Noise loggers for leak detection in the drinking water system

Whether used individually or as part of a networked system, noise loggers make the invisible visible. They provide critical data for the sustainable, cost-effective, and safe operation of drinking water networks. With innovative solutions such as SmartEAR® and the POSEYEDON® Cloud, SebaKMT® sets the standard in intelligent leak monitoring.

What is a noise logger?

A noise logger is a digital measuring device for the acoustic monitoring of drinking water pipelines. It detects and documents characteristic noises caused by leaks in pipelines – the so-called leak noise. The loggers are mounted directly on fittings such as gate valves, hydrants, or house connection valves and record sound activity in the network over defined periods.

How does a noise logger work?

A noise logger detects sound waves that propagate through the pipeline system. If water escapes at a leaky point, a continuous leak noise is generated, which transmits along the pipe walls over greater distances. The logger records and evaluates these noises.

Modern devices – such as SmartEAR® – utilize intelligent algorithms to differentiate between ambient noises (e.g., traffic noise, pump noises) and typical leak signals. This enables reliable detection and targeted localization of actual leaks – even in complex network structures or noisy environments.

Why are noise loggers important for the drinking water supply?

Noise loggers enable the early detection of such vulnerabilities before serious damage, such as pipe breaks, occurs. Through continuous monitoring, they play a crucial role in minimizing water loss, increasing network stability, and sustainably protecting water as a resource.

Your benefits at a glance:

Applications for Noise Loggers

Noise Logger with Cloud Connectivity

The latest generation of noise loggers – such as SmartEAR® from SebaKMT® – elevates leak monitoring to a new level. These devices transmit the recorded noise data via mobile communication standards like NB-IoT or LTE-M directly to the POSEYEDON® Cloud.

These resources are available to water utility managers and technical directors, complete with visual and acoustic analysis capabilities. This enables convenient analysis and evaluation of suspected leak locations, irrespective of their operational base, whether in the office or in the field.

Noise Logger Compared to Other Leak Detection Systems

While devices such as correlators or ground microphones are used specifically for pinpoint leak detection, noise loggers are used for comprehensive monitoring of the pipeline network.

They detect unusual noise patterns and automatically trigger an alarm if potential damage is detected. This creates an effective early-warning system that enables targeted and efficient follow-up using other location methods—before major damage occurs.

Method	Advantages	Time of Deployment
Noise Logger	Area Monitoring, Long-Term Monitoring	Early stage, long-term
Correlator	Precise Location	After a notification / logger alarm
Ground microphone	Precise Location Determination	Final Step in the Repair Process

How many loggers are needed? My network?

Would you like to know how to effectively use noise loggers in your network? Contact us for a personalized consultation or a free network assessment.

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