KERN ABP Set Up And Operating Manual
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 manual
Analytical balance
KERN ABP
Version 1.0
2018-08
GB
ABP-BA-e-1810
2 ABP-BA-e-1810
GB
KERN ABP
Version 1.0 2018-08
Operating manual
Analytical balance
Contents
1 Technical data ................................................................................................ 5
2 Declaration of conformity ............................................................................. 7
3 Appliance overview ....................................................................................... 8
3.1 Components .............................................................................................................................. 8
3.2 Keyboard ................................................................................................................................. 10
3.2.1 Numeric entry ........................................................................................................................... 11
3.3 Display ..................................................................................................................................... 12
4 Basic Information (General ) ........................................................................ 15
4.1 Proper use ............................................................................................................................... 15
4.2 Improper Use .......................................................................................................................... 15
4.3 Warranty .................................................................................................................................. 15
4.4 Monitoring of Test Resources ............................................................................................... 16
5 Basic Safety Precauti on s ............................................................................ 16
5.1 Pay attention to the instructions in the Operation Manual ................................................ 16
5.2 Personnel training .................................................................................................................. 16
6 Transport and storage ................................................................................. 16
6.1 Testing upon acceptance ...................................................................................................... 16
6.2 Packaging / return transport ................................................................................................. 17
7 Unpacking, Setup and Commissioning ..................................................... 19
7.1 Installation Site, Location of Us e .......................................................................................... 19
7.2 Unpacking and checking ....................................................................................................... 19
7.2.1 Placing ...................................................................................................................................... 21
7.3 Mains connection ................................................................................................................... 24
7.3.1 Turning On the Power .............................................................................................................. 25
7.4 Initial Commissioning ............................................................................................................ 25
7.5 Connection of peripheral devices ......................................................................................... 26
8 Adjustment ................................................................................................... 26
8.1 Automatic adjustment via PSC function .............................................................................. 26
8.2 Time-controlled automatic adjustment ................................................................................ 28
8.3 Manual adjustment via key [CAL-key] .................................................................................. 29
8.3.1 Setting adjustment function for CAL-key .................................................................................. 29
8.3.2 Adjustment with internal weight ................................................................................................ 29
8.3.3 Adjustment test with internal weight ......................................................................................... 30
8.3.4 Adjustment with external weight ............................................................................................... 30
8.3.5 Adjustment test with external weight ........................................................................................ 31
8.4 Adjustment log ....................................................................................................................... 32
8.5 Regular inspections ............................................................................................................... 33
9 Verification ................................................................................................... 35
ABP-BA-e-1810 3
10 Basic Operation ........................................................................................... 36
10.1 Activate standard weighing mode ........................................................................................ 36
10.2 Simple weighing ..................................................................................................................... 36
10.3 Taring ....................................................................................................................................... 37
10.4 Underfloor weighing ............................................................................................................... 38
10.5 Switch off the balance............................................................................................................ 39
10.6 Switch-over weighing unit ..................................................................................................... 39
10.7 Change readability (1D/10D) (not availab le for verified models) ....................................... 39
10.8 Display Tare / Net / Gross ...................................................................................................... 40
10.9 Display decimal dot as point or comma............................................................................... 41
11 Menu ............................................................................................................. 42
11.1 Navigation in the menu .......................................................................................................... 42
11.1.1 Standard weighing mode ..................................................................................................... 43
11.1.2 Weighing settings ................................................................................................................. 44
