1. Electrochemical sensor detection method
Electrochemical sensor is one of the common methods used by Portable Oxygen Concentrator With Battery to detect oxygen purity. This sensor works based on the redox reaction of oxygen on the electrode surface. There are specific electrode materials and electrolytes inside the sensor. When oxygen molecules diffuse to the electrode surface, they participate in the electrochemical reaction and generate electrical signals related to the oxygen concentration. For example, in some electrochemical sensors, oxygen is reduced by electrons at the cathode, and the corresponding oxidation reaction occurs at the anode. By measuring the current in the circuit, the concentration of oxygen can be determined according to the pre-calibrated relationship, thereby knowing the oxygen purity. This method has high sensitivity and can accurately detect the concentration changes of oxygen within a certain range. It also has a relatively fast response speed and can promptly reflect the fluctuations of oxygen purity.
2. Paramagnetic detection method
Paramagnetic detection is also a feasible method. Oxygen is paramagnetic, that is, it will be attracted in a magnetic field, while most other gases are antimagnetic. The paramagnetic oxygen purity detection instrument uses this characteristic to introduce a mixed gas containing oxygen into a magnetic field, and determines the oxygen content by detecting the force or magnetic changes of the gas in the magnetic field. In the Portable Oxygen Concentrator With Battery, this method can accurately measure the purity of oxygen. Its advantages are high measurement accuracy, good linearity of response to changes in oxygen concentration, and relatively little interference from other gases. However, the structure of the paramagnetic detection instrument is relatively complex and the cost is also high, which to a certain extent limits its wide application in some low-cost portable devices, but it is still a reliable detection method for medical equipment with high requirements for oxygen purity.
3. Optical detection method
Optical detection methods are also used in oxygen purity detection. For example, the change in optical properties of certain substances after reacting with oxygen is used to detect oxygen purity. Some materials will change the fluorescence intensity or change the light absorption characteristics when they come into contact with oxygen. By setting up an optical detection system in the Portable Oxygen Concentrator With Battery, irradiating the detection substance with light of a specific wavelength, and then measuring the change in the light signal, the purity of oxygen can be indirectly obtained. This method has the advantages of non-contact measurement, does not interfere with the oxygen flow, and can achieve continuous monitoring. However, the accuracy of the optical detection method may be affected by environmental factors (such as temperature, humidity, etc.), and proper calibration and compensation are required to ensure the reliability of the detection results.
4. Integrated sensor chip detection
With the development of micro-electromechanical system (MEMS) technology, integrated sensor chips are also used for oxygen purity detection. These chips integrate multiple detection functions on a tiny chip, such as integrating electrochemical detection units, temperature compensation units, etc. In the Portable Oxygen Concentrator With Battery, this integrated sensor chip can achieve accurate detection of oxygen purity in a small space. They are usually characterized by low power consumption, small size and high reliability, which is very suitable for the needs of portable devices. At the same time, the algorithm inside the chip can process and correct the detection data in real time to improve the accuracy of the detection results, and can be easily integrated with the control system of the equipment to achieve effective monitoring and management of oxygen purity.
