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
Counting balances
KERN CXB
Version 2.2
04/2016
GB
CXB-BA-e-1622
2 CXB-BA-e-1622
GB
KERN CXB
Version 2.2 04/2016
Operating manual
Counting balances
Contents
1 Technical data ................................................................................................ 4
2 Appliance overview ....................................................................................... 6
2.1 Overview of display .................................................................................................................. 7
2.1.1 Display weight ............................................................................................................................. 8
2.1.2 Display reference weight ............................................................................................................ 8
2.1.3 Display quantity ........................................................................................................................... 8
2.1.4 Battery charge status display ...................................................................................................... 8
2.2 Keyboard overview ................................................................................................................... 9
3 Basic Information (General) ........................................................................ 11
3.1 Proper use ............................................................................................................................... 11
3.2 Improper Use........................................................................................................................... 11
3.3 Warranty .................................................................................................................................. 11
3.4 Monitoring of Test Resources ............................................................................................... 12
4 Basic Safety Precautions ............................................................................ 12
4.1 Pay attention to the instructions in the Operation Manual ................................................ 12
4.2 Personnel training .................................................................................................................. 12
5 Transport and storage ................................................................................. 12
5.1 Testing upon acceptance ...................................................................................................... 12
5.2 Packaging ................................................................................................................................ 12
6 Unpacking, Setup and Commissioning ..................................................... 13
6.1 Installation Site, Location of Use .......................................................................................... 13
6.2 Unpacking ............................................................................................................................... 13
6.2.1 Placing ...................................................................................................................................... 14
6.2.2 Scope of delivery ...................................................................................................................... 14
6.3 Mains connection ................................................................................................................... 14
6.4 Rechargeable battery operation ............................................................................................ 14
6.5 Initial Commissioning ............................................................................................................ 14
6.5.1 Start-up ..................................................................................................................................... 15
6.5.2 Switching Off............................................................................................................................. 15
6.5.3 Balance zero display ................................................................................................................. 15
6.5.4 Stability display ......................................................................................................................... 15
6.6 Linearisation (verified m o dels only) ..................................................................................... 16
6.7 Adjustment with external weight .......................................................................................... 19
6.7.1 Adjustment models CXB........................................................................................................... 20
6.7.2 Adjustment models CXB_M...................................................................................................... 22
7 Verification ................................................................................................... 24
7.1 Adjustment switch and seal .................................................................................................. 25
CXB-BA-e-1622 3
8 Parts counting .............................................................................................. 26
8.1 Determination of the reference weight by weighing ........................................................... 26
8.2 Numeric entering of the reference weight ........................................................................... 27
8.3 Automatic re ference optimization ......................................................................................... 27
8.4 Save/call up reference weight – Pre-Set function ............................................................... 28
8.4.1 Save .......................................................................................................................................... 28
8.4.2 Call-up ...................................................................................................................................... 29
8.5 Count with tolerance control - Fill to target ......................................................................... 30
8.5.1 Set tolerance value for target number of pieces ....................................................................... 30
8.5.2 Set tolerance value for target weight ........................................................................................ 31
9 Taring ............................................................................................................ 32
9.1 Determination of the tare weight by weighing ..................................................................... 32
9.2 Numerical input of tare (PRE-TARE) ..................................................................................... 33
10 Totalization ................................................................................................... 36
10.1 Add up “Number of parts" ..................................................................................................... 36
10.2 Add up “Weight" ..................................................................................................................... 37
10.3 Delete stored values ............................................................................................................... 38
11 Menu models CXB ....................................................................................... 39
11.1 Navigation in the menu .......................................................................................................... 39
11.2 Overview main menu.............................................................................................................. 39
11.3 Menu overview function menu „01 FnC“ – Models CXB .................................................... 40
12 Menu models CXB-M ................................................................................... 42
13 Operation ...................................................................................................... 43
13.1 Background illumination of the display - FnC 01 ................................................................ 43
13.2 Automatic switch-off function - FnC 02 ............................................................................... 45
13.3 Setting for calculation of reference value - FnC 03 ............................................................. 46
13.4 Automatic re ference optimisation - FnC 04 ......................................................................... 47
13.5 Pre-Tare setting - FnC 09 ....................................................................................................... 48
13.6 Audio signal during tolerance weighing - FnC 10 ............................................................... 49
14 Servicing, maintenance, disposal .............................................................. 50
14.1 Cleaning................................................................................................................................... 50
14.2 Servicing, maintenance ......................................................................................................... 50
14.3 Disposal ................................................................................................................................... 50
15 Instant help ................................................................................................... 51
16 Declaration of Conformity ........................................................................... 52
4 CXB-BA-e-1622
1 Technical data
KERN CXB 3K0.2 CXB 6K0.5 CXB 15K1 CXB 30 K2
Readability (d) 0.2 g 0.5 g 1 g 2 g
Weighing range (max) 3 kg 6 kg 15 kg 30 kg
Reproducibility 0.2 g 0.5 g 1 g 2 g
Linearity ± 0,4 g ± 1,0 g ± 2 g ± 4 g
Stabilization time 2 sec. 2 sec. 2 sec. 2 sec.
