Description
The new LD-15 Professional’s Leak Survey Instrument offers the highest sensitivity and the best audio quality ever offered in an acoustic listening device by our company.
Simple and quick way of surveying for water leaks.
High sensitive sensor, extra strong and water proof(submersible)
Survey for leaks at hydrants, valves and meters.
Use the High filter range for water leak surveying. Use the Low filter range for water leak pinpointing.
Key Features
- High sensitivity sensor with Neodymium magnet (extra strong). Sensor and cable connection completely sealed and water-proof (submersible).
- Amplifier with superior audio quality (very low distortion and superior signal-to-noise ratio) and large meter display. Press the Mute Switch to hear sounds when you are ready.
- “Survey” for water leaks by listening at hydrants and valves with the sensor and magnet. Survey at water meters with a Long Contact Rod (optional).
- “Pinpoint” water leaks in pipes under asphalt or concrete with the base plate attached to the sensor and magnet.
- Use the High filter range for water leak surveying. Use the Low filter range for water leak pinpointing. High frequency leak sounds travel on the pipes, but only low frequencies pass through the soil.
Water leak sample sounds:
No Leak - Steel Pipe #1
Water flowing
The sound is generally a soft, steady whooshing or humming noise due to the friction of water moving against the pipe walls.
Play SoundDistant Leak - Cast Iron #2
Listening on a Valve
The leak generates a wide range of frequencies, from low to high, but higher frequencies attenuate quickly in cast iron, so closer leaks sound sharper, while distant ones are duller.
Play SoundLeak - Copper Service #3
Listening on a Hydrant
High-frequency hissing or whooshing – this is typical of a pressurized water leak through a small orifice or crack in a copper pipe. Copper transmits high-frequency sound very well, so the leak noise has a “sharp” or “clean” tone.
Play SoundLeak - Copper Service #4
Listening W/Meter Turning
The recording features a constant, high-pitched whooshing sound, typical of water escaping under pressure through a small opening in a copper service line. With a distinct and repetitive click or tick
Play SoundLeak - PVC Pipe #5
Listening Close to a Valve
When the microphone is close to the leak source (e.g., on the valve body), you may hear intermittent turbulence — like air mixing with water or irregular pressure pulses.
Play SoundLeak - Ductile Iron #6
650' from Leak
This sound was recorded 650 feet away from a leak on a high-pressure Ductile Iron Pipe. It features a very clear and distinctive leak sound, characterized by a whistling noise.
Play Sound
