Data Logger Sofrel Open Sensor High Power

The SOFREL OpenSensor High Power is an "open" IoT data logger for overflow control, ultrasonic flow monitoring and wastewater quality tracking, manufactured by LACROIX under the SOFREL brand, which specializes in remote management and monitoring solutions for water networks. It belongs to the SOFREL DL4W 4G LPWAN data logger range, in its high-power DL4W-HP model.

It combines in a single unit an integrated ultrasound probe for level measurement from 0 to 3 m (0 to 9.8 ft), with ±3 mm (±0.12") accuracy, and an RS-485 Modbus RTU link that periodically acquires up to 14 registers spread across 8 Modbus devices, such as flowmeters or quality sensors. It powers connected devices at 12 V or 20 V with up to 2 W cumulative power and detects sensor link faults. It also provides 2 digital inputs for meters, status signals, overflow sensors and rain gauges, and 1 analog input for a SOFREL pressure sensor or third-party sensors on a 4-20 mA loop, with sampler control.

It calculates flow from measured height using two conversion tables, the associated daily volume and the daily number of overflows, with dynamic archiving of up to 100,000 data points. Its enclosure features enhanced IP68 waterproofing, verified by an independent laboratory through 30-day immersion tests under 4 m (13.1 ft) of water. It runs on an internal lithium battery and, optionally, on external power from a photovoltaic kit, mains supply, micro-turbine or battery.

Data is transmitted over 2G/4G M2M cellular networks (LTE-M and NB-IoT) to the utility's SCADA system, with daily synchronization, and it can be fitted with an optional 4 or 8 m (13.1 or 26.2 ft) external FLEX antenna. It communicates in inter-station mode with SOFREL S500, S4W, AS and YDRIX RTUs, simplifies data use through the SOFREL WEB LS IoT platform and is compatible with SOFREL conductivity, turbidity and pH/redox/temperature sensors. It is configured in the field via Bluetooth.