Recommended adjustment
weight, not added (class)
3 kg (M1) 5 kg (M1) 15 kg (M1) 30 kg (M1)
Weighing unit g g g g
Minimum piece weight 0.1 g 0.2 g 0.5 g 1 g
Heating time (operating
temperature)
30 min
Reference quantity freely selectable
Net weight (kg) 4 kg
Permissible ambient
condition
-10° C to 40° C
Humidity of air 15% - 85% (non-condensing)
Weighing plate, stainless
steel
300 x 225 mm
Dimensions of the housing
(B x D x H)
300 x 330 x 110 mm
Mains connection Mains adaptor 230 V, 50/60 Hz ; 9 V DC balance, 800 mA
Rechargeable battery Without display backlighting:
Service life c. 200 hours / loading time ca. 8 hrs.
With display backlighting:
Operating time ca. 60h. / loading time ca. 8 hrs.
CXB-BA-e-1622 5
KERN
CXB
3K1NM
CXB
6K2NM
CXB
15K5NM
CXB
30K10NM
Readability (d) 1 g 2 g 5 g 10 g
Weighing range (max) 3 kg 6 kg 15 kg 30 kg
Minimum weight (min) 20 g 40 g 100 g 200 g
Verification value (e) 1 g 2 g 5 g 10 g
Reproducibility 1 g 2 g 5 g 10 g
Linearity 2 g 4 g 10 g 20 g
Verification class III III III III
Stabilization time 2 sec. 2 sec. 2 sec. 2 sec.
Recommended adjustment
weight, not added (class)
3 kg (M1) 6 kg (M1) 15 kg (M1) 30 kg (M1)
Weighing unit kg kg kg kg
Minimum piece weight 100 mg 200 mg 500 mg 1 g
Heating time (operating
temperature)
10 min
Reference quantity freely selectable
Net weight (kg) 4 kg
Permissible ambient
condition
-10° C to 40° C
Humidity of air 15% - 85% (non-condensing)
Weighing plate, stainless
steel
300 x 225 mm
Dimensions of the housing
(B x D x H)
300x330x110 mm
Mains connection Net adapter 220-240 V, 50 Hz;
Rechargeable battery Without display backlighting:
Service life c. 200 hours / loading time ca. 8 hrs.
With display backlighting:
Operating time ca. 60h. / loading time ca. 8 hrs.
6 CXB-BA-e-1622
2 Appliance overview
1. Bubble level
2. Battery compartment
3. Connection for mains cable
4. ON/OFF switch
1
3
4
2
CXB-BA-e-1622 7
2.1 Overview of display
Weight
Reference weight
Loading status display
Quantity
8 CXB-BA-e-1622
2.1.1 Display weight
Here, the weight of your goods is displayed.
Overlay indicates:
a Zeroing display
PRE-
TARE
Tare in memory
Battery very low
2.1.2 Display reference weight
The reference weight of a sample is shown here. This value is either entered by user
of calculated by balance.
Overlay indicates:
Placed number of pieces insufficient for reference calculation
Placed reference weight insufficient for reference calculation
2.1.3 Display quantity
Here, all the parts placed on balance are immediately displayed by number.
