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Sensitivity of Leak Recognition by WLM System: Noise Characteristics and Flow Dependencies

Explore how the WLM system detects leaks through noise levels and flow direction changes, showcasing the system's sensitivity even with slight pressure variations. Learn about leak details, noise development patterns, and the advantages of continuous monitoring. Discover how varying factors influence leak recognition and localization, emphasizing the importance of combining multiple indicators for accurate leak detection.

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Sensitivity of Leak Recognition by WLM System: Noise Characteristics and Flow Dependencies

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  1. Sensitivity of leak recognition by the WLM-SYSTEM Slight pressure change Flow direction change Noise development of leak

  2. Leak detail – noise characteristic Noiselevel on breakthrough 3200 Noiselevel 5h later 1850 Noiselevel 20h later 1550 Noiselevel before 1200

  3. Dependencies of this leak • Leak was approx. 250m from the probe. • See the leak in development (in range of 0.04 to 0.16l/s  0.5 to 1.7cm/s • Night analysis won’t give a hint on the distance of leak to WLM-Sensor; water into water  less noise is generated • Direction change of flow shows position of leak from WLM-Sensor • Leak gives only a high noise on breakthrough – the longer the leak exists the lower the noise • Advantage of permanent measurement! • 20h later nearly no hint due to the leak noise, only in combination with flow and pressure gives significant indication

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