11.1.3 System Settings ................................................................................................................... 46
11.1.4 Application settings .............................................................................................................. 48
11.2 Menu overview ........................................................................................................................ 48
11.3 Resetting the menu ................................................................................................................ 49
11.4 Menu Lock ............................................................................................................................... 50
11.5 Log menu settings .................................................................................................................. 51
11.6 Menu history ........................................................................................................................... 52
12 Description of individual functions ............................................................ 53
12.1 Zero setting and tare function ............................................................................................... 53
12.2 Zero tracking function............................................................................................................ 53
12.3 Auto Tare function .................................................................................................................. 54
12.4 Settings for Stability and Response ..................................................................................... 55
12.4.1 Stability and reaction settings via „Smart Setting display“ (without invoking menu) ............ 55
12.5 Dosing...................................................................................................................................... 56
12.5.1 Standstill width ..................................................................................................................... 57
12.6 Weighing Units ....................................................................................................................... 58
12.7 User administration log-in function ...................................................................................... 58
13 Balance settings .......................................................................................... 65
13.1 Screen saver ........................................................................................................................... 65
13.2 Display settings in operating mode ...................................................................................... 65
13.3 Balance identification no. ...................................................................................................... 66
13.4 Entering date and time ........................................................................................................... 66
13.5 Date format .............................................................................................................................. 66
13.6 Brightness of display ............................................................................................................. 67
13.7 Audio signal on pressing key or display of stability .......................................................... 67
13.8 User language ......................................................................................................................... 67
14 Application Functions ................................................................................. 68
14.1 Parts counting ........................................................................................................................ 69
14.1.1 Settings ................................................................................................................................ 69
14.1.2 Setting the display ................................................................................................................ 71
14.1.3 Part counting ........................................................................................................................ 71
14.1.4 Change settings ................................................................................................................... 72
14.1.5 Switching between counting and weighing mode ................................................................ 72
14.2 Percent determination............................................................................................................ 73
14.2.1 Settings ................................................................................................................................ 73
14.2.2 Setting the display ................................................................................................................ 75
14.2.3 Performing calculation of percentage .................................................................................. 76
14.2.4 Change settings ................................................................................................................... 76
14.2.5 Switching between percentage and weighing mode ............................................................ 77
4 ABP-BA-e-1810
14.3 Determining the density of solid matter and fluids ............................................................ 77
14.4 Totalization .............................................................................................................................. 78
14.5 Formulation ............................................................................................................................. 81
14.5.1 Free formulating ................................................................................................................... 81
14.5.2 Define and process formulations ......................................................................................... 84
14.5.3 Change recipe ...................................................................................................................... 88
14.5.4 Sample log (KERN YKB-01N): ............................................................................................. 89
14.6 Preparing buffer solutions..................................................................................................... 90
14.7 Sample preparation ................................................................................................................ 93
14.7.1 Changing saved samples ..................................................................................................... 95
14.8 Statistics .................................................................................................................................. 96
14.9 Control weighing and target weighing ................................................................................. 98
14.9.1 Target weighing .................................................................................................................... 98
14.10 Control weighing (Pass / Fail evaluation) ...................................................................... 100
