PULSE OXIMETER-Tureillusion

◆The finger clip type pulse oximeter (hereinafter referred toas the oximeter) has the advantages of small volume, low power consumption, simple operation and convenientcarrying. When measuring, as long as the finger is extended into the finger clamp photoelectric sensor, the display screen will directly display the measured blood oxygen saturation value.

◆Measurement principle

The measurement principle of the oximeter is based on the spectral characteristics of hemoglobin and oxyhemoglobin with different absorption rates in the red and infrared light areas, and the empirical formula of data is established by using "lamert beer" law. The working principle of the instrument is to use photoelectric blood oxygen detection technology combined with volume pulse tracing technology.

Two different wavelengths of light (660nm red light and 940nm near-infrared light) are used to irradiate the fingernail of human body through absorption perspective clip sensor, and the measurement signal is obtained by the photosensi tive element. The obtained information is displayed on the display after the electronic circuit and microprocessor, which is easy to read. It is composed of double-layer components and photoelectric detector. Bone, cell tissue, pigmentation and vein vessels all have different absorption constants of light. When the artery pulsates with the heart's contraction and

relaxation, the absorption of light will be different with the increase and decrease of blood flow. The absorptivity of different light during diastole and contraction of the heart is transformed into the measurement result of blood oxygen saturation. This measurement is the oxygen saturation.

◆Product features

1.The product adopts LCD hd display, and the interface can display four different display modes;

2.The power consumption of the product is low, and the two AAA batteries can be used for more than 15 hours;

3.When the battery voltage is too low which may affect normal use, there is a low voltage warning indication;

4.When no signal, the product will enter the shutdown state after 8 seconds;

5.Small size, light weight and very easy to carry

1. Display mode: LCD four color display

2. Pulse oxygen saturation display range: 35% - 100%

3. Blood oxygen saturation: measurement accuracy: within the range of 70% - 99% ± 2%, < 70%, no definition of accuracy

Resolution: blood oxygen saturation ± 1%

4. Pulse rate: 25bpm ～ 250bpm

Measurement accuracy: ± 1bpm or ± 1% of the measured value (whichever is greater)

5. Battery model: 2 AAA 1.5V alkaline batteries;

6. Automatic shutdown: when no finger is inserted, it will be automatically shutdown after 8 seconds

7. Boundary dimension: 58mm × 32mm × 34mm

8. Operating environment: operating temperature: 5 ℃ ~ 40 ℃

Storage temperature: - 10 ℃ ~ 40 ℃

Environmental humidity: 15% - 80% storage when working

Atmospheric pressure: 70kpa ～ 106kpa

9. Declaration: EMC of this product complies with iec60601-1-1-2 standard.

10. Pulse wave measurement sensitivity under the condition of weak perfusion: the necessary test equipment (bio-tek index pulse oximeter) can measure the available pulse wave signal whose amplitude is 6% of the amplitude of analog pulse wave signal.

11. Anti environment light interference ability: apply interference signal test with bio-tek index pulse oximeter tester, the instrument can work normally