How The Accutemp Ir Measures Arterial Temperature (Adults/Pediatrics) - Datascope Accutorr Plus Service Manual

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How the AccuTemp IR Measures Arterial Temperature (Adults/
Pediatrics)
The AccuTemp IR is a self-calibrating infrared ear thermometer that accurately measures
the infrared heat energy radiating from the ear canal opening. The AccuTemp IR
determines the highest temperature in the ear canal opening, measures the ambient
temperature, and then calculates arterial (core) temperature through its patented heat
balance system. This measurement will respond instantly to changes in arterial
temperature without the delays and artifacts inherent in oral and rectal methods, providing
the means to identify a fever faster and more reliably than other methods.
Temperature gradients in the ear canal vary with the amount of environmental exposure,
perfusion patterns, ambient temperature, etc. The least variable and therefore most
accurate is the small deep area of warmest, but still visible tissue. A conventional ear
thermometer takes many readings of the same large area, which includes the high gradient
distal ear tissue, resulting in low, non-reproducible, and inaccurate temperature readings.
The AccuTemp IR utilizes a narrow field-of-view and scanning capability to search the ear
for the small deep area of warmest tissue required for heat balance calculation to ensure
highly accurate and reproducible arterial temperatures.
The temperature measurement will remain on the display for a minimum of 55 and a
maximum of 65 seconds after the Start button is released. If using the AccuTemp IR with
and Accutorr Plus, the temperature measurement can be transferred from the AccuTemp
IR to the Accutorr Plus for display and entry in to the trend database, by placing the
AccuTemp IR in its holder within the 60 seconds after releasing the Start button. A beep
tone is sounded from the Accutorr Plus once the temperature measurement information
has been received by the Accutorr Plus.
NOTE: Do not change Room Number and /or Bed Letter
on the Accutorr Plus during the transmission of
temperature data.
The AccuTemp IR can be used to take temperature measurements for up to 128 power
cycles without having to be put back into its holder. After 128 power cycles, the
AccuTemp IR must be put back into the holder to be reset. When the 129th power cycle is
reached and the Start button is pressed, 4 L's are displayed, indicating that the AccuTemp
IR is locked and must be returned to its holder.
NOTE: The AccuTemp IR thermometer should be at room
temperature when it is used. If it has been in a
very warm or very cold environment it may need
time for the thermometer temperature to equalize
to ambient temperature.
or call 1-800-674-3655
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Repair Information
Accutorr Plus Service Manual