If you’ve noticed a spike in your water bill, seen drops in water pressure or heard an audible leak somewhere in your home then you may be dealing with a leak. Faqs on leak detection not quickly identified and fixed these leaks can cause significant damage to your home and lead to costly repairs. Fortunately there are various methods of detecting and locating these leaks. One of the most common is an acoustic leak detection system. This system works by detecting sound waves created by the turbulence of the liquid as it flows through the pipes under pressure. This allows the acoustic detector to pinpoint the source of the leak and identify its exact location. The system then can be shut off to isolate the affected area and minimize damage and the loss of valuable liquids.
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Another commonly used method is an ultrasonic leak detection system. This system also detects the turbulence of the liquid as well but it does so by transmitting and receiving high-frequency vibrations. These vibrations are then recorded and analyzed by an electronic processor that compares the resulting data with a database of known leak signatures (fingerprints). An alarm is triggered if the residuals match a stored fingerprint.
A typical mass balance CPM leak detection system will produce a number of false alarms during its normal operation. These false alarms will typically be proportional to the rate of change in the leak size and will vary depending on the test gas (e.g. helium and air have different flow characteristics). The error in the leak location map tends to improve asymptotically with time. Thus, increasing the evaluation period, tEVAL, will generally extend the ability of the system to catch large leaks but at the expense of extending the minimum detectable leak size.