This article provides an experimental assessment of three commercially
available clinical thermometers, using different thermal infrared sen
sors. This kind of thermometer measures body temperature by detecting
infrared radiation from the tympanic membrane. These thermometers are
growing in popularity thanks to their simplicity of use, rapid respons
e and minimal distress to the patient. The purpose of the laboratory t
ests presented here was to assess the effect of varying ambient temper
ature and varying simulated patient temperature on the performance of
the three infrared tympanic thermometers.