KERN&SOHN MBE-BA-e-1820 User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Baby scale
KERN MBE
Version 2.0
2018-01
GB
MBE-BA-e-1820
Importør:
Impex Produkter AS
Gamle Drammensvei 107
1363 Høvik
www.impex.no
[email protected]
Tel.: [phone]

MBE-BA-e-1820
2
GB
KERN MBE 20K10
Version 1.205/2016
Operating instructions Baby scale
Contents
1Technical data ................................................................................................... 3
2Declaration of conformity................................................................................. 4
3Basic directions (general information)............................................................ 4
3.1 Intended use............................................................................................................. 4
3.2 Inappropriate use..................................................................................................... 4
3.3 Guarantee................................................................................................................. 5
3.4 Monitoring the test substances.............................................................................. 5
4Basic safety directions ..................................................................................... 5
4.1 Observing the directions included in the Operating Instructions........................ 5
4.2 Staff training............................................................................................................. 5
5Transport and storage ...................................................................................... 6
5.1 Check upon delivery................................................................................................ 6
5.2 Packaging................................................................................................................. 6
6Unpacking, installation and starting................................................................ 6
6.1 Place of installation, place of use........................................................................... 6
6.2 Unpacking ................................................................................................................ 7
6.2.1 Scale positioning................................................................................................................ 7
6.2.2 List of items delivered........................................................................................................ 7
6.3 Battery operation (inserting and removing batteries)........................................... 7
6.4 Initial start-up........................................................................................................... 7
6.5 Adjustment............................................................................................................... 8
6.5.1 Procedure when adjusting................................................................................................. 8
6.6 Changing weight unit .............................................................................................. 8
7Operation ........................................................................................................... 9
7.1 Display...................................................................................................................... 9
7.2 Handling................................................................................................................... 9
8Using the scale.................................................................................................. 9
9Error messages ............................................................................................... 10
10 Service, maintenance, disposal.................................................................. 10
10.1 Cleaning ..................................................................................................................10
10.2 Service, maintenance.............................................................................................10
10.3 Disposal...................................................................................................................10
11 Troubleshooting........................................................................................... 11

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3
1 Technical data
KERN MBE 20K10
Read-out (d) 10 g / ¼ oz
Weighing range (max.) 20 kg / 44 lbs
Reproducibility 20 g
Linearity 20 g
Weight units kg/lb
Recommended calibra-
tion weight, (class) 20 kg (M3)
Signal rise time (typical)
2 - 3 s
Warm-up time 10 min
Operating temperature + 5°C …. + 35°C
Power supply Operation with 4 x 1.5 V battery supply, AA type batteries
Operation time 200 h
Auto-Off function After 2 min without load change
Air humidity max. 80% (non-condensing)
Scale ready for weighing
(W x D x H) mm
560 x 350 x 88 mm
Scale plate mm 480 x 270 mm
Total weight kg (net) 2.0 kg

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2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
3 Basic directions (general information)
3.1 Intended use
The scale is used to determine weight of babies in lying positions and intended for
private use only. The use of this scale in health service is forbidden.
To carry out weighing, lay down a child on the scale plate. The weighing value can
be read off after a stable weighing value has been obtained.
Before any use, the scale must be checked for correct condition by the authorised
person.
Additional information on the baby scale:
Baby scales are intended for weighing babies in lying positions. If a baby is to be
weighed in a sitting position, it is to be seated in the centre of the scale pan.
To avoid falls, babies that are on the scale pan should be under continu-
ous observation. Follow the direction placed on the scale pan!
3.2 Inappropriate use
Do not use the scale for dynamic weighing. In the event that small quantities are re-
moved or added to the material to be weighed, incorrect weighing results can be dis-
played due to the “stability compensation“ in the scale!
(Example: Slowly draining fluids from a container on the scale.)
Do not leave a permanent load on the weighing plate. This can damage the measur-
ing equipment.