Overlay indicates:
M+
Data in summation memory
Stability display
2.1.4 Battery charge status display
red
Battery is almost discharged
green
Rechargeable battery completely
reloaded
CXB-BA-e-1622 9
2.2 Keyboard overview
10 CXB-BA-e-1622
Selection Function
-
• Number keys
• Deleting key
• Move decimal point to the left
• Call counting with tolerance control
• Pre-Set function
• Store reference weights in memory
• Call stored reference weights
• Addition in sum memory
• Call up total memory
• Delete summation memory
• In menu confirm input
• Enter reference weight through weighing
• Display reference weight stored last
• Enter target number of pieces
• Numeric entry reference weight
• Display reference weight stored last
• Enter target weight
• Zeroing key
• Back to weighing mode
• Taring key
• Enter numerical tare
• Move decimal point to the right and change to the next
menu item
• Decimal point
• Exit menu
CXB-BA-e-1622 11
3 Basic Information (General)
3.1 Proper use
The balance you purchased is intended to determine the weighing value of material
to be weighed. It is intended to be used as a “Non-automatic balance” i.e. the
material to be weighed is manually and carefully placed in the centre of the weighing
pan. As soon as a stable weighing value is reached the weighing value can be read.
3.2 Improper Use
Do not use balance for dynamic 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” (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. T he serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
3.3 Warranty
Warranty claims shall be voided in case
• Our conditions in the operation manual are ignored
• The appliance is used outside the described uses
• The appliance is modified or opened
• Mechanical damage or damage by media, liquids, natural wear and tear
• The appliance is improperly set up or incorrectly electrically connected
• The measuring system is overloaded
12 CXB-BA-e-1622
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this
test. Information is available on KERN’s home page (www.kern-sohn.com with
regard to the monitoring of balance test substances and the test weights required for
this. In KERN's accredited DKD calibration laboratory test weights and balances may
be calibrated (return to the national standard) fast and at moderate cost.
4 Basic Safety Precautions
4.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and commissioning, even if you
are already familiar with KERN balances.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transport and stora ge
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 Packaging
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.
Before sending, disconnect all connected cables and loose/movable parts.
Attach possibly existing transport safeguards. Secure all parts, e.g. weighing plate,
power unit etc., to prevent slipping and damage.
CXB-BA-e-1622 13
6 Unpacking, Setup and Commissioning
6.1 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 goods to be weighed or weighing container.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or remove
source of interference.
6.2 Unpacking
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
14 CXB-BA-e-1622
6.2.1 Placing
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
6.2.2 Scope of delivery
Serial accessories:
• Balance
• Weighing pan
• Mains adapter
• Protective cover
• Internal battery
• Operating manual
6.3 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.
6.4 Rechargeable battery operation
The optionally supplied battery is charged with the supplied power supply.
Before the first use, the battery should be charged by connecting it to the mains
power supply for at least 15 hours. The battery has a service life of c. 200 hours
without background illumination or 60 hours with background illumination. The
charging period for total charge is c. 8 hours
The appearance of the battery symbol in the weight display indicates that the
battery is almost exhausted. If no weighing process is carried out during the red LED
display, the balance will switch off automatically after about 20-30 minutes. Connect
the power adaptor as soon as possible to change the battery.
The LED display provides information about the battery's charging status.
red: Battery is almost discharged
green: Rechargeable battery completely reloaded
6.5 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. 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.
CXB-BA-e-1622 15
6.5.1 Start-up
Turn on scales with ON/OFF switch (left).
The balance will carry out a self-test As soon as the weight display shows "0" in all
the three display windows your balance is ready to weigh.
On CXP models (with RS 232) an internal number appears before the balance
counts down to zero.
0�
a
PRETARE
0�
0��
M+
6.5.2 Switching Off
• Turn off balance by operating the ON/OFF switch (left)
6.5.3 Balance zero display
Environmental influences can lead to the exact figure of zero not being displayed in
spite of an empty weighing dish. It is, however, possible to reset your balance to zero
at any time and thus ensure that weighing really does commence at zero. Setting to
zero when a weight is applied is only possible within a certain type-dependent range.
In the event that the balance cannot be reset to zero with an applied weight, this
range has been exceeded (± 0,2 % max).
To reset the balance to zero, press button . A triangle [ ] pops up next to the [ a ]
symbol on the display.
6.5.4 Stability display
If a triangle [ ] pops up next to the [ ] symbol on the display,
the balance is in a stable state. If the status is instable the [ ] display disappears.
