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2.4 Environment Requirements
Storage Environment
a. Temperature : -40°C ~+60°C
b. Relative humidity : ≤95%
c. Atmospheric pressure : 500hPa~1060hPa
Operating Environment
a. Temperature: 10°C ~40°C
b. Relative Humidity : ≤75%
c. Atmospheric pressure: 700hPa~1060hPa
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.
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