Alat Kontrol pH Air Otomatis Pada Budidaya Ikan Air Tawar menggunakan Automatic Sensor Lifter Terintegrasi Internet Of Things (IoT)

Abstract

The accuracy of water pH measurement results during control and monitoring can determine the optimal water condition of fish ponds for fish growth and health in freshwater fish farming. By automatically controlling the pH of the water using an automatic sensor lifter, it can produce more accurate and practical measurements. In this study, a control device was created that can automatically control and monitor the pH of water using an automatic sensor lifter to lift and dip the pH sensor when taking measurements to minimize the inaccuracy of the pH sensor readings and keep the sensor in an optimal state. If the pH of the water is detected to be below 6.5 and above 8.5 the aerator pump will be activated as an aeration process to stabilize the pH value in a neutral state, and the measurement results will be displayed on the lcd, as well as the Blynk android application with data stored in the memory card. From the results of tests conducted on six conditions (two mornings, two afternoons, afternoons, and nights), it was obtained that the control device had a high accuracy level of 99.99% which was able to minimize the inaccuracy of sensor readings with the resulting calibration equation y = 43.521-12.955x. Testing in the morning, the accuracy level of the pH sensor at 06:00 WIB was 99.99% with a measured pH value of 6.9-7.3 and at 09:00 WIB the accuracy level was 99.99% with a measured pH value of 6.9-7.2. During the day at 12:00 WIB the accuracy level is 99.99% with a pH value of 7.0-7.3 and at 15:00 WIB the accuracy level is 99.99% with a pH value of 6.9-7.2. In the afternoon at 18:00 WIB the accuracy level is 99.99% with a pH value of 6.8-7.5 and at night at 21:00 WIB the accuracy level is 99.99% with a pH value of 6.4-7.3