Calibration; Assumptions; Methods | 合法醫療器材資訊網

GETuffSatManualOnline:calibration,Assumptions,Methods.Datex-OhmedaPulseOximetersUseTwoWavelengthRanges,650NmTo670NmAnd930Nm​ ...

TuffSat Users Guide and Service Manual

The photodetector sends the electronic signal, which contains the light intensity

information, to the oximeter. The oximeters electronic circuitry processes the

electronic signal, calculates the SpO

the screen.

Datex-Ohmeda pulse oximeters use two wavelength ranges, 650 nm to 670 nm and

930 nm to 950 nm, both with an average power of less than 1 mW. These

wavelengths are used to calculate the presence of oxyhemoglobin (O

reduced hemoglobin (HHb).

A CO-oximeter typically uses four or more wavelengths of light and calculates

reduced hemoglobin (HHb), oxyhemoglobin (O

methemoglobin (MetHb).

Therefore, pulse oximetry readings and CO-oximetry readings will differ in

situation...