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References:
Deurenberg* P, Yap M, van Staveren WA.
Body mass index and percent body fat: a meta-analysis
among different ethnic groups.
International Journal of Obesity 1998;22:1164-1171
WHO
Obesity: Preventing and managing the global epidemic.
Report on a WHO Consultation on Obesity, Geneva, 3-5
June, 1997
WHO/NUT/NCD/98.1, Geneva 1998
* Paul Deurenberg, PhD
Associate Professor in Nutrition, Wageningen University,
The Netherlands
Visiting Professor University 'Tor Vergata', Rome, Italy
Nutrition Consultant in Singapore
5. TROUBLESHOOTING
5.1 Possible causes of inaccurate measurements.
Measuring postures that should be avoided
Measurement in the following positions may not provide
accurate measurement.
How to hold the grips.
In the following cases, the electric resistance may not be
measured correctly.
5.2 Explanation of error codes
Error display Cause What to do (the next
button to push)
Electrodes were not Grasp the grips cor-
firmly grasped. rectly and measure.
(Start button)
Measurement posture Measure without or
grip was not stable. moving your arms.
(Start button)
Hands are dry. Slightly moisten
hands with a wet
towel, then measure.
(Start button)
The values of body Check the set height,
fat percentage and weight, age, and
BMI are outside the gender again. (Set
measurable range. button)
Abnormal operation Press the O/I button
again and start
measurement. If this
error occurs again,
consult the nearest
Omron dealer.
5.3 Troubleshooting
Trouble What to inspect How to repair
When the O/I Are the batteries Replace both
button is worn out? batteries with
pushed, nothing new 5 ones
is displayed. Is the battery Insert the batteries
polarity correct? correctly.
The value of body Is the measurement Measure again in
fat percentage posture correct? correct posture.
displayed is ab-
normally high
(or low).
An error (E1 to E6) Please refer to "Explanation of Error
is displayed and Codes". (see above)
the measurement
is impossible.
The results differ Please refer to "How to Obtain a Correct
extremely for each Measurement"
measurement.
Other conditions. Push the O/I button again and restart
from the beginning
If you are unable to obtain a correct measurement after
taking the above-mentioned troubleshooting steps, please
contact the nearest OMRON dealer.
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Elbows are bent.
Arms held at an angle,
either too low ot too high.
Measuring while lying down
or sitting.
Moving your body or arms
during measurement.
Your fingers are
not properly
gripping the
electrodes.
When holding the grips, the hands are
positioned unevenly towards the top or
the bottom.
3.5 Setting and using personal memory number
The Omron BF 306 body fat monitor has a memory function.
This function enables you to store the data for 9 persons.
Push the O/ I button
All the display segments turn on
When you want to set the personal memory number and store
personal data:
Select the personal memory number.
1. Push the ▼/▲ button and select a
personal number from 1 to 9.
2. Push the Set button.
The personal number turns on and changes
to height setting mode.
3. Set the personal data - continue with step
3 paragraph 3.3 "Setting personal data".
Taking a measurement by using your personal memory (be
sure the device is on):
Search your personal memory number
1. Push the ▼/▲ button to select your memory number
2. Push the Set button.
The memory number is indicated and your personal data is
displayed.
3. Carry out the measurement.
Refer to "To take the measurement” paragraph 3.4
3.6 To change any values
1. Push the Set button to go to the personal data you want
to change.
2. Push the ▼/▲ button to change the setting.
By pushing both the ▼/▲ buttons at the same time, the
current flashing display will reset to the initial value.
How to delete all 9 personal data values from the memory
1. Push the ▲ button and select the memory No. 1.
2. Push the SET button for 2 seconds.
3. All personal data is deleted and all.
4. The display segments turn on.
(Same state as when the O/I button is pushed.)
If you leave the set items on the screen without confirma-
tion, in approximately 1 minute the display will change to
the initial values or the to values before setting.
After 1 minute, the unit will automatically turn off.
If your age, weight, or height has changed, correct the
value accordingly.
4. HOW TO INTERPRET MEASURED
RESULTS
4.1 BMI Value
BMI is an internationally used index to show the body
condition by checking the balance between the height and
the weight.
It is calculated by the following formula:
BMI = weight / height
2
BMI BMI value*
< 18.5 LOW
>18.5 and < 25 NORMAL
> 25 and < 30 HIGH
> 30 TOO HIGH
* The above mentioned indices refer to the values for obesity proposed
by the WHO (World Health Organization)
4.2 Body fat percentage
Displays the body fat mass as the percentage of body weight.
Obesity judgment Low Normal
High Too high
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BODY FAT MONITOR BF306
BODY FAT MONITOR BF306
0% 10% 20% 30% 40% 50%
30 – 39
18 – 29
age
bodyfat%
40 – 49
50 – 59
60 – 70
Female
0% 10% 20% 30% 40% 50%
30 – 39
18 – 29
age
bodyfat%
40 – 49
50 – 59
60 – 70
Male
Graphical inter-
pretation of BMI
value (LOW >>
TOO HIGH)
Graphical inter-
pretation of
measured FAT%,
based on
Deurenberg’s*
table below