EN Diagnostic bathroom scale
Instructions for use
BF 400 / 410
Signature Line
2
ENGLISH
1. Included in delivery............................................. 2
2. Signs and symbols ............................................. 3
3. Intended use ....................................................... 4
4. Warnings and safety notes ................................. 4
5. Device description .............................................. 6
6. Initial use ............................................................ 6
7. Entering user data .............................................. 6
8. Usage ................................................................. 7
9. Cleaning and maintenance ............................... 10
10. What if there are problems? ...........................10
11. Disposal .......................................................... 11
12. Technical specifications ................................. 11
13. Warranty/service ............................................. 11
Getting to know your device
Functions of the device
This digital scale is intended for weighing and providing a diagnosis of your personal fitness data.
It is intended for private use.
The scale is equipped with the following functions, which can be used by up to 10 different people:
• Body weight measurement and BMI
• Body fat percentage calculation
• Body water content
• Muscle percentage
• Bone mass
• Basal and active metabolic rate
The scale also includes the following additional functions:
• Switch between kilograms “kg”, pounds “lbs” and stones “st”
• Automatic switch-off function
• Low battery indicator
• Automatic user recognition
The measurement principle
This scale works on the principle of B.I.A. (bioelectrical impedance analysis). This involves the calculation
of body content in a matter of seconds, using a current that cannot be felt, is completely harmless and
does not pose any risk.
When this measurement of the electrical resistance (impedance) is considered alongside constants and/
or individual values (age, height, gender, activity level), the body fat percentage and other variables in the
body can be calculated. Muscle tissue and water conduct electricity well and therefore have a lower resis-
tance. In contrast, bones and fat tissue have low conductivity as the fat cells and bones are barely able to
conduct the current due to very high levels of resistance.
Please note that the values calculated by the diagnostic bathroom scale only represent an approxima-
tion of the actual medical analytical values for the body. Only a specialist doctor can precisely establish
the body fat, body water, muscle percentage and bone structure using medical methods (e.g. computer
tomography).
1. Included in delivery
Check that the device packaging has not been tampered with and make sure that all contents are pres-
ent. Before use, ensure that there is no visible damage to the device or accessories and that all packaging
material has been removed. If you have any doubts, do not use the device and contact your retailer or the
specified Customer Services address.
Read these instructions for use carefully and keep them for later use,
be sure to make them accessible to other users and observe the
information they contain.
Contents
3
• BF 400 / BF 410 diagnostic bathroom scale
• 3 x 1.5 V, AAA batteries
• These instructions for use
2. Signs and symbols
The following symbols are used on the device, in these instructions for use, on the packaging and on
the type plate for the device:
Warning
Warning instruction indicating a risk of injury or damage to health
Important
Safety note indicating possible damage to the device/accessory
Product information
Note on important information
Read the instructions
The electronic device must not be disposed of with household waste
Do not dispose of batteries containing hazardous substances with household
waste
Separate the packaging elements and dispose of them in accordance with
local regulations.
B
A
Marking to identify the packaging material.
A = Material code, B = Material number:
1-7 = Plastics, 20-22 = Paper and cardboard
CE labelling
This product satisfies the requirements of the applicable European and national
directives.
United Kingdom Conformity Assessed Mark
The products demonstrably meet the requirements of the Technical Regulati-
ons of the EAEU.
The device may not be used by people with medical implants (e.g. pacema-
kers), as this may affect their functionality.
Manufacturer
Separate the product and packaging elements and dispose of them in
accordance with local regulations.
Importer symbol
Do not load the scale bey-
ond 200 kg / 440 lb / 31 st.
Danger of slipping: do not step
on the scale with wet feet.
4
Danger of tipping: position
yourself in the centre of the
weighing surface.
Place the scale on an even
surface. No carpet.
3. Intended use
The device is only intended for weighing humans and for recording your personal fitness data. The device
is only intended for private use, and not for medical or commercial purposes.
4. Warnings and safety notes
WARNING
• The scale may not be used by people with medical implants (e.g. pacemakers) as
this may affect their functionality.
• Do not use during pregnancy.
• Do not step onto the outer edge of the scale on just one side: danger of tipping!
• Swallowing batteries can be extremely dangerous. Keep the batteries and scale out of
the reach of small children. Should a battery be swallowed, seek medical assistance immediately.
• Keep packaging material away from children (risk of suffocation).
• Important: do not step onto the scale with wet feet or if the surface of the scale is damp – danger
of slipping!
