19.5.3 Resetting to zero when switched on (function "CFn 04“) .......................................... 106
19.5.4 Amend the DATA Hold function of verified weighing system (function „CFn 05“) .... 107
19.5.5 Auto zero (verified weighing systems)/ function "CFn 0 6“ ........................................ 109
4 KXS/KXG-TM-BA_IA-e-1420
1 Technical data
KERN KXS-TM KXG-TM
Display 6-digit
Single (Max.) 10,000 e
Solution verifiable
Dual (Max.) 5,000 e
Resolution non-verifiable 30,000 d
Verification class III
Weighing ranges Max. 2
Weighing Units g, kg
Divisions 1,2,5,…10, n
Display LCD 55 mm digits with back lighting
DMS weighing cells
Electric Supply
Rechargeable battery
optional
Factory option
Admissible
ambient temperature
Humidity of air < 85 % relative (not condensing)
Net weight 2500 g 2000 g
Dimensions Width x Depth
x Height,
(mm)
Interfaces
Factory option
Operating time (backlight on) 40 h
Operating time (backlight off) 80 h
Max. 8 x 350 Ω
Input voltage 110-230 V AC
Built-in power supply unit
6 V, 4.5 Ah
Loading time 12 h
-10°C – 40°C
232 x 170 x 80
RS232: KXS-A04
RS485: KXS-A01
Bluetooth: KXS-A02
Protection type IP 68 according to DIN 60529
KXS/KXG-TM-BA_IA-e-1420 5
2 Appliance overview
1
Wireless
2
Status of rechargeable battery
3
Wall bracket
4
Locking screw
5
Display
6
Keyboard
7
Electric Supply
8
RS 232 / RS485 (Factory option)
9
Connection to the load cell
6 KXS/KXG-TM-BA_IA-e-1420
2.1 Keyboard overview
2.1.1 Models KXS-TM:
Button Description Function
ON/OFF button
F-key
BG/ NET key
UNIT-key
TARE button
ZERO key
1. Turn on/off
• Functional button (allocation see chap. 10.1
FNC-03)
• Gross weight switch over to net weight
• Weighing unit
• Taring
• Confirm entry
• Zeroing
• Functional button (allocation see chap. 10.1
M+/ PRINT key
KXS/KXG-TM-BA_IA-e-1420 7
FNC-02)
2.1.1.1 Navigation keysand their function in the menu
• Increase flashing digit
2.1.2 Models KXG-TM:
• Scroll forward in menu
• Decrease flashing digit
• Scroll backwards in menu
• Digit selection to the right
• Take over selected setting
Digit selection to the left
Button Description Function
ON/OFF button
F-key
8 KXS/KXG-TM-BA_IA-e-1420
• Turn on/off
• Functional button (allocation see chap. 10.1
FNC-03)
BG/ NET key
• Gross weight switch over to net weight
UNIT-key
TARE button
ZERO key
M+/ PRINT key
2.1.2.1 Navigation keysand their function in the menu
• Increase flashing digit
• Scroll forward in menu
• Weighing unit
• Taring
• Confirm entry
• Zeroing
• Functional button (allocation see chap. 10.1
FNC-02)
• Decrease flashing digit
• Scroll backwards in menu
• Digit selection to the right
• Take over selected setting
Digit selection to the left
KXS/KXG-TM-BA_IA-e-1420 9
2.2 Overview of display
HI / OK / LO Indicators for weighing with tolerance range
Kg Current selected unit of weight „kilograms“
Lb Current selected unit of weight „pound“
Pcs Indicator for counting
Zero indicator
Net The displayed weighing value is a net weighing value
Status of rechargeable battery
10 KXS/KXG-TM-BA_IA-e-1420
Non verified weighing systems:
3
4
5
7
2
3
6
7
Indicator [] next to symbol displays:
1
that the weight value is stable
GROSS
2
that the displayed weighing value is a gross weight value
that the balance is set to unit counting mode
PRE-
TARE
HOLD
M+
that a PRE-TARE value is stored
that the indicated weight value is held in the display, until it is
deleted.
6
that data are stored in an accumulative memory
T hat the current selected unit of weight is „oz“.
Verified weighing systems:
Indicator [] next to symbol displays:
1
that the weight value is stable
GROSS
that the displayed weighing value is a gross weight value
that the balance is set to unit counting mode
PRE-
TARE
4
that a PRE-TARE value is stored
5
Display of the current weighing range of the connected
platform
M+
that data are stored in an accumulative memory
KXS/KXG-TM-BA_IA-e-1420 11
3 Basic Information (General)
3.1 Proper use
The display unit acquired by you is used in combination with a load cell and serves to
determine the weighing value of material to be weighed. It is intended to be used as
a “non-automatic weighing system”, i.e. the material to be weighed is manually and
carefully placed in the centre of the weighing plate. As soon as a stable weighing
value is reached the weighing value can be read.
