The Contact Ultrasound Sensor is designed for detecting leakage in pressurized gas and liquid valves. Using contact ultrasonic sensing, ultrasound energy travels through the metal surface, and accurately captures high-frequency ultrasonic signals generated by internal valve leakage. Combined with intelligent analytics and a guided workflow, it automates the full process—from data acquisition and feature extraction to leak diagnosis—improving inspection efficiency and consistency in industrial environments. It is ideal for preventive maintenance and fault diagnostics of critical assets such as oil pipeline valves and natural gas network valves, supporting predictive maintenance decisions.