Major Applications And Scope Of Application; Environment Requirements; Principle - ToronTek E400 User Instructions

2.2. Major Applications and Scope of Application

The Pulse Oximeter can be used to measure the pulse oxygen saturation and pulse rate through a finger.
The device is suitable for use in the home, hospitals, oxygen bar, community health care, and physical
care in sports (it can be used before or after doing sports and is not recommended to be used during
sporting activities).
The problem of overrating will emerge if the patient is suffering from toxicosis caused by
carbon monoxide. The device is not recommended to be used under these circumstances.

2.3. Environment requirements

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

3. Principle

Operation principle of the Oximeter: Photoelectric Oxyhemoglobin Inspection Technology is applied
together with Capacity Pulse Scanning & Recording Technology so that two beams of light of different
wavelengths can be focused onto a human nail tip through a perspective clamp finger sensor. A measured
signal is obtained by a photosensitive element and acquired information will be shown on-screen through
treatment in electronic circuits and microprocessors. calculation of blood oxygen level the device uses a
formula to process the data according to Lambert Beer Law and Spectrum Absorption Characteristics of
Reductive Hemoglobin (Hb) and Oxyhemoglobin (HbO2) in glow & near-infrared zones.
TORONTEK-E400 Pulse Oximeter
Figure 1
3