,
not included
Working life approx. 40 h (with background light)
Working life approx. 90 h (without background light)
Loading time approx. 12 hrs.
Net weight (kg)
3.06 kg
interface
RS 232C
GAB-N-BA-e-1315 5
Mains adapter: 12 V, 500 mA
Dimensions:
2 Basic Information (General)
2.1 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.
2.2 Improper Use
Do not use balance for dynamic weighing. 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 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
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.
6 GAB-N-BA-e-1315
3 Basic Safety Precautions
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN
balances.
Versions in other languages are non-binding translations.
The only binding version is the original document in German.
2.3 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
2.4 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.
3.1 Pay attention to the instructions in the Operation Manual
3.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
GAB-N-BA-e-1315 7
4 Transportation & Storage
Keep all parts of the original packaging for a possibly required
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile
parts.
Reattach transport securing devices. (see chapter 5.2)
Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.
5 Unpacking, Setup and Commissioning
4.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
4.2 Packaging / return transport
5.1 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.
8 GAB-N-BA-e-1315
Therefore, observe the following for the installation site:
Place scales 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 balance against direct draughts due to open windows and doors;
Avoid jarring during weighing;
Protect the balance against high humidity, vapors 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.
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.
GAB-N-BA-e-1315 9
Ensure that transport guard has been removed
(only existing in 6 kg models)
1
5.2 Unpacking/installation
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
To loosen the transport guard screw out transport screw [1] anticlockwise.
For transportation screw down the transport screw till to the stop in clockwise
direction.
10 GAB-N-BA-e-1315
Level balance with foot screws until the air bubble of the
water balance is in the prescribed circle.
Levelling
5.2.1 Scope of delivery / serial accessories
Balance
Mains power supply
Operating instructions
5.3 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.
GAB-N-BA-e-1315 11
5.4 Rechargeable battery operation (option)
The internal battery is charged with the supplied mains cable.
Before the first use, the rechargeable battery should be charged by connecting it to
the mains power cable for at least 15 hours. The operating time of the battery is
about. 70h. Charging time until complete recharging ca. 12h.
To save battery life, the background light can be switched off in the menu
(See chap.. 11 menu).
An arrow appearing on the weight display below the battery icon indicates
that the capacity of the rechargeable battery is low. The balance will be ready to
operate for about another 10 hrs., then it will switch off automatically. Connect the
power cable as soon as possible to load the rechargeable battery.
5.5 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, always disconnect the balance from the power supply.
With your balance, only use accessories and peripheral devices by KERN, as they
are ideally tuned to your balance.
5.6 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
12 GAB-N-BA-e-1315
6 Appliance overview
1
2
3
4
5
6
1. Weighing plate / rechargeable battery compartment (under
weighing plate)
2. Bubble level
3. RS 232 interface
4. Footscrews
5. ON/OFF switch
6. Mains adapter connection
GAB-N-BA-e-1315 13
7 Overview of displays
ZERO
NET
GROSS
LO
OK
HI
21
6
54 3
Display
Designation
Description
1
The battery capacity
display
Appears when the capacity of the battery is
getting low
2
Stability display
Scales are in a steady state
3
ZERO
Zeroing display
Should the balance not display exactly zero
despite empty scale pan, press the
0
button. The balance will be set to zero after a
short standby time.
4
NET
Net weight display
Displays the net weight
5
GROSS
Gross weight display
Showing gross weight
6
LO
OK
HI
Tolerance check
Checkweighing
Load above (HI), below (LO) or within (OK)
tolerance range
Power supply connected
Icon is glowing for power supply via power
pack
14 GAB-N-BA-e-1315
8 Keyboard overview
Button
Designation
Function
UNIT
UNIT-key
Weighing units switch-over
PRINT
ESC
PRINT button
PRINT
Data transfer via interface
Save value to memory if memory function
“automatic“, is disabled
ESC
Return to weighing mode
F
C
Function key
F
Changes between weighing mode and
quantity counting mode
C
Delete displayed value
%
Percentage key
%
Weight value displayed in %
Move to the left by one decimal point
TOL
Tolerance key
Check-weighing
TOL
Enter upper, lower or both limits
Move to the right by one decimal point
TARE
Tare key
TARE
Tare balance
Increase displayed value
0
Zeroing key
0
Reset scales to zero
Confirm entered value or select function
GAB-N-BA-e-1315 15
9 Adjustment
For verified balances the adjustment is locked. In order to access the
menu you will have to short-circuit the two contacts of the circuit board
with a jumper (See chap. 9.3).
