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9.
Some Useful Information
How the No-Touch Forehead Thermometer Works
This unit measures the temperature at the surface of the forehead by sensing infrared emission of the skin at the measured
point, and then calculates the oral-equivalent value using a unique algorithm based on actual body temperature survey data.
About Body Temperature
Body temperature
refers to the stable temperature of the inner body (also known as
core body temperature
). While
temperature measurements at the armpit or mouth provides surface temperature values, holding the thermometer steadily at
the measurement point for approx. 10 minutes provides a temperature measurement more closely representing that of core
body temperature.
Since forehead temperature measurement involves no bodily support of the thermometer, the resulting measured
temperature is typically lower than that of the armpit or mouth.
However, since the forehead has blood vessels that are much less prone to vascular constriction (a natural function of body
temperature adjustment), it is supposedly a better measurement area for determining core body temperature, even in a lower
temperature environment. By contrast, temperature measured at the arm or leg, for example, is not a suitable gauge of core
body temperature, since such body areas are more subject to vascular constriction.
(Note that temperature measured at the forehead may still be influenced by other conditions, such as sweating, or wind from
an air conditioner, etc. It is therefore advised to perform measurement in as stable an environment as possible.)
When measuring the temperature of an infant, note that infant body temperature is generally higher than adult body
temperature and easily affected by external factors. For example, body temperature tends to increase after nursing or crying.
Therefore, it is recommended to take measurements with the infant in calm and normal condition.
