- Durable Construction: Fully sealed, all-titanium body and sensors for long life in fresh, saline, or contaminated water.
- High Accuracy: Exceeds USGS standards with 3D factory calibration and anti-drift systems, delivering ±0.01 ft accuracy.
- Vented (H) vs Non-Vented: 700H is vented for automatic atmospheric pressure correction, simplifying accurate water level measurements.
- Advanced Logging: Multiple logging modes (Linear, Event, Fast Linear, Logarithmic) for detailed aquifer tests and transient event capture.
- Long-Term Deployment: Low-power design provides over 10 years of battery life or up to 2 million readings.
- Easy Integration: Native SDI-12, 4–20 mA, and RS-485 support for seamless connection to existing telemetry systems.
- Simplified Setup & Data: VuSitu mobile app + Wireless TROLL Com enables quick configuration, spot checks, and instant uploads to HydroVu.
Level TROLL 700H Data Logger
The Level TROLL 700H, available in a vented (35ft (11m)) configuration, exceeds USGS surface water stage-accuracy specifications. 3D factory calibration ensures accuracy across all field temperatures. And low-maintenance deployment saves time in the field and cost. This premium instrument easily integrates with accessories and in-well-mounted telemetry systems. Add HydroVu Data Services for real-time feedback on all of your water monitoring sites.
- Groundwater & Aquifer Studies: Characterizing aquifer properties, supporting remediation monitoring, and performing pumping or slug tests.
- Surface Water Monitoring: Measuring streamflow, river/lake stage, tidal levels, harbor conditions, and storm surge impacts.
- Stormwater Management: Establishing baselines and tracking water level fluctuations during storm events.
- Coastal & Wetlands Research: Monitoring tidal influence, wave action, and wetland hydrodynamics.
- Specialized Monitoring: Supporting geothermal studies, integrating with water-quality sensors, and suitable for deployment in narrow wells.
- Construction: All-titanium body, Delrin nose cone, and rugged twist-lock cable.
- Pressure Sensor: Titanium piezoresistive sensor; available in vented (gauged) for automatic compensation or absolute version.
- Accuracy: ±0.01 ft (up to 15 ft) and ±0.1% of reading (above 15 ft).
- Range (700H): Typically 15 psig (≈35 ft) for vented models.
- Temperature Sensor: Silicon-based; ±0.1°C accuracy within a 0–40°C calibrated range.
- Communication: Supports SDI-12, Modbus/RS-485, and 4–20 mA outputs.
- Memory: 4 MB internal storage (≈260,000 data points).
- Battery: 3.6V lithium; operational life of ~10 years or 2 million readings.
- Logging: Multiple advanced logging modes (Linear, Event, etc.) with up to 4 readings per second.
- Compensation: Automatic atmospheric pressure compensation for vented models.
