Used SubSurface Instruments LD-18 Leak Detector


Condition: Used, in great working condition.

SKU: QWA10057 Category: Tags: ,


Used SubSurface Instruments LD-18 Digital Water Leak Detector

We are offering a SubSurface Instruments LD-18 Digital Water Leak Detector. Item is a demo unit that we are looking to sell. Never used in the field. Still in great working condition.


  • All-digital ampli?er, with automatic noise reduction of intermittent sounds, high and low ?lters, storage and graphing of sound levels at different locations on the pipe, bar graph and numeric display of sound loudness, USB connection, and back light.
  • Automatic noise reduction capability for intermittent noises such as pedestrian footsteps, people talking, and passing vehicles.
  • Storage and graphical display of the leak‘s loudness at multiple locations along the pipe.
  • Large LCD Display, provides superior visibility in both direct sunlight and dark environments.
  • 5 High Frequency ?lters, 3 Low Frequency ?lters (plus Low ?lter OFF), and 2 Notch ?lters (plus Notch ?lter OFF) to remove continuous interfering noises from A/C hum, motors, wind, etc.
  • Hard ABS plastic carrying case included.
  • Soft padded case and waist strap for the transmitter

Amplifier Specifications:

  • Size: 6.4″ x 3.0″ x 5.7″ (16.3 cm x 7.6 cm x 14.5 cm)
  • Weight: 2.2 lbs (including 4 C batteries) (997.9 kg)
  • Input Power: Four (4) C dry cell batteries
  • Battery Life: (continuous use) 24 hours minimum
  • Frequency Range: 50 Hz to 2200 Hz


  • Combined Sensitivity and Amplification: 900 V/G or higher (at 400 Hz)
  • Low Filters: Off, 100 Hz, 200 Hz, 400 Hz
  • High Filters: 400 Hz, 600 Hz, 800 Hz, 1200 Hz, 2200 Hz
  • Notch Filters: Off, 50 Hz, 60 Hz
  • Maximum No. of Sound: 250 (by date and time)
  • Weather Resistance: IP52 equivalent
  • Temperature Range (working): -4 F – 130 F (-20 – 54 C)


  • Type: Piezo electric ceramic
  • Weather Resistance: IP67 equivalent (3 ft. water depth for 30 minutes
  • Standard Base: 3-pronged plate (removable with nutdriver)

ABS Carrying Case Specifications:

  • Size: 18.5″ x 14.6″ x 7.5″ (470 mm x 371 mm x 190 mm)
  • Weight: 15.8 lbs (7.16 kg)


  • SubSurface Instruments LD-18 Digital Water Leak Detector
  • Headphones
  • Carrying Strap
  • Ground Microphone & handswitch
  • DNR-18USB cable
  • WLDwin Software CD
  • Craftsman 10mm Nutdriver
  • Hard Carrying Case
  • Operational Manual


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