“With the continuous improvement and improvement of people’s living standards, the demand for health gradually increases, and oxygen inhalation will gradually become a means of rehabilitation in families and communities. The following editor will tell you about the application solution of gas flow sensor in oxygen generator flow monitoring through this article.
With the continuous improvement and improvement of people’s living standards, the demand for health has gradually increased, and oxygen inhalation will gradually become a means of rehabilitation in families and communities. The following editor will tell you about the application solution of gas flow sensor in oxygen generator flow monitoring through this article.
The oxygen generator uses molecular sieve physical adsorption and desorption technology to adsorb nitrogen in the air and obtain high-purity oxygen after purification. In oxygen therapy and oxygen rehabilitation, too little oxygen inhalation will not achieve convalescent effect, and excessive oxygen inhalation will cause harm, so it is very important to control the oxygen flow. So what is the relationship between oxygen concentration and oxygen flow?
The relationship between oxygen concentration and oxygen flow: Inhaled oxygen concentration (%) = 21 + 4 * oxygen flow (L/min)
It is worth noting that the current oxygen therapy oxygen health care equipment is roughly divided into health care oxygen machines with an oxygen concentration of 30%-60%, molecular sieve medical oxygen generators with an oxygen concentration of more than 90%, and oxygen cylinders and portable oxygen cylinders with a higher oxygen concentration. . These devices basically rely on oxygen masks or nasal oxygen tubes to inhale oxygen, which are open oxygen inhalation, that is, when a person inhales a breath, the amount of oxygen cannot be supplied, and some air (21% oxygen concentration) will be inhaled next to it. The oxygen concentration in the lungs is the oxygen concentration after mixing with air, which is the inspired oxygen concentration.The formula of inspired oxygen concentration and oxygen flow is: inspired oxygen concentration (FiO2) = 21 + 4 * oxygen flow
It can be seen from the above that the function of the oxygen generator is to reduce the nitrogen delivered to the patient’s air while increasing the proportion of oxygen. The oxygen generator is used for patients who cannot absorb oxygen into the blood smoothly, such as some patients with lung diseases. The gas flow sensor used in the oxygen concentrator must be able to measure ultra-low flow. For example, a flow of 0.1 cubic centimeters needs to be measured. The gas flow sensor can be used to detect when the patient exhales, that is, when the air flow should be reduced. Exhale easily and feel comfortable.
For the gas flow sensor of the oxygen generator, the gas mass flow sensor – FS1015 and the American Siargo mass flow sensor module – FS6122 series provided by Xiaobian can be well used in the flow monitoring of the oxygen generator.
Gas Mass Flow Sensor – FS1015 is specially designed for measurement and process control of various medical gases. The product is made of micro-electromechanical system (MEMS) flow sensor chip, which is suitable for all kinds of clean gases. Low cost, easy to install, no need for temperature and pressure compensation, and can replace traditional positive displacement or differential pressure flow meters.
FS1015 series microelectromechanical gas mass flow sensor technical parameters:
US Siargo mass flow sensor module – FS6122 series is a flow sensor specially designed for breathing circuits such as emergency ventilators and home ventilators. Products are available in different flow ranges for infant and adult applications. The mechanical interface of the product is ISO-22mm, and the air inlet and air outlet adopt different designs, which are highly error-proof and reduce the dead zone to a minimum. The proprietary MEMS technology of Sixiang Micro-Electro-Mechanical Systems Co., Ltd. guarantees the reliability and performance of the product, while the price is also very low.
Mass flow sensor module FS6122 series flow signal: