动态气体校准仪的准确性探讨

摘要

阐述了在空气自动监测的校准中，气体流量和臭氧输出选择的不同对动态气体校准仪准确性和稳定性的影响。通过比较不同零气流量点得出零气选择高流量点有利于配气输出的准确，同时零气流量提高也可以使标气流量在稳定的范围运行。针对不同校准点臭氧输出的比较，得出低浓度臭氧输出更接近理论值。从流量和臭氧两个方面分析了提高动态气体校准仪准确性的方法。%T he flow‐rate and ozone output have an effect on the accuracy and stability of the dynamic gas calibrator in the automatic monitoring system. The higher flow‐rate is favorable to the accuracy of the zero flow ,it can improve the standard gas flow work on the stability rage at the same time. The lower point of ozone is approached to theoretical value. This parer from both flow and ozone analyzed how to im‐prove the accuracy of the gas calibrator.