Braun BET 1000, Instruction Manual

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Braun behind ear thermometer instruction manual

The Braun behind ear  thermometer has been carefully developed for 

accurate, safe and fast temperature measurements.
However, as with any thermometer, proper technique is critical in obtaining 

accurate temperatures. Therefore, read the use instructions carefully and 

thoroughly.

Warnings and precautions

1.     Do not use thermometer for 20 minutes on skin if exposed to hot 

or cold temperatures such as direct sunlight, fireplace heat, cold 

(compress), direct air conditioning air flow, swimming, bathing, etc. 

2.     Do not place the thermometer on scarred tissue or tissue  

compromised by skin disorders. 

3.     Do not use on patients in trauma or patients treated with certain  

drug therapies. 

4.     Do not take temperature from the side on which the patient was  

laying on - use the opposite side. 

5.     Do not expose the thermometer to temperature extremes  

below -20°C  or over 50°C  nor excessive humidity  

(> 85% non-condensing relative humidity).

6.     Do not use this thermometer if the operating ambient temperature 

range is below 10C°  or over 40C° .

7.     Do not mount the battery with the positive sign facing down. The 

thermometer will not work.

8.    This thermometer is intended for household use only. 
9.     Use of this thermometer is not intended as a substitute for consultation 

with your physician. 

10.    Readings from the right side of the patient’s head may differ from the 

left - therefore it is preferable to take all temperatures on the same 

side of the head.

How does Braun behind ear thermometer work?

Braun behind ear  thermometer is a hand-held, battery powered device 

designed to measure human body temperature with a special sensor that 

accurately and gently detects heat flow through the skin directly behind 

the ear lobe using the heat conduction effect and prediction techniques. 

The thermometer calculates heat flow through the skin and by use of a 

mathematical algorithm estimates the internal body temperature. The 

temperature reading range of the thermometer is from 34°C to 42.2 °C  and 

the reading time is about 1 second.

Why measure behind the ear?

The skin area behind the earlobe is over the posterior auricular artery which 

is a branch of the carotid artery. The carotid artery carries blood to the brain 

and therefore the site is the best external place to measure temperature.

Body temperature

Normal body temperature is not a single number – it’s a range. Many people 

incorrectly believe that 37°C  is the only normal temperature. Yet, it’s just an 

average number. Each person has their own normal range which fluctuates 

throughout the day. It is, therefore, important to determine your normal 

temperature range. A person’s normal (healthy) temperature range tends to 

decrease with age. 
The following table shows that this normal range also varies by the 

measurement site. Therefore, readings from different sites should not be 

directly compared.

Normal temperature ranges by site:

Axillary:  

34.7 – 37.3 °C  

Oral:  

35.5 – 37.5 °C  

Rectal:  

36.6 – 38.0 °C  

Ear:  

35.8 – 38.0 °C  

Behind ear:  

35.0 – 37.6 °C  

Practice taking temperatures on yourself and family members to determine 

their normal temperature ranges.