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Correlation is a computer-assisted method, with which very accurate leak detection can be carried out.
From each leakage point, a sound is produced, which spreads through the pipe and transfers it to hydrants, fittings or sliders. At up to three contact measuring points, the sound is captured by the high-sensitivity signal pick-ups and transmitted to the correlator via the LD radio transmitter.
The LD20HC calculates the exact leakage position from the transit time difference of these signals taking into account the material, the pipe diameter and the length of the measuring path.
While leak detection with other electroacoustic methods - especially with long pipelines - can only be carried out with difficulty due to disturbing factors such as weather, buried depth of the tube or a high noise level, a leak point can still be easily detected by correlation in such circumstances.
The LD20HC combines quality engineering "made in Germany" with the latest technology for leak detection in pipelines or drinking water networks and is thus an ideal standard equipment for water suppliers and metrological service providers.
At leakage points, water emerges under pressure, producing an outflow noise that moves in both directions through the pipelines and is detected by highly sensitive sensors, which can be installed at accessible points such as hydrants or valves.
Because the type of water pipe always affects the sound propagation, the material and diameter of all pipes can be specified in the LD20HC and up to 20 pipe sections can be examined with only one measuring operation.
The recorded signal is amplified and transmitted to the correlator by radio, which allows an application of 256 freely selectable filters to the signal.
Can also be used for acoustic leak and pipe detection
Different body or floor sound microphones can also be connected to the LD20HC for listening. In combination with the floor sound microphone, the leak location previously determined by correlation, can be verified. Further, all other acoustic leak and pipe detection can be performed.
Thanks to the patent-pending Smart function, you can see directly on the display what is important: potential leak points are displayed as bar indicators and the steepest level is the leak point. Leakages can not be detected faster and easier acoustically!
Benefits for practice:
Standard scope of delivery:
TRT-CE-LD20HC-HS-001-DE.pdf (109 KB)
TRT-CE-LD20HC-HS-001-EN.pdf (109 KB)
TRT-BA-LD20HC-TC-002-DE.pdf (8.63 MB)
TRT-BA-LD20HC-TC-002-EN.pdf (8.59 MB)
TRT-BA-LD20HC-TC-002-FR.pdf (8.60 MB)
TRT-BA-LD20HC-TC-002-IT.pdf (8.60 MB)
TRT-BA-LD20HC-TC-002-NL.pdf (8.59 MB)
TRT-BA-LD20HC-TC-002-PL.pdf (8.60 MB)
TRT-BA-LD20HC-TC-002-TR.pdf (8.59 MB)