Performance and Error Analysis for Automatic Measurement Device of Dissolved Oxygen

Abstract:

Dissolved oxygen (DO) is an important index of water environmental monitoring, to which accurate and rapid determination is of great significance. The automatic DO measurement device, which was launched by Core Company, is able to fast and batch determinate dissolved oxygen in water. Based on this advantage, this study further evaluated the performance of the dissolved oxygen meter as well as analyzed the precision and accuracy of dissolved oxygen determination in different water bodies using mathematical statistics method. The results show that the automatic DO measurement device completely meets the requirements of the national DO automatic analyzer. The instrumental measurement results show high precision and accuracy in different water bodies in addition to the industrial waste water and they keep in line with the traditional iodometry determination results. Experiments of parallel determination of pure water of saturation dissolved oxygen make clear that the determination values of the four electrodes of the apparatus have no significant difference.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 693-702
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.693
• Online since: February 2013
• Authors: Wei Lin Li, Zhi Wang, Hai Yang Fang, Jian Hua Li, Li Min Gao, Jun Bin Ni
• Keywords: Automatic DO Measurement Device, Error Analysis, Mathematical Statistics, Performance Evaluation

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