Safety notes on handling batteries
•
Always insert the batteries correctly, taking into account the polarity (+ / -). Keep batteries clean
and dry and away from water. Always select the correct battery type.
•
Never short-circuit batteries and battery compartment contacts.
•
Never charge, forcibly discharge, heat, disassemble, deform, encapsulate or modify batteries.
•
Never weld or solder on batteries.
•
Never mix batteries of different manufacturers, capacities (new and used), size and type within a
device.
•
Risk of explosion! Failure to comply with the points mentioned above can result in personal
injury, overheating, leakage, venting, breakage, explosion or fire.
•
If a battery has leaked, put on protective gloves and clean the battery compartment with a dry
cloth.
•
If your skin or eyes come into contact with battery fluid, rinse the affected areas with water and
seek medical assistance.
•
Choking hazard! Keep batteries out of the reach of children. Seek medical attention immediately
if swallowed.
•
Never allow children to replace batteries without adult supervision.
•
Store batteries away from metal objects in a well-ventilated, dry and cool place.
•
Never expose batteries to direct sunlight or rain.
•
Remove batteries from the device if it is not going to be used for a long period of time.
•
Dispose of discharged batteries immediately and properly. Never dispose of batteries in fire.
•
When disposing of batteries, keep batteries with different electrochemical systems separate.
General notes
• Please note that measuring tolerances are possible for technical reasons, as this scale is not cali-
brated for use in a professional medical context.
• The scale’s maximum capacity is 200 kg (440 lb/31 st). The results for the weight measurement
and bone mass calculation are displayed in 100-g increments (0.2 lb/0-19st: 0.2 lb; 20-31st: 1lb).
• Measurements of body fat, body water and muscle content are displayed in increments of 0.1%.
• The calorie requirement is indicated in increments of 1 kcal.
• When supplied to the customer, the scale is set to weigh and measure in “kg” and “cm”.
5
• Place the scale on an even, hard surface; a hard surface is crucial for achieving accurate meas-
urements.
• Repairs may only be carried out by Beurer Customer Services or authorised retailers. Before sub-
mitting a complaint, please check the batteries first and replace them if necessary.
Storage and maintenance
The accuracy of the measurements and service life of the device depend on its careful handling:
IMPORTANT
• The device should be cleaned from time to time. Do not use any abrasive cleaning products and
never submerge the device in water.
• Make sure that no liquids come into contact with the scale. Never submerge the scale in water.
Never rinse it in running water.
• Do not place any objects on the scale when it is not in use.
• Do not press the button violently or with pointed objects.
• Do not expose the scale to high temperatures or strong electromagnetic fields (e.g. mobile tele-
phones).
• Protect the device from knocks, damp, dust, chemicals, marked temperature fluctuations and
nearby sources of heat (ovens, heaters).
General tips
• As far as possible, weigh yourself at the same time of day (ideally in the morning), after having been to
the toilet, on an empty stomach and without clothing, in order to obtain results which can be compared.
• Important point regarding the measurement: the calculation of body fat may only be made when bare-
foot; the soles of the feet may be lightly dampened where appropriate.
Results may be unsatisfactory if the soles of the feet are completely dry or have a large amount of hard
skin since conductivity will be impaired.
• Stand up straight and still during the measurement.
• Wait a few hours after any physical exertion to which your body is unaccustomed.
• Wait approx. 15 minutes after getting up so that the water stored in the body can disperse.
•
Remember that only the long-term trend is important. Short-term changes in weight within a few days are
normally caused by loss of fluids; however, body water plays an important role in terms of well-being.
Limitations
When calculating body fat and the other values, unusual and implausible results may occur in the case of:
• Children under approx. 10 years of age
• Performance athletes and body-builders
• Persons with a fever, persons undergoing dialysis, persons with oedema symptoms and persons suffer-
ing from osteoporosis
• Persons taking cardiovascular medicine (affecting the heart and vascular system)
• Persons taking vasodilative or vasoconstrictive medication
• Persons with significant anatomical abnormalities in their legs compared with their overall body height
(leg length significantly shorter or longer).
6
5. Device description
Overview
1
52 3 4
1. Electrodes
2. Down button
(pushbutton on the front side)
3. Set button
(pushbutton on the front side)
4. Up button
(pushbutton on the front side)
5. Display
6. Initial use
Inserting the batteries
Remove the batteries from the protective packaging and insert the batteries into the scale (rear of the
scale) ensuring that the battery polarity is correct. If the scale does not function, remove the batteries
completely and reinsert them.
