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Sistem sensor untuk pemantauan kadar oksigen terlarut berbasis galvanik pada kolam budidaya ikan air tawar

A galvanic-based dissolved oxygen level monitoring sensor system in freshwater ponds

1Universitas Nahdlatul Ulama Yogyakarta, Indonesia

2Universitas Negeri Yogyakarta, Indonesia

Received: 1 Dec 2020; Revised: 1 Feb 2020; Accepted: 5 Mar 2021; Published: 30 Apr 2021; Available online: 20 Apr 2021.
Open Access Copyright (c) 2021 The Authors. Published by Department of Computer Engineering, Universitas Diponegoro
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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Abstract
This study aims to develop low-cost and environmentally friendly material galvanic-based dissolved oxygen sensors. A Dissolved oxygen (DO) sensor has been designed and fabricated on an 85 x 205 mm galvanic-based. The sensor structure device consists of Al-Zn reference layer electrode, Ag/AgCl active electrode, 120ml KCl electrolyte solvent 0,1 M, and closed by TiO2 membrane (PTFE). The Al-Zn formation reference electrode was done by Ag layer chlorination using FeCl3, and the TiO2 membrane was formed by TiO2 paste screen printing. The test was done to measure the sensor’s performance based on the current-voltage characteristics between 1.0 and 1.8 V. The results showed that a stable diffusion current was obtained when the input voltage was 1.5 V, resulting in the best sensor performance with a sensitivity of 0.7866 μA L/mg and a stable step response time of 3 mins. This prototype sensor showed high potential for prototyping for a low-cost water quality monitoring system.
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Keywords: sensors design; dissolved oxygen; electrode; water; membrane
Funding: DRPM Ditjen Penguatan Risbang melalui skema BOPTN, Indonesia

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Last update: 2021-06-23 13:27:05

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Last update: 2021-06-23 13:27:06

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