Looking for a reliable, highly sensitive tool to locate underground water leaks with pinpoint accuracy? The SubSurface LD-12  is the industry-standard acoustic water leak detector trusted by utility professionals, municipal water departments, and plumbing contractors worldwide.

Combining advanced filtering technology with a low-noise amplifier, the SubSurface LD-12 lets you cut through ambient street noise and easily track down pressurized pipe leaks.

Key Features SubSurface LD-12:

• Six Selectable Filters: Split into three “low-side” filters (100Hz, 200Hz, 400Hz) and three “high-side” filters (600Hz, 800Hz, 1200Hz) to effectively block out background traffic and wind noise.

• Large Backlit Meter Display: Provides a clear visual indication of sound loudness, helping technicians compare signal strength and pinpoint the exact leak location.

• Built-In Limiter Switch: Automatically cuts off sudden loud noises exceeding 110 dB to protect your hearing if the ground sensor is accidentally dropped.

• Filter-Thru Mode: Bypasses all filtering options to allow full audio monitoring across a wide 50Hz to 15,000Hz frequency range.

• Versatile Accessory Kit: Includes a ground plate for street/slab pinpointing, a magnetic base for hydrants/valves, and a contact rod for meters/fittings.

Quick Specifications SubSurface LD-12:

• Amplifier Weight: Lightweight at 31 ounces (approx. 885 g)

• Frequency Range: 100Hz to 1200Hz (standard filtered) / 15Hz to 30,000Hz (Filter-Thru ON)

• Power Supply: Six (6) AA dry cell batteries

• Battery Life: Up to 28 hours (backlight OFF) or 14 hours (backlight ON)

• Headphones: Aviation-grade stereo headphones included

Frequently Asked Questions (FAQ)

Q: Is the SubSurface LD-12 suitable for both metallic and plastic pipes? A: Yes, it works on both, though metallic pipes transmit acoustic leak sounds more efficiently over longer distances than plastic pipes.

Q: How does the Limiter switch protect the operator? A: The Limiter switch instantly cuts off any loud sounds over 110 dB, protecting your ears from sudden spikes or feedback if the sensor is dropped on hard pavement.

Q: What accessories come standard with the SubSurface LD-12? A: The standard kit includes the amplifier with a neck strap, high-sensitivity ground microphone, aviation-grade stereo headphones, ground plate, magnetic base, 3-section contact rod, and a heavy-duty ABS carrying case.

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