Changing the weight unit
When supplied to the customer, the scale is set to weigh in “kg”. Switch on the scale by briefly applying
pressure to the standing surface with your foot (approx. 1-2 seconds). Wait until “
kg” appears in the
display. To the rear of the scale, there is a button where you can select “pound” and “stones” (lb, st).
Positioning the scale
Place the scale on an even, hard surface; a hard surface is crucial for achieving accurate
measurements.
7. Entering user data
To calculate your body fat percentage and additional body values, you must save the personal user data.
The scale has 10 user memory spaces which allow you and members of your family to save and access
personal settings, for example.
• Place the scale on an even hard surface; a hard surface is crucial for achieving accurate meas-
urements.
• Switch on the scale by briefly applying pressure to the standing surface with your foot (approx. 1-2 sec-
onds). Wait until “
kg” appears in the display.
• Start configuring the settings by pressing the button. The first memory space flashes in the display.
• Press the / button to select the desired memory space and confirm by pressing the button.
• You can now implement the following settings:
User data Set values
Users/persons P-1 to P-10
Height 100 to 220 cm (3' 3.5" to 7' 2.5")
Age 10 to 100 years
Gender Male (
), female ( )
Activity level 1 to 5
7
Activity levels
The medium-term and long-term perspective is decisive when selecting the activity level.
Activity level Physical activity
1 None.
2
Low: little and light physical exertion (e.g. going for walks, light gardening, simple
gymnastics).
3 Medium: physical exertion, at least 2 to 4 times a week for 30 minutes each.
4 High: physical exertion, at least 4 to 6 times a week for 30 minutes each.
5
Very high: intensive physical exertion, intensive training or hard physical work for at
least 1 hour every day.
• Changing the values: Press either the
or the button, or press and hold to quickly scroll through
the options.
• Confirming the entries: Press the button.
• Once the values have been set, “ kg” appears in the display.
• Now stand on the scale with bare feet whilst “ kg” is displayed.
• Following the weight measurement, BMI, body fat (BF), water, muscle percentage, bone mass, BMR and
AMR are displayed
Note: Your measured weight has now been assigned to your selected user and saved. This is nec-
essary for automatic user detection.
8. Usage
8.1 Taking measurements
Place the scale on an even, hard surface; a hard surface is crucial for achieving accurate measure-
ments.
Measuring weight, carrying out diagnostics
Step onto the scale with bare feet and ensure that you are standing still with equal weight distribution and
with both feet on the electrodes.
Note: The measurement result will be incorrect if the measurement is taken with socks on.
The scale begins to take measurements straight away. First, the weight is displayed.
If a user has been assigned, the BMI, body fat, water, muscle, bone, BMR and AMR are shown.
The following appear:
1. Weight in kg
2. BIA measurement and columns for interpreting the results
3. User memory space (e.g. “U1”)
4. BMI
5. Body fat in % (BF)
6. Body water in %
7. Muscle percentage in %
8. Bone mass in kg
9. Basal metabolic rate in kcal (BMR)
10. Active metabolic rate in kcal (AMR)
Note: If two or more users have potentially been recognised, the display switches between them.
Select your user by pressing the button.
If no user is recognised, only the weight and “U -” will be displayed. You can then use the /
buttons to select your user.
Only measuring weight
Step onto the scale wearing shoes. Stand still with your weight distributed equally on both feet. The scale
begins to take measurements straight away.
Switching off the scale
The scale switches itself off automatically.
1 bzw. 3
4 5 6 7 8 9 10
2
8
8.2 Evaluating the results
For a simpler and more easy to understand classification, your values are interpreted directly on the dis-
play.
Body fat percentage
The following body fat percentages serve as a guideline (for further information please consult your doc-
tor).
Male Female
Age Low Normal Moderate High Age Low Normal Moderate High
10–14 <11% 11–16% 16.1–21% >21.1% 10–14 <16% 16–21% 21.1–26% >26.1%
15–19 <12% 12–17% 17.1–22% >22.1% 15–19 <17% 17–22% 22.1–27% >27.1%
20–29 <13% 13 –18% 18.1–23% >23.1% 20–29 <18% 18–23% 23.1–28% >28.1%
30–39 <14% 14–19% 19.1–24% >24.1% 30–39 <19% 19–24% 24.1–29% >29.1%
40–49 <15% 15–20% 20.1–25% >25.1% 40–49 <20% 20–25% 25.1–30% >30.1%
50–59 <16% 16–21% 21.1–26% >26.1% 50–59 <21% 21–26% 26.1–31% >31.1%
60–69 <17% 17–22% 22.1–27% >27.1% 60–69 <22% 22–27% 27.1–32% >32.1%
70–100 <18% 18–23% 23.1–28% >28.1% 70–100 <23% 23–28% 28.1–33% >33.1%
Values will often be lower for fitness enthusiasts. Depending on the sporting activities performed, the train-
ing intensity and the physical constitution, the results may still be below the stated standard values. Please
note, however, that there may be a risk to health in the case of extremely low values.
