Hydrophone 2
The all-new Hydrophone 2 is an advanced leak noise sensor that is proven to deliver significantly increased performance on plastic pipes and trunk mains.
Trunk Main Monitoring and Leak-Location Correlation
On large-diameter transmission and trunk mains, the Hydrophone 2 system detects low-frequency leak signals within the water column rather than relying solely on sound transmission through the pipe wall. Monitoring points can be spaced up to 6,000 feet apart for alarm detection and up to 3,000 feet apart for leak-location correlation using recorded audio files. The audio files can be reviewed remotely through the PermaNet Web portal, where correlation results can be overlaid on the utilityâs GIS network map to show the estimated leak location. This approach gives utilities another way to monitor critical infrastructure that can be difficult and costly to survey using conventional acoustic methods.
KEY FEATURES AND BENEFITS
- High performance: The Hydrophone 2 system is engineered for leak detection on plastic and non-metallic pipelines, where pipe-material acoustic properties can reduce sound transmission through the pipe wall. By listening within the water column, the system can detect leak signals that may be difficult for conventional pipe-mounted logger technologies to capture.
- Sensitive: highly sensitive to low-frequency noise
- Advanced: A piezoelectric acoustic sensor and upgraded amplification circuitry are designed to detect faint leak signatures under challenging operating conditions.
- Made In America:Â
The Hydrophone 2 system incorporates a piezoelectric acoustic sensor manufactured in the United States. Developed from sensor technology with U.S. Navy origins, it is designed for demanding water utility leak-detection applications.
- Accurate: allows leaks to be detected and pinpointed in situations where standard accelerometers will not.
- Versatile: screws directly into Aptlas/boundary box fittings: compatible with a range of hydrant adapters and other pressure-enabled fittings
- Compatibility: The Hydrophone 2Â is compatible with Tri Corr Touch Pro correlators, Multilog 2 data loggers, and advanced monitoring platforms, allowing it to fit within existing leak-detection programs. Recorded audio files can be reviewed remotely through the PermaNet Web portal, where correlation results can be overlaid on the utilityâs GIS network map to show the estimated leak location.
- Pressure monitoring: the system can include an optional pressure sensor so utilities can collect acoustic and pressure data from the same installation point. A coincident increase in acoustic decibel level and decrease in pressure provides two independent indicators that can help confirm a likely leak event and reduce false positives.
