PULOX PO-200 Manual De Instrucciones página 23

3. Principle
3.1 Principle of Measurement
Principle of the Oximeter is as follows: An experience formula of data
process is established taking use of Lambert Beer Law according to
Spectrum Absorption Characteristics of Reductive Hemoglobin (Hb)
and Oxyhemoglobin (HbO2) in glow & near-infrared zones. Operation
principle of the device is: Photoelectric Oxyhemoglobin Inspection
Technology is adopted in accordance with Capacity Pulse Scanning &
Recording Technology, so that two beams of different wavelength of
lights can be focused onto human nail tip through perspective clamp
finger-type sensor. Then measured signal can be obtained by a
photosensitive element, information acquired through which will be
shown on screen through treatment in electronic circuits and
microprocessor.
3.2 Caution
1. The finger should be placed properly (see the attached
illustration of this manual, Figure 5), or else it may cause
inaccurate measurement.
2. The SpO
arranged in a way with the subject's arteriole in a position
there between ．
3. The SpO
with arterial canal or blood pressure cuff or receiving
intravenous injection.
4. Make sure the optical path is free from any optical obstacles
like rubberized fabric.
5. Excessive ambient light may affect the measuring result. It
includes fluorescent lamp, dual ruby light, infrared heater,
direct sunlight and etc.
6. Strenuous action of the subject or extreme electrosurgical
sensor and photoelectric receiving tube should be
2
sensor should not be used at a location or limb tied
2
Figure 1
EN