In-Situ Level TROLL 700 Data Logger
The Level TROLL 700 is In-Situ's premier water level data logger, built specifically for aquifer characterization and other specialized groundwater and surface water monitoring. Its titanium housing, 4 MB memory (260,000 data points), higher data resolution, and advanced logging modes (including Linear, Fast Linear, Linear Average, Event, Step Linear, and True Logarithmic) make it the professional's choice for continuous, accurate water level, pressure, and temperature monitoring.
Every sensor undergoes 3D factory calibration across the full pressure and temperature range, with a unique anti-drift system — Kevlar-reinforced cables, piezoresistive titanium sensors, and tight-tolerance electronics — to hold accuracy for years in the field. Each instrument ships with a NIST-traceable calibration report. Integrates seamlessly with In-Situ's shared ecosystem of cables, in-well telemetry, VuSitu mobile app, and HydroVu Data Services.
Available in vented (gauged) ranges up to 500 psig, or non-vented (absolute) ranges up to 1000 psia. The 700H variant exceeds USGS surface-water accuracy specifications (±0.01 ft up to 15 ft).
Note: Twist-Lock Backshell/Hanger sold separately.
- 4 MB memory stores up to 260,000 data points at higher resolution than standard loggers
- Advanced logging modes include Linear, Fast Linear, Event, Step Linear, and True Logarithmic
- Kevlar-reinforced cables and piezoresistive titanium sensors form an anti-drift system for long-term accuracy
- Every unit ships with a NIST-traceable calibration report
- Available in vented ranges to 500 psig or