Attention:
After destruction of the seal the balance must be re-verified by an
authorised agency and a new verification wire/seal mark fitted before it
can be reused for applications subject to verification.
Observe the verification notes (see chapter 9.3).
The weight to be used depends on the capacity of the balance. Carry
out adjustment as near as possible to the balance’s maximum weight.
Info about test weights can be found on the Internet at: http://www.kernsohn.com
Observe stable environmental conditions.
Stabilisation requires a certain warm-up time.
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
receive accurate measuring values it is also recommended to adjust the balance
periodically in weighing operation.
16 GAB-N-BA-e-1315
9.1 Verified models
Switch on device via ON-OFF and press the adjustment
switch at the same time.
After that, during the balance’s selftest, press
TARE
and
%
at the same time. „UnLoAd“ appears.
Acknowledge by . Ensure that there are no objects on
the weighing plate.
The currently set adjustment weight will be displayed.
To change by using the navigation buttons (see operating
instructions chap. 8) select the desired setting, the active
digit is flashing.
Acknowledge by . „LoAd“ is displayed.
Carefully place adjusting weight in the centre of the
weighing plate. Wait for stability display, then press .
„PASS“ appears
After the adjustment the balance will carry out a self-test.
Remove adjusting weight during selftest, the appliance will
return into weighing mode automatically.
An adjusting error or incorrect adjusting weight will be
indicated by the error message; repeat adjustment
procedure.
GROSS
ZERO
GAB-N-BA-e-1315 17
9.2 Non-verifiable models:
Switch on balance Whilst balance is carrying out self-test
(counts down from 99… to 00…)
TARE
and
%
press at the
same time.
“UnLoad“ will be displayed, followed by flashing numeric
value.
(Example)
Change by pressing the navigation keys (See manual chap.
8); select desired setting; currently enabled digit will be
flashing.
(Example)
Confirm value by
0
, “Load“ will be displayed.
Place adjustment weight, stability display appears
After the adjustment the balance will carry out a self-test.
Remove adjusting weight during self test,
balance will return into weighing mode automatically.
In case of an adjustment error or incorrect adjusting weight
the display will show an error message, repeat adjustment
process.
GROSS
ZERO
18 GAB-N-BA-e-1315
9.3 Verification
Verification of the weighing system is invalid without the "seal".
General introduction:
According to EU directive 90/384/EEC balances must be 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 Qualification Approval is in existence for verified weighing systems. If a
balance is used where obligation to verify exists as described above, it must verified
and re-verified in regular intervals.
Reverification is carried out according to relevant national statutory regulations. 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!
GAB-N-BA-e-1315 19
Notes on verified balances
A
B
C
1
2
3
4
1
Possible seals: B urgent, and A or C
1. Seal of approval
2. Cover
3. Verification switch
4. Verification wire
20 GAB-N-BA-e-1315
Carrying out linearization is restricted to specialist staff possessing
well acquainted with the workings of weighing scales.
The test weights to be used must be adapted to the weighing scale’s
specifications; see chapter 2.4 “Testing instruments control”.
Observe stable environmental conditions. Stabilisation requires a
certain warm-up time.
After successful linearization you will have to carry out calibration;
see chapter 2.4 “Testing instruments control”
Adjustment
weight
GAB 6K0.05N
GAB 12K0.1N
GAB 30K0.2N
1.
0 kg
0 kg
0 kg
2.
2 kg
4 kg
10 kg
3.
4 kg
8 kg
20 kg
4.
6 kg
12 kg
30 kg
9.4 Linearization (non-verified models only)
Linearity shows the greatest deviation of a weight display on the scale to the value of
the respective test weight according to plus and minus over the entire weighing
range.
If linearity deviation is discovered during a testing instrument control, you can
improve this by means of linearization.
Tab. 1: Adjustment points
GAB-N-BA-e-1315 21
Operation
Display
How to carry out linearization:
Switch on the balance and during the
selftest press the and the
button at the same time.
„LoAd 0“ followed by LoAd 1“ will be
displayed.
Place the second adjustment weight.
