SePem 155
by Hermann Sewerin GmbH · 🇩🇪 Germany · Noise Loggers & Monitoring
VERIFIEDNoise Logger
Mobile and permanent radio noise logger with highly sensitive piezo microphone optimised for leak noise. Magnetically attaches to valve spindle extensions, hydrants and fittings; records structure-borne noise cyclically during quiet night hours (~02:00–04:00) and transmits to the SePem 01 Master during drive-by patrols, flagging relative level changes as new leaks. Stainless steel and engineering plastic housing, fully waterproof.
Technical specifications
| Meter / product type | Noise logger (mobile + permanent) |
| Application | Lift-and-shift survey & permanent leak prelocation |
| Detection method | Minimum Noise Level (MNL) logging in night window (~02:00-04:00); relative level-change detection |
| Sensor type | Piezoelectric structure-borne sensor |
| Communication | Bidirectional drive-by radio 461.0-469.6 MHz, 20 mW, to SePem 01 Master |
| Protection class (IP) | IP68 |
| Housing material | Stainless steel + engineering plastic housing |
| Battery life | Multi-year internal battery |
| Power / battery | Internal battery (sealed, non-mains) |
| Memory / logging | Nightly MNL logging; last-measurement graph retrievable drive-by |
| Outputs / software | MNL, spread & frequency on SePem 01 Master; last-measurement graph drive-by; PC via USB |
| Accessories | Mounting magnet; SePem 01 Master receiver |
| Mounting / installation | Magnetic mount on valves, hydrants and fittings |
| Deployment type | Lift-and-shift / patrol & permanent fixed network |
✓ Verified from manufacturer datasheet. View datasheet →
