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About Ear Thermometers
All objects radiate heat. To measure body temperature, this ear thermometer uses an infrared sensor incorporated in its probe to detect the heat radiated from the eardrum and the area around it. In general the ear canal (external auditory canal) of an infant is relatively straight.
As we grow older, it takes on some curvature, as shown in Fig. 2. It is important to point the probe lens of the ear thermometer toward the eardrum and its periphery inside the ear. To straighten the ear canal, gently pull on the outer ear in the direction of the rear of the head, as shown in Fig.
3.Each ear canal has a slightly different shape, be sure to check it before taking temperature readings. Insert the probe straight into the ear canal, as shown in Fig. 4.
Fig.2 | Fig.3 | Fig.4 |
Caution
1.A person’s left and right ear canals are not necessarily symmetrical. This may cause different measurement results. Always take temperature readings in the same ear.
2.A soiled probe lens will result in inaccurate measurement. Be sure to check that the probe lens is clean before use.
3.Body temperature rises after vigorous exercise, a bath or shower, or eating. Wait at least 30 minutes before taking temperature readings.
4.Do NOT use the ear thermometer when the ear canal is wet (after swimming, bathing, etc.).
5.Let the ear thermometer stand at room temperature before use.
6.It is important to know your normal temperature so you can compare it to the measurement result.