14.11 Minimum sample weight .................................................................................................. 102
15 Interfaces .................................................................................................... 103
15.1 Connect printer ..................................................................................................................... 103
15.2 Connect PC ........................................................................................................................... 103
15.3 Connect serial devices / connect programmable controller (SPS / PLC) ....................... 104
15.4 Interface cable (RS232) ........................................................................................................ 104
15.5 Data transmission format .................................................................................................... 105
15.6 Interface commands............................................................................................................. 106
15.7 Communication parameters ................................................................................................ 110
15.7.1 Select standard setting ....................................................................................................... 110
15.7.2 User defined settings (display example for KERN YKB-01N ............................................. 111
15.8 Issue functions ..................................................................................................................... 113
15.8.1 Automatic data output / Auto Print function ........................................................................ 113
15.8.2 Continuous data output ...................................................................................................... 114
15.8.3 GLP Output Function ......................................................................................................... 116
15.8.4 Defining output details ........................................................................................................ 117
15.10 USB connection ............................................................................................................... 118
15.10.1 Edit weighing data, adjustment logs and screenshots to USB medium ............................ 119
15.10.2 Data transfer by means of barcode reader ........................................................................ 122
16 Servicing, maintenance, disposal ............................................................ 123
16.1 Cleaning ................................................................................................................................ 123
16.2 Servicing, maintenance ....................................................................................................... 124
16.3 Disposal ................................................................................................................................. 125
17 Instant help ................................................................................................. 125
18 Ionizer (factory option) .............................................................................. 126
18.1 General .................................................................................................................................. 126
18.2 Basic Safety Precautions .................................................................................................... 126
18.3 Technical Data ...................................................................................................................... 128
18.4 Commissioning ..................................................................................................................... 128
18.5 Maintenance and cleaning ................................................................................................... 130
ABP-BA-e-1810 5
1 Technical data
KERN ABP 100-4M ABP 100-5DM
Item no./ Type TABP 100-4M-A TABP 100-5DM-A
Readability (d) 0.0001 g 0.00001 g / 0.0001 g
Weighing range (max) 120 g 52 g / 120 g
Minimum load (Min) 0.01 g 0.001 g
Verification value (e) 0.001 g 0.001 g
Verification class I I
Reproducibility 0.0001 g 0.00002 g / 0.0001 g
Linearity ± 0.0002 g ± 0.00005 g / 0.0002 g
Stabilization time 2 s 2 s / 8 s
Adjustment weight internal
Warm-up time 8 h
Weighing Units mg, g, ct (unverified)
g, ct (verified)
Smallest component weight
for part counting
1mg (under lab conditions*)
10 mg (under normal conditions**)
Reference quantities at
piece counting
1 - 100
Weighing plate, stainless steel ø 91mm
Dimensions caisse
(l x L x h) [mm]
212 x 367 x 345 212 x 411 x 345
Dimensions
Glass wind screen [mm]
170 x 165 x 220 mm (weighing space)
Net weight (kg) 7 8
Permissible
ambient condition
+5° C to +40° C
Humidity of air 20 ~ 85 % relative (not condensing)
Power pack
Input voltage
AC 100 -240 V, 300 mA 50/60Hz
or
AC 100 -240 V, 320 – 190 mA 50/60Hz
Weighing scales
Input voltage
DC 12 V, 1,0 A
Degree of pollution 2
Overvoltage category Category II
Metres in height Up to 2000 m
Place of installation In sealed rooms only
Interfaces RS-232, USB (type B, PC connection), USB host (type A)
6 ABP-BA-e-1810
KERN ABP 200-4M ABP 200-5DM ABP 300-4M
Item no./ Type TABP 200-4M-A TABP 200-5DM-A TABP 300-4M-A
Readability (d) 0.0001 g 0.00001 g / 0.0001 g 0.0001 g
Weighing range (max) 220 g 102 g / 220 g 320 g
Minimum load (Min) 0.01 g 0.001 g 0.01 g
Verification value (e) 0.001 g 0.001 g 0.001 g
Verification class I I I
Reproducibility 0.0001 g 0.00005 g / 0.0001 g 0.00015 g
Linearity ± 0.0002 g ± 0.0001 g / 0.0002 g ± 0.0003 g
Stabilization time 2 s 2 s / 8 s 2 s
Adjustment weight internal
Warm-up time 8 h
Weighing Units mg, g, ct (unverified)
g, ct (verified)
Smallest component weight
for part counting
1mg (under lab conditions*)
10 mg (under normal conditions**)
Reference quantities at
piece counting
1 - 100
Weighing plate, stainless steel ø 91mm
Dimensions caisse
(l x L x h) [mm]
212 x 367 x 345 212 x 411 x 345 212 x 367 x 345
Dimensions
Glass wind screen [mm]
170 x 165 x 220 mm (weighing space)
Net weight (kg) 7 8 7
Permissible
ambient condition
+5° C to +40° C
Humidity of air 20 ~ 85 % relative (not condensing)
Power pack
Input voltage
AC 100 -240 V, 300 mA 50/60Hz
or
AC 100 -240 V, 320 – 190 mA 50/60Hz
Weighing scales
Input voltage
DC 12 V, 1,0 A
Degree of pollution 2
Overvoltage category Category II
Metres in height Up to 2000 m
Place of installation In sealed rooms only
Interfaces RS-232, USB (type B, PC connection), USB host (type A)
ABP-BA-e-1810 7
* Smallest component weight for part counting - under lab conditions:
There are ideal ambient conditions for high-resolution counting
The parts to be counted are not scattered
** Smallest component part for part counting – under normal conditions:
There are unsteady ambient conditions (draft, vibrations)
The parts to be counted are being scattered
2 Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce
For verified weighing scales (= weighing scales assessed for
conformity) a declaration of
conformity is included in the scope of
delivery.
