EDAN H100B User Manual - Wavelength

H100B Pulse Oximeter User Manual 

- 69 - 

Wavelength 

The sensor contains LEDs that emit red light at a 

wavelength of approximately 660 nm and infrared light 

at a wavelength of approximately 900 nm. 

7.2 Functional Versus Fractional 

Saturation

This oximeter measures functional 

saturation-oxygenated hemoglobin expressed as a 

percentage of the hemoglobin that can transport oxygen. 

It does not detect significant amounts of dysfunctional 

hemoglobin, such as carboxyhemoglobin or 

methemoglobin. 

In contrast, hemoximeter such as the IL482 report 

fractional saturation-oxygenated hemoglobin expressed 

as a percentage of all measured hemoglobin, including 

measured dysfunctional hemoglobins. 

To compare functional saturation measurements to those 

from an instrument that measures fractional saturation, 

fractional measurements must be converted.