After the apparition of the stability
display, „LoAd 2“ will be displayed
Put on the third adjustment weight
After the apparition of the stability display,
„LoAd 3“ will be displayed
Put on the forth adjustment weight
(max load)
After the apparition of the stability display,
„LoAd 2“ will be displayed
Third adjustment weight
After the apparition of the stability display,
„LoAd 1“ will be displayed
Second adjustment weight
After the apparition of the stability display,
„LoAd 0“ will be displayed
First adjustment weight (weighing plate
empty)
After successful linearization the balance
automatically returns to weighing mode.
In case of an adjustment error or incorrect adjusting weight the display will show an
error message; repeat linearization process.
22 GAB-N-BA-e-1315
10 Operation
10.1 Weighing
GROSS
ZERO
Turn on the scales by pressing the ON/OFF button
underneath the scales on the right.
The balance will carry out a self-test. The balance is ready for
weighing when the weight display „0.0“ appears.
When required, the scales can be reset to zero at any time
using
0
.
GROSS
(Example)
NET
Deposit weighing receptacles
After successful stop check press the
TARE
button.
The zero display and the symbol NET will appear.
The weight of the container is now internally saved.
When the weighing container is removed, its weight will be
shown as a negative value.
The taring process can be repeated any number of times,
e.g. when adding several components for a mixture (adding).
The limit is reached when the whole weighing range is
exhausted.
GROSS
ZERO
To delete the tare value, remove load from weighing plate
and press
TARE
.
Printout example:
N 0.500 kg
10.2 Weighing with tare
GAB-N-BA-e-1315 23
GROSS
ZERO
Unload scales and set to zero
GROSS
(Example)
GROSS
Put a reference weight on the weighing plate, which
corresponds to 100%
Press
%
100.00 % will appear on the display
ZERO
GROSS
Remove the reference weight
The display will return to 0.00 %
GROSS
Place a sample
The display will show the percentage value of the sample in
relation to the reference value.
To return to gram / kilo mode, press
F
C
Printout example:
Net weight:
N 0.500 kg
10.3 Percent weighing
Percent weighing allows to display weight in percent, in relation to a reference
weight.
Printout example:
Percent:
G. 199.99%
24 GAB-N-BA-e-1315
The higher the reference quantity the higher the counting exactness.
(example)
Place the reference quantity
Press
F
C
, the scales will change to quantity counting mode
Reference quantity of 10, P 10 will appear.
Reference quantities of 10, 20, 50, 100 and 200 can be set
by pressing
TARE
.
(example)
GROSS
GROSS
pcs
Confirm by pressing
0
You will briefly see a line on the screen before the scales
show the respective quantity
To change between reference weight, total weight and
quantity, press the key.
To return to weighing mode, press the
F
C
key.
10.4 Parts counting
Before the balance can count parts, it must know the average part weight (i.e.
reference). Proceed by putting on a certain number of the parts to be counted. The
balance determines the total weight and divides it by the number of parts (the socalled reference quantity). Counting is then carried out on the basis of the calculated
average piece weight.
GAB-N-BA-e-1315 25
0
No audio sound during tolerance weighing
1
An acoustic signal sounds when load is within tolerance limits
2
An acoustic signal sounds when load is beyond tolerance limits
1. Goods to be weighed above tolerance limit
2. Goods to be weighed within tolerance range
3. Goods to be weighed below tolerance limit
red lamp
Goods to be weighed above tolerance limit
yellow lamp
Goods to be weighed below tolerance limit
green lamp
Goods to be weighed within tolerance range
Printout example:
Parts counting:
G. 0.500 kg Reference weight
50 g/pcs Average parts weight
10 pcs Number of parts
10.5 Weighing with tolerance range
You can set an upper or lower limit when weighing with tolerance range and thus
ensure that the weighed load remains exactly within the set limits.
Exceeding or dropping below the tolerance range is indicated by an audio sound or
optical signal.
Audio signal:
The audio sound depends on the setting in menu block “BEEP“ (See chap. 11
menu).
Options:
Optical signal:
The arrow symbols indicate whether load is within the two set limits.
The icons provide the following information:
10.5.1 Traffic light function
When using a traffic light, the following can be displayed:
26 GAB-N-BA-e-1315
GROSS
ZERO
Unload scales and set to zero
ZERO
GROSS
HI
Press
TOL
The left digit will be flashing and icon HI will be displayed
ZERO
GROSS
HI
(Example)
Enter upper limit by pressing
TOL
and
TARE
.
ZERO
GROSS
LO
(Example)
GROSS
ZERO
Confirm upper limit by pressing
0
.
