KERN MFB User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating manual
Electronic bathroom scales
KERN MFB
Type MGE
Version 2.1
2021-02
GB
MFB-BA-e-2121

MFB-BA-e-2121
2
GB
KERN MFB
Type MGE
Version 2.12021-02
Operating instructions bathroom scales
Contents
1Technical data ................................................................................................... 3
2Declaration of conformity................................................................................. 3
3Appliance overview........................................................................................... 4
3.1 Keyboard overview.................................................................................................. 4
3.2 Overview of display................................................................................................. 5
4Basic Information (General) ............................................................................. 6
4.1 Proper use................................................................................................................ 6
4.2 Improper Use............................................................................................................ 6
4.3 Warranty................................................................................................................... 6
5Basic Safety Precautions.................................................................................. 7
5.1 Pay attention to the instructions in the Operation Manual................................... 7
6Transport and storage ...................................................................................... 7
6.1 Testing upon acceptance........................................................................................ 7
6.2 Packaging................................................................................................................. 7
7Unpacking, Setup and Commissioning........................................................... 8
7.1 Installation Site, Location of Use............................................................................ 8
7.2 Unpacking ................................................................................................................ 8
7.3 Battery operation..................................................................................................... 8
8Using the balance.............................................................................................. 9
8.1 Entering person-related data.................................................................................. 9
8.2 How to determine body values ..............................................................................10
8.3 Table for standard values body fat, body water, muscle, bone and Classification
of BMI values...........................................................................................................11
9Servicing, maintenance, disposal.................................................................. 13
9.1 Cleaning ..................................................................................................................13
9.2 Servicing, maintenance..........................................................................................13
9.3 Disposal...................................................................................................................13
10 Error messages............................................................................................ 13
11 Instant help................................................................................................... 13

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1 Technical data
KERN (Typ) MGE 100K-1
Trademark MFB 150K100
Readability (d) 0.1 kg
Weighing range (max) 182 kg
Accuracy +- 0.5% +- 0.1kg
Weighing Units kg, lb
Stabilization time 2 sec.
Height of digits (mm) 35 mm
Operating temperature -10° C …. + 40° C
Humidity of air max. 80 % (not condensing)
Battery 2 x CR2032
Operating period: 100 h
Auto-Off: 10 s
Dimensions (B x D x H)
mm
300 x 300 x 25
Material weighing
platform Glass
Weight kg (net) 2.0
2 Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce

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3 Appliance overview
1
Display
2 Buttons
3 - 6 Electrodes
3.1 Keyboard overview
•Switch on balance
•Call up menu
•Confirm entry in menu
Scroll forward in menu
Scroll backwards in menu

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3.2 Overview of display
fat % Body fat ratio in % kg Kilogram
TBW Body water ratio in % % Percent
Muscle ratio in % Gender of person Male
Bone weight in kg
Person male and athletic
KCAL Calories
Gender of person Female
BMI Body Mass Index
Person female and athletic
age Age P8 User ID (P0-P9)
cm Centimetre

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4 Basic Information (General)
4.1 Proper use
This balance is used to calculate the weight of people in the private sphere.
Utilisation of this balance in the medical field is not permissible.
The weighing process requires that the person stands on the weighing plate in a way
that provides even weight distribution over the entire weighing plate. 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. The removal or addition of small amounts
of load may result in the display of inaccurate weighing results! (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.
Take care to avoid impacts and overloading of balance above the specified maximum
load (max) under all circumstances. This could cause damage to the balance.
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 if
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
Dropping the balance

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5 Basic Safety Precautions
5.1 Pay attention to the instructions in the Operation Manual
Attention:
Stepping on the edge of the weighing plate may cause tilting of balance or fall of
person.
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
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
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.

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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 appliance for ca. 2 hours at room temperature.
- Avoid static charge of the balance and of the person to be weighed.
- Avoid contact with water.
The occurrence of electric fields or electrostatic charge may result in major display
deviations (incorrect weighing results). In that case, the location must be changed.
7.2 Unpacking
Take the whole balance out of their packaging and place them at the intended
position. In addition to the scales, delivery also includes operating instructions.
7.3 Battery operation
The message “LO“ on the display indicates a low battery. Replace batteries as
quickly as possible with a new set.
Insert batteries as shown in the illustration:
If the balance is not used for a longer time, take out the batteries and store them
separately. Leaking battery liquid could damage the balance.

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8 Using the balance
Step on the scales with bare feet. When doing so, make sure that each foot
touches at least one of the sensors. Try standing as still and upright as
possible.
The weight of a person will be shown after a few seconds.
When the scales are not in use, they will switch off automatically after a few
seconds.
The typical weight of a person will vary over the day, and equally from
one day to the next. Minor weight variations are considered normal.
8.1 Entering person-related data
Press while the scales are unloaded.
Use the arrow keys and to select the
desired user ID and confirm by . The selected ID
will be flashing on the display.
(example)
Use the arrow keys and “male ”,
“female ”, “male athletic “ or “female
athletic “ and confirm by . The symbol for
the selected gender will be flashing on the display.
(example)
Use the arrow keys and to select age
(10-80 yrs.) and confirm with SET. The set age will
be flashing on the screen.
(example)
Use the arrow keys and to select height
(100-240 cm) and confirm by . The set height
will be flashing.
(example)

When you have finished these four settings, press
again. The scales will change to zero display.
The entry of personal data is now complete.
Based on this profile you can now determine the values for weight, body fat percentage,
body water percentage, muscle percentage, bone weight and body mass index for each
person.