Body water content
The body water content in % is normally within the following ranges:
Male Female
Age Poor Good Very good Age Poor Good Very good
10–100 <50% 50–65% >65% 10–100 <45% 45–60% >60%
Body fat contains relatively little water, therefore body water content may be below the standard values in
persons with a high body fat percentage. On the other hand, endurance athletes may exceed the standard
values due to having low levels of fat and a high muscle percentage.
The body water calculation performed using this scale is not suitable for drawing medical conclusions,
for example in the case of age-related water retention. Consult your doctor where necessary. A high body
water content is generally desirable.
Muscle percentage
The muscle percentage is normally within the following ranges:
Male Female
Age Low Normal High Age Low Normal High
10–14 <44% 44–57% >57% 10–14 <36% 36–43% >43%
15–19 <43% 43–56% >56% 15–19 <35% 35–41% >41%
20–29 <42% 42–54% >54% 20–29 <34% 34–39% >39%
30–39 <41% 41–52% >52% 30–39 <33% 33–38% >38%
40–49 <40% 40–50% >50% 40–49 <31% 31–36% >36%
50–59 <39% 39–48% >48% 50–59 <29% 29–34% >34%
60–69 <38% 38–47% >47% 60–69 <28% 28–33% >33%
70–100 <37% 37–46% >46% 70–100 <27% 27–32% >32%
Bone mass
Like the rest of our body, our bones are subject to natural growth, shrinking and ageing processes. Bone
mass increases rapidly during childhood and reaches its peak between the ages of 30 and 40. As we
9
age, our bone mass then begins to reduce. You can combat this reduction to an extent with the help of a
healthy diet (particularly calcium and vitamin D) and regular physical exercise. The stability of your skeleton
can be further increased by means of targeted muscle build-up. Please note that this scale does not iden-
tify the total bone mass, but rather just the mineral content of the bone (without water content and without
organic substances). It is very difficult to influence the bone mass, although it does fluctuate slightly within
the scope of influencing factors (weight, height, age, gender). There are no recognised guidelines or recom-
mendations.
IMPORTANT:
Please do not confuse bone mass with bone density.
The bone density can only be determined by means of a medical examination (e.g. computer
tomography, ultrasound). It is therefore not possible to draw conclusions on changes to bones and
bone hardness (e.g. osteoporosis) using this scale.
BMR
The basal metabolic rate (BMR) is the amount of energy required by the body at complete rest in order to
maintain its basic functions (e.g. when lying in bed 24 hours a day). This value is primarily dependent on
weight, height and age.
It is displayed on the diagnostic bathroom scale in the kcal/day unit and is calculated using the scientifi-
cally recognised Harris-Benedict equation.
This is the amount of energy that is required by your body under all circumstances and must be re-sup-
plied to the body in the form of food. If your energy intake is below this level in the longer term, this can
result in damage to health.
AMR
The active metabolic rate (AMR) is the amount of energy that the active body consumes each day. An indi-
vidual’s energy requirement increases when the level of physical activity increases; the diagnostic bath-
room scale calculates this by means of the activity level (1-5) that has been entered.
To maintain the current weight, the energy that the body uses must be replaced in the form of food and
drink.
If less energy is taken in than is used over a long period of time, the body primarily takes the difference
from the fat stores, with resulting weight loss. However, if the amount of energy taken in exceeds the cal-
culated active metabolic rate (AMR) for a longer period, the body cannot burn off the excess energy. The
excess is stored in the body as fat, leading to weight gain.
Temporal context of the results
Note: Please note that only the long-term trend is important. Brief deviations in weight within a few
days are normally caused by loss of fluids.
The interpretation of the results is based on changes in total body weight, percentage of body fat, body
water and muscle content, as well as on the length of time over which these changes occur.
Rapid changes within the scope of a few days are to be considered separately from medium-term
changes (in the scope of weeks) and long-term changes (months).
It can be said as a basic rule that short-term changes in weight are almost entirely changes in water con-
tent, whereas medium-term and long-term changes may also relate to the fat percentage and the muscle
percentage.
