China has developed a new type of oxygen sensor and oxygen meter
Recently, a new type of oxygen sensor and oxygen measuring instrument with novel structure, small size, low cost, strong stability, long service life, wide detection range and high sensitivity, and independent intellectual property rights have been successfully developed by the Changchun Yinghua Institute of Chinese Academy of Sciences. It passed the expert appraisal organized by the Science and Technology Department of Jilin Province. Experts believe that the new oxygen sensor and oxygen meter have reached the domestic leading level in detecting the oxygen range and sensitivity.
Oxygen analysis and measurement is widely used in many fields such as medicine, biology, industrial energy, and environmental protection. The amount of oxygen sensor is also very large, and the demand for electrochemical oxygen sensors in various industries is basically close to the sum of other types of gas sensors. At the same time, with the increase of people's health awareness in recent years and the strict legislation on toxic gas emissions and pollutant emissions in various countries, various new detection mechanisms of gaseous oxygen or dissolved oxygen monitoring devices have been more and more widely used. In line with this, the new mechanism and new structure of oxygen sensors and testing instruments have quickly become the research and development hotspots in the field of sensors at home and abroad.
In view of the fact that China's current electrochemical oxygen sensors have narrow detection range, sensitivity is not up to the detection index, and the bottlenecks such as large environmental constraints have not yet broken through, the annual situation of having to spend a large amount of foreign exchange to introduce foreign products, the scientific and technical personnel of the Changchun Yinghua Institute of the Chinese Academy of Sciences Taking the country's needs and enhancing the core competitiveness of oxygen sensors as its mission, with the strong support of the Science and Technology Department of Jilin Province, in cooperation with Changchun University, in 2003, it undertook the research on the new oxygen sensor and oxygen measuring instrument of Jilin Province Science and Technology Development Plan Project. And development". In the four years of hard work and joint efforts, they focused on the long-term technical and talent advantages of electrochemical gas sensor research, and insisted on the close integration of applied basic research and research and development, starting from practical application and solving key technologies, and innovative. It has broken through the technical problems of catalyst, split flow control gas diffusion, etc., and has achieved a series of innovative results: the sensor adopts electrochemical three-electrode semi-solid design, novel structure, no consumable substance, long service life; effective with semi-solid and nano-scale catalysts. The sensitivity of the sensor is improved, and the detection limit is up to the PPM level, which further expands the detection range of the oxygen sensor, effectively solves the problem of detecting PPM-level oxygen detection in a gas environment; and broadens the detection by using diffusion barrier shunt control gas diffusion technology The upper limit makes the detection upper limit reach 100%; using Pt-Fe alloy technology not only changes the structure of the catalytic layer, but also greatly improves the activity of the catalyst and improves the sensitivity of the sensor, making it more suitable for the actual detection requirements. Tested by Jilin Province Metrology and Product Quality Supervision Station: indication error and repeatability of low concentration type, 25% normal concentration type and 100% high concentration type three oxygen sensor with range of 500×10-6mol/mol The main technical indicators such as response time, zero drift, and span drift are all meeting or exceeding the standard requirements.
The Changchun Industrial Boiler Factory and the Jilin Province Power System Environmental Testing Center Station reflect the advantages of small size, simple operation, responsiveness, rapid response, stable performance, and short return time. Testing needs in areas such as industry and the environment.
Experts believe that the new sensor has changed the traditional design concept of oxygen gas sensor, providing a new technical means for oxygen detection, and also provides a new way of thinking for other gas detection. And testing needs in areas such as the environment.
Oxygen analysis and measurement is widely used in many fields such as medicine, biology, industrial energy, and environmental protection. The amount of oxygen sensor is also very large, and the demand for electrochemical oxygen sensors in various industries is basically close to the sum of other types of gas sensors. At the same time, with the increase of people's health awareness in recent years and the strict legislation on toxic gas emissions and pollutant emissions in various countries, various new detection mechanisms of gaseous oxygen or dissolved oxygen monitoring devices have been more and more widely used. In line with this, the new mechanism and new structure of oxygen sensors and testing instruments have quickly become the research and development hotspots in the field of sensors at home and abroad.
In view of the fact that China's current electrochemical oxygen sensors have narrow detection range, sensitivity is not up to the detection index, and the bottlenecks such as large environmental constraints have not yet broken through, the annual situation of having to spend a large amount of foreign exchange to introduce foreign products, the scientific and technical personnel of the Changchun Yinghua Institute of the Chinese Academy of Sciences Taking the country's needs and enhancing the core competitiveness of oxygen sensors as its mission, with the strong support of the Science and Technology Department of Jilin Province, in cooperation with Changchun University, in 2003, it undertook the research on the new oxygen sensor and oxygen measuring instrument of Jilin Province Science and Technology Development Plan Project. And development". In the four years of hard work and joint efforts, they focused on the long-term technical and talent advantages of electrochemical gas sensor research, and insisted on the close integration of applied basic research and research and development, starting from practical application and solving key technologies, and innovative. It has broken through the technical problems of catalyst, split flow control gas diffusion, etc., and has achieved a series of innovative results: the sensor adopts electrochemical three-electrode semi-solid design, novel structure, no consumable substance, long service life; effective with semi-solid and nano-scale catalysts. The sensitivity of the sensor is improved, and the detection limit is up to the PPM level, which further expands the detection range of the oxygen sensor, effectively solves the problem of detecting PPM-level oxygen detection in a gas environment; and broadens the detection by using diffusion barrier shunt control gas diffusion technology The upper limit makes the detection upper limit reach 100%; using Pt-Fe alloy technology not only changes the structure of the catalytic layer, but also greatly improves the activity of the catalyst and improves the sensitivity of the sensor, making it more suitable for the actual detection requirements. Tested by Jilin Province Metrology and Product Quality Supervision Station: indication error and repeatability of low concentration type, 25% normal concentration type and 100% high concentration type three oxygen sensor with range of 500×10-6mol/mol The main technical indicators such as response time, zero drift, and span drift are all meeting or exceeding the standard requirements.
The Changchun Industrial Boiler Factory and the Jilin Province Power System Environmental Testing Center Station reflect the advantages of small size, simple operation, responsiveness, rapid response, stable performance, and short return time. Testing needs in areas such as industry and the environment.
Experts believe that the new sensor has changed the traditional design concept of oxygen gas sensor, providing a new technical means for oxygen detection, and also provides a new way of thinking for other gas detection. And testing needs in areas such as the environment.
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