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Sensitivity of leak recognition by the WLM-SYSTEM

Sensitivity of leak recognition by the WLM-SYSTEM. Slight pressure change. Flow direction change. Noise development of leak. Leak detail – noise characteristic. Noiselevel on breakthrough 3200. Noiselevel 5h later 1850. Noiselevel 20h later 1550. Noiselevel before 1200.

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Sensitivity of leak recognition by the WLM-SYSTEM

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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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