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Principles of Operation
Pulse oximetry is a non-invasive method that passes red and infrared light through perfused tissue and
detects the fluctuating signals caused by arterial pulses. Well-oxygenated blood is bright red, while poorly
oxygenated blood is dark red. The pulse oximeter determines functional oxygen saturation of arterial
hemoglobin (SpO
) from this color difference by measuring the ratio of absorbed red and infrared light
2
as volume fluctuates with each pulse.
Specifications
Oxygen Saturation Display Range
Pulse Rate Display Range
CO
Range
2
CO
Response Time
2
Respiration Rate Range
Breath Detection Threshold
Accuracy – Sensors
CO
Accuracy of Bar Graph Thresholds (A
2
Measurement Wavelengths and Output Power**
Alarm Volume Range:
Indicators
"Audible Alarm Disabled" Indicator: Dedicated icon, yellow
Temperature
* ±1 A
represents approximately 68% of measurements at zero bias.
rms
** This information is especially useful for clinicians performing photodynamic therapy.
48
)* ±25% of reading (typical)
rms
Red: 660 nanometers @ 0.8 mW max. avg.
Infrared: 910 nanometers @ 1.2 mW max. avg.
Pulse Quality Indicator: LED, tricolor
Numeric Displays: 3-digit, 7-segment LEDs, tricolor
CO
Bar Graph: 8-segment bar graph, red
2
Low Battery Indicator: Dedicated icon, yellow
No Breath Indicator: Dedicated icon, red
Audible Indicator: Miniature speaker
Operating: 0 °C to +40 °C (32 °F to +104 °F)
Storage/Transportation: -40 °C to +70 °C (-40 °F to +158 °F)
0% to 100% SpO
2
18 to 321 beats per minute (BPM)
0 to >75mmHg
250 ms
1 to 60 breaths per minute
5 mmHg
Declared accuracy data for compatible sensors can be
found in Nonin's Sensor Accuracy document.
70 – 71 dBA
Technical Information
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