3.2 Improper Use
Do not use weighing system for dynamic weighing. In the event that small quantities
are removed or added to the material to be weighed, incorrect weighing results can
be displayed due to the “stability compensation“ in the display unit. (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 weighing
plate, minus a possibly existing tare load, must be strictly avoided. Both, the w ei g hi ng
plate and the display unit may be damaged during this process.
Never operate display unit in explosive environment. The serial version is not
explosion protected.
Changes to the display unit's design are not permitted. This may lead to incorrect
weighing results, safety-related faul ts and des tr uct ion of the display unit.
The display unit may only be operated in accordance with the described default
settings. Other areas of use must be released by KERN in writing.
3.3 Warranty
Warranty claims shall be voided in case
• Our conditions in the operation manual are ignored
• The appliance is used outside the described uses
• The appliance is modified or opened
• Mechanical damage or damage by media, liquids, natural wear and tear
• The appliance is improperly set up or incorrectly electrically connected
• The measuring system is overloaded
12 KXS/KXG-TM-BA_IA-e-1420
3.4 Monitoring of Test Resources
Keep all parts of the original packaging for a possibly required
and remove loose/mobile
Secure all parts such as the glass wind screen, the weighing
In the framework of quality assurance the measuring-related properties of the display
unit and, if applicable, the testing weight, must be checked regularly. The responsible
user must define a suitable interval as well as type and scope of this test. Information
is available on KERN’s home page (www.kern-sohn.comwith regard to the
monitoring of display units’ test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and display units may be
calibrated (return to the national standard) fast and at moderate cost.
4 Basic Safety Precautions
4.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
All language versions contain a non-binding translation.
The original German is binding.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 T ransport and storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 Packaging / return transport
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables
parts.
Reattach possibly supplied transport securing devices.
platform, power unit etc. against shifting and damage.
KXS/KXG-TM-BA_IA-e-1420 13
6 Unpacking and placing
• For display unit, see chapter 2
6.1 Installation Site, Location of Use
The display units are designed in a way that reliable weighing results are achieved in
common conditions of use.
Precise and fast work is achieved by selecting the right place for your display unit
and your weighing plate.
On the installati on site obs erve the following:
• Place the weighing system 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 display unit and the weighing plate against direct dra ft fr om ope n
windows or doors.
• Avoid jarring during weighing;
• Protect the display unit and the weighing plate against high humidity, vapours
and dust.
• Do not expose the display unit to extreme dampness for longer periods of
time. Non-permitted condensation (condensation of air humidity on the
appliance) may occur if a cold appliance is taken to a considerably warmer
environment. In this case, acclimatize the disconnected appliance for ca. 2
hours at room temperature.
• Avoid static charge of goods to be weighed or weighing container.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or remove
source of interference.
6.2 Unpacking and placing
Take the display unit carefully out of its packaging, remove the plastic jacket and
install it at the designated work space. Mount the displ ay unit in a way that facilitates
operation and where it is easy to see.
6.3 Scope of delivery / serial accessories:
• Plug for connection to load cell
• Operating manual
14 KXS/KXG-TM-BA_IA-e-1420
6.4 Transport Securing
Remove the transportation safety device at the four marked positions:
Transport Securing
6.5 Placing
Mount the display unit in a way that facilitates operation and where it is easy to see.
In order to raise the display, the display device can be mounted on an
optional stand.
6.6 Mains connection
Power is supplied via the external power supply unit.
Insert the mains plug into the wall socket.
Once connected, the instrument performs a self check. If the zero display
shows the device is ready for use.
Charge the battery for at least 12 hours before initial use.
The battery symbol indicates the current charge level of the batteries. If the symbol
flashes, the capacity of the battery will soon be exhausted. The weighing scale
will remain ready for operation for a few more hours before switching off in order to
save battery. Fully charge the battery pack.
KXS/KXG-TM-BA_IA-e-1420 15
6.8 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each display unit with connected weighing plate must be coordinated - in compliance
with the underlying physical weighing principle - to the existing acceleration due to
gravity at its place of location (only if the weighing system has not already been
adjusted to the location in the factory). This adjustment process must be carried out
for the first commissioning, after each change of location as well as in case of
fluctuating environment temperature. To receive accurate measuring values it is also
recommended to adjust the display unit periodically in weighing operation.
How to carry out adjustment:
Unverified weighing systems, see chapter 11
Verified weighing systems, see chapter 19.3
6.9 Verification
General introduction:
According to EU directive 90/384/EEC or 2009/23EG balances must be officially
verified if they are used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purposes
d) For manufacturing final packages
In cases of doubt, please contact your local trade in standard.
