KERN ADB-C Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Analytical balance
KERN ADB-A / ADB-C / ADJ
Version 3.4
2022-04
GB
ADB_ADJ-BA-e-2234

2 ADB_ADJ-BA-e-2234
GB
KERN ADB_ADJ
Version 3.4 2022-04
Operating instructions Analytical balance
Contents
1Technical data................................................................................................ 3
2Declaration of Conformity............................................................................. 4
3Device overview............................................................................................. 5
3.2 Keyboard overview................................................................................................................... 6
3.3 Overview of display.................................................................................................................. 7
4Basic Information (General).......................................................................... 8
4.1 Intended use ............................................................................................................................. 8
4.2 Improper Use ............................................................................................................................ 8
4.3 Warranty.................................................................................................................................... 8
4.4 Monitoring of Test Resources................................................................................................. 9
5Basic Safety Precautions.............................................................................. 9
5.1 Pay attention to the instructions in the Operation Manual.................................................. 9
5.2 Personnel training.................................................................................................................... 9
6Transport and storage................................................................................... 9
6.1 Testing upon acceptance ........................................................................................................ 9
6.2 Packaging / return transport ................................................................................................... 9
7Unpacking, Setup and Commissioning ..................................................... 11
7.1 Installation Site, Location of Use.......................................................................................... 11
7.2 Unpacking, checking and installation.................................................................................. 12
7.3 Levelling.................................................................................................................................. 12
7.4 Electric power supply ............................................................................................................ 13
7.5 Initial Commissioning ............................................................................................................ 13
7.6 Connection of peripheral devices......................................................................................... 13
8Adjustment................................................................................................... 14
8.1 ADJ Models............................................................................................................................. 14
8.2 Models ADB ............................................................................................................................ 15
9Basic Operation ........................................................................................... 17
9.1 Start-up.................................................................................................................................... 17
9.2 Switch into stand-by mode.................................................................................................... 17
10 Applications ................................................................................................. 20
11 Menu ............................................................................................................. 23
11.1 Navigation in the menu.......................................................................................................... 23
11.2 Menu overview........................................................................................................................ 25
12 RS232C-interface......................................................................................... 26
12.1 Technical data......................................................................................................................... 26
12.2 Interface cable ........................................................................................................................ 27
12.3 Interface parameters.............................................................................................................. 27
12.3.1 Baud rate.............................................................................................................................. 27
12.3.2 Output condition................................................................................................................... 28
12.4 Sample protocols (KERN YKB-01N) ..................................................................................... 28
13 Servicing, maintenance, disposal .............................................................. 29
14 Instant help................................................................................................... 30
14.1 Error messages ...................................................................................................................... 30

ADB_ADJ-BA-e-2234 3
1 Technical data
KERN
ADB 100-4
ADB 200-4
ADB 600-C3
Product no. / type
ADB 100-4A
TADB 220-4-B
ADB 600-C3
Default weighing unit g g ct
Readability (d) 0,0001 g 0,0001 g
0,001 ct
0,0001 g
Weighing range (max) 120 g 220 g
600 ct
120 g
Reproducibility 0,0002 g 0,0002 g
0,002 ct
0,0002 g
Linearity ± 0.0004 g ± 0.0004 g
± 0.004ct
± 0,0004 g
Recommended adjusting weight
not supplied (class) 100 g (E2) 200 g (E2) 100 g (E2)
Adjustment points 100 g 100 g 100 g
- 200 g -
Stabilization time 4 sec.
Warm-up time 8 h
Weighing Units g, oz, ct, lb
Smallest part weight for piece
counting 1 mg (under laboratory conditions)
10 mg (under normal conditions)
Reference quantities at
piece counting 10, 20, 50,100, 1000
Weighing plate, stainless steel ø 90 mm
Dimensions Housing
(B x D x H) mm 230 x 310 x 330 230 x 310 x 230
Net weight (kg) 4,4 3,8
Permissible ambient condition
+10° C to +30° C
Humidity of air 20 ~ 85 % relative (not condensing)
Power supply unit
Input voltage AC 100 - 240 V, 50-60 Hz 2,0 A
Balance
Input voltage DC 12 V, 2 A
Interface
RS232C

