Results and analysis of measurement comparison for electrochemical oxygen meter
CHENG Liping, LI Jian, XIA Chun, WANG Shengjia
Qingdao Institute of Measurement Technology, Qingdao 266101, China
Abstract：In order to do a good job in the special veri fication of the electrochemical oxygen meter and strengthen the supervision of veri fication institutions, in 2021, as a pilot laboratory, Qingdao Institute of Measurement Technology organized 11 metrological verification institutions of Shandong to participate in comparison of electrochemical oxygen meter, which had established standard device for electrochemical oxygen meter or standard devices for oxygen analyzer and oxygen detection alarm. Through the effective implementation of the comparison scheme and the statistical calculation of the comparison data, the results of the measurement comparison and the problems existing in the reference laboratories were studied. According to the results of 11 reference laboratories, it was calculated that the absolute value of the En value of all reference laboratories was not more than 1, and the comparison results were satisfactory. However, It was found that there were some problems in experiment operation, data record and uncertainty evaluation in relative reference laboratories. Some pertinent suggestions on the verification of records and certificates, the training of personnel and the study of basic knowledge were put forward.
Keywords：electrochemical oxygen meter; verification device; measurement comparison
CHENG Liping，LI Jian，XIA Chun，et al. Results and analysis of measurement comparison for electrochemical oxygen meter[J]. Chemical Analysis and Meterage，2022，31(7)：73.