Braun Thermometer IRT4020 User Manual

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English  
The Braun ThermoScan thermometer has been carefully developed  
for accurate, safe and fast temperature measurements in the ear.  
The shape of the thermometer prevents it from being inserted too far  
into the ear canal to hurt the eardrum.  
However, as with any thermometer, proper technique is critical to  
obtaining accurate temperatures. Therefore, read the use  
instructions carefully and thoroughly.  
Important  
• The operating ambient temperature range for this thermometer  
is 10–40 °C (50–104 °F).  
• Do not expose the thermometer to temperature extremes  
(below –20 °C / –4 °F or over 50 °C / 122 °F) nor excessive humidity  
(> 95 % RH).  
• This thermometer must only be used with genuine Braun  
ThermoScan Lens Filters (LF 40). Never use this thermometer  
without a new, clean lens filter attached.  
• Keep lens filters out of reach of children.  
• This thermometer is intended for household use only.  
• Use of this thermometer is not intended as a substitute for con-  
sultation with your physician.  
How does Braun ThermoScan work?  
Braun ThermoScan measures the infrared heat generated by the  
eardrum and surrounding tissues. To avoid gross temperature dif-  
ferences, the sensor itself is brought to a temperature close to that of  
the human body. When the Braun ThermoScan is placed in the ear,  
it continuously monitors the infrared radiation. The measurement will  
be finished and the result is displayed, when an accurate reading can  
be assured.  
Why measure in the ear?  
The goal of thermometry is to measure core body temperature which  
is the temperature of the vital organs. Ear temperatures accurately  
reflect core body temperature, since the eardrum shares blood supply  
with the temperature control center in the brain, the hypothalamus.  
Therefore, changes in body temperature are reflected sooner and more  
accurately in the ear than at other sites.  
• Axillary temperatures only measure skin temperature and therefore,  
are not a reliable indicator of core body temperature.  
• Oral temperatures are influenced by drinking, eating and breathing.  
• Rectal temperatures lag behind changes in core body temperature  
and there is a risk of cross-contamination.  
4
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Body temperature  
Normal body temperature is a range. The following table shows  
that this normal range also varies by site. Therefore, readings from  
different sites should not be directly compared.  
Normal ranges by site:  
Axillary:  
Oral:  
34.7 – 37.3 °C  
35.5 – 37.5 °C  
36.6 – 38.0 °C  
35.8 – 38.0 °C  
94.5 – 99.1 °F  
95.9 – 99.5 °F  
97.9 – 100.4 °F  
96.4 – 100.4 °F  
Rectal:  
ThermoScan:  
• As well, a person’s normal temperature range tends to decrease  
with age. The following table shows normal ThermoScan ranges  
by age.  
Normal ThermoScan ranges by age:  
0 – 2 years  
3 – 10 years  
11 – 65 years  
> 65 years  
36.4 – 38.0 °C  
36.1 – 37.8 °C  
35.9 – 37.6 °C  
35.8 – 37.5 °C  
97.5 – 100.4 °F  
97.0 – 100.0 °F  
96.6 – 99.7 °F  
96.4 – 99.5 °F  
However, the range of normal also varies from person to person  
and fluctuates throughout the day. It is therefore important to deter-  
mine your normal temperature range. This is easily done using Braun  
ThermoScan. Practice taking temperatures on yourself and healthy  
family members to determine their normal temperature ranges.  
Note: When consulting your physician, communicate that the  
ThermoScan temperature is a temperature measured in the ear and  
if possible, note the individual’s normal ThermoScan temperature  
range as additional reference.  
5
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Product description  
1. Lens filter  
2. Probe  
3. Lens filter detector  
4. Lens filter ejector  
5. Display  
6. «I/O» button  
(On/memory function – IRT 4520 only)  
7. «ExacTemp» light  
8. «start» button  
9. Battery door  
10. Protective cover (IRT 4520)  
11. Cap (IRT 4020)  
How to use your Braun ThermoScan?  