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Be sure to avoid impact shock and overloading the scale in excess of the prescribed
maximum load rating (max.), minus any possible tare weight that is already present.
This could cause damage to the scale.
Never operate the balance in hazardous locations. The series design is not explo-
sion-proof.
Construction alterations may not be made to the scale. This can lead to incorrect
weighing results, faults concerning safety regulations as well as to destruction of the
scale.
The scale may only be used in compliance with the described guidelines. Other are-
as of application/planned use must be approved by KERN in writing.
3.3 Guarantee
The guarantee shall become void in the event of the following:
non-observation of our guidelines in the Operating Instructions,
use outside the described applications,
alteration to or opening of the device,
mechanical damage or damage caused by media, liquids,
usual wear and tear,
inappropriate erection or electric installation,
overloading of the measuring equipment,
allowing the scale to fall down.
3.4 Monitoring the test substances
The metrology features of the balance and any possible available adjusting weight
must be checked at regular intervals within the scope of quality assurance. For this
purpose, the responsible user must define a suitable interval as well as the nature
and scope of this check. 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. Test weights and balances can be adjusted quickly and at a
reasonable price at KERN’s accredited DKD (Deutsche Kalibrierdienst) calibration
laboratory (return to national standard).
In the case of the scales for weighing people provided with the scale to determine a
body size, it is recommended to carry out the check of its measuring accuracy be-
cause determination of the human body size is always connected with a very large
inaccuracy.
4 Basic safety directions
4.1 Observing the directions included in the Operating Instructions
Please read these Operating Instructions carefully before erecting and commission-
ing the balance, even if you already have experience with KERN balances.
4.2 Staff training
The device may only be operated and maintained by trained members of staff.

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5 Transport and storage
5.1 Check upon delivery
Please check the packaging immediately upon delivery and the device during un-
packing for any visible signs of external damage.
5.2 Packaging
Please keep all parts of the original packaging in case it should be necessary to return
items at any time.
Only the original packaging should be used for return shipments.
Before any shipment, disconnect all cables and loose/movable parts.
Install transport protection elements (if any). All parts such as weighing plate, mains
adapter, stand, operating panel etc. must be protected against sliding down or dam-
age.
6 Unpacking, installation and starting
6.1 Place of installation, place of use
The scale is designed in such a way that reliable weighing results can be achieved
under normal application conditions.
By selecting the correct location for your scale, you will be able to work quickly and
precisely.
Therefore, please observe the following when choosing a place of installation:
Place the scale on a firm, level surface;
Avoid extreme heat as well as temperature fluctuation caused by installing the
scale next to a radiator or in the direct sunlight;
Protect the scale against direct draughts due to open windows and doors;
Avoid shaking during weighing;
Protect the scale against high humidity, vapours and dust;
Do not expose the device to extreme dampness for longer periods of time. In-
admissible bedewing (condensation of air moisture on the device) can occur if
a cold device is taken into a significantly warmer environment. In this case,
please keep the device for approx. 2 hours at room temperature after it has
been disconnected from mains supply;
Avoid static charge build-up on the scale and people to be weighed;
Avoid contact with water.
Major display deviations (incorrect weighing results) are possible if electromagnetic
fields occur as well as due to static charging and instable power supply. It is neces-
sary then to change the scale location.

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6.2 Unpacking
Carefully remove individual scale parts or the whole scale from its packaging and po-
sition the scale in its intended working location. When the mains adapter is used, be
careful not to cause the danger of falling over the power cable.
6.2.1 Scale positioning
Pay attention that the scale plate is precisely levelled.
6.2.2 List of items delivered
Standard accessories:
•Operating Instructions
•Batteries (4 x AA 1.5 V)
6.3 Battery operation (inserting and removing batteries)
The battery compartment is located in the scale bottom.
Turn the scale and remove the battery compartment cover. Insert batteries according
to polarity (pay attention to the marking in the battery compartment bottom).
Close the battery compartment and turn the scale again.
When the batteries are exhausted, the display will show the „LO” symbol and batter-
ies must be changed.
When the scale is not in use for a longer period of time, remove the batteries and
keep them separately. Leakage of battery liquid might damage the scale.
6.4 Initial start-up
To achieve accurate weighing results with the electronic balances, the appropriate
operating temperature must be provided for them (refer to „Warm-up time”, chapter
1). During the warm-up time, the scale must be switched on.
The accuracy of the scale depends on the local acceleration of the fall.
Please be sure to observe the information included in the chapter on „Adjustment”.

