SubSurface Enigma 3 Standard Logger System

• Number of Loggers: 3
• Maximum Correlations per Deployment: Up to 3
• Sensor Type: Integral Accelerometer
• Sensor Frequency Range: 1 to 2,400 Hz
• Sensor Sensitivity: 10 V/g
• Sensor Attachment: Integral Magnet
• Sensor Material: Aluminum
• Sensor Ingress Protection Rating: Submersible to IP68
• Sensor Operating Temperature: 14°F to 140°F (-10°C to +60°C)
• Maximum Total Recording Time: 180 Seconds
• Sensor Data Memory: 32 MB Static RAM
• Sensor Communication Type: Optical
• Sensor Communication Rate: 2.5 Mbits/sec
• Sensor Power Type: Dual Lithium Cells
• Sensor Battery Replacement: At Factory or Service Center
• Sensor Operating Time: More Than 5 Years with Standard Programming
• Number of Epochs: 1, 2, or 3
• Epoch Duration: 60 Seconds
• Sampling Rate: 4,860 Hz
• Sampling Resolution: 24-Bit
• Host Communication Type: USB
• Data Saved into Case: One Run
• Case Power Supply Type: User-Replaceable Alkaline 4-Cell Pack
• Case Material: Ruggedized High-Impact Plastic
• Case Ingress Protection Rating: IP65
• Case Operating Temperature: 14°F to 140°F (-10°C to +60°C)

The Enigma 3 Standard Data Logger system helps water utility crews and leak detection professionals locate leaks in underground water pipes through acoustic correlation. Each of the three loggers uses an integral accelerometer to detect vibrations created by escaping water at pipe contact points. After retrieval, the recorded data is transferred to the host software, which analyzes logger pairs and calculates possible leak locations. With three loggers deployed, the system can provide up to three correlations in a single survey run, allowing crews to inspect several pipe sections from one deployment.

Designed for overnight monitoring, Enigma 3 records during up to three 60-second sample periods, when background noise and water usage are typically lower. Comparing correlation results across each sample helps distinguish continuous leak noise from temporary water consumption. The loggers feature integral magnetic attachment, IP68 submersible protection, more than five years of operating time under standard programming, and a rugged IP65 communications case for field transport and data transfer.

• (3)x Data loggers w/ magnet base
• Data transfer USB cable
• Eight position data transfer case

• SubSurface Enigma 3 Standard Logger System Product Datasheet
• SubSurface Enigma 3 Standard Logger System Product Manual