1. To achieve accurate readings, make sure a new,  
clean lens filter (1) is in place before each  
measurement.  
start  
2. IRT 4020: Push the «start» button (8).  
IRT 4520: Push the «I/O» button (6).  
IRT 4520  
IRT 4020  
During an internal self-check, the display shows  
all segments. Then the last temperature taken will  
be displayed together with «MEM».  
Wait for the ready signal beep and the ready  
symbol in the display.  
3. Fit the probe snuggly into the ear canal, then push  
the «start» button (8).  
T
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6
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If the probe has been fitted securely into the ear  
canal during the complete measuring process,  
a long beep will signal the end of the measuring  
process. You can be assured to have taken an  
accurate temperature reading. The result is shown  
on the display (5).  
If you take the temperature of another person, the  
«ExacTemp» light (7) will be of help. It flashes  
during the measuring process as long as the  
probe is securely positioned, and lights up con-  
tinuously when an accurate reading has been  
taken.  
4. If the probe has not been constantly placed in a  
stable position in the ear canal, a sequence of  
short beeps will sound, the «ExacTemp» light will  
go out and the display will show an error message  
(«POS» = position error).  
5. For the next measurement, eject the used lens  
filter (push ejector (4)) and put on a new, clean lens  
filter.  
IRT 4020: Clear the display by pushing the  
«start» button once.  
IRT 4520: Clear the display by pushing the  
«I/O» button once.  
Wait for the ready signal. Fit the probe snuggly  
into the ear canal, then push the «start» button.  
The Braun ThermoScan ear thermometer turns off  
automatically after 60 seconds of inactivity.  
The IRT 4520 can also be turned off by pressing  
the «I/O» button for at least three seconds.  
The display will shortly flash «OFF» and after  
releasing the button it will go blank.  
Temperature taking hints  
• The right ear reading may differ from the reading  
taken at the left ear. Therefore, always take the  
temperature in the same ear.  
• The ear must be free from obstructions or excess  
earwax build-up to take an accurate reading.  
• External factors may influence ear temperatures,  
including when an individual has:  
– been lying on one ear or the other  
– had their ears covered  
– been exposed to very hot or very cold tempera-  
tures, or  
– been recently swimming or bathing.  
7
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In these cases, remove the individual from the  
situation and wait 20 minutes prior to taking a  
temperature.  
• Use the untreated ear if prescription ear drops or  
other ear medications have been placed in the ear  
canal.  
Memory mode  
The last temperature taken is stored in its memory  
and will be automatically displayed when it is turned  
on again. The display will show «MEM».  
IRT 4520:  
This model stores the last 8 temperature readings.  
To display the stored readings, the thermometer  
must be turned on. Then press the «I/O» button for  
at least 1 second. The display shows the memory  
number (e. g. MEM 1), and when releasing the  
«I/O» button, the stored temperature for that memory  
number is displayed, together with «MEM».  
If «I/O» button is pressed too long, the thermometer  
will be switched off. Each further pressing of the  
«I/O» button displays the remaining memory numbers  
(up to MEM 8).  
MEM 1 is the latest reading, MEM 8 would be the  
oldest.  
The memory mode is left automatically after  
displaying the oldest reading, or after pressing the  
«I/O» button for at least 1 second.  
8
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Care and cleaning  
The probe tip is the most delicate part of the  
thermometer. It has to be clean and intact to ensure  
accurate readings.  
If the thermometer is ever accidentally used without  
a lens filter, clean the probe tip as follows:  
Very gently wipe the surface with a cotton swab or  
soft cloth moistened with alcohol. After the alcohol  
has completely dried out, you can put a new lens  
filter on and measure. If the probe tip is damaged,  
contact Braun.  
Use a soft, dry cloth to clean the thermometer display  
and exterior. Do not use abrasive cleaners. Never  
submerge this thermometer in water or any other  
liquid.  
