SETIAWAN, HARRY (2025) RANCANG BANGUN SISTEM MONITORING KUALITAS AIR REVERSE OSMOSIS (RO) UNTUK HEMODIALISA SECARA REAL TIME BERBASIS IOT. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Reverse osmosis (RO) is a water treatment system that plays a crucial role in providing sterile, HIGH-quality water for hospital needs, particularly to support the hemodialysis process. However, conventional RO systems have limitations as they can only be operated manually (OFFline) at the water treatment unit location, which slows down monitoring and maintenance processes. This may impact the water quality, potentially compromising the safety of hemodialysis patients. This study developed an Internet of Things (IoT)-based system to remotely monitor and control RO installations. The system integrates key sensors, including a TDS Meter to measure dissolved solids, a Waterflow Sensor to monitor water flow rate, a Pressure Sensor Transmitter to detect pressure in the membrane filter, and a DS18B20 Temperature Sensor to maintain stable water temperature. Additionally, the system is equipped with an automatic flushing control feature using solenoid valves and relays to clean the RO membrane, as well as an AC Voltage Detector Sensor to monitor tank status and prevent damage due to Overload. The test results indicate that this system successfully maintains water quality according to hemodialysis standards, with TDS values of 3–10 ppm, a flow rate of 5.8–6 L/min, Operating pressure of 40 psi, and water temperature within the range of 25–35°C. With this system, technicians can perform monitoring and maintenance from anywhere using a smartphone through the Arduino.cc platform, making the RO water treatment system more effective, efficient, and supportive of sustainable hemodialysis services. Keywords: Reverse osmosis (RO), OFFline, Waterflow Sensor, TDS Sensor, Pressure Sensor Transmitter, DS18B20 Temperature Sensor, Internet of Things (IoT), Arduino.cc Platform, remote control, Arduino, ESP32 Reverse osmosis (RO) adalah sistem pengolahan air yang berperan penting dalam menyediakan air berkualitas steril untuk kebutuhan rumah sakit, khususnya mendukung proses hemodialisa. Namun, sistem RO konvensional memiliki keterbatasan karena hanya dapat dioperasikan secara manual (OFFline) di lokasi unit pengolahan, yang memperlambat pemantauan dan perawatan. Hal ini dapat berdampak pada kualitas air yang tidak optimal bagi pasien hemodialisa. Penelitian ini mengembangkan sistem berbasis Internet of Things (IoT) untuk memantau dan mengendalikan instalasi RO secara jarak jauh. Sistem ini mencakup sensor-sensor penting seperti TDS Meter untuk mengukur kandungan padatan terlarut, Waterflow Sensor untuk memantau laju aliran air, Pressure Sensor Transmitter untuk mendeteksi tekanan filter membrane, serta sensor Suhu DS18B20 untuk menjaga stabilitas suhu air. Selain itu, dilengkapi fitur kendali flashing otomatis menggunakan solenoid valve dan relay untuk membersihkan filter membrane, serta Sensor Detektor Tegangan AC yang memantau status tangki dan mencegah kerusakan akibat Overload. Hasil pengujian menunjukkan bahwa sistem ini mampu menjaga kualitas air sesuai standar hemodialisa dengan nilai TDS 3–10 ppm, debit air 5,8–6 L/min, tekanan 40 psi, dan suhu air pada rentang 25–35°C. Dengan sistem ini, teknisi dapat melakukan pemantauan dan perawatan dari mana saja menggunakan smartphone melalui platform Arduino.cc, sehingga sistem pengolahan RO menjadi lebih efektif, efisien, dan mendukung keberlanjutan pelayanan hemodialisa. Kata kunci : Reverse osmosis (RO), OFFline, Waterflow Sensor, TDS Sensor, Pressure Sensor Transmitter, Sensor Suhu DS18B20 Internet of Things (IoT) , Website Arduino.cc, kendali jarak jauh, Arduino, ESP 32.
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