8 ABP-BA-e-1810
3 Appliance overview
3.1 Components
Models d = 0.0001 g Mode. d = 0.00001 g/0.0001 g
Pos. Description
1 Keyboard
2 Bubble level
3 Display
4 Windshield
5 Weighing pan
6 Fastening point ionizer (optional)
7 Glass wind screen
8 USB host port
9 Levelling screw
ABP-BA-e-1810 9
Rear view:
Models d = 0.0001 g Models d = 0.00001 g/0.0001 g
Pos. Description
10 Serial interface (RS232)
11 USB device
12 Port for ionizer
13 Connector for AC adapter
14 Fastening point for anti-theft device
16 Fastening lug for anti-theft chain or wire
17 Port for power pack
18 External electronics box
10 ABP-BA-e-1810
3.2 Keyboard
Button Description
Function
Short key pressing
Long key pressing
In menu
[ON/OFF]
Switching between
operating and
standby mode
-
Return to
weighing mode
[1d/10d]
Readability
change
[CAL]
Start adjustment
Call setup menu
"Adjustment"
-
[PRINT]
Data output to
external device
(weighing mode)
Call setup menu
"Print"
[TARE]
Taring
Zeroing
Call setup "Zero
Setting / Taring"
[MENU]
• Call up menu
• Call application
specific settings
• Call Statistics
[Ionizer]
Ionizer on/off
(Factory option)
Call Setup Menu
Ionizer
(Factory option)
[OK] - -
Confirm
input
ABP-BA-e-1810 11
[R]
Change reaction
setting for display
Select menu
item.
Navigation button
[UNIT]
Weighing mode:
Switch-over weighing
unit.
Counting mode:
Display single weight
Calculate
percentage:
Display reference
weight
Call setup menu
"Units"
Scroll forward in
menu
Navigation button
[F]
Switch over
weighing mode /
application mode
Scroll
backwards in
menu
Navigation button
[S]
Change stability
setting of display
Select menu
item.
Navigation button
3.2.1 Numeric entry
Button
Description
Function
Navigation button
Flashing digit (0 – 9) or
increase character (, [blank], -, A – Z)
Navigation button
Flashing digit (0 – 9) or
reduce character (, [blank], -, A – Z)
Navigation button
Digit selection to the right
Navigation button
Digit selection to the left
Navigation button
Confirm entry
ESC Cancel input
12 ABP-BA-e-1810
3.3 Display
Apart from the display of the weighing result, all functions of the menu may be
accessed from here. The display will vary, depending on the weighing scale being
either in operating or setting mode.
Special keys (e.g. CAL-, TARE-, PRINT-key) provide fast and purposeful access to
the individual setup menu. The navigation keys allow intuitive control.
Display example operating mode:
The display is sub-divided into four areas.
No.
Status Description
1 Operating
mode
Current application
2 User field Display of logged-in user and current time
Data output to external devices
USB-storage medium is connected
Menu Lock
3 Measuring
Value
Display of weighing result in current weighing unit
Stability display
Net weight
Tare weight
Gross weight
Hold function enabled
Zero indicator
Negative weighed value
Net weight during formulating
Tolerance marker
Capacity display
The non-verified value is given in
brackets in verified scales.
ABP-BA-e-1810 13
4
Status display
Current settings
Minimum initial weight
Settings for Stability and Response
Printer settings
Auto Print function active
Flashing during automatic Output
continuous output enabled
Flashing during continuous Output
Weighing settings
Dispensing mode
Zero tracking (Autom. zero point
correction)
Statistics
Error reports
Adjustment required (PSC-function)
Inadequate power supply
Defective USB-connection
Display example setting mode:
After pressing the MENU-key in weighing mode the display will change to setting
mode.
Example of illustration: For calling system settings see chap. 11.1.3
14 ABP-BA-e-1810
Symbol Description Application icons
Level 1
Selecting an
application
Weighing mode
Parts counting
Percent determination
Density determination <Solid matter>
Density determination <Fluids>
Totalization
Formulation
Autom. Processing a recipe
Produce a buffer solution
Produce an analysis sample
Symbol Description Application icons
Level 2
Icon of selected
application
Available settings will be shown on level 1.
Level 1
Weighing settings
Dosing
Zero tracking
Level 1
System Settings
System Settings
Settings <Print>
Settings <Save data>
Settings <Communication>
Settings <Adjustment>
Settings <User>
Level 1
History
The last 10 menu steps will be displayed.
For further information about the operation of the display, see chap. 11.1
The icon for the
application selected
will be shown
ABP-BA-e-1810 15
4 Basic Information (General)
4.1 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
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
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.
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
16 ABP-BA-e-1810
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 Opera tion Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
All language versions contain a non-binding translation.
