This reliable, all-in-one instrument, measures and records water level and pressure, conductivity and temperature. It is available in vented and non-vented configurations, features a unique conductivity cell design that allows for a wide accurate-measurement range in a narrow diameter instrument. Titanium construction resists corrosion and sub-1-inch design fits narrow-diameter wells, making the Aqua TROLL 200 Data Logger ideal for coastal, remediation and mine-water monitoring projects.

The intuitive VuSitu mobile app pairs perfectly to provide auto-configuration, simplified calibration, directed data analysis and automated report creation.

View and share data on the spot using your mobile device and use open communication protocols to easily integrate with existing third-party data loggers and telemetry systems. Use with HydroVu Data Services or direct-read Rugged Cable for real-time data access and automatic event alerts.


3D Factory Calibration

Unlike typical pressure sensors, ours are calibrated across full pressure and full temperature for accuracy, regardless of depth. Save time and money with pre-calibrated sensors that are linear from the factory and NIST certified where applicable.

Simple Data Management

Consolidate all site information with the VuSitu mobile app and tag data with site photos and GPS coordinates. Log data to your smartphone and download results in a standard .csv file format.

Rugged Cable

Kevlar strands ensure that our cable won’t stretch or break. Titanium twist-lock connectors enable quick, reliable connections, and Kevlar Grip provides redundant security. Use with the Rugged Cable Splitter to measure multiple parameters at various depths simultaneously.



Monitor groundwater, surface water and air, both during and after in-situ treatment of contaminated groundwater.

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Manage water entering, moving through and leaving a mine site.

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