LD-18

Advanced “Pinpoint” technology finding water leaks at their exact location.

Enigma® pinpoints leaks others miss—smart, powerful, and built to listen where it matters most.

Enigma® is an advanced digital correlation logger designed to accurately locate leaks in buried water pipes. By combining noise logging and noise correlation in a single operation, it streamlines the leak detection process and boosts operational efficiency. Ideal for both temporary and semi-permanent deployments, this “Lift and Shift” solution is a versatile tool for water network surveys. Enigma® features powerful 24-bit data processing and analysis, giving it a proven edge in detecting difficult leaks that other systems often miss. Its ability to take and analyze three distinct sound samples allows it to differentiate between regular consumer usage and non-revenue water loss, delivering highly reliable leak detection results.

Trouble free deployment

Enigma correlating leak noise loggers are deployed at multiple positions, typically on valves or hydrants, during normal working hours. They may be programmed for either daytime or night-time operation.

MULTI-POINT NETWORK CORRELATION

Enigma® loggers are deployed at multiple positions, typically on valves or hydrants, during normal working hours. They maybe programmed for either daytime or night-time operation. The loggers record the actual leak sound. When retrieved the leak sound is transferred to the host software where it is processed to display all leak positions between loggers. Programming and data readback utilises optical and USB communications to ensure rapid operation.

OPTIMUM LEAK SENSING

Overnight use provides ideal conditions for leak detection. This is because background acoustic noise from traffic, water usage and other sources, is lowest and, at the same time, water system pressure can be higher which greatly aids leak sound propagation.

TECHNICAL SPECIFICATIONS

Additional information

Amplifier Size

6.4" x 3.0" x 5.7" (16.3 cm x 7.6 cm x 14.5 cm)

Amplifier Weight

2.2 lbs (including 4 C batteries) (997.9 kg)

Amplifier Input Power

Four (4) C dry cell batteries

Amplifier Battery Life

(continuous use) 24 hours minimum

Amplifier Frequency Range

50 Hz to 2200 Hz

Amplifier Amplification

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)

Amplifier Sensor

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

Amplifier Warranty

4 Years

ABS Carrying Case Size

18.5" x 14.6" x 7.5" (470 mm x 371 mm x 190 mm)

ABS Carrying Case Weight

15.8 lbs (7.16 kg)