VisioFocus PRO 06480 - How the VisioFocus PRO Works; Infrared Measurement Principle

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country.
3. HOW IT WORKS
VisioFocus PRO detects the infrared radiation naturally emitted by the body and, in
particular, from the human forehead.
The forehead is the ideal site for taking a temperature reading because it is crossed
by the temporal artery which receives blood owing from the aorta and carotid artery.
Moreover, the forehead is the only part of the head in direct contact with the brain
that is not covered by hair. The brain is the most important, most delicate organ in the
human body and it is the most susceptible to injury from fever. The head is also the rst
part of the body to change its temperature as a fever rises and falls.
With each temperature measurement, your VisioFocus PRO takes a series of 125
readings a tenth of a second. Its sophisticated microprocessor then amplies and
processes this information along with the room temperature and shows the correct
body temperature through the projection.
Please note that that body temperature varies among individuals: moreo
-
ver, individual temperature varies according to the measurement’s site and
throughout the day, also in response to physical or mental eort (for example
a baby’s crying).
Moreover, the body temperature can be aected by the outside temperature and,
depending on the type of reading taken, other factors may also come into play.
Due to heat dispersion from uncovered parts of the body, the actual temperature
at the forehead is generally lower than that in covered zones. Therefore, when the
“FACE”
button is pressed, the VisioFocus PRO software automatically applies
a correction factor and thus the resulting value is comparable to that given by other
more usual temperature reading sites commonly used in the countries where the unit
is sold - axillary, oral or rectal reading, or internal temperature reading -, according to
the customer’s choice.
Nevertheless, the reference value can be changed. Remember, an “oral” reading is
generally 0,2°C (0.4°F) higher than an axillary reading while a “rectal” or “core” reading
is 0,8°C (1.4°F) higher (see par. #7).
The VisioFocus PRO temperature reading taken on the forehead of a healthy person
can range between 35,0 and 37,5°C (95.0 and 99.5ºF), in axillary mode, although in
an adult it may even be below 35,0°C (95.0°F).