The original German is binding.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 T ransport 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.
ABP-BA-e-1810 17
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.
Illustration example models d = 0.0001 g
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the
weighing platform, power unit etc. against shifting and
damage.
Put network adapter and accessories in the small box
Lift scale with both hands
18 ABP-BA-e-1810
ABP-BA-e-1810 19
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.
Therefore, observe the following for the installation site:
• 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 weighed items 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.
7.2 Unpacking and checking
Remove device and accessories carefully from packaging, remove packaging
material and place device at the planned work place. Check if that there has been no
damage and that all packing items are present.
20 ABP-BA-e-1810
Scope of delivery / serial accessories
Pos. Description
1 Balance
2 Weighing pan
3 Carrier weighing pan
4 Centring ring (Models d = 0.0001 g only)
5 Protective cover
6 Mains adapter
7 Holder for adapter cable (Models d = 0.0001 g only)
8 Operating manual
9 External electronics box
10 Guard plate
11 Windshield
12 Multi-function weighing platform
13 Support multi-function weighing platform
Models d = 0.00001 g/0.0001 g only:
ABP-BA-e-1810 21
7.2.1 Placing
The right place is decisive for the accuracy of the weighing results of highresolution precision balances (see chap. 7.1).
1. Attach holder for adapter cable (Models d = 0.0001 g only)
Pull off protective film and attach as shown on image.
2. Installation of weighing plate
Models d = 0.0001 g
Attach centering ring, carrier of weighing plate and weighing plate in order.
Attach the safety hood
22 ABP-BA-e-1810
Mode. d = 0.00001 g/0.0001 g
Attach centering ring, carrier of weighing plate and weighing plate in order.
Attach the safety hood
Place the guard plate carefully in the weighing chamber
ABP-BA-e-1810 23
3. Install the multi-function weighing platform (Models = 0.00001 g/0.0001 g
only)
Disconnect scale from power
supply.
Remove standard weighing plate as
shown on image.
Install multi-function weighing
platform together with the support.
Pay due attention to centring!
Application examples:
Adjustment will be required after exchanging the weighing platform, for
instructions see chap. 8
Standard weighing platform Support multi-function weighing platform
24 ABP-BA-e-1810
4. Levelling
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
Check levelling regularly
7.3 Mains connection
Select a country-specific power plug and insert it in the mains adapter.
Check, whether the voltage acceptance on the scales is set correctly.
Do not connect the scales to the power mains unless the information on
the scales (sticker) matches the local mains voltage.
Only use KERN original mains adapter. Using other makes requires
consent by KERN.
Important:
Before starting your weighing balance, check the mains cable for
damage.
Ensure that the power unit does not come into contact with liquids.
Ensure access to mains plug at all times.
ABP-BA-e-1810 25
7.3.1 Turning On the Power
Models d = 0.0001 g Mode. d = 0.00001 g/0.0001 g
Supply power to balance via mains
adapter. The display lights up and the
balance carries out a selftest. Internal
adjustment will be started automatically
(See chap.8.3.2). The motor noise of the
loading system for the internal
adjustment weight will be audible.
You can cancel the adjustment by
pressing the ON/OFF key.
The selftest is completed when „OFF“
appears on the display. From that point
onwards the weighing scale will be in
standby mode. The weighing balance will
remain switched on as long as it is
connected to the power supply.
To turn the display on/off, press the
ON/OFF key.
When the log-in function is enabled, use
the navigation keys to select the
respective user and enter password, see
chap. 12.7
7.4 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.
26 ABP-BA-e-1810
7.5 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.
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.
• Avoid vibration and air flow.
• Always carry out adjustment with the standard weighing platform in place.
• To cancel internal adjustment, press the ON/OFF key.
•
When an optional printer is connected and the GLP function is connected,
the adjustment log will be edited, see chap. 8.4
8.1 Automatic adjustment via PSC function
Force-compensated scales react sensitively to changes in temperature. The higher
the sensitivity of the scale, the more pronounced the effect. The temperature
controlled PSC function enables the scale to automatically correct this effect.
PSC stands for Perfect Self Calibration and facilitates fully automatic internal scale
adjustment by means of an internal weight, based on time and/or temperature
criteria.
Adjustment in weighing mode is carried out automatically under the following
conditions:
(1) If there is a change in ambient temperature (∆t 1°C)
(2) When about four hours has passed since the previous calibration.