The weighing scales will change to the prompt for entering
the lower limit.
Enter lower limit by pressing
TOL
and
TARE
.
Confirm lower limit by pressing
0
.
The scales will change to zero display.
To reset the enter value to zero, press
F
C
.
The tolerance control is not active when the weight is under
20d.
To finish tolerance weighing, set both limit to zero by pressing
F
C
.
Settings:
Weighing with tolerance range
Tare when using a weighing container
Put on goods to be weighed, tolerance control is started
GAB-N-BA-e-1315 27
PRINT
ESC
(Example)
(Example)
Place load A
Wait until stability display appears
Press
PRINT
ESC
ACC 1 followed by the weighing value will appear and the
weighing value will be saved to the summation memory and
possibly printed.
Remove load A
Further loads can only be added after the display has
returned to zero.
(Example)
(Example)
GROSS
ZERO
Place load B
Wait until stability display appears
Press
PRINT
ESC
again
ACC 2, followed by the total weight will be displayed and the
weighing value added to the summation memory and
possibly printed.
Remove load B
Further loads can only be added after the display has
returned to zero.
Add more weighed goods as described before.
Please note that the balance must be unloaded between the
individual weighing procedures.
You can repeat this process until the capacity of the scales is
exhausted.
10.6 Manual totalizing
This function is used to add the individual weighing values to the summation memory
and, if a printer is connected to provide a printout when the stability display appear
and the
key pressed.
(For details how to set this function see chap. 11 menu “ACC on”)
28 GAB-N-BA-e-1315
Display of the saved weighing data:
With the weighing platform unloaded, press
PRINT
ESC
and the number of weighing
processes, followed by the total weight will be displayed for 2 sec and afterwards
printed.
PRINT
ESC
F
C
Delete weighing data:
With the weighing platform unloaded, press
The data in the summation memory are deleted.
Printout example:
1st weighing:
No. 1
G 0.200 kg
C 0.200 kg
2. Weighing
No. 2
G 0.050 kg
C 0.250 kg
3. Weighing
No. 3
G 2.000 kg
C 2.250 kg
***************************
Number of weighings / total :
No. 3
C 2.250 kg
***************************
followed by
.
GAB-N-BA-e-1315 29
Place load A
After stabilisation control has taken place, you will hear an
audio sound.
The weighing value will be saved to the summation memory.
(Example)
Remove load A
ACC 1, followed by the weighing value will be displayed and
possibly printed.
Afterwards the weighing scales change to zero display.
Place goods to be weighed B.
After the standstill control sounds a signal tone.
The weighing value is added into the total adding memory.
(Example)
GROSS
ZERO
Remove load B
ACC 2, followed by the total weight will be displayed and
possibly printed.
Afterwards the weighing scales change to zero display.
Add more weighed goods as described before.
Please note that the balance must be unloaded between the
individual weighing procedures.
You can repeat this process until the capacity of the scales is
exhausted.
10.7 Automatic adding-up
This function is used to automatically add individual weighing values to the
summation memory and to receive a printout from a possibly connected optional
printer.
For details on how to set this function see chap. 11 menu: „ACC on“)
30 GAB-N-BA-e-1315
PRINT
ESC
PRINT
ESC
F
C
The two following items limit the totalizing process:
1. totalize max. 99 times
2. number of digits displayed
Display of the saved weighing data:
With the weighing platform unloaded, press
and the number of weighing
processes, followed by the total weight will be displayed for 2 sec and afterwards
printed.
Delete weighing data:
With the weighing platform unloaded, press
followed by
.
The data in the summation memory are deleted.
Printout example:
1. Weighing :
No. 1
G 0.200 kg
C 0.200 kg
2. Weighing
No. 2
G 0.050 kg
C 0.250 kg
3. Weighing
No. 3
G 2.000 kg
C 2.250 kg
***************************
Number of weighings / total :
No. 3
C 2.250 kg
***************************
GAB-N-BA-e-1315 31
11 The menu
Call up menu
In weighing mode press
F
C
and
PRINT
ESC
at the same time
The first menu item InC 5 will be displayed
Select menu block
With help of
TOL
, the individual menu items can be
selected one after the other.
Change settings
Switch into the available settings using
TARE
.
Acknowledge setting /
exit the menu
Either save by pressing
0
or cancel by pressing
PRINT
ESC
.
Return to weighing
mode
Press
F
C
to exit menu.
