Abstract
Dissolved oxygen (DO) is an important index to evaluate water quality, and its concentration is of great significance in various applications. In the present work, a low-cost Network-Enabled DO sensor using a galvanic probe with a simplified design is studied compared to high-end counterparts. A Nanobubble machine was used to vary the DO, and following which the DO was measured. For comparison, certified DO sensors (YSI) are also used. There was no significant difference in the measured DO between the certified and low-cost DO sensors. The calculated average error was found to be ± 0.6 mg/L which is encouraging to use of low-cost Network-Enabled DO sensors.
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