MPS / MTS / MXS / MWS-BA-e-1215348.4.1 Classification of BMI valuesClassification of weight for adults over 18 years on the basis of Body Mass Indexaccording to WHO, 2000 EK IV and WHO 2004 (WHO - World Health Organization).Category BMI (kg/m2) Risk of diseases accompanyingoverweightUnderweight < 18.5 lowNormal weight 18.5 – 24.9 averageOverweightPreobesityI degree of obesityII degree of obesityIII degree of obesity> 25.025.0 – 29.930.0 – 34.935.0 – 39.9> 40slightly increasedincreasedhighvery high8.5 PRE-TARE functionWhen a tare weight (rubber mat, clothes, ...) is known, this value can be enteredmanually.If the PRE-TARE key is pressed shortly, the flashing display will be shown.The PRE-TARE function is active as long as the small arrow is pointing the ”PRE-TARE” symbol on the display.The value used as the last one will be displayed. If a different value is required, anew weight value can be entered with the numerical keypad. By pressing the ENTERkey, the new value is confirmed and used. Then the entered value with minus signwill be shown on the display.When a person is placed on the scale plate, the display will show a weight value lessthe value entered previously.Pressing the PRE-TARE key again will return the scale to the normal weighing mode.