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All Journal Spektra: Jurnal Fisika dan Aplikasinya
Bernadus Bisma Titis Restu Aji
D3 Metrology and Instrumentation, Academy of Metrology and Instrumentation, Jalan Daeng M. Ardiwinata km 3,4 Cihanjuang, Bandung Barat 40559, Indonesia
Aerospace Engineering Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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MEASURING INSTRUMENT FOR REFILLED DRINKING WATER USING A TDS SENSOR Dudi Adi Firmansyah; Kamila Rofa Khairunnisa Ibadurrohman; Bernadus Bisma Titis Restu Aji; Suprijanto Suprijanto
Spektra: Jurnal Fisika dan Aplikasinya Vol 5 No 2 (2020): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 5 Issue 2, August 2020
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.052.07

Abstract

Water is an essential need for humans and consumed as drinking water after fulfilling the health requirement in the Republic of Indonesia Minister of Health Regulation No.492/Menkes/Per/IV/2010. Due to the increasing demand, there are currently many refilled drinking water stores as an economical and practical alternative way to people. However, their safety still needs to be tested in the laboratory. This condition is impractical so that it needs a portable measuring instrument especially based on the TDS sensor that can measure the total dissolved solids (TDS) and electrical conductivity (EC) at once, which determines the taste and safety of the water. TDS sensor calibration at 80.5 to 966 ppm shows a 93.4% accuracy; 99.8% precision and 1.3 ppm hysteresis. In comparison, EC calibration at 161 to 1932 microsiemens/cm produces an average of 82.3% accuracy, 97.1% precision, and 1.0 microsiemens/cm hysteresis. This prototype is then employed to measure the water sample and determine its safety to consume and observed a decreasing trend of TDS and EC (194.1 ppm and 388.2 microsiemens/cm) as compared to the water spring sample (20.2 ppm and 402.3 microsiemens/cm). The prototype also has a Bluetooth module that enabling the remote observation on a cell phone without the presence of a telephone network.
Co-Authors Dudi Adi Firmansyah Kamila Rofa Khairunnisa Ibadurrohman Suprijanto Suprijanto