4 ADB_ADJ-BA-e-2234
KERN
ADJ 100-4 ADJ 200-4 ADJ 600-C3
Product no. / Type
TADJ 100-4-A
TADJ 220-4-B
TADJ 600-C3-A
Default weighing unit
g
g
ct
Readability (d) 0,0001 g 0,0001 g
0,001 ct
0,0001 g
Weighing range (max) 120 g 220 g
600 ct
120 g
Reproducibility 0,0002 g 0,0002 g
0,002 ct
0,0002 g
Linearity ± 0.0004 g ± 0.0004 g
± 0.004ct
± 0,0004 g
Adjusting weight internal
Stabilization time
4 sec
Warm-up time
8 h
Weighing Units
g, oz, ct, lb
Smallest part weight for piece
counting
1 mg (under laboratory conditions)
10 mg (under normal conditions)
Reference quantities at
piece counting
10, 20, 50,100, 1000
Weighing plate, stainless steel
ø 90 mm
Dimensions Housing
(B x D x H) mm
230 x 310 x 330 230 x 310 x 230
Net weight (kg)
4,9
3,8
Permissible ambient condition
+10° C to +30° C
Humidity of air
20 ~ 85 % relative (not condensing)
Power supply unit
Input voltage
AC 100 - 240 V, 50 - 60 Hz 2,0 A
Balance
Input voltage
DC 12 V, 2A
Interface
RS232C
2 Declaration of Conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce

ADB_ADJ-BA-e-2234 5
3 Device overview
3.1 Components
Pos.
Designation
1 Glass windshield
2 Interface RS 232
3 Weighing pan
4 Bubble level
5 Display
6 Keyboard
7 Foot screws
8 Handle for operation of the side windshield doors
9 Mains adapter connection

6 ADB_ADJ-BA-e-2234
3.2 Keyboard overview
Key Designation Function
ON/OFF key Turn on/off
Exit menu
CAL key Adjustment
TARE key
Taring
Zeroing
Save setting
MODE key Switch-over weighing unit
Selecting an application
MENU key
How to save the reference
Switch on/off background illumination of display
(keep the button pressed for a long time)
PRINT key Change setting in the menu
Print out the displayed value

ADB_ADJ-BA-e-2234 7
3.3 Overview of display
Display Description
Stability display
The balance is in stand-by mode
g Weighing unit [Gram]
ct Weighing unit [Carat]
lb Weighing unit [Pound]
oz
Weighing unit [Ounce]
Pcs Application parts counting
% Application percentage determination

8 ADB_ADJ-BA-e-2234
4 Basic Information (General)
4.1 Intended 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
pan. 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 add-on weighing procedures, if small amounts of
goods to be weighed are removed or added. The “stability compensation“ installed in
the balance may result in displaying an incorrect measuring value! (Example: Slowly
draining fluids from a container on the balance.)
Do not leave permanent load on the weighing pan. 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
damaged 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.
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 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

ADB_ADJ-BA-e-2234 9
4.4 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.
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
appliance itself when unpacking for possible visible damage.
6.2 Packaging / return transport
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.
Pack weighing plate + accessories and power supply unit
separately.
Secure glass windshield against slipping (e.g. using an
adhesive strip).

10 ADB_ADJ-BA-e-2234
Secure all parts against shifting and damage as depicted.
,

ADB_ADJ-BA-e-2234 11
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.
On the installation site observe the following:
•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.

12 ADB_ADJ-BA-e-2234
7.2 Unpacking, checking and installation
Open packaging and remove all parts carefully.
Verify that there has been no damage and that all packing items are present.
Scope of delivery / serial accessories
•Balance
•Mains adapter
•Operating instructions
Prior to any installation and assembly works, the balance must
be separated from the mains supply.
Install the balance at the intended workplace.
The right place is decisive for the accuracy of the weighing results of high-
resolution analytic balances (see chap. 7.1).
Remove the transportation lock (only models ADJ)
Put the following parts upon in the right order
•Carrier of weighing plate
•Weighing pan
7.3 Levelling
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
Check levelling regularly.

ADB_ADJ-BA-e-2234 13
7.4 Electric power supply
Select a country-specific mains plug.
Check, whether the voltage acceptance on the scales is set correctly.
Do not connect the
scales to the power grid unless the information on
the instrument (sticker) matches the local mains voltage.
Only use KERN original mains adapter. Using other makes requires
consent by KERN.
Important:
Prior to commissioning check the mains cable for damage.
Make sure that the mains adapter will not be in touch with liquids.
The mains plug must be accessible at any time.
Connect the mains adapter to the connecting socket on the backside of
the balance and to the power mains.
The display unit lights up.
As soon as the balance is supplied with energy,
the indicator [ ] is displayed.
The error message <P FAIL> indicates that the balance was
disconnected from power supply without pressing the ON/OFF button.
Remedy:
Press ON/OFF. The device will carry out a display test.
The balance is ready for weighing once the weight indication appears.
7.5 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.
7.6 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.

