Chapter 2: Intended Use and General Information
2-2 UT100 Handheld Pulse Oximeter Operation Manual
• Three measuring modes:
Spot-Check mode: Measure data intermittently.
Monitor mode: Measure and store data continuously.
Record mode: Measure and store data in energy-save mode.
•
Adjustable volume (including silence) “beep” sounds with each pulse beat.
• Positive identification of SpO
2
or pulse rate alarm. Adjustable high and low
alarm limits for
SpO
2
and pulse rate
measurements.
• Adjustable volume for alarm and alert tones (including silence).
• Low battery icon flashes when about 15 minutes of battery use remains. A
red high priority alarm information
turns on the alarm bar and an audible
two groups of 5-beep burst notifies the user low battery life.
• Patient information management
. Patient’s information such as ID, Sex, Type
can be managed.
• Data can be transferred to PC through a data line for storage, review and
analysis.
2.3 Theory of Operation
The pulse oximeter determines %SpO
2
and pulse rate by passing two
wavelengths of low intensity light, one red and one infrared, through body
tissue to a photodetector. Information about wavelength range can be
especially useful to clinicians. Wavelength information for this device can be
found in the
SpO
2
Specifications
section of this manual.
Pulse identification is accomplished by using plethysmographic techniques,
and oxygen saturation measurements are determined using
spectrophotometric oximetry principles. During measurement, the signal
strength resulting from each light source depends on the color and
thickness of the body tissue, the sensor placement, the intensity of the
light sources, and the absorption of the arterial and venous blood
(including the time varying effects of the pulse) in the body tissues.
