Omron BF400 User Manual

6

1.What You Should Know When Using This Unit

If the soles of your feet are dry or the temperature of your feet or the electrodes are 

extremely cold, it will not be possible to obtain stable measurements, which may lead to 

display error indication or inaccurate results.
Please pay special attention in winter because the air is dry and/or the temperature is 
low.

Understanding the normal changes in your body fat percentage can help you in 

preventing or reducing obesity. Being aware of the times when the body fat percentages 

shift within your own daily schedule will assist you in obtaining an accurate trending of 

your body fat. It is recommended to use this unit in the same environment and daily 

circumstances. (See chart)

Feet are dry.

Slightly moisten soles of your feet with a wet 
towel, then measure.

When you step onto the electrodes, they feel 
cold.

Allow the electrodes to warm by leaving the 
unit in a warm room for approximately ten 
minutes.

Your body and feet are cold due to the blood 
not circulating well.

Warm your feet by immersing in hot water or 
staying in a warm room. Make sure the feet 
are dried properly.

Daily activities

2 hours

2 hours

2 hours

After waking up

Before lunch and about 2 hours or 

more after breakfast

In the afternoon about 2 hours or 

more after lunch and before taking 

a bath or eating dinner

Before going to bed and about 2 

hours or more after dinner

Avoid measurement immediately 

after eating or bathing.

HBF-400.book  Page 6  Wednesday, October 15, 2008  12:05 PM