14 ADB_ADJ-BA-e-2234
8 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 receive accurate measuring values it is also recommended to adjust the balance
periodically in weighing operation.
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization. Ensure that there are no objects on the weighing pan.
8.1 Models ADJ
8.1.1 Automatic adjustment using a built-in weight
Menu setting <C1-0>, see chapter 11.2.
Automatic adjustment is performed:
•having detected a change in temperature by 2°C from the previous adjustment,
•a defined time interval has elapsed, selectable 2, 3, 4, 6, 8 hours
(C7-0 – C7-4, see chapter 11.2).
Procedure:
In case of the adjustment error (e.g. object on the plate) the following error
message will be displayed: <CAL NO>, repeat the adjustment procedure.

ADB_ADJ-BA-e-2234 15
8.1.2 Manual initiation of internal adjustment
Menu setting <C1-2>, see chapter 11.2.
Execution:
Press CAL button in the weighing mode.
The adjustment is carried out automatically.
After the successful adjustment the scales will be
automatically switched back to the weighing mode.
In case of the adjustment error (e.g. object on the plate)
the following error message will be displayed:
<CAL NO>, repeat the adjustment procedure.
8.2 Models ADB
•Carry out adjustment as near as possible to the balance’s maximum
weight (required adjustment weight see chap. 1). Info about adjustment
weights can be found on the Internet at: http://www.kern-sohn.com
•Observe stable environmental conditions. Stabilisation requires a certain
warm-up time.
•Ensure that there are no objects on the weighing pan.
•Ensure menu setting <C1-1>, see chap. 11.2
•In the ADB 200-4A model, adjustment is possible using a 100 g weight,
but this is not the best way in terms of measurement technique.
•For the ADB 600-C3 models, remember that the selected weighing unit is
[gram].

16 ADB_ADJ-BA-e-2234
Procedure:
Press CAL in the weighing mode.
The device will display the value of the required
adjustment weight (e.g. 100 g).
In the ADB 200-4A model, select <CAL 200> by
pressing TARE.


Press CAL again, you will see the indication <CAL in>.
No objects may be left on the weighing plate.
Wait until the <CAL dn>, indication, then carefully set
the adjustment weight in the centre of the weighing
plate and close the windshield door.

When the adjustment is successfully completed, you
will see the <CAL up> indication.

Remove the adjustment weight, the balance will be
switched back to the weighing mode.

ADB_ADJ-BA-e-2234 17
9 Basic Operation
9.1 Start-up
As soon as the balance is supplied with energy, the
indicator [ ] is displayed.
To switch on press the ON/OFF key.
The balance carries out a display test.
As soon as the weight display appears, the balance is
ready for weighing.
9.2 Switch into stand-by mode
Press ON/OFF key, the display disappears
The power symbol [ ] will be displayed.
In stand-by mode the balance is ready for operation immediately after
switching-on without warm-up time.
To switch off the balance completely, disconnect the cable from the mains.
The balance starts in the mode, in which it has been switched off.

18 ADB_ADJ-BA-e-2234
9.3 Zeroing
In order to obtain optimal weighing results, reset to zero the balance before weighing.
Unload the balance.
Press the TARE key.
Wait until the zero display appears.
9.4 Sample weighing

Place the goods to be weighed and close the
windshield.
Wait for stability display .
Read weighing result.
Overload warning
Overloading exceeding the stated maximum load (max) of the device, minus
a possibly existing tare load, must be strictly avoided. This could damage the
instrument.
Exceeding the maximum load is indicated by the display „E “.Unload
weighing system or reduce preload.
9.5 Unit Conversion
By repeatedly pressing of the MODE key the weighed value can be switched over to
the available weighing and application units.

ADB_ADJ-BA-e-2234 19
9.6 Weighing with tare
The dead weight of any weighing container may be tared away by pressing a button,
so that the following weighing procedures show the net weight of the goods to be
weighed.
Set balance to zero
Deposit empty weighing container. The result is
displayed.
Wait for stability display, then press the TARE key
The zero display appears.
Weigh the material, the net weight will be indicated.
•
When the balance is unloaded the saved taring value is displayed with
negative sign.
•To delete the stored tare value, remove load from weighing pan and
press the TARE key.

20 ADB_ADJ-BA-e-2234
10 Applications
10.1 Parts counting
Before the balance can count parts, it must know the average part weight (i.e. the
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 so-
called reference quantity. Counting is then carried out on the basis of the calculated
average piece weight.
1. Select the reference piece number
In weighing mode call up menu item „C2“, see chap.
11.1
Select the desired reference number of pieces using
the PRINT key, see chap. 11.2.
Confirm setting by pressing the TARE key.
Exit menu using ON/OFF key: Confirm query „SAVE“
by pressing the TARE key.
The balance returns automatically into weighing mode
2. Call application
Press the MODE key repeatedly until „Pcs“ is
displayed.
3. Set to zero/taring
Press the TARE key to set the balance to zero or to
tare when using a weighing container.