Subsurface Instruments LD-8 Leak Detection Survey Tool Kit

Subsurface Instruments LD-8 Leak Detection Survey Tool Kit

The SubSurface Instruments LD-8 Leak Survey Tool helps water utility crews find signs of leaks in pressurized water systems. It is a portable acoustic listening device designed for routine surveys at hydrants, meters, and valves, where leak sounds can travel through the pipe and its fittings.

To use the LD-8, an operator places a contact rod against an accessible point and listens through the headphones. The amplifier makes faint sounds easier to hear, while the volume control and three sensitivity settings help the operator adjust to different conditions.

A two-digit display shows the relative loudness of the sound being detected. By comparing readings at nearby meters, hydrants, or valves, a crew can identify the area where a suspected leak sounds strongest. Built-in notch filters help reduce electrical hum that could interfere with listening.

The LD-8 is suited to regular leak surveys and follow-up checks when unexplained water loss is suspected. Its contact rods reach different access points, and the kit packs into a carrying case for field use. It helps crews narrow down where to investigate further; a separate pinpointing step may still be needed to determine the exact leak location.

Features:

• Acoustic leak detection: Uses contact rods to listen for leak sounds at hydrants, meters, and valves.
• Adjustable sensitivity: Three settings help with faint or loud leak sounds.
• Headphone monitoring: Stereo headphones let the operator listen while surveying.
• Two-digit sound display: Shows relative loudness so readings at nearby locations can be compared.
• Electrical noise filtering: Notch filters help reduce hum from power lines and transformers.
• Multiple contact rods: Includes a short rod and a four-section rod set for different access points.
• Portable kit: Packs into a protective carrying case and runs on two AA batteries.