• If your weight drops in the short term but your body fat percentage increases or stays the same, you
have only lost water, for example following a training session, visit to the sauna or a diet aimed only at
fast weight loss.
• If your weight increases in the medium term and your body fat percentage drops or stays the same, you
may have built up valuable muscle mass.
• If your weight and body fat percentage both fall at the same time, then your diet is working – you are
losing fat mass.
• Ideally, you should support your diet with physical activity, fitness or strength training. This enables you
to increase your muscle percentage in the medium term.
• Body fat, body water and muscle percentages should not be totalled (muscle tissue also contains com-
ponents made of body water).
10
8.3 Other functions
User assignment
It is possible to assign up to 10 scale users for a diagnostic measurement (barefoot).
For a new measurement, the scale assigns the measurement to the user whose most recently saved mea-
surement falls within +/- 3kg. If two or more users have potentially been recognised, the display switches
between them. Select your user by pressing the
/ button.
Deleting scale data
If you would like to completely delete all measurements and old user data on the scale, switch on the
scale and press the UNIT button on the rear of the scale for approx. 6 seconds.
“CLr” will appear on the display for several seconds.
This is necessary if you would like to delete scale users who have been set up incorrectly or are no longer
required, for example.
Replacing the batteries
Your scale is equipped with a low battery indicator. If you operate the scale with flat batteries, “Lo” will
appear on the display and the scale will automatically switch off. In this case, the batteries must be
replaced (3 x 1.5 V AAA).
NOTE:
• When replacing the batteries, use batteries of the same type, make and capacity.
• Do not use rechargeable batteries.
• Use batteries free from heavy metals.
9. Cleaning and maintenance
The device should be cleaned from time to time.
This should be done using a damp cloth and, if necessary, a small amount of detergent.
IMPORTANT
• Never use abrasive solvents or cleaning products!
• Never submerge the device in water!
• Do not clean the device in a dishwasher!
10. What if there are problems?
If the scale encounters an error during measurement, the following is displayed:
Display Cause Solution
U - Unknown measurement as it
is outside the user assignment
limit or a unique assignment is
not possible.
Select your user by pressing the
/
buttons.
BF Err The proportion of fat is outside
the measurable range (less
than 3% or greater than 65%).
Please repeat the measurement barefoot, or
with the soles of the feet lightly dampened
if necessary.
oLd Maximum weight capacity of
200 kg exceeded.
Loads must not exceed 200 kg.
Incorrect weight is dis-
played.
Surface scale is placed on is
not even and hard e.g. carpet.
Place the scale on an even, hard surface.
Incorrect weight is dis-
played.
Not standing still. Stand as still as possible.
Incorrect weight is dis-
played.
Incorrect zero point of scale. Wait until the scale switches itself off. Acti-
vate the scale, wait for “0.0 kg” to appear
and take the measurement again.
11
Display Cause Solution
Lo The batteries in the scale are
flat.
Replace the batteries in the scale.
BF - - - BIA measurement not possible. Please repeat the measurement barefoot, or
with the soles of the feet lightly dampened
if necessary. Remain on the stainless steel
electrodes after weight measurement, until
the body analysis values are displayed.
11. Disposal
Empty, completely flat batteries must be disposed of through specially designated collection boxes, recy-
cling points or electronics retailers. You are legally required to dispose of the batteries.
The codes below are printed on batteries containing harmful substances:
Pb = Battery contains lead
Cd = Battery contains cadmium
Hg = Battery contains mercury
For environmental reasons, do not dispose of the device in the household waste at the end of its service
life. Dispose of the device at a suitable local collection or recycling point in your country.
Dispose of the device in accordance with EC Directive – WEEE (Waste Electrical and Electronic
Equipment). If you have any questions, please contact the local authorities responsible for waste
disposal.
12. Technical specifications
Model: BF 400 BF 410
Dimensions: 31 x 31 x 2.8 cm 35 x 30 x 2.8 cm
Weight: 2170 g 2660 g
Measurement range: 5-200 kg
Subject to technical changes.
13. Warranty/service
Further information on the warranty and warranty conditions can be found in the warranty leaflet supplied.
Subject to errors and changes
12
BF400-410_2024-02-02_05_IM1_BEU_EN
Beurer GmbH • Söflinger Str. 218 • 89077 Ulm (Germany) • www.beurer.com
www.beurer-gesundheitsratgeber.com • www.beurer-healthguide.com
UK Importer: Beurer UK Ltd., Suite 16, Stonecross Place, Stonecross Lane North,
WA3 2SH Lowton,United Kingdom