16 CXB-BA-e-1622
6.6 Linearisation (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 monitoring of test resources, you can
improve this by means of linearization.
• 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 3.4 “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 3.4 “Testing instruments control”
Tab. 1: Adjustment points
Model
Load 0
Load 1
Load 2
Load 3
Load 4
Load 5
CXB 3K1NM
0
600 g
1.2 kg
1.8 kg
2.4 kg
3 kg
CXB 6K2NM
0
1.2 kg
2.4 kg
3.6 kg
4.8 kg
6 kg
CXB 15K5NM
0
3 kg
6 kg
9 kg
12 kg
15 kg
In verified models CXB-M, access to the adjustment is blocked.
To cancel the access lock, the adjustment switch at the lower side of the
balance must be switched from “
LOCK
” position to “
ADJ
” position.
Adjustment switch
CXB-BA-e-1622 17
Operation
After the adjustment switch having been set to position “ADJ” switch-on balance.
After the selftest, in the display appears:
Press the -button twice, in the display appears:
Press button, in the display appears
Ensure that there are no objects on the weighing pan.
Press button, in the display appears shortly
followed by
Place the first adjustment weight
Press button, in the display appears shortly
followed by
18 CXB-BA-e-1622
Operation
Place the second adjustment weight.
Press button, in the display appears shortly
followed by
Put on the third adjustment weight
Press button, in the display appears shortly:
followed by
Put on the forth adjustment weight
Press button, in the display appears shortly
followed by
Place the fifth adjustment weight
Press button, in the display appears shortly
CXB-BA-e-1622 19
Operation
followed by
The sixth adjustment item is displayed, by that way linearisation is completed.
Use to change to adjustment (see chap. 6.7.2 adjustment CXB-M –models)
After successful linearisation you will have to carry out an adjustment.
In case of an adjustment error or incorrect adjusting weight the display will show an
error message; repeat linearization process.
Cancel linearisation process: press .
6.7 Adjustment with external weight
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.
Procedure when adjusting:
In calibrated balances the adjustment function is switch locked. To carry out
adjustment, you will have to throw-over the unlock switch.
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization. Ensure that there are no objects on the weighing plate.
20 CXB-BA-e-1622
6.7.1 Adjustment models CXB
Operation
Ensure that there are no objects on the weighing plate.
The following appears in the display:
M+
0
Press : During display of „----“ press : “01 FnC” is displayed:
M+
0
12345
Press : „02 EC” is displayed:
Press : „
EC 00“
appears, the first digit flashes:
Use the numeric keyboard to enter „01“ and confirm by :
CXB-BA-e-1622 21
12345
(example)
Press , then press :
12345
(example)
The value of the adjustment weight to be used will appear flashing
Place the adjustment weight
Press : „EC01“ is displayed, digit „1“ flashes
Remove weight and press
Press again, now the adjustment process is completed.
M+
0
22 CXB-BA-e-1622
6.7.2 Adjustment models CXB_M
In verified models CXB-M, access to the adjustment is blocked.
To cancel the access lock, the adjustment switch at the lower side of the
balance must be switched from “LOCK” position to “ADJ” position.
Operation
After the adjustment switch having been set to position “ADJ” switch-on balance.
After the selftest, in the display appears:
Press button, in the display appears
Press button, in the display appears
Press button, zero point is being calculated. Ensure that there are no
objects on the weighing pan.
Adjustment switch
CXB-BA-e-1622 23
Press button, in the display appears shortly:
followed by:
(example)
The value of the adjustment weight entered as last will appear flashing.
Accept the value or enter the value of the adjustment weight to be used with help of
the numeric keyboard.
Place a weight with size of the entered adjustment weight and confirm by .
In the display appears briefly:
followed by:
Remove the adjustment weight, the display returns to „0“. Adjustment now is
completed.
Switch off the balance
Reset adjustment switch to „LOCK“
Switch the balance on again, the balance is now in weighing mode.
An error message will appear on the display should a adjustment error occur or
should the adjustment weight be incorrect. Turn balance off, then restart it and
repeat the adjustment process.
24 CXB-BA-e-1622
* The adjustment should be made with the recommended adjustment weight (see
chap. 1 "Technical data"). Weights of different nominal values may be used for
adjustment but are not optimal for technical measuring.
