Modern pipeline inspection requires advanced sensing technologies to accurately identify leaks hidden beneath soil and infrastructure. The PQ125 Series Leak Detection System, developed by Hunan Puqi Geologic Exploration Equipment Institute, integrates multiple sensor technologies to achieve precise underground pipeline leak location.

   The device features dual-membrane resonance sensors, acoustic cavity sensors, and tracer gas sensors, each designed to detect different types of leak signals. This multi-sensor configuration allows technicians to adapt to different pipeline environments, including municipal supply systems and buried distribution networks.

   The system’s acoustic detection operates within a 1 Hz–10 kHz frequency range, supported by 24-bit signal conversion and a 48 kHz sampling rate for high-resolution signal analysis. These capabilities allow the system to detect subtle leak sounds that traditional devices may miss.

   With a maximum detection depth of up to 8 meters, the PQ125 system is suitable for underground pipeline inspections. Its 16-point signal comparison interface helps operators analyze acoustic differences across multiple locations to determine the precise leak point.

   This technology improves inspection accuracy while reducing unnecessary excavation during maintenance operations.