- Groundwater Monitoring: Long-term monitoring, aquifer tests (slug/pumping), tracking water table fluctuations.
- Surface Water Monitoring: Measuring river and lake stages, flow, and quality trends.
- Coastal & Estuarine Studies: Tidal monitoring, wetland assessments, and coastal water level/quality tracking.
- Stormwater Management: Monitoring levels and water quality during storm events and flood control.
- Mining & Remediation: Tracking mine drainage, pit lake levels, and water quality at contaminated sites.
- Hydrogeological Investigations: Characterizing water resources and analyzing hydrological events.
Level TROLL 500 Data Logger
The Level TROLL 500 is ideal for continuously logging measurements of water level, water pressure and temperature. Available in vented (gauged) pressure ranges up to 500 psig for automatic atmospheric compensation. Sensors calibrated across the full pressure and temperature range deliver accurate data. And solid titanium construction stands up to the most extreme conditions.
Easily integrate this versatile, sub-1-inch instrument with accessories and in-well telemetry. Pair with VuLink and HydroVu Data Services to enable remote data access and automatic event alerts. Smart Addressing on all In-Situ equipment ensures that each parameter is always mapped to the same Modbus address, allowing you to connect any device to the same data logger without having to reprogram when logging the same parameter.
- Vented (Gauged) System: The primary feature is its vented design, which automatically compensates for changes in barometric pressure by applying atmospheric pressure to the back of the sensor. This allows the logger to measure true water level directly, eliminating the need for post-deployment barometric data correction.
- Durable Construction: The instrument features fully sealed, solid titanium construction and sensors, providing corrosion resistance and durability in harsh environments.
- Compact Size: The data logger has a narrow diameter of 1.83 cm (0.72 in.), allowing for deployment in sub-1 inch wells and other narrow applications.
- High Accuracy: The sensors are calibrated across the full pressure and temperature range, with a 3D, NIST-traceable factory calibration to ensure optimal accuracy and minimize drift over time.
- Low-Maintenance & Long Battery Life: It uses ultra-low-power electronics and an internal 3.6V lithium battery that typically operates for 10 years or 2 million readings, reducing the frequency of field visits.
- Flexible Communication Protocols: The device supports several native output options, including Modbus/RS485, SDI-12, and 4-20 mA, which allows for easy integration into existing or third-party telemetry and SCADA systems.
- Data Logging Modes: It offers multiple logging modes, including linear, fast linear, and event, for versatile data collection strategies tailored to specific groundwater applications.
- Smart Addressing: All In-Situ equipment uses Smart Addressing, ensuring each parameter always maps to the same Modbus address, which simplifies system integration and reprogramming.
- Mobile App Integration: The logger works with the VuSitu Mobile App (iOS and Android) for streamlined setup, data collection, and analysis on a smartphone or tablet, including tagging data with photos and GPS coordinates.
- Telemetry Compatibility: It can be paired with accessories like the VuLink telemetry system to enable real-time, remote data access and automatic event alerts via the cloud-based HydroVu platform
- Dimensions: 0.72 in (1.83 cm) diameter × 8.5 in (21.6 cm) length, ~0.27 lbs (124 g)
- Construction: Solid titanium body with Delrin nose cone; Kevlar-reinforced cables available
- Pressure Range: Vented (Gauged) up to 500 psig (351 m / 1153 ft)
- Accuracy: High accuracy via 3D factory calibration across full pressure and temperature range
- Battery: 3.6V lithium, ~10 years or 2 million readings
- Memory: 2.0 MB (~120,000 records)
- Logging Rates: Up to 2 readings/sec; modes include Linear, Fast Linear, and Event
- Communication: Modbus/RS485, SDI-12, 4-20 mA; integrates with VuLink/HydroVu
- External Power: 8–36 VDC
- Key Feature: Vented design provides automatic barometric compensation for accurate water level measurements