Info about adjustment weights can be found on the Internet at: http://www.kern-
sohn.com
7 Verification
General introduction:
According to EU directive 90/384/EEC balances must be officially verified if they are
used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purpose.
d) For manufacturing final packages.
In cases of doubt, please contact your local trade in standard.
After verification the balance is sealed at the indicated positions.
Verification of the balance is invalid without the "seal/lead seal".
Verification notes:
An EU type approval exists for balances described in their technical data as
verifiable. If a balance is used where obligation to verify exists as described above, it
must be verified and re-verified at regular intervals.
Re-verification of a balance is carried out according to the respective national
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!
Balances with obligation to verify must be taken out of operation if:
•
The we ighing result of the balance is outside the error limit. Therefore, in
regular intervals load balance with known test weight (ca. 1/3 of the max. load)
and compare with displayed value.
•
The reverification deadline has been exceeded.
CXB-BA-e-1622 25
7.1 Adjustment switch and seal
After a verification the balance is sealed at the indicated positions.
Verification of the balance is invalid without the "seal".
Position of the official seals:
SEAL
SEAL
SEAL
26 CXB-BA-e-1622
8 Parts counting
With parts counting you can either count parts into a container or remove parts from
a container. To count a greater number of parts the average weight per part has to
be determined with a small quantity (reference quantity). The larger the reference
quantity, the higher the counting exactness. High reference must be selected for
small parts or parts with considerably different sizes.
8.1 Determination of the reference weight by weighing
Set balance to zero and tare, as required.
0�
a
PRETARE
0�
0��
M+
Place a known number of parts on the balance as reference weight
118.3��
a
PRETARE
0�
0��
M+
If the "Weight" display is stable, enter the number of parts via number keys.
The input is shown in the unit-weight window.
118.3��
a
PRETARE
Weight
100�
Piece weight
1��
M+
Quantity
While the “
Number of pieces
” display is flashing (3 sec) confirm by button.
118.3��
a
PRETARE
SAnnP�
------��
M+
Dead stop control is carried out and the calculated reference weight appears on the
display.
118.3��
a
PRETARE
Weight
118.3��
a
PRETARE
Reference weight
100��
M+
Quantity
Now you can place the parts to be counted onto the weighing plate. All quantity
parameters of your goods to be weighed are displayed:
CXB-BA-e-1622 27
8.2 Numeric entering of the reference weight
If you know the reference weight/piece you can enter this via number keys.
Enter reference weight via number keys
0�
a
PRETARE
1.833
0
M+
Confirm with button
0�
a
PRETARE
1.833
Reference weight
0
M+
Now you can place the parts to be counted onto the weighing plate. All quantity
parameters of your goods to be weighed are displayed:
8.3 Automatic reference optimization
If it was impossible to determine a reference due to instable goods to be weighed or
an insufficient reference weight, the [ ] display will appear in the reference weight
window during reference calculation.
Overlay indicates:
Placed number of pieces insufficient for reference calculation
< 40 d
Placed reference weight insufficient for reference calculation
< 4/5 d
Add additional parts until the [ ] display disappears.
An audio signal indicates that reference optimization has been carried out.
At every reference optimisation, the reference weight is calculated anew. As the
additional pieces increase the base for the calculation, the reference also becomes
more exact.
28 CXB-BA-e-1622
8.4 Save/call up reference weight – Pre-Set function
There are 10 memory locations at your disposal (occupied via number keys 0 -9).
8.4.1 Save
Enter the reference weight to be stored
0.0��
a
PRETARE
100�
0
M+
Press button
Press button
Enter the storage location for the reference weight via the numeric keys (0 - 9)
(example)
Press the button, the reference weight is now allocated to a storage location.
0.0��
a
PRETARE
100�
0
M+
CXB-BA-e-1622 29
8.4.2 Call-up
When the reference weight is required at a later point in time it can be called by
pressing the button and entering the relevant storage location number.
Press button
Press button
Enter storage location (0 – 9) via the numeric keyboard
Press button
0.0��
a
PRETARE
100�
0
M+
The reference weight is displayed.
30 CXB-BA-e-1622
8.5 Count with tolerance control - Fill to ta r get
This function can be used to program a target number of pieces or target weight.
Reaching the target value is indicated by an audio-visual signal.