Verification notes:
An EU type approval exists for the appliance described in its technical data as
verifiable. If the appliance is used where obligation to verify exists as described
above, it must be verified and re-verified at regular intervals.
Re-verification of an appliance is carried out according to the respective national
regulations. Normally the validity for verification in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
Verification of the device is invalid without the seals.
The seal marks / verification wire attached on verified appliances p oi nt out
that the appliance may only be opened and serviced by trained and
authorised specialist staff. If the sealing (paper seal/ verification wire) is
damaged, the verification validity expires. Please observe all national laws
and legal regulations. In Germany a re-verification will be necessary.
16 KXS/KXG-TM-BA_IA-e-1420
Sealing:
KXS/KXG-TM-BA_IA-e-1420 17
7 Basic Operation
7.1 Start-up
Press on/ off key, the equipment completes a self check. As soon as the weight
display appears, the instrument will be ready to weigh.
7.2 Switching Off
Press the on/ off key approx. 3 seconds, the display will turn off.
7.3 Zeroing
Resetting to zero corrects the influence of light soiling on the weighing plate.
Manual
To unload the weighing system
Press the ZERO button, the zero display and the indicator will appear.
Automatic
The automatic zero tracking menu, can be switched on or off, function "FNC 13"
see chapter 10.10.
When the balance is cleared the zero point is corrected automatically.
7.4 Simple weighing
Place goods to be weighed on balance.
Wait until the indicator over the stability display appears.
Read weighing result.
18 KXS/KXG-TM-BA_IA-e-1420
7.5 Switch-over weighing unit
Press the UNIT-key
The weight gauge changes between „kg“and "g".
7.6 Weighing with tare
After taring no numeric input of a tare weight can follow.
7.6.1 Taring
Deposit weighing vessel. Wait for stability display, then press the TARE button
Zero display and indicator net appear.
The weight of the container is now internally saved.
Weigh the material, the net weight will be indicated.
After removing the weighing container, the weight of the weighing container
appears as negative display.
The taring process can be repeated any number of times, e.g. when adding
several components for a mixture (adding). The limit is reached when the whole
weighing range is exhausted.
With the BG/ NET key you can switch between gross weight and net weight, see
chapter 7.7.
After the numeric input of a tare weight, the system can only be tared if
„tare weight > PRE TARE value“
7.6.2 Delete tare
Unload balance and press the TARE key.
The NET indicator turns off, the zero display shows.
KXS/KXG-TM-BA_IA-e-1420 19
7.6.3 Numerical input of tare (PRE-TARE)
The known dead weight of a weighing container can be tared off by entering its
weight as pre-tare deduction in order to ensure the net weight of the goods to be
weighed in subsequent weighings is always displayed.
Press the TARE- key, the active position flashes.
Enter the known tare weight, e.g. 2 kg and acknowledge with TARE button.
Numerical input, see chap. 2.1.1.
The entered weight will be stored as tare weight and displayed with negative
sign. The indicator over PRE-TARE will appear.
Put the filled weighing container on the balance, the net weight will be displayed.
The tare value remains stored until it is deleted with the TARE key.
7.7 Gross/Net call-up
By repeated pressing of the BG/ NET key you can change between the gross and net
indicator values.
At the indicator „gross weight“the indi c ator a ppe ar s above LARGE.
In the „Net weight“ display the indicator appears next to NET.
20 KXS/KXG-TM-BA_IA-e-1420
8 Applications:
8.1 Parts counting
Before the balance can count parts, it must know the average part weight (i.e.
reference). Proceed by putting on a certain number of the parts to be counted. The
balance determines the total weight and divides it by the number of parts, the socalled reference quantity. Counting is then carried out on the basis of the calculated
average piece weight.
As a rule:
The higher the reference quantity the higher the counting exactness.
Determine the unit weight and count
1. In the weighing mode press the unit key, in order to activate the counting
function. The indicator Pcs is indicated.
2. Press the BG/NET-key repeatedly until the desired reference number of items
(e.g. 100) appears, select between C 10, C 20, C 50, C100, C 200.
3. Place as many items to be counted (such as 10 items) as demanded by the
set reference quantity and confirm by UNIT key. The weighing scales calculate
the reference weight. The current number of items (e.g. 10 pieces) is
indicated.
4. Remove reference weight. The balance is from now in parts counting mode
counting all units on the weighing plate.
KXS/KXG-TM-BA_IA-e-1420 21
Switch between number of items and weight
With the UNIT key you can switch between number of items and weight:
By switching the scale off and then on again the scale starts in the unit
counting mode. The current reference weight remains stored until the
reference is set again or the power supply is interrupted.
