MEASURING INSTRUMENT FOR REFILLED DRINKING WATER USING A TDS SENSOR

Authors

  • Dudi Adi Firmansyah D3 Metrology and Instrumentation, Academy of Metrology and Instrumentation, Jalan Daeng M. Ardiwinata km 3,4 Cihanjuang, Bandung Barat 40559, Indonesia
  • Kamila Rofa Khairunnisa Ibadurrohman D3 Metrology and Instrumentation, Academy of Metrology and Instrumentation, Jalan Daeng M. Ardiwinata km 3,4 Cihanjuang, Bandung Barat 40559, Indonesia
  • 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
  • Suprijanto Suprijanto Engineering Physics, Institute of Technology Bandung (ITB), Jalan Ganesha 10, Bandung 40132, Indonesia

DOI:

https://doi.org/10.21009/SPEKTRA.052.07

Keywords:

refilled drinking water, TDS sensor, TDS, EC, Bluetooth

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.

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Published

2020-08-31

How to Cite

Firmansyah, D. A., Khairunnisa Ibadurrohman, K. R., Restu Aji, B. B. T., & Suprijanto, S. (2020). MEASURING INSTRUMENT FOR REFILLED DRINKING WATER USING A TDS SENSOR. Spektra: Jurnal Fisika Dan Aplikasinya, 5(2), 153–162. https://doi.org/10.21009/SPEKTRA.052.07

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Vol. 5 No. 2 (2020): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 5 Issue 2, August 2020

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