8.5.1 Set tolerance value for target number of pieces
Reaching the target value will be indicated by an audio signal and [-QtY-] will be
flashing in the reference window.
Press button
Press button
Use number keys to enter desired target number of pieces
Entered target value.
Corrections possible by
pressing button
Press button
Press button
Erase tolerance value:
When entering the target weight, enter value „0“
CXB-BA-e-1622 31
8.5.2 Set tolerance value for target weight
Reaching the target value will be indicated by an audio signal and [-YPSt-] will be
flashing in the reference window.
Press button
Press button
Use number keys to enter target value
Entered target value.
Corrections possible by
pressing button
Press button
Press button
Note:
To delete stored target values enter "0".
32 CXB-BA-e-1622
9 Taring
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.
9.1 Determination of the tare we i ght by we i ghing
Place empty tare container on the weighing plate. The total weight of the container is
displayed.
6.8�
a
PRETARE
0�
0��
M+
Press button
After dead stop control was carried out, the display is reset to "0". The weight of the
container is now internally saved. The zero display and the arrow next to the "PRE-
TARE" symbol appear.
0.0��
a
PRETARE
0�
0
M+
Place the goods to be weighed into the tare container. Read the weight of the
goods on the display.
Note:
The balance is able to only store one taring value at a time.
When the balance is unloaded the saved taring value is displayed with negative
sign.
To delete the stored tare, unload the weighing plate and then press the TARE
key; the [ ] display next to "PRE-TARE" disappears.
The taring process can be repeated any number of times. The limit is reached when
the whole weighing range is exhausted.
CXB-BA-e-1622 33
9.2 Numerical input of tare (PRE-TARE)
Pre-setting PRE-TARE mode
Make sure that no load is on the weighing plate
Press the -button, in the reference weight display appears flashing [PrEtA]
During this display enter the Pre-Tare value using the numeric keyboard
Press button
The Pre-Tare value will be displayed as a negative value.
In the menu select the menu item „
FnC 10
“:
Use the keys or to select the desired setting:
PRE-TARE setting "00" = no input of tare possible when weighing plate is loaded
PRE-TARE setting "01*" = input of tare weight possible regardless whether weighing
plate is loaded or unloaded
* = default setting
34 CXB-BA-e-1622
PRE-TARE setting „1“:
Objects present on weighing plate.
177.5�
a
PRETARE
1.7752�
100�
�
M+
Enter your tare weight via number keys.
177.5�
a
PRETARE
1.0�
177��
M+
Press button The net weight of the goods to be weighed is displayed
176.5�
a
PRETARE
1.7752�
99��
M+
Note:
To delete the stored tare, unload the weighing plate and then press the TARE
key; the [ ] display next to "PRE-TARE" disappears.
CXB-BA-e-1622 35
PRE-TARE setting „0“:
Remove all objects from weighing plate.
0�
a
PRETARE
0�
0��
M+
Press button
0.0��
a
PRETARE
PlETA�
-----�
�
M+
Enter tare via number keys.
6.8�
a
PRETARE
PlETA�
-----��
M+
Press button, tare weight is indicated as negative value
-6.8�
a
PRETARE
0�
-----�
�
M+
Put on tare container + goods to be weighed.
The net weight of the goods to be weighed is displayed
36 CXB-BA-e-1622
10 Totalization
The balance is equipped with a summation memory used for adding up of identical
counted parts to total quantity and total weight.
10.1 Add up “Number of parts"
Select reference weight and place number of par t s for first weighing.
118.3��
a
PRETARE
1.1833�
100�
�
M+
The display value is added to the summation memory by pressing the key.
-----��
a
PRETARE
ADD�
-----��
M+
The [ ] display next to "M+" indicates the stored value. After dead stop control was carried
out the balance will return automatically to counting mode.
118.3��
a
PRETARE
1�
100��
M+
118.3��
a
PRETARE
1.1833�
100��
M+
Place number of parts for second weighing and add t o memory.
Add and weigh more parts if needed as described above. Please note that the balance must
be unloaded between the individual weighing procedures.
This process can be repeated 99 times or until the weighing r ange of the balance is
exhausted.
Display of you saved weighing data:
With balance unloaded, press t he
button:
Total weight, number of weighing procedures as well as total parts counting appear 3 sec.