The counting function is not active, if the weight is under 20d or if below
the minimum piece weight (< 0.2 D) is reached.
Automatic reference o pt i miz at ion
In order to improve the counting exactness, the referenc e can be opt imised by
adding more pieces. 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.
If the number of placed parts are 5 pieces more than the reference, then the
automatic reference optimisation starts. The reference weight is calculated anew.
22 KXS/KXG-TM-BA_IA-e-1420
8.2 Totalization
F_M 10 (M+ accumulating mode 1):
F_M 11 (M+ accumulating mode 2):
Printout example (KERN YKB-01N)
Printout example (KERN YKB-01N)
2. Weighing
2. Weighing
Output
Output
Required settings in the menu:
1. Function „rSi 04“: Setting „M_Pl u s“, see chapter 12.4
2. Function „rSi 03“, setting F_M 10 or F_M11 (sample print-out see
following overview , see chapter 12.3.
Total = sum of net weight of each weight
reading
1. Weighing
Total = Sum of gross weight of each weight
reading
1. Weighing
The totalizing function is not active when the weight is under 20d.
KXS/KXG-TM-BA_IA-e-1420 23
Accumulation
memory
Sum of net weight of
each weight reading
Accumulation memory
Gross weight of each
weight reading
Add up:
Place weighing good A, e.g. 5 kg.
Wait for stability, then press M + / PRINT key. . The weight is added to the
accumulative memory and printed if an optional printer is connected. The number
of weighings, followed by the total weight will be indicated. The indicator above
M+ shows.
Remove the weighed good. More weighed goods can only be added when the
display ≤ zero.
24 KXS/KXG-TM-BA_IA-e-1420
Place goods to be weighed, e.g. 7 kg.
Wait for stability then press the M+/PRINT, it calculates. The weight value is
added to the accumulative memory and given out when connecting an optional
printer. Number of weighings, followed by the total weight will be displayed for 2
sec. Then the current weight value appears, the indicator above M + appears.
Add more weighed goods as described before. Please note that the weighing
system must be unloaded between the individual weighing procedures.
You can repeat this process until the capacity of the weighing system is
exhausted.
KXS/KXG-TM-BA_IA-e-1420 25
Display and output sum „Total“:
When the scale is unloaded (zero indicator) press the M+/PRINT key, the number
of weight readings followed by the total weight are indicated for 2 seconds. Press
M+/PRINT to print out this display.
Delete accumulative memory:
1. With M+/PRINT :
At the display “Number of weighings” press M+/PRINT key again. The data in the
accumulative memory are deleted. The indicator above M+ turns off.
2. With F
in the menu use the function "FnC 12" in setting "MC" to allocate the F-key with
the function "Delete accumulative memory”, see chapter 10.9
When the scale is unloaded (zero indicator) press the F-key, the data in the
accumulative memory are deleted. The indicator above M+ turns off.
26 KXS/KXG-TM-BA_IA-e-1420
9 Menu
The menu consists of the following blocks:
Access to menu: In the weighing mode press the BG/NET and ZERO key simultaneously, "01 FnC"
is indicated.
Settings of the display device
External adjustment
Settings of the interface
Exit menu / back to weighing mode.
KXS/KXG-TM-BA_IA-e-1420 27
10 Indicat or s e t ti ngs (me nu block "01 FnC")
Press TARE key
Access to menu: In the weighing mode press BG/ NET and ZERO key simultaneously "01 FnC" is
indicated, see chapter 9.
Keys and their function in the menu:
/
/
/
/
Call up the navigation in the menu/ function:
• Increase flashing digit
• Scroll forward in menu
• Decrease flashing digit
• Scroll backwards in menu
Digit selection to the right
Digit selection to the left
With navigation keys
Select function, (FNC
00 FNC 13)
Back to menu:
Select function FNC
00 and confirm with
TARE key.
28 KXS/KXG-TM-BA_IA-e-1420
Exit menu / back to weighing mode:
Leave the example function "FnC 01"
Select with the navigation keys "FNC 00” and confirm with TARE key.
KXS/KXG-TM-BA_IA-e-1420 29
Overview:
FnC 00 Exit menu
FnC 01 Display background illumination
FnC 02 Automatic power switch-off
FnC 03 Weighing with tolerance range / set limit values
FnC 04 Reset to default setting
FnC 05 Automatic zero tracking / stability and response settings
FnC 06 Data-Hold function
FnC 07 Automatic reference optimization with counting of items
FnC 08 Not documented
FnC 09 Not documented
FnC 10 Automatic saving of zero point (not available in the case of
weighing systems with type approval).
FnC 11 Not documented
FnC 12 Function of the F-key
FnC 13 Auto-Zero function
(not available with balancing systems with approved design)
30 KXS/KXG-TM-BA_IA-e-1420
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