Beurer GS 42 Mode D'emploi page 16

10 evaluation of results
Body mass index (BMI)
The body mass index (BMI) is a number that is often called upon to evaluate body weight. The
number is calculated from body weight and height, the formula is – body mass index = body
weight : height². The measurement unit for BMI is [kg/m²]. According to the BMI, weight is
classified for adults (20 years and over) using the following values (source: WHO):
Display Category
Pink Underweight
Green Normal weight
Yellow Overweight
Red Obese (overweight)
Results in relation to time
Remember that only long-term trends are important. Short-term fluctuations in
weight over a few days are usually the result of a loss of fluid.
11 Replacing batteries
The batteries in the scale must be replaced if the message "Lo" appears in the display. If the
batteries are too flat, then the scale will switch off automatically.
Note:
• When changing batteries, always use batteries of the same type, brand and capacity.
Always replace all batteries simultaneously.
• Do not use rechargeable batteries.
• Use batteries that are free of heavy metals.
12 Storage and maintenance
The precision of the measurements and service life of the device depends on its careful handling:
Important:
• The unit should be cleaned occasionally. Use a slightly damp cloth to clean the device. You
may also use a small quantity of cleaning agent if desired. Do not use abrasive detergents
and never immerse the unit in water.
• Protect the scale from knocks, damp, dust, chemicals, drastic changes in temperature,
electromagnetic fi elds and nearby sources of heat (ovens, heaters). Do not press the
buttons violently or with pointed objects.
Severely underweight
Moderately underweight
Slightly underweight
Pre-obese
Class I obese
Class II obese
Class III obese
16
BMI
< 16
16-16,9
17-18,4
18,5-25
25,1-29,9
30-34,9
35-39,9
≥ 40