Performance Specifications; General; Interfering Substances; Sensor Emitter Wavelength Ranges - Datex-Ohmeda TuffSat User's Manual And Service Manual

4/Compliance and Specifications
Performance specifications
Unless otherwise indicated, all specifications are nominal and are subject to
change without notice.
General
Total operational time: approximately 17 to 20 hours at room temperature using
alkaline batteries
Microprocessor-controlled device
Automatic self-test at power on
Automatic/continuous system diagnostics
Sp02
Calibration: functional
Range: 0 to 100%
Accuracy (+ 1 standard deviation):
80 to 100% + 2%
60 to 79% + 3%
Below 60% unspecified
First reading (full accuracy):
< 12 seconds from power on
< 10 seconds while oximeter is on
Interfering substances
Carboxyhemoglobin may erroneously increase readings in all pulse oximeters. The
level of increase is approximately equal to the amount of carboxyhemoglobin
present. Cigarette smokers and victims of smoke inhalation often have increased
levels of carboxyhemoglobin. Dyes that change usual arterial pigmentation, or
substances containing dyes, may also cause erroneous readings.
Sensor emitter wavelength ranges
Red LED peak wavelength range: 650 to 665 nm
Infrared (IR) LED peak wavelength range: 930 to 950 nm
Average power: < 1 mW
Pulse rate
Range: 40 to 255 beats per minute (bpm)
Accuracy, assuming a constant pulse rate (+ 1 standard deviation):
40 to 100: + 2 bpm
100 to 255: + 2%
First reading (accuracy reduced + 5 bpm for < 17 seconds, then full accuracy):
< 12 seconds from power on
< 10 seconds when oximeter is on
Alarms
No alarms (audible or visual) for any situation, including low SpOz and high/low
pulse rate
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