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8.2 How to determine body values
Make sure scales are unloaded, then press .
The values entered previously will be queried a
second time The activated symbol or the entered
value will be flashing.
Confirm value by or
Use the arrow keys and to change the
value and confirm by . The zero display
appears.
(example)

Step on the scales with bare feet. When doing so,
make sure that each foot touches a sensor. Remain
as upright and still as possible on the weighing
platform.
The weight will be shown, followed by the values for body fat percentage, body
water percentage, muscle percentage, bone weight, body mass index and calories.

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8.3 Table for standard values body fat, body water, muscle, bone and
Classification of BMI values
Body fat (%):
Age
Female
Male
too low
normal
too
high
obese
too low
normal
too
high
obese
12-20 <18% 18-28% 28-33% >33% <15% 15-21% 21-26% >26%
21-42 <20% 20-30% 30-35% >35% <17% 17-23% 23-28% >28%
43-65 <21% 21-31% 31-36% >36% <18% 18-24% 24-29% >29%
66-80 <22% 22-32% 32-37% >37% <19% 19-25% 25-30% >30%
Muscle (%):
Age
Low
Normal
High
Very high
Female
18-39 <24,3 24,3-30,3 30,4-35,3 >35,4
40-59 <24,1 24,1-30,1 30,2-35,1 >35,2
60-80 <23,9 23,9-29,9 30,0-34,9 >35,0
Male
18-39 <33,3 33,3-39,3 39,4-44,0 >44,1
40-59 <33,1 33,1-39,1 39,2-43,8 >43,9
60-80 <32,9 32,9-38,9 39,0-43,6 >43,7
Bone (kg):
Female
Body weight < 45 kg 45-60 kg > 60 kg
Estimated bone
weight > 1.8 kg > 2.2 kg > 2.5 kg
Male
Body weight < 60 kg 60 – 75 kg > 75 kg
Estimated bone
weight > 12,5 kg > 2,9 kg > 3,2 kg

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Body water (%):
Age Female Male Corresponding
Hydration level
< 30
66,0 - 60,5 % 66,0 – 59,9% Optimal Hydration
Weight scope of
hydration:
37,8 – 66,0%
Hydration rate
graduation:
0,1 %
60,4 - 57,1 % 59,8 – 56,4% Slight Dehydration
57,0 – 53,6 % 56,3 – 53,0% Moderate Dehydration
53,5 – 50,2% 52,9 – 48,6% Dehydration
50,1 – 37,8 % 48,5 – 37,8% Severe Dehydration
> 30
66,0 – 59,1 % 66,0 – 55,0% Optimal Hydration
59,0 – 55,7 % 54,9 – 51,6% Slight Dehydration
55,6 – 52,3 % 51,5 – 48,1% Moderate Dehydration
52,2 – 48,8% 48,0 – 44,7% Dehydration
48,7 – 37,8 % 44,6 – 37,8% Severe Dehydration
Classification of BMI values:
(same for female and male)
Age low normal high
<24 < 19 19 - 24 > 24
25 - 34 < 20 20 - 25 > 25
35 - 44 < 21 21 - 26 > 26
45 - 54 < 22 22 - 27 > 27
55 - 64 < 23 23 - 28 > 28
> 64 < 24 24 - 29 > 29

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9 Servicing, maintenance, disposal
9.1 Cleaning
Do not use aggressive cleaning agents (solvents or similar) but only a damp cloth
with mild soapsuds, or household cleaner. Ensure that no liquid gets inside the unit
and rub with a soft, dry cloth. Loose dirt can be removed carefully with a brush or
hand-held vacuum cleaner.
Balance must not be tilted or rotated for cleaning, as damage may occur.
Remove dirt immediately.
9.2 Servicing, maintenance
The appliance may only be opened by trained service technicians who are authorized
by KERN.
9.3 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.
10 Error messages
“Err“ on the display indicates that the weighing range has been exceeded.
Please take the weight off the scales.
“Err2“ on the display indicates that the body values exceed the detection
range of the scales. Please take the weight off the scales.
“FATL“ on the display indicates that the fat rate is lower than 5%, please
check the input of your person-related data see chap. 8.1
“FATH“ on the display indicates that the fat rate is higher than 50%, please
check the input of your person-related data see chap. 8.1.
11 Instant help
Entering person-related data
Help:
Fault Possible cause
The displayed weight is
permanently changing
•Draught/air movement
•Table/floor vibrations
•Weighing plate 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
•Great fluctuations in temperature.
•Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
If the error message remains inform manufacturer.