HWM PermaNET TM
by HWM Global (Palmer Environmental) · 🇬🇧 United Kingdom · Noise Loggers & Monitoring
VERIFIEDHydrophone Correlating Logger (trunk main)
Hydrophone trunk-main noise logger with GPS time synchronisation enabling correlation of leak positions on large-diameter transmission mains. Reports over NB-IoT, LTE-M, 4G or 2G with optional flow and pressure inputs.
Technical specifications
| Meter / product type | Multi-parameter trunk-main leak noise logger (GPS time-sync) |
| Application | Trunk-main, plastic & sensitive-pipeline acoustic monitoring |
| Detection method | Acoustic leak-noise logging with GPS time-sync; fast burst detection (noise/pressure/flow profile alarms) |
| Sensor type | Acoustic noise sensor (+ hydrophone option) |
| Communication | Internal cellular 2G/3G/LTE-M (Cat-1) with SMS backup |
| Protection class (IP) | IP68 (submersible) |
| Housing material | Hydrophone 2 |
| Dimensions / weight | Logger 84 x 114.5 x 113.3 mm, 338 g; hydrophone 89.3 x 50 x 50 mm, 476 g |
| Operating temperature | -20 to +60 degC |
| Battery life | Typically 3 years (settings/signal dependent) |
| Power / battery | Internal battery; external battery-pack option for fast logging |
| Memory / logging | 1 million readings; sample rate 1 s to 24 h |
| Outputs / software | PermaNET Web cloud; leak/no-leak & signal-received alarms; HWM Deployment app |
| Accessories | External antenna options; external battery packs |
| Mounting / installation | Trunk-main chamber; acoustic sensor + hydrophone |
| Deployment type | Permanent fixed-network trunk-main monitoring |
✓ Compiled from the official manufacturer source. View source →
