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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.
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:
The scale also includes the following additional functions:
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 resistance. 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 approximation 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).
Check that the device packaging has not been tampered with and make sure that all contents are present. 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.
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.
Overview
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.
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.
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 ( ![]() ![]() |
Activity level | 1 to 5 |
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. |
Note: Your measured weight has now been assigned to your selected user and saved. This is necessary for automatic user detection.
Place the scale on an even, hard surface; a hard surface is crucial for achieving accurate measurements.
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:
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.
Step onto the scale wearing shoes. Stand still with your weight distributed equally on both feet. The scale begins to take measurements straight away.
The scale switches itself off automatically.
For a simpler and more easy to understand classification, your values are interpreted directly on the display.
The following body fat percentages serve as a guideline (for further information please consult your doctor).
Male
Age | Low | Normal | Moderate | High |
10–14 | <11% | 11–16% | 16.1–21% | >21.1% |
15–19 | <12% | 12–17% | 17.1–22% | >22.1% |
20–29 | <13% | 13 –18% | 18.1–23% | >23.1% |
30–39 | <14% | 14–19% | 19.1–24% | >24.1% |
40–49 | <15% | 15–20% | 20.1–25% | >25.1% |
50–59 | <16% | 16–21% | 21.1–26% | >26.1% |
60–69 | <17% | 17–22% | 22.1–27% | >27.1% |
70–100 | <18% | 18–23% | 23.1–28% | >28.1% |
Female
Age | Low | Normal | Moderate | High |
10–14 | <16% | 16–21% | 21.1–26% | >26.1% |
15–19 | <17% | 17–22% | 22.1–27% | >27.1% |
20–29 | <18% | 18–23% | 23.1–28% | >28.1% |
30–39 | <19% | 19–24% | 24.1–29% | >29.1% |
40–49 | <20% | 20–25% | 25.1–30% | >30.1% |
50–59 | <21% | 21–26% | 26.1–31% | >31.1% |
60–69 | <22% | 22–27% | 27.1–32% | >32.1% |
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 training 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.
The body water content in % is normally within the following ranges:
Male
Age | Poor | Good | Very good |
10–100 | <50% | 50–65% | >65% |
Female
Age | Poor | Good | Very good |
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.
The muscle percentage is normally within the following ranges:
Male
Age | Low | Normal | High |
10–14 | <44% | 44–57% | >57% |
15–19 | <43% | 43–56% | >56% |
20–29 | <42% | 42–54% | >54% |
30–39 | <41% | 41–52% | >52% |
40–49 | <40% | 40–50% | >50% |
50–59 | <39% | 39–48% | >48% |
60–69 | <38% | 38–47% | >47% |
70–100 | <37% | 37–46% | >46% |
Female
Age | Low | Normal | High |
10–14 | <36% | 36–43% | >43% |
15–19 | <35% | 35–41% | >41% |
20–29 | <34% | 34–39% | >39% |
30–39 | <33% | 33–38% | >38% |
40–49 | <31% | 31–36% | >36% |
50–59 | <29% | 29–34% | >34% |
60–69 | <28% | 28–33% | >33% |
70–100 | <27% | 27–32% | >32% |
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 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 identify 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 recommendations.
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.
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 scientifically recognised Harris-Benedict equation.
This is the amount of energy that is required by your body under all circumstances and must be re-supplied 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.
The active metabolic rate (AMR) is the amount of energy that the active body consumes each day. An individual's energy requirement increases when the level of physical activity increases; the diagnostic bathroom 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 calculated 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.
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 content, whereas medium-term and long-term changes may also relate to the fat percentage and the muscle percentage.
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 measurement falls within +/- 3kg. If two or more users have potentially been recognised, the display switches between them. Select your user by pressing the button.
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.
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:
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.
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. | ![]() |
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 displayed. | Surface scale is placed on is not even and hard e.g. carpet. | Place the scale on an even, hard surface. |
Incorrect weight is displayed. | Not standing still. | Stand as still as possible. |
Incorrect weight is displayed. | Incorrect zero point of scale. | Wait until the scale switches itself off. Activate the scale, wait for "0.0 kg" to appear and take the measurement again. |
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. |
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.
The accuracy of the measurements and service life of the device depend on its careful handling:
When calculating body fat and the other values, unusual and implausible results may occur in the case of:
The following symbols are used on the device, in these instructions for use, on the packaging and on the type plate for the device:
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Beurer Signature BF 400 / BF 410 - Diagnostic Bathroom Scale Manual
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