Rancang Bangun Sistem Monitoring Electrical Conductivity Berbasis PLC S7-1200 dan Node Red Pada Area BOP 2 PT. Krakatau Chandra Energy. Journal of Instrumentation and Hardware, [S. l.], v. 4, n. 1, p. 22–29, 2026. DOI: 10.53026/kptsn004. Disponível em: https://jih.akamigas.ac.id/index.php/inhardware/article/view/36. Acesso em: 11 nov. 2026.