(3) When the balance is switched from standby status to weighing mode
and condition (1) or (2) has been met.
ABP-BA-e-1810 27
If one of the above conditions was met in
weighing mode, the weight symbol
flashes for about two minutes in order to
notify the pending adjustment; During
operation, the display will automatically
change and the motor sound of the weight
loading system is heard. In order to ensure
proper PSC operation, prevent vibrations and
air flow.
• The PSC function will be enabled throughout in verified models.
• Also, no measurements can be made during automatic adjustment.
• When the weight symbol
starts flashing while the weighing platform is
loaded the following message will appear
Unload weighing plate
• In order to prevent that adjustment is starting during a measuring
sequence, press the ON/OFF key immediately when the following display
appears.
This will cancel the adjustment and you can proceed with the measuring
sequence.
Sometime later adjustment will be requested again by the flashing weight
symbol .
28 ABP-BA-e-1810
8.2 Time-controlled automatic adjustment
With the help of its internal adjusting weight and integrated clock the balance can be
set to carry out automatic adjustment at set times (up to three times daily). This
function is a very convenient function, when adjustment reports are desired to be
made for regular adjustments, or when wishing span adjustments during break times
to avoid interruption of measurement work.
The weight symbol blinks for about two minutes as notification of span calibration
before it begins. Automatic adjustment can be stopped by actuating the [ON/OFF]
key during this message.
Parameter setting:
Press and hold the CAL-key for approx.
3 sec. and the menu for <CAL key>
setting will be displayed.
Use the navigation keys to select <Timer
CAL> and confirm using the OK-key.
Select first time <Timer 1> and confirm
using the OK-key.
Select setting [on] or [off] and confirm
using the OK-key.
Select [Setting] to enter time.
Use the navigation keys to enter time
and confirm using the OK-key.
Repeat these operating steps to set the
time for <Timer 2> / <Timer 3>.
ABP-BA-e-1810 29
8.3 Manual adjustment via key [CAL-key]
8.3.1 Setting adjustment function for CAL-key
It is possible to start the preset adjustment method without having to access the
menu. The Set Adjustment Procedure may be set by simply pressing the [CAL]-key
when in weighing mode.
Press and hold the CAL-key for approx. 3
sec until the <CAL key> setting menu
appears.
Confirm using the OK-key and the available
settings will be displayed.
Adjustment with internal weight, see chap. 8.3.2
For adjustment test using internal weight,
see chap. 8.3.3
Adjustment using external weight, see chap. 8.3.4
Adjustment test with external weight,
see chap. 8.3.5
Select Settings with the help of the navigation
keys and confirm using the OK-key.
Use the ON/OFF button to return into
weighing mode
8.3.2 Adjustment with internal weight
Ensure that the CAL-key is assigned to the <Internal Weight Calibration> function,
see chap. 8.3.1.
Press CAL key, adjustment is started.
After successful adjustment the balance
automatically returns to weighing mode.
In case of an adjustment error (e.g. objects
on the weighing plate) the display will show
an error message, repeat adjustment.
30 ABP-BA-e-1810
8.3.3 Adjustment test with internal weight
During adjustment tests the balance automatically compares the saved value of the
adjustment weight with the actual value. This is only a check, i.e. no values are
changed.
Ensure that the CAL-key is assigned to the <Internal Weight Test> function, see
chap. 8.3.1.
To start the test, press the CAL-key.
The difference to the previous adjustment will
be displayed.
8.3.4 Adjustment with external weight
Ensure that the CAL-key is assigned to the <External Weight Calibration> function,
see chap. 8.3.1.
Press the CAL-key and the weight value for
the adjustment weight will be flashing on the
display. (To change the weight value, follow
the instruction on the display*).
Put the required adjustment weight carefully
in the centre of the weighing pan. Close wind
screen doors completely. Wait until the
request for removing the adjustment weight is
displayed.
Take away adjustment weight.
*The adjustment weight to be used depends on the capacity of the scale.
Carry out adjustment as near as possible to the balance’s maximum weight
(recommended adjustment weight see chap. 1). Weights of different nominal
values may be used for adjustment but are not optimal for technical
measuring. Info about test weights can be found on the Internet at:
http://www.kern-sohn.com
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