ICS KEN FOB Series User manual

Operating manual
Stainless steel table scales
KERN FOB
Type FOB-S, FOB NS, FOB-NL, TFOB-NL-A, TFOB-LM-A, TFOB-A
Version 2.4
2021-01
GB
FOB-BA-e-2124

2 FOB-BA-e-2124
GB
KERN FOB
Version 2.42021-01
Operating manual
Stainless steel table scales
Contents
1Technical data ................................................................................................ 4
2Declaration of conformity ........................................................................... 10
3Appliance overview ..................................................................................... 11
3.1 Components ............................................................................................................................. 11
3.2 Keyboard overview ................................................................................................................... 13
3.3 Overview of display .................................................................................................................. 15
4Basic Information (General)........................................................................ 18
4.1 Proper use ................................................................................................................................ 18
4.2 Improper Use............................................................................................................................ 18
4.3 Warranty ................................................................................................................................... 18
4.4 Monitoring of Test Resources................................................................................................... 19
5Basic Safety Precautions ............................................................................ 19
5.1 Pay attention to the instructions in the Operation Manual........................................................ 19
5.2 Personnel training..................................................................................................................... 19
6Transport and storage................................................................................. 19
6.1 Testing upon acceptance ......................................................................................................... 19
6.2 Packaging / return transport ..................................................................................................... 19
7Unpacking, Setup and Commissioning ..................................................... 20
7.1 Installation Site, Location of Use .............................................................................................. 20
7.2 Unpacking................................................................................................................................. 20
7.2.1 Placing ...................................................................................................................................... 21
7.2.2 Levelling (FOB and FOB-LM models only)............................................................................... 21
7.2.3 Scope of delivery ...................................................................................................................... 21
7.3 Mains connection...................................................................................................................... 21
7.3.1 Assembly or disassembly of the protection hood ..................................................................... 22
7.4 Battery operation ...................................................................................................................... 23
7.5 Initial Commissioning................................................................................................................ 24
7.6 Adjustment................................................................................................................................ 24
8Verification (FOB-LM models only) ............................................................ 27
9Operation...................................................................................................... 28
9.1 Simple weighing ....................................................................................................................... 28
9.2 Taring........................................................................................................................................ 29
9.3 Switch-over weighing unit......................................................................................................... 29
9.4 Hold function (FOB, FOB-NL/-LM/ models only))..................................................................... 30
9.5 Display background illumination (FOB, FOB-NL/-LM/ models only) ........................................ 30
9.6 Weighing with tolerance range (FOB, FOB-LM models only) .................................................. 31
10 Menu ............................................................................................................. 34
10.1 Call up menu ............................................................................................................................ 34
10.2 Navigation in the menu............................................................................................................. 34
10.3 Exit menu / return to weighing mode........................................................................................ 34

FOB-BA-e-2124 3
10.4 Menu overview ......................................................................................................................... 35
10.4.1 Models FOB-S...................................................................................................................... 35
10.4.2 Models FOB-NS ................................................................................................................... 35
10.4.3 Models FOB-NL.................................................................................................................... 36
10.4.4 Models FOB-LM ................................................................................................................... 36
10.4.5 Models FOB ......................................................................................................................... 38
10.5 Menu settings ........................................................................................................................... 39
10.5.1 Setting weighing units .......................................................................................................... 39
10.5.2 Automatic switch-off function „AUTO OFF“ in stand-by mode............................................. 41
11 Error reports................................................................................................. 43
12 Servicing, maintenance, disposal .............................................................. 44
12.1 Cleaning.................................................................................................................................... 44
12.2 Servicing, maintenance ............................................................................................................ 44
12.3 Disposal.................................................................................................................................... 44
13 Instant help................................................................................................... 45

4 FOB-BA-e-2124
1 Technical data
KERN FOB-S, FOB-NS:
KERN FOB 500-1S FOB 5K1S
Readability (d) 0.1 g 1 g
Weighing range (max) 500 g 5000 g
Reproducibility 0.1g 1 g
Linearity ± 0.2 g ± 2 g
Weighing Units g, lb, oz, dwt, ozt
Recommended adjustment
weight, not added (class) 500 g (M1) 5000 g (M1)
Warm-up time 10 min
Stabilization time (typical) 2 sec.
Operating temperature + 10° C .... + 40° C
Humidity of air 25% - 95% (non-condensing)
Housing stainless steel
(B x D x H) mm 170 x 150 x 40
Weighing plate, stainless steel
(mm) 120 x 150
Weight kg (net) 650 g
Auto off 2 min
Battery 9 V block
Service life 20 h
Input voltage Appliance 9 V / 100 mA
Input voltage Mains adapter 230 V / 50 Hz

