HWM PermaLog+
by HWM Global (Palmer Environmental) · 🇬🇧 United Kingdom · Noise Loggers & Monitoring
VERIFIEDNoise Logger
The classic radio acoustic noise logger that established lift-and-shift leak monitoring. Records minimum night-time noise levels on fittings and flags leak/no-leak status for collection by Patroller drive-by or fixed network. Lithium battery typically lasting 5 years, fully submersible to 4 m, operating −30°C to +60°C.
Technical specifications
| Meter / product type | Acoustic leak noise data logger |
| Application | Permanent / semi-permanent / survey leak detection |
| Detection method | Night acoustic level & spread logging; radio LEAK-state alarm; Aqualog mode stores up to 29 days level+spread for leak/non-leak trend analysis |
| Sensor type | Acoustic (structure-borne) noise sensor |
| Communication | Radio LEAK alarm; Patroller 4 Bluetooth drive-by collection |
| Protection class (IP) | IP68 submersible (tested 10 m / 24 h) |
| Housing material | Accelerometer sensor |
| Dimensions / weight | 50 x 117.6 mm, 620 g |
| Operating temperature | -30 to +60°C |
| Battery life | Typically 5 years (mode-dependent) |
| Power / battery | Replaceable lithium battery |
| Memory / logging | Up to 29 days of level & spread history (Aqualog mode); user-programmable |
| Outputs / software | WebCorr correlation app; Patroller 4 transceiver; histogram/graph download |
| Accessories | Mounting magnet; Patroller 4 transceiver |
| Mounting / installation | Magnet mount on pipe fittings |
| Deployment type | Permanent / semi-permanent / survey (lift-and-shift) |
✓ Verified from manufacturer datasheet. View datasheet →