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6.5 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 during the initial start-up, after change in lo-
cation and variation of surrounding temperature. It is also recommended to adjust the
balance periodically during weighing operation in order to obtain exact measured val-
ues.
With the built-in calibration weight (refer to the chapter on „Technical data”) it is
possible to check and set the scale accuracy at any time.
6.5.1 Procedure when adjusting
Observe stable environmental conditions. The warm-up time (refer to the chapter on
„Technical data”) is required to ensure the scale stabilisation.
To adjust this baby scale when the scale plate is unloaded and the scale is switched
off, press and hold the ON/OFF key for 5 seconds until the display shows the
„CAL0” symbol.
Release the ON/OFF key, and the „20.00 kg” display will be shown for a moment.
Then place the calibration weight of 20 kg carefully in the centre of the scale plate
and the adjustment process will be started automatically.
When the adjustment is finished successfully, the display will show the „F” symbol
for a moment and then the scale will be switched off automatically.
When an error occurs during the adjusting process e.g. because of incorrect weight
value, the display will show the „E” symbol for a few seconds and then the scale will
be switched off automatically. As a result of that the scale is not adjusted.
6.6 Changing weight unit
At the back of the scale (next to the battery compartment) there is the small slide
switch which you can use to change weight units between kg and lb.
When a change is carried out, the display will show the present active weight unit (kg
or lb:oz)

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7 Operation
7.1 Display
7.2 Handling
The scale is provided with only one key (ON/OFF).
The purpose of this key is to switch on the scale, and switch it off by longer holding
the pressed key when the scale is switched on.
Height of digits on the 4-position LCD display is 15 mm.
8 Using the scale
1. When batteries are inserted and the ON/OFF key is pressed shortly, the test of
all display segments is carried out and then the 0.00 display will be shown.
2. Now a baby is to be laid down gently in the centre of the scale pan. Pay
attention whether baby feet are towards the rise of the scale pan.
3. When the weight is stable on the scale pan (> 1 kg), the display will flash for a
moment and the display value will be held for 12 seconds.
4. If you want to delete the saved value earlier, press the ON/OFF key. Then the
scale is operated in the normal weighing mode and shows the present weigh-
ing value.
5. To switch off the scale, press the ON/OFF key for 3 seconds. If the scale is not
switched off manually, it is switched off automatically after about 2 minutes
without change of the weighing value.
The scale is provided with the automatic taring function:
To weigh a baby without taking into account a weight of a blanket lying on the scale
pan, place a blanket or cushion on the scale pan before the scale is switched on.
When the scale is switched on, 0.00 value will be displayed and the weight, which
was lying on the scale pan before its switching on, will be tared.

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9 Error messages
EE: No possibility of displaying the weighing value. It occurs e.g. when a
weight is removed after finishing the automatic taring.
Remove a weight, switch off the scale and switch it on again.
10 Service, maintenance, disposal
10.1 Cleaning
Do not use aggressive cleaning agents (solvents or similar agents), but a cloth damp-
ened with mild soap suds or cleaning agent. Ensure that no liquid penetrates into the
device and wipe the device with a dry soft cloth.
Loose impurities can be removed carefully by using a brush or hand vacuum cleaner.
Do not tilt or turn the scale to carry out its cleaning because this may result in the
scale damage.
Remove any impurities immediately.
10.2 Service, maintenance
The device may only be operated and maintained by trained service technicians who
are authorised by KERN.
10.3 Disposal
Disposal of packaging and device must be carried out by an operator according to
valid national or regional law of the location where the device is used.

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11 Troubleshooting
The scale should be switched off for a short time following an interruption in the pro-
gram sequence and disconnected from mains supply. It is then necessary to repeat
the weighing process from the beginning.
Help:
Interruption Possible cause
Weight display is not illumi-
nated.
•The scale is not switched on.
•Batteries are incorrectly inserted or discharged
•No batteries.
Weight display changes
continuously •Draught/air movement
•Table/floor vibrations
•The weighing plate is in contact with foreign mat-
ters or is installed incorrectly.
•Electromagnetic fields/static charging (choose a
different location for the scale, switch off an inter-
fering device if possible)
The weighing result is obvi-
ously incorrect
•The scale display is not set to zero
•Incorrect adjustment.
•Great fluctuations in temperature .
•Warm-up time was ignored.
•Electromagnetic fields/static charging (choose a
different location for the scale, switch off an inter-
fering device if possible)
Should other error messages occur, switch the scale off and then on again. If the er-
ror message remains, inform the manufacturer.