29
Technical Information
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
2
) from this color difference by measuring the ratio of
absorbed red and infrared light as volume fluctuates with each pulse.
Specifications
This device is not made with natural rubber latex.
Oxygen Saturation Display Range
0 to 100% SpO
2
Pulse Rate Display Range
18 to 321 beats per minute (BPM)
Accuracy – Sensors
Declared accuracy data for compatible sensors can be
found in Nonin’s Sensor Accuracy document.
Measurement Wavelengths and Output Power*
Red: 660 nanometers @ 0.8 mW max. avg.
Infrared: 910 nanometers @ 1.2 mW max. avg.
Indicators
Pulse Quality Display: LED, tricolor
Numeric Displays: 3-digit 7-segment LEDs, red
Low Battery Indicator: LED, amber
Temperature (Operating)
-20 to +50 °C (-4 to +122 °F)
Temperature (Storage/Transportation): -30 to +50 °C (-22 to +122 °F)
Humidity (Operating)
10 to 95% noncondensing
Humidity (Storage/Transportation): 10 to 95% noncondensing
Altitude (Operating)
Up to 12,000 meters (40,000 feet)
Altitude (Hyperbaric Pressure): Up to 4 atmospheres
Power Requirements
Four 1.5V AA-size alkaline batteries (80 hours typical
operation) or NiMH rechargeable battery pack (40 hours
typical operation)
Dimensions
13.8 cm H x 7.0 cm W x 3.2 cm D
(5.4 in H x 2.8 in W x 1.3 in D)
Weight
210 g (7.4 oz) (with alkaline batteries)
230 g (8.1 oz) (with NiMH rechargeable battery pack)
Classifications per IEC 60601-1 / CAN/CSA-C22.2 No. 601.1 / UL60601-1
Type of Protection: Internally powered (on battery power)
Degree of Protection: Type BF-Applied Part
Mode of Operation: Continuous
Enclosure Degree of Ingress Protection
IP32
* This information is especially useful for clinicians performing photodynamic therapy.