Call up menu
Switch on balance
While the balance carries out a self test,
press
F
C
and
PRINT
ESC
at the same time.
The first menu item r dUAL is displayed
Select menu block
With help of
TOL
, the individual menu items can be
selected one after the other.
Change settings
Use the verification switch and the
TARE
button to switch
over into the available settings.
Acknowledge setting /
exit the menu
Either save by pressing
0
or cancel by pressing
PRINT
ESC
.
Return to weighing
mode
Press
F
C
to exit menu.
11.1 Navigation in the menu:
11.1.1 Non verifiable models
11.1.2 Verifiable models
32 GAB-N-BA-e-1315
Menu block
Main menu
Menu item
Submenu
Available settings / explanation
InC 5*
InC5…
not documented
InC 10…
InC 20…
InC 50.
EL Au….off*
Background light
EL on
Background lighting on
EL Au
Background light automatic off
EL off
Background lighting off
Au off*
Add-up mode
Au oFF
Manual add-up mode:
Totalizing and editing to printer/PC by pressing
Au on
Automatic add-up mode:
Automatic add-up and editing to printer/PC
P Cont
Continuous data output
b 4800*
Baud rate
Setting options for baud rate: 600/1200/2400/4800/9600
tP*
Printout
tP
Output of weighing value
LP50
KERN-Label-Printer
ACC on*
Add-up mode
ACC on
Add-up mode on
ACC off
Add-up mode off
A2 2d*
A 0,5d
not documented
A 1d
A 2d
A 4d
Ut on*
not documented
Ut off*
not documented
11.2 Overview:
11.2.1 Non verifiable models
GAB-N-BA-e-1315 33
bEEP1*
Audio signal
0
No audio sound during tolerance weighing
1
Audio sound when weight is within tolerance range
2
Audio sound when weight is beyond tolerance range
SPd 15*
Display speed
SPd 15
not documented
SPd 30
SPd 60
oF 0*
Auto off
Auto off after 0, 3, 5, 15, or 30 minutes
return*
Return to weighing mode
* default setting
34 GAB-N-BA-e-1315
Menu block
Main menu
Menu item
Submenu
Available settings / explanation
r dUAL*
r 3000
Weighing range
r 6000
r dUAL
EL Au*
Background
illumination
EL on
Background lighting on
EL Au
Background light automatic off
EL off
Background lighting off
Au on*
Data output
Au on
Automatic data output of stable weighing values
Au off
No data output
P Cont
Continuous data output of stable weighing values
b 9600*
Baud rate
Setting options for baud rate: 600/1200/2400/4800/9600
ACC on*
Add-up mode
ACC on
Add-up mode on
ACC off
Add-up mode off
Lp-50
Printout
tP
Output of weighing value
LP50
KERN-Label-Printer
Ut on*
not documented
Ut off*
not documented
bEEP 1*
Audio signal
0
No audio sound during tolerance weighing
1
Audio sound when weight is within tolerance range
2
Audio sound when weight is beyond tolerance range
SPd 15*
Display speed
SPd 7.5
not documented
SPd 15
SPd 30
SPd 60
oF 0*
Auto off
Auto off after 0, 3, 5, 15, or 30 minutes
Sta of*
Multi-Tare
Sta of
Multi-Tare off
Sta on
Multi-Tare on
return*
Return to weighing mode
11.2.2 Verifiable models
* default setting
GAB-N-BA-e-1315 35
12 Data output
5 1
9 6
Pin 2: Output
Pin 3: Input, not used
Pin 5: Signal ground
12.1 RS232 interface
The RS 232 interface allows a bi-directional data exchange from the balance to
external devices. This data exchange is asynchronous using ASCII - Code.
12.1.1 Technical data
ASCII code
8 data bits
Baud rate selectable at 600, 1200, 2400, 4800, 9600 bps
Miniature plug-in necessary (9 pole D-Sub)
No parity
For operation with interface faultless operation is only ensured with the correct
KERN – interface cable (max. 2m)
12.1.2 Pin allocation of balance output bushing:
36 GAB-N-BA-e-1315
Header1
,
Header2
,
-/space
W1
W2
W3
W4
W5
W6
W7 , unit
terminator
Header 1
2 byte, St or US, ST=weighing value stable, US=weighing value
instable
Header 2
2 byte, G or N, G=gross weight, N= net weight
space
Blank
W1-W7
Weight value with decimal position
Unit
2 byte, kg or lb
Terminator
<CR> <LF> (CR=Carriage return)
(LF= Line Feed)
T: tare
Taring
Z: zero
Zeroing
SI: stable status
Output of instable weighing values (US) or stable weighing values
(ST)
ST stable status or
not
Output of stable weighing values (Y) or instable weighing values
(N)
12.1.3 Explanation of the data transfer
Example:
12.2 Remote control instructions
The remote control commands are sent from the remote control unit to the balance
as ASCII code. After the balance having received the s/w/t commands, it will send the
following data.
