To date, temperature monitoring of plant equipment has often relied on spot sensor monitoring or human patrols, making it difficult to reliably monitor temperatures without blind spots resulting from technological and cost barriers. Meanwhile, deteriorating facilities, the aging of veteran employees, and a shortage of personnel continue to pose significant challenges for companies in implementing HSE (Health, Safety, Environment) policies. Yokogawa Electric’s Fiber Optic Temperature Sensor DTSX solves these problems. Predictive maintenance using fiber optic temperature sensors is now being introduced in a wide range of fields, including steel, electric power, and chemical plants, as well as transportation infrastructure.