118.3��
a
PRETARE
Total weight placed on
balance
1�
Number weighing processes
100��
M+
Total parts counting placed
on balance
CXB-BA-e-1622 37
10.2 Add up “Weight"
Place weight on weighing plate.
118.3��
a
PRETARE
0�
0��
M+
The display value is added to the summation memory by pressing the button.
-----��
a
PRETARE
ADD�
-----��
M+
The [ ] display next to "M+" indicates the stored value. After dead stop control was
carried out the balance will return automatically to counting mode.
118.3��
a
PRETARE
1�
100��
M+
118.3��
a
PRETARE
0�
0��
M+
Place goods to be weighed for second weighing and add to memory.
Repeat sequence of operations, as required. Please note that the balance must be
unloaded between the individual weighing procedures.
This process can be repeated 99 times or until the weighing range of the balance is
exhausted.
Display of you saved weighing data:
With balance unloaded, press the key:
The total weight as well as the number or weighings will pop up for 3 sec.
118.3��
a
PRETARE
Total weight placed on
balance
1�
Number weighing
processes
0��
M+
38 CXB-BA-e-1622
Note:
Turning off the balance will result in a loss of all stored values.
10.3 Delete stored values
Unload balance and press the button. Stored values, total weight, total number of
pieces and number of weighings will be set to zero. The [ ] display next to "M+"
disappears.
CXB-BA-e-1622 39
11 M e nu m ode ls CXB
To adjust the balance to individual requirements, use the menu to change settings
for the balance
11.1 Navigation in the menu
• Press button, [-----] appears on the weight display. During this
display press the key, on the weight display appears [01 Func].
• Use to change to the next menu item and change decimal
place to the right
• Use to change to the left
• Confirm entry by
• Selecting function via the numeric keyboard
• Parameter selection via numeric keyboard
• Setting will be imported automatically
• To exit the menu, press the button
11.2 Overview main menu
Function menu
Adjustment
not documented
Exit menu
40 CXB-BA-e-1622
11.3 Menu overview function menu „
01 FnC“ –
Models CXB
Menu item Submenu
Description of function
FnC 01
Background
illumination of
the display
00
Background illumination always on
01
Background illumination on:
• during weighing
• when button is pressed
Background illumination automatically off when the
balance is not used for more than 10 minutes
02*
Background illumination off
FnC 02
Auto-Off
00*
Automatic shutdown switched off
01-10
Automatic shutdown adjustable after
1 to 10 minutes
FnC 03
Setting for
calculation of
reference value
00-15
The higher the value, the faster t he r eference value will
be calculated.
FnC 04
Automatic
reference
optimization
00
Automatic reference optimisation switched off
01*
Automatic reference optimisation switched on
FnC 05
A/D value
not documented
FnC 06
Zeroing range
not documented
FnC 07
Zeroing range
not documented
FnC 08
Finish add-on
function
not documented
CXB-BA-e-1622 41
FnC 09
Pre-Tare
settings
00*
Pre-Tare not possible, when sample on the weighing
plate
01
Pre-Tare possible when sample on the weighing plate
FnC 10
Audio signal
during
checkweighing
00
Audio signal with instable weighing value
01
Audio signal with stable weighing value
FnC 11
Settings add-on
function 1
not documented
FnC 12
Settings add-on
function 2
not documented
FnC 13
not documented
* = default setting
42 CXB-BA-e-1622
12 M e nu m ode ls CXB-M
Call up menu:
In weighing mode press , and during display of “---------“ press , in
the display appears
Change to the next menu item
at numeric input cursor to the right
Confirm entry
Exit menu
at numeric input cursor to the left
FnC 01 FnC 01
Display background illumination
FnC 02
Auto Off
FnC 03-13
not documented
02 EC
not documented
03 RBL
not documented
00 ESC
Exit menu
CXB-BA-e-1622 43
13 Operation
13.1 Background illumination of the display - FnC 01
The back light for the display can be adjusted as follows:
In weighing mode press , and during display of “---------“ press , in
the display appears
Press , in the display appears
Use the numeric keyboard to enter „01“
Press , in the reference weight display appears „01“ flashing
Use the numeric keyboard to enter the desired setting and confirm by .
