SubSurface Leak Detection LD-18 Digital Water Leak Detector

SubSurface LD-18 Digital Water Leak Detector

Designed to detect, survey, and pinpoint water leaks with precision and reliability.

The LD-18 is a fully digital leak detector built for use in noisy environments. It amplifies leak sounds while filtering out intermittent interference, allowing operators to focus on true leak signals without distraction. By capturing and logging sound levels at multiple locations, it provides both immediate results in the field and a record for later analysis.

Advanced Digital Amplification with Noise Suppression

The LD-18 incorporates automatic real-time noise suppression that blocks intermittent interference from sources such as passing vehicles, foot traffic, or conversation. With a combined sensitivity and amplification of 900 V/G at 400 Hz, it delivers clear leak sound detection across a wide frequency spectrum.

Flexible Detection Filter Options

Operators can choose between five high-frequency filters and three low-frequency filters to adapt the instrument to various pipe materials and conditions. Two notch filters are also available to eliminate steady sources of interference such as AC hum, motors, or wind noise. This range of options gives the LD-18 the versatility to function effectively in diverse environments.

Robust Hardware and Sensor Design

The amplifier housing measures 6.4 by 3.0 by 5.7 inches and weighs approximately 35 ounces with batteries installed. It carries an IP52 rating for dust and water resistance, while the ceramic piezoelectric sensor is IP67 rated and capable of being submerged to a depth of three feet for up to 30 minutes.

Durable and Field-Ready

The LD-18 is designed to perform in demanding conditions, operating in temperatures from -4 °F to 130 °F. It comes with a ground microphone and hand switch, base plate, aviation-style stereo headphones, padded amplifier case, USB cable, waist strap, and screwdriver, all stored in a rugged ABS carrying case.

Why Field Operators Choose the LD-18

The LD-18 combines digital noise suppression, flexible filtering, visual and audio feedback, and rugged construction in one portable system. It is trusted by utilities, municipalities, and maintenance professionals who need reliable leak detection under challenging conditions.

Contact Green Equipment Company today to schedule a demo or request a quote for the LD-18.

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FAQs

Q: What makes the LD-18 different from other acoustic water leak detectors?

A: The LD-18 is the first water leak detecting instrument to offer automatic noise reduction for intermittent interfering sounds, passing vehicles, people talking, and pedestrian footsteps that would otherwise mask or mimic leak signals. This makes it significantly more effective in urban and high-traffic environments than standard acoustic detectors.

Q: How does the LD-18's digital processing improve leak detection accuracy?

A: The LD-18's digital audio processor uses dynamic range compression and automatic rejection of AC electrical interference, giving the operator a cleaner and more consistent signal regardless of changing background noise conditions. A digital display shows leak loudness numerically, reducing reliance on the operator's subjective judgment.

Q: Is the LD-18 still useful in quiet or rural environments, or is it only for urban use?

A: The LD-18 is effective in all environments. Its automatic noise reduction and digital processing are simply inactive when background noise is absent. In quiet conditions, it performs like a premium acoustic detector; in noisy conditions, it filters interference that would challenge simpler instruments.

Q: What types of pipe does the LD-18 work on?

A: The LD-18 detects leaks in both metallic and plastic water distribution pipes. Metallic pipes carry leak sound most efficiently; plastic pipes attenuate sound more rapidly, so shorter listening intervals between access points are recommended.

Q: Can Green Equipment Company train my crew to use the LD-18?

A: Yes. Free comprehensive on-site training is included with every LD-18 purchase. Green Equipment Company hand-delivers most equipment and provides training at delivery, with ongoing support available across our eight-state service territory.