EN
2.2 Features
A.
Operation of the product is simple and convenient.
B.
The product is small in volume, light in weight (total weight is about 50 g including batteries) and
convenient in carrying.
C.
Power consumption of the product is low and the two originally equipped AAA batteries can be
operated continuously for 20 hours.
D.
The product will enter standby mode when no signal is in the product within 5 seconds.
E.
Display direction can be changed automatically,easy to view.
2.3 Major Applications and Scope of Application
The Pulse Oximeter can be used in measuring the pulse oxygen saturation and pulse rate through finger.
The product is suitable for being used in family, hospital, oxygen bar, community healthcare, physical
care in sports (It can be used before or after doing sports and it is not recommended to use the device
during the process of having sport) and etc.
The product is not suitable for use in continuous supervision for patients.
The problem of overrating would emerge when the patient is suffering from toxicosis which
caused by carbon monoxide, the device is not recommended to be used under this circumstance.
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.
Figure 1
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
2
sensor and photoelectric receiving tube should be arranged in a way with the subject’s
arteriole in a position there between
．
3.
The SpO
2
sensor should not be used at a location or limb tied 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 interference may also affect the accuracy.
7.
Testee can not use enamel or other makeup.