FOB-BA-e-2124 5
KERN FOB 0.5K-4NS FOB 5K-3NS
Readability (d) 0.1 g 1 g
Weighing range (max) 500 g 5000 g
Reproducibility 0.1g 1 g
Linearity ± 0.2 g ± 2 g
Weighing Units g, lb
Recommended adjustment
weight, not added (class) 500 g (M1) 5000 g (M1)
Warm-up time 10 min
Stabilization time (typical) 2 sec.
Operating temperature + 10° C .... + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing stainless steel
(B x D x H) mm 170 x 150 x 40
Weighing plate, stainless steel
(mm)
120 x 150 x 10
Weight kg (net) 650 g
Auto off Options: 2, 3, 4, 5, min; off
Battery 9 V block
Service life 24 h
Input voltage Appliance 9 V / 100 mA
Input voltage Mains adapter 230 V / 50 Hz
IP protection IP65

6 FOB-BA-e-2124
FOB-NL:
KERN FOB 3K-4NL FOB 7K-4NL
Item no./ Type TFOB 3K-4NL-A
Readability (d) 0,2 g 0.5 g / 1 g
Weighing range (max) 3 kg 5 kg / 7.5 kg
Reproducibility 0.5 g / 1 g 0.5 g / 1 g
Linearity ± 0.6 g ± 1.5 g / 3 g
Recommended adjustment
weight, not added (class) 3 kg (M1) 5 kg (M1)
Warm-up time 30 min 30 min
Weighing Units g, lb, oz g, lb, oz, ozt, dwt
Stabilization time (typical) 2 sec.
Operating temperature + 5° C …. + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing stainless steel
(B x D x H) mm 285 x 255 x 90
Weighing plate, stainless steel
(mm)
252 x 200 x 14
Weight kg (net) 3.8 kg
Auto off 2 min
Battery 4 x 1.5 V AA
Service life background illumination ON: 48 h
Service life background illumination OFF: 66 h
Input voltage Appliance 12 V / 500 mA
Input voltage Mains adapter 230 V / 50 Hz
IP protection IP67

FOB-BA-e-2124 7
KERN FOB 10K-3NL FOB 30K-3NL
Readability (d) 1 g / 2 g 2 g / 5 g
Weighing range (max) 8 kg / 15 kg 16 kg / 30 kg
Reproducibility 1 g / 2 g 2 g / 5 g
Linearity ± 3 g / 6 g ± 6 g / 15 g
Recommended adjustment
weight, not added (class) 10 kg (M1) 30 kg (M1)
Warm-up time 30 min 30 min
Weighing Units g, lb, oz, ozt, dwt
Stabilization time (typical) 2 sec.
Operating temperature + 5° C …. + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing stainless steel
(B x D x H) mm 285 x 255 x 90
Weighing plate, stainless steel
(mm)
252 x 200 x 14
Weight kg (net) 3.8 kg
Auto off 2 min
Battery 4 x 1.5 V AA
Battery 4 x 1.5 V AA
Service life background illumination ON: 48 h
Service life background illumination OFF: 66 h
Input voltage Appliance 12 V / 500 mA
Input voltage Mains adapter 230 V / 50 Hz
IP protection IP67

8 FOB-BA-e-2124
KERN FOB-LM:
KERN FOB 1K-4LM FOB 3K-3LM
Item no./ Type TFOB 1K-4LM-A TFOB 3K-3LM-A
Readability (d) 0.5 g 1 g
Weighing range (max) 1.5 kg 3 kg
Verification value (e) 0.5 g 1 g
Verification class III III
Minimum weight (min) 10 g 20 g
Reproducibility 0.5 g 1 g
Linearity ± 1.5 g ± 2 g
Recommended adjustment
weight, not added (class) 1 kg (M1) 2 kg (M1)
Range for zero point adjustment
(A/D converter value) 3000 - 120000 3000 - 120000
Range for adjustment with
calibration weight (A/D converter
value)
30000 – 50000 40000 – 65000
Warm-up time 10 min 10 min
Weighing unit g
Stabilization time (typical) 2 sec.
Operating temperature + 5° C …. + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing (B x D x H) mm 285 x 255 x 90
Weighing plate, stainless steel
(mm)
252 x 200 x 14
Weight kg (net) 3.8 kg
Auto off 2 min
Battery 4 x 1.5 V AA
Service life background illumination ON: 48 h
Service life background illumination OFF: 66 h
Input voltage Appliance 12 V / 500 mA
Input voltage Mains adapter 230 V / 50 Hz
IP protection IP67

