Ground microphone for leak detection: Precise detection of water losses.
What is a ground microphone and why is it indispensable?
A ground microphone is a highly sensitive acoustic measuring device that is specifically used to locate leaks in drinking water networks. It detects the characteristic sounds of water escaping into the ground – often long before visible damage can be detected on the surface. This method is one of the most efficient and reliable ways to identify leaks at an early stage and repair them in a targeted manner.
How does leak detection work with a ground microphone?
A water leak causes pressure typical sounds under pressure – usually a rushing, whistling, or cracking sound. These sound waves spread through the pipe system and the surrounding soil.
Ground microphones detect these sounds with hmaximum sensitivity, filter out disruptive ambient noise, and pinpoint the exact location of the leak. This allows the damaged area to be detected efficiently and without unnecessary digging.
Components of a ground microphone:
- Sensor/microphone head – for ground contact
- Amplifier and analysis unit – visually displays signal strength
- Headphones – for detailed acoustic analysis
- Optional: Bluetooth connection & app – for modern workflows
Areas of application for a ground microphone
The ground microphone is always used when potential water damage has already been localized to a specific area—for example, with the help of correlators, modern sensor technology such as SmartEAR® or cloud-based systems such as POSEYEDON®. Typical areas of application are:
- House connections and street valves
- Paved roads and sidewalks
- Urban areas with high network density
- Plastic and metal pipes
HL 7000 – The professional ground microphone for demanding leak detection
The HL 7000 is a powerful, high-end device for precise acoustic leak detection. Designed for demanding conditions, it combines state-of-the-art microphone technology with intelligent filter functions—for reliable results even under difficult conditions.
- Maximum sensitivity—detects even the faintest leak noises
- Intuitive touch operation – with clear visual display for easy handling
- Intelligent filter functions – with individually adjustable frequency ranges and effective noise suppression
- Long-lasting battery power – for reliable use throughout the entire working day
Advantages of leak detection with ground microphones
- Fast, precise leak detection
- No excavation necessary
- Time and cost saving
- High success rate—even with minor leaks
- Ideal in combination with digital early warning systems such as SmartEAR® and POSEYEDON®
What you should look out for when buying
When purchasing a ground microphone, it is important to pay particular attention to sensitivity and frequency range, as these factors are crucial for detecting even the quietest leak noises. Digital filters also play an important role in effectively blocking out disruptive ambient noise such as traffic noise. A robust, weatherproof design is equally important to ensure that the device can withstand the daily demands of outdoor use. Finally, the ground microphone should be easy to transport and comfortable to use to enable efficient and ergonomic application.
Conclusion: Ground microphones are indispensable for locating drinking water leaks.
Suitable solutions for your Drinking water network
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