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4G LTE-M/NB-IoT IIoT data logger for overflow detection in sewer networks and combined sewer overflows, with 2 dry-contact digital inputs and IP68 watertightness

The SOFREL NEO SWW (Sewage Detection) is the IIoT data logger in the SOFREL NEO range dedicated to overflow detection and self-monitoring of wastewater and stormwater collection networks. It is designed and manufactured by LACROIX Environment (LACROIX Sofrel), a French company specialised since 1971 in remote management and wireless data transmission for water and energy operators.
The device provides 2 dry-contact digital inputs and is compatible with the SOFREL CSV overflow sensor. It instantly detects the status change of the input linked to the sensor, time-stamps every event and stores up to 100,000 data points locally. Data is transmitted periodically, on schedule or on event to one or two SCADA central stations over 4G LTE-M / NB-IoT, with 2G fallback.
Its IP68 enclosure and waterproof connectors allow installation in manholes, overflow structures and underground chambers exposed to immersion. It runs on an internal lithium battery with up to 5 years of autonomy, depending on configuration, is configured on site via Bluetooth and detects sensor faults. The SOFREL NEO range received the Innovation Award in the instrumentation category at the H2O 2021 exhibition in Bologna, Italy.
Data is exploited in the SOFREL WEB LS cloud platform, in the SOFREL PCWin2 central station, or in third-party applications through web services and FTP, with analysis from a PC, tablet or smartphone. The NEO SWW can also communicate in M2M mode with SOFREL RTUs on DI status change, for example with the RTU of the upstream wastewater pumping station.
| Specification | Value |
|---|---|
| INPUTS | |
| Digital inputs (DI) | 2, dry contact |
| Analogue inputs (AI) | 0 (available on NEO CWW and NEO WWQ models) |
| Maximum frequency | 250 Hz |
| Minimum pulse time | 2 ms |
| Polarisation voltage | 3.3 V max. |
| Polarisation current | 15 µA max. |
| Compatible sensors | SOFREL CSV overflow sensor |
| COMMUNICATION | |
| 4G LTE-M | Bands B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85 |
| 4G NB-IoT | Bands B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B28/B66/B71/B85 |
| 2G | Quad-band GSM/GPRS/EDGE (850, 900, 1800, 1900 MHz) |
| SIM card | Standard (Nano and Micro SIM via adapter) |
| Antenna | External, IP68, 1.5 m cable |
| Transmission modes | Periodic, scheduled or event-based |
| Destinations | 1 or 2 SCADA central stations |
| Inter-site communication | Periodic or event-driven (DI status change) to SOFREL RTUs |
| Local communication | Bluetooth |
| LOGGING AND ALERTS | |
| Archiving capacity | 100,000 data points |
| Alerts | Instant detection via a dedicated DI; sensor fault detection |
| Temporary exceptions | Yes |
| CONFIGURATION AND COMMISSIONING | |
| Configuration | Local via Bluetooth; daily synchronisation with SCADA |
| Diagnostics | 4G/2G reception measurement; LED for visual diagnostics |
| CENTRALISATION | |
| SOFREL platforms | SOFREL WEB LS (cloud) and SOFREL PCWin2 (SCADA central station) |
| Third-party applications | Web services and FTP |
| Data exploitation | PC, tablet or smartphone |
| Other SCADA systems | Contact Marfel |
| POWER SUPPLY | |
| Main power | Internal lithium battery |
| Battery life | Up to 5 years (depending on configuration) |
| External power (optional) | Solar panel, mains power, micro-turbine or battery pack |
| External input voltage | 5 to 30 VDC; required power 3 W; inrush current 3 A |
| PHYSICAL AND ENVIRONMENTAL | |
| Dimensions | H 193 mm × W 155 mm |
| Weight | 800 g |
| Protection rating | IP68 |
| Connectors | Waterproof |
| Opening | Screwless system with access to SIM and battery |
| Operating temperature | -20 °C to +55 °C |
| Storage temperature | -25 °C to +70 °C |
| MANUFACTURER | |
| Manufacturer | LACROIX Environment (LACROIX Sofrel) |
| Country | France |
| Warranty | Contact Marfel |
SOFREL NEO SWW Brochure