FOB-BA-e-2124 9
KERN FOB 6K-3LM FOB 10K-3LM
Item no./ Type TFOB 6K-3LM -A TFOB 10K-3LM-A
Readability (d) 2 g 5 g
Weighing range (max) 6 kg 15 kg
Verification value (e) 2 g 5 g
Verification class III III
Minimum weight (min) 40 g 100 g
Reproducibility 2 g 5 g
Linearity ± 4 g ± 10 g
Recommended adjustment
weight, not added (class) 5 kg (M1) 10 kg (M1)
Range for zero point adjustment
(A/D converter value) 3000 - 120000 3000 - 10000
Range for adjustment with
calibration weight (A/D converter
value)
55000 – 80000 55000 – 80000
Warm-up time 10 min 10 min
Weighing unit g
Stabilization time (typical) 2 sec.
Operating temperature + 5° C …. + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing (B x D x H) mm 285 x 255 x 90
Weighing plate, stainless steel
(mm)
252 x 200 x 14
Weight kg (net) 3.8 kg
Auto off 2 min
Battery 4 x 1.5 V AA
Service life background illumination ON: 48 h
Service life background illumination OFF: 66 h
Input voltage Appliance 12 V / 500 mA
Input voltage Mains adapter 230 V / 50 Hz
IP protection IP67

10 FOB-BA-e-2124
KERN FOB:
KERN FOB 1.5K0.5 FOB 3K1 FOB 6K2
Item no./ Type TFOB 1K-4-A TFOB 3K-3-A TFOB 6K-3-A
Readability (d) 0.5 g 1 g 2 g
Weighing range (max) 1.5 kg 3 kg 6 kg
Reproducibility 0.5 g 1 g 2 g
Linearity 1.5 g 3 g 6 g
Recommended adjustment
weight, not added (class) 1.5 kg (M1) 3 kg (M1) 6 kg (M1)
Warm-up time 10 min
Weighing Units g, lb, oz
Stabilization time (typical) 2 sec.
Operating temperature + 5° C …. + 35° C
Humidity of air 25% - 95% (non-condensing)
Housing (B x D x H) mm 235 x 175 x 62
Weighing plate, stainless steel
(mm)
175 x 165 x 7
Weight kg (net) 1.8 kg
Auto off 2 min
Rechargeable battery Standard
Input voltage Appliance 12 V / 500 mA
Input voltage Mains adapter 100V - 240 V, 50 Hz
2 Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce

FOB-BA-e-2124 11
3 Appliance overview
3.1 Components
KERN FOB-S:
KERN FOB-NS:
KERN FOB-NL:

12 FOB-BA-e-2124
KERN FOB-LM:
KERN FOB:
Pos.
Description
1 Weighing pan
2 Keyboard
3 Display
4 Rechargeable battery charge display
5 Levelling screw
6 Bubble level (below weighing pan)

FOB-BA-e-2124 13
3.2 Keyboard overview
Button Description Description
ON/OFF-button •Turn on/off
TARE-key
•Taring
•Zeroing
•Taring
•Zeroing
•Switching the display background illumination
on/off (long key press)
•Taring
•Zeroing
•Switching the display background illumination
on/off (long key press)
UNIT-button •Switch-over weighing unit
HOLD button
•Call up hold function
•Calling up tolerance weighing (FOB models only)
Models FOB-S:

14 FOB-BA-e-2124
Models FOB-NS:
Models FOB-NL:
Models FOB-LM:

FOB-BA-e-2124 15
Models FOB:
3.3 Overview of display
Models FOB-S / FOB-NS:
Models FOB-NL:
Display Description
g, lb, oz, ozt, dwt Weighing units
Stability display
Display Description
g, lb, oz, ozt, dwt Weighing Units
Stability display
HOLD Display hold function
NET Display net weight

16 FOB-BA-e-2124
Models FOB-LM:
The next to the icon is displayed when:
HOLD the data-hold function is active
NET the weight value is a net weight value
the balance is in tolerance weighing mode
Display Description
gWeighing unit
Stability display
Zero display
Battery charge display
When the display shows that the battery capacity
is exhausted, the balance will automatically switch off after
30 seconds.
LED lights up when the power adapter is connected

FOB-BA-e-2124 17
Models FOB:
The next to the icon is displayed when:
HOLD the data-hold function is active
NET the weight value is a net weight value
the balance is in tolerance weighing mode
Display Description
gWeighing unit
Stability display
Zero display
Rechargeable battery charge display
Rechargeable battery charge display
•LED lights green when the rechargeable battery is fully
charged
•LED flashes green when rechargeable battery is being
charged

18 FOB-BA-e-2124
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 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. 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 and damage caused by media, liquids,
Natural wear and tear
•The appliance is improperly set up or incorrectly electrically connected
•The measuring system is overloaded

FOB-BA-e-2124 19
4.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
Information is available on KERN’s home page (www.kern-sohn.com with regard to
the monitoring of balance test substances and the test weights required for this. In
KERN's accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
5 Basic Safety Precautions
5.1 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
6.2 Packaging / return transport
Keep all parts of the original packaging for a possibly required
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile
parts.
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.

20 FOB-BA-e-2124
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.
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.
7.2 Unpacking
Carefully remove the weighing balance from the packaging and install it at the
designated work place.