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Design and Construction of an Arduino Uno-Based Water pH Level Monitoring System for Coal-Fired Power Plant Boilers Djaki, Fadliyani; Abdussamad, Syahrir; Nasibu, Iskandar Zulkarnain; Dako, Amirudin Yunus
Jambura Journal of Electrical and Electronics Engineering Vol 8, No 1 (2026): Januari - Juni 2026
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v8i1.36121

Abstract

The design of an Arduino Uno-based water acidity (pH) monitoring device for boilers at Steam Power Plants (PLTU) fundamentally provides significant assistance to field technicians who monitor water acidity levels daily. Currently, the water sampling process for boilers is generally conducted manually, which is inefficient because the water quality in the boiler fluctuates constantly, while sampling is only performed every eight hours. The objective of this research is to design a pH monitoring device for boilers and display the sensor readings on an LCD monitor. The methodology used in this study involves experimental design for both hardware and software. The hardware utilizes a pH sensor with a pH 4502C module as the input, which is then processed by an Arduino and displayed on the LCD. The results indicate that the pH sensor system using the pH 4502C module can achieve a reading accuracy of up to 95.6%, and the device is considered to be in compliance with national standards. During detection, the sensor monitors pH levels between 7.0 and 11.0; if the level exceeds the 11.0 threshold, the buzzer will deactivate.
Co-Authors Abd Wahid A. Antu Abdul Riswan Langinusa Ade Irawaty Tolago Alfin Akuba Amiruddin Bengnga Amirudin Y. Dako Andi Bode Andi Subhan Arafat, Muhammad Yasser Arifin Matoka Asniwati Zainuddin Azis Steven Ance Bambang Panji Asmara Brahmathio, Nazrul Budy Santoso Dako, Rahmat Deddy R. Dako, Rahmat Deddy Riyanto Dako, Rahmat Dedi R. Devi, Devita Gude Dicky Dunggio Djaki, Fadliyani Duhi, Sahrul Dwi Ratnasari Eka Zahra Solikahan Fenti Prihatini Dance Tui Firman Pakaya Gaffar, Gaffar Gude, Devita H, Haeriani Hasmirad Ndikade Hidayat Tahir Hulukati, Stephan A. Husain, Ayun Idham Halid Lahay Ifan Wiranto Ifan Wiranto Ikhsan Hidayat Ikhsan Hidayat Ingopo, Renaldi Anwar Irvan A. Salihi Ishak, Yulanda. S Iskandar Z Nasibu Iskandar Z. Nasibu Iskandar Zulkarnain Nasibu Iti, Mohammad Rifki izran mardjun Jamal Darusalam Giu JUNUS, ALYA PRATIWI PUTRI Juriko Abdussamad Kamil Amali, Lanto M. Karim, Jorry Laba, Ahmad Lanto M. Kamil Amali Lanto Mohamad Kamil Amali Lasau, Syakri Mahmud A. Manoe Mannan, Abdul Maryam Hasan Mochammad Sakir Moh Ihsan Hamsa Moh Rizal Pakaya Moh. Muhrim Tamrin Mohamad Rizky Wirajaya Mualief Ismail Muchlis Budiono Muhammad Asri Nadifa, Ulfatun Olha Musa Pegu, Owin R. Dako, Rahmat Dedi Rahmat D.R Dako Rahmat Deddy R Dako Rahmat Deddy Rianto Dako Restu Adjie priatim Rezqiwati Ishak Rianto Dako, Rahmad Dedi Risaji, Indra Riska Kurnianto Abdullah Riska Kurniyanto Abdullah Rusmulyadi, Rusmulyadi Salihi, Irvan Salmawaty Tansa Salmawaty Tansa Sardi Salim Saripudin Saripudin Senung, Bahtiar Sofyan, Mohammad Sofyan Sri Wahyuni Dali Stephan Adriansyah Hulukati Swastiani Dunggio Taufiq Ismail Yusuf Tongkad, Jainaldi Ulfatun Nadifa Wahab Musa Wahab Musa, Wahab Musa Wrastawa Ridwan Yasin Mohamad Yusuf H. Kanoi Z Nasibu, Iskandar Zainuddin, Asniwati Zainudin Bonok Zohrahayaty Zulkarnain Purnomo