44 CXB-BA-e-1622
00
Background illumination of the display always on
01
Automatic background illumination:
The display lights up automatically during the weighing process or when
a button is pressed.
The display extinguishes after 10 minutes, when the balance is not in
operation.
02
Background illumination off
The display appears in the selected setting
Return to weighing mode using
CXB-BA-e-1622 45
13.2 Automatic switch-off function - FnC 02
The automatic switch-off function can be adjusted as follows:
In weighing mode press , and during display of “---------“ press , in
the display appears
Press , in the display appears
Use the numeric keyboard to enter „02“
Press , in the reference weight display appears „00“ flashing
Use the numeric keyboard to enter the desired setting and confirm by .
Return to weighing mode using
00
Automatic shutdown function is switched off
01-10
Automatic shutdown after 1 to 10 minutes
46 CXB-BA-e-1622
13.3 Setting for calculation of reference value - FnC 03
For calculation of the reference value, values between 0 and 15 can be adjusted:
The higher the value, the faster the reference value will be calculated.
In weighing mode press , and during display of “---------“ press , in
the display appears
Press , in the display appears
Use the numeric keyboard to enter „03“, „08“ will be displayed flashing
Use the numeric keyboard for the required setting and confirm by .
Return to weighing mode using
CXB-BA-e-1622 47
13.4 Automatic reference optimisation - FnC 04
To optimize the calculated average piece weight automatically, add further parts
whose number is smaller than that of the first reference determination. For each
reference optimization the average piece weight is newly calculated. As the
additional pieces increase the base for the calculation, the reference also becomes
more exact.
00
Automatic reference optimisation is switched off
01
Automatic reference optimisation is switched on
In weighing mode press , and during display of “---------“ press , in
the display appears
Press , in the display appears
Use the numeric keyboard to enter „04“ and confirm by , the value
entered as last will be displayed flashing.
• Use the numeric keyboard to enter the required setting and confirm by .
• Return to weighing mode using
48 CXB-BA-e-1622
13.5 Pre-Tare setting - FnC 09
Under this menu item, Pre-Tare setting can be carried out. Two settings are possible:
00
Pre-Tare not possible when a load is on the weighing plate
01
Pre-Tare possible when a load is on the weighing plate
Procedure with setting „00“:
Ensure that there is no load on the weighing plate
Press , „Pre-Tare“ will be displayed flashing
Use the numeric keyboard to enter the Pre-Tare value, e.g. 1000 g
Confirm by , the Pre-Tare value will be displayed as a negative value.
Delete Pre-Tare value by
CXB-BA-e-1622 49
Procedure with setting „01“:
Leave the load on the weighing plate, such as: 2 kg
Enter the Pre-Tare value: for 1 kg enter „1“, „1.0“, „1.00“, „1.000“
Confirm by , the Pre-Tare value will be deducted from the load value.
Delete Pre-Tare value by
13.6 Audio signal during tolerance weighing - FnC 10
Under the menu item the audio signal can be set as follows:
00
Audio signal at
Weighing good above the tar get quantity / target weight
stable value
01
Audio signal at
Weighing good above the target quantity / target weight
instable value
50 CXB-BA-e-1622
14 Servicing, maintenance, di sposal
14.1 Cleaning
Before cleaning, please 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. Ensure that no liquid penetrates into the device
and wipe with a dry soft cloth.
Loose residue sample/powder can be removed carefully with a brush or manual
vacuum cleaner.
Spilled weighing goods m ust be removed immediately.
14.2 Servicing, maintenance
The appliance may only be opened by trained service technicians who are
authorized by KERN.
Before opening, disconnect from power supply.
14.3 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.
CXB-BA-e-1622 51
15 Instant help
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.
Fault Possible cause
The displayed weight does not glow.
• The balance is not switched on.
• The mains supply connection has been
interrupted (mains cable not plugged
in/faulty).
• Power supply interrupted.
• Batteries are inserted incorrectly or empty
• No batteries inserted.
The displayed weight is permanently
changing
• Draught/air movement
• Table/floor vibrations
• Weighing pan 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.
• Electromagnetic fields / static charging
(choose different location/switch off
interfering device if possible)
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
52 CXB-BA-e-1622
16 Decl a ration of Conformit y
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
The scope of delivery for verified weighing balances (= conformity-rated
weighing balances) includes a Declaration of Conformity.
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