Store thermometer and lens filters in a dry location  
free from dust and contamination and away from  
direct sunlight.  
Additional lens filters (LF 40) are available at most  
stores carrying Braun ThermoScan or at Braun  
Service Centers.  
9
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Trouble-shooting  
Situation  
Error message  
Solution  
No lens filter is attached.  
Attach new, clean lens filter.  
The thermometer cannot identify IRT 4020: Clear the display by  
a secure position of the probe.  
An accurate measurement was  
not possible.  
pushing the «start» button once.  
IRT 4520: Clear the display by  
pushing the «I/O» button once.  
Take care that the positioning of  
the probe is correct and remains  
stable.  
POS = position error  
Ambient temperature is not within Allow the thermometer to remain  
the allowed operating range  
(1040 °C or 50104 °F).  
in a room for 30 minutes where  
the temperature is between  
10 and 40 °C or 50 and 104 °F.  
Temperature taken is not within  
Make sure a new, clean lens filter  
typical human temperature range is attached and thermometer is  
(3442.2 °C or 93.2–108 °F).  
properly inserted. Then, take a  
new temperature.  
HI = too high  
LO = too low  
System error – self-check display Wait 1 minute until the thermo-  
flashes continuously and will not meter turns off automatically, then  
be followed by the ready beep  
and the ready symbol.  
turn on again.  
If error persists,  
... reset the thermometer by re-  
moving the batteries and putting  
them back in.  
If error still persists,  
… have the thermometer checked  
at a Braun Customer Service  
Center.  
10  
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Trouble-shooting  
Error message  
Situation  
Solution  
Battery is low, but thermometer  
will still operate correctly.  
Insert new batteries.  
Battery is too low to take correct Insert new batteries.  
temperature readings.  
Do you have any further  
questions?  
Call Braun Infoline,  
please see page 2.  
Replacing the batteries  
The thermometer is supplied with two 1.5 V type AA (LR 06). For best  
performance, we recommend Duracell® alkaline batteries.  
2
Ther  
moScan  
Insert new batteries when the battery symbol appears on the display.  
Open the battery compartment. Remove the batteries and replace with  
new batteries, making sure the poles are in the right direction.  
Slide battery door back until it snaps in place.  
1
To protect the environment, dispose of empty batteries at  
your retail store or at appropriate collection sites according to  
national or local regulations.  
Calibration  
The thermometer is initially calibrated at the time of manufacture.  
If this thermometer is used according to the use instructions, periodic  
re-adjustment is not required. If at any time you question the accuracy  
of measurement, please contact Braun Infoline, phone (see page 2).  
Manufacturing date is given by the LOT number located in the battery  
compartment. The first number after LOT represents the last digit of the  
year of manufacture.  
The next three digits give the day of the year of manufacture.  
An example: LOT 0116 xx xx – this product has been manufactured on  
the 116th day of the year 2000.  
11  
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Product specifications  
Displayed temperature range:  
Operating ambient temperature range:  
Display resolution:  
34–42.2 °C (93.2–108 °F)  
10–40 °C (50–104 °F)  
0.1 °C or °F  
Accuracy for displayed temperature range:  
0.2 °C (35.5–42 °C / 95.9–107.6 °F)  
0.3 °C (outside this temperature range)  
Clinical repeatability:  
Battery life:  
0.14 °C ( 0.26 °F)  
2 years / 1000 measurements  
Type BF equipment  
Subject to change without notice.  
This appliance conforms to the following standards:  
DIN EN 60601-1: 3/96 «Medical electrical equipment» –  
Part 1: General requirements for safety  
DIN-EN 12470-5: 2003 «Clinical thermometers» –  
Part 5: Performance of infrared ear thermometers (with maximum device)  
This product conforms to the provisions of the EC directive 93/42/EEC  
(Medical Device Directive).  
0297  
MEDICAL ELECTRICAL EQUIPMENT needs special precautions regarding EMC. For  
detailed description of EMC requirements please contact the Braun Infoline (see page 2).  