Take into account that the following remote control commands must be sent without a
subsequent CR LF.
GAB-N-BA-e-1315 37
13 Service, maintenance, disposal
13.1 Cleaning
Before cleaning, disconnect the appliance from the operating voltage.
Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth
dampened with mild soap suds. Take care that the device is not penetrated by fluids
and polish it with a dry soft cloth.
Loose residue sample/powder can be removed carefully with a brush or manual
vacuum cleaner.
Spilled weighing goods must be removed immediately.
13.2 Service, maintenance
The appliance may only be opened by trained service technicians who are authorized
by KERN.
Before opening, disconnect from power supply.
13.3 Disposal
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
38 GAB-N-BA-e-1315
Error message
Description
Possible causes
Zeroing range exceeded
due to switching-on balance
or pressing
0
(normally
4% max)
Object on the weighing
plate
Overload when zeroing
Improper adjustment
Damaged weighing cell
Damaged electronics
Keyboard error
Improper operation of the
balance
Value outside the A/D
changer range
Damaged weighing cell
Damaged electronics
13.4 Error messages
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
GAB-N-BA-e-1315 39
14 Instant help
Fault
Possible cause
The displayed weight does
not glow.
The balance is not switched on.
Mains power supply interrupted (mains cable
defective).
Power supply interrupted.
Rechargeable battery inserted incorrectly or empty
The displayed weight is
permanently changing
Draught/air movement
Table/floor vibrations
Weighing plate has contact with other objects.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
The weighing result is
obviously incorrect
The display of the balance is not at zero
Adjustment is no longer correct.
Great fluctuations in temperature.
Warm-up time was ignored.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
In case of an error in the program process, briefly turn off the balance and disconnect
from power supply. The weighing process must then be restarted from the beginning.
Help:
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
40 GAB-N-BA-e-1315
15 Declaration of -Conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postfach 4052
E-Mail: info@kern-sohn.de
Tel: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
D
Konformitätserklärung
Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht,
mit den nachstehenden Normen übereinstimmt.
GB
Declaration of
conformity
We hereby declare that the product to which this declaration refers conforms
with the following standards.
CZ
Prohlášení o
shode
Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je v souladu
s níže uvedenými normami.
E
Declaración de
conformidad
Manifestamos en la presente que el producto al que se refiere esta
declaración está de acuerdo con las normas siguientes
F
Déclaration de
conformité
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la
présente déclaration, est conforme aux normes citées ci-après.
I
Dichiarazione di
conformitá
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si
riferisce è conforme alle norme di seguito citate.
NL
Conformiteitverklaring
Wij verklaren hiermede dat het product, waarop deze verklaring betrekking
heeft, met de hierna vermelde normen overeenstemt.
P
Declaração de
conformidade
Declaramos por meio da presente que o produto no qual se refere esta
declaração, corresponde às normas seguintes.
PL
Deklaracja
zgodności
Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,
jest zgodny z poniższymi normami.
RUS
Заявление о
соответствии
Мы заявляем, что продукт, к которому относится данная декларация,
соответствует перечисленным ниже нормам.
EU Directive
Standards
2004/108/EC
EN55022: 2006 A1:2007
EN61000-3-3:1995+A1:2001+A2:2005
EN55024: 1998+A1:2001+A2:2003
2006/95/EC
EN 60950-1:2006
EN 60065:2002+A1:2006
Signatur
Signature
Datum
Date
08.04.2013
Ort der Ausstellung
Place of issue
72336 Balingen
Albert Sauter
KERN & Sohn GmbH
Geschäftsführer
Managing director
KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0
Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com
Declaration of -Conformity
EG-Konformitätserklärung EC-Declaration of -Conformity
EC- Déclaration de conformité EC-Declaración de Conformidad
EC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodności EC-Заявление о соответствии
Electronic Balance: KERN GAB-N
GAB-N-BA-e-1315 41
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