LIGHTMAN

®

SpO2 Sensor Tester  -  micro spectrometer

accurate data for clinical decisions

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1.   Red & Infra Red spectra are showing no evidence of faults.

2.   Early signs of IR LED failure. The IR spectrum has shifted 10nm.  Accuracy on safe limit ± 1.0%
Sensor is not compromising patient data.

3.  Increased signs of IR LED ageing. The IR Spectrum has shifted 25nm.  Accuracy is now down to ± 2.5%.
Sensor is now compromising patient data.

4.  The IR LED is in the terminal stage.  The IR spectrum has shifted 35nm. Accuracy is now down to ± 3.5%.
Sensor may be seriously compromising patient data.

*** The degree of decay in IR LEDs in graph 4. will be masked by the pulse oximeter system.   The result is seriously compromised data ***

Age related decay of Infrared LEDs