Portable and mobile RF communications equipment can affect MEDICAL ELECTRICAL  
EQUIPMENT.  
Guarantee  
We grant 1 year guarantee on the product commencing on the date of purchase. Within the  
guarantee period we will eliminate, free of charge, any defects in the appliance resulting from  
faults in materials or workmanship, either by repairing or replacing the complete appliance as we  
may choose.  
This guarantee extends to every country where this appliance is supplied by Braun or its  
appointed distributor.  
This guarantee does not cover: damage due to improper use, normal wear or use as well as  
defects that have a negligible effect on the value or operation of the appliance. The guarantee  
becomes void if repairs are undertaken by unauthorised persons and if original Braun parts are  
not used.  
To obtain service within the guarantee period, hand in or send the complete appliance with your  
sales receipt to an authorised Braun Customer Service Centre.  
For UK only:  
This guarantee in no way affects your rights under statutory law.  
12  
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14  
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start  
IRT 4020  
IRT 4520  
T
moS
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16  
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17  
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18  
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19  
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2
Ther  
moScan  
1
20  
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0297  
21  
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Body temperature  
• Normal body temperature is a range. The following table shows  
that this normal range also varies by site. Therefore, readings from  
different sites should not be directly compared.  
° C  
Normal ranges by site:  
38.5  
38  
Axillary1:  
Oral1:  
34.7 °C – 37.3 °C  
35.5 °C – 37.5 °C  
36.6 °C – 38.0 °C  
35.8 °C – 38.0 °C  
94.5 – 99.1 °F  
95.9 – 99.5 °F  
97.9 – 100.4 °F  
96.4 – 100.4 °F  
37.5  
37  
Rectal1:  
ThermoScan2:  
36.5  
35.5  
35  
• However, the range of normal also varies from person to person  
and fluctuates throughout the day. It is therefore important to  
determine your and your family members' normal temperature  
ranges. This is easily done using Braun ThermoScan. Practise  
taking temperatures on yourself and healthy family members to  
determine their normal temperature ranges.  
34.5  
Family  
Member  
Date  
8:00 h  
12:00 h  
16:00 h  
Note: When consulting your physician, communicate that the  
ThermoScan temperature is a temperature measured in the ear and  
if possible, note the individual's normal ThermoScan temperature  
range as an additional reference.  
In case of questions, call Braun Infoline.  
1 Chamberlain, J. M. Terndrup, T. E., New Light on Thermometer Readings,  
Contemporary Pediatrics, March 1994.  
2 Chamberlain, J. M., et al., Determination of Normal Ear Temperature with an Infrared  
Emission Detection Thermometer; Annals of Emergency Medicine, January 1995.  
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How to use Braun ThermoScan  
GB  
1.  
To achieve accurate readings, make sure a  
new, clean lens filter is in place before each  
measurement.  
2.  
IRT 4020: Push the «start» button.  
IRT 4520: Push the «I/O» button.  
Then wait for the ready signal beep and the ready  
symbol in the display.  
3.  
Fit the probe snuggly into the ear canal, then push  
the «start» button.  
4.  
If the probe has been positioned securely into  
the ear canal during the complete measuring  
process, a long beep will signal the end of the  
measuring process. You can be assured to have  
taken an accurate temperature reading. The  
result is shown on the display.  
If you take the temperature of another person, the  
«ExacTemp» light can be of help. It flashes during  
the measuring process as long as the probe is  
securely positioned, and lights up continuously  
when an accurate reading has been taken.  
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° C  
38.5  
38  
37.5  
37  
36.5  
35.5  
35  
34.5  
1 Chamberlain, J. M. Terndrup, T. E., New Light on Thermometer Readings,  
Contemporary Pediatrics, March 1994.  
2 Chamberlain, J. M., et al., Determination of Normal Ear Temperature with an Infrared  
Emission Detection Thermometer; Annals of Emergency Medicine, January 1995.  
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