Carbon Dioxide Detector's Detection and Analysis of Indoor Carbon Dioxide Content
During the heating period of the classroom, the temperature, humidity, and carbon dioxide concentration in the air were tested and investigated in the field, representative samples were selected, and the collected samples were calculated and analyzed, and the main reasons affecting the air quality were obtained. Concentration of carbon dioxide exceeded, the number of air changes and the overcrowding of classrooms, and solutions were proposed. The process and method of CO2 detector experiment and sample analysis were used to illustrate how to improve the air quality in the classroom and to point out the better state achieved after the improvement, so as to provide a good learning environment and ultimately achieve a good teaching effect.
Research data shows that there are hundreds of indoor pollutants, some of which are very low in concentration, which will not affect human work and learning. In this classroom, the concentration of carbon dioxide is mainly detected. The equipment used was a carbon dioxide detector. SenseAIR's K30 CO2 sensor module uses non-dispersive infrared (GFC) optical measurement technology to accurately and stably measure carbon dioxide concentration, minimizing CO and H2O interference. To ensure the accuracy of the test data, the CO2 detector was calibrated using NO gas and CO2 standard gas with a concentration of 2890 ppm before the test.
According to the provisions of the "Indoor Air Quality Standard" GB/T18883-2002: The number of points to be taken according to the size of the test room and the site conditions, in order to correctly reflect the level of indoor pollutants. In principle, rooms with less than 50m2 should be set up with 1~3 points; 50~100m2 with 3~5 points; and 100m2 with at least 5 points. The classroom under test is larger than 100m2, so choose five collection points and evenly arrange on the diagonal of the room. Take points to avoid vents, the distance from the wall should be greater than 0.5m. The height of the mining site is in principle consistent with the height of the human respiratory belt.
Research data shows that there are hundreds of indoor pollutants, some of which are very low in concentration, which will not affect human work and learning. In this classroom, the concentration of carbon dioxide is mainly detected. The equipment used was a carbon dioxide detector. SenseAIR's K30 CO2 sensor module uses non-dispersive infrared (GFC) optical measurement technology to accurately and stably measure carbon dioxide concentration, minimizing CO and H2O interference. To ensure the accuracy of the test data, the CO2 detector was calibrated using NO gas and CO2 standard gas with a concentration of 2890 ppm before the test.
According to the provisions of the "Indoor Air Quality Standard" GB/T18883-2002: The number of points to be taken according to the size of the test room and the site conditions, in order to correctly reflect the level of indoor pollutants. In principle, rooms with less than 50m2 should be set up with 1~3 points; 50~100m2 with 3~5 points; and 100m2 with at least 5 points. The classroom under test is larger than 100m2, so choose five collection points and evenly arrange on the diagonal of the room. Take points to avoid vents, the distance from the wall should be greater than 0.5m. The height of the mining site is in principle consistent with the height of the human respiratory belt.
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