Secured Ground and Surface Water Monitoring in Romania

In Romania, over 700 measurement points have been installed for groundwater and surface water monitoring—with precise STS pressure technology for reliable data transmission, alerts, and long-term stability.

A reliable measurement infrastructure is essential for a safe drinking water supply and flood protection. Under the leadership of STS and partner MDS Electric Srl, a comprehensive monitoring system has been implemented in Romania—with battery-powered sensors, automatic alerting, and state-of-the-art data transmission.

Monitoring System for an Entire River Basin

Romania sources its drinking water largely from the Danube River and groundwater wells. To sustainably protect these resources, a nationwide system has been developed over several years:

• Over 700 installed data loggers
• More than 350 transmission units
• Applicable even in remote areas

Customized Solutions for Each Measurement Site

Each measurement point was evaluated individually to tailor the configuration—taking into account soil conditions, infrastructure, and transmission requirements. The following were used:

• DL/N 70 – Pressure and temperature data logger for long-term use
• WMS/GPRS/R/SDI-12 – Complete system with wireless transmission
• DTM.OCS.S/N – Digital Modbus transmitter with 0.03 % FS accuracy

All devices are designed for low-maintenance operation, even under fluctuating temperatures, weak infrastructure, and over extended periods.

Smart Features for Enhanced Security

The system offers:

• Automatic alerting when thresholds are exceeded
• Prompt M2M data transfer
• Monitoring of water level, water, and ambient temperature
• A server platform for analysis, visualization, and archiving

Technical Highlight: DTM.OCS.S/N

The DTM.OCS.S/N impresses with:

• Pressure measurement range: 200 mbar to 25 bar
• Accuracy (characteristic curve): ≤ ± 0.15 / 0.05 / 0.03 % FS
• Operating temperature: -40 to +85 °C
• Medium temperature: -5 to +80 °C
• RS485 with Modbus RTU interface
• Simple installation & calibration (offset/slope)

Thanks to its low power consumption and high robustness, the sensor is ideal for autonomous energy systems—and provides reliable data even under challenging conditions.

Conclusion

With the project in Romania, STS demonstrates how modern pressure measurement technology contributes to securing water supply and protecting against natural hazards. Together with local partners, large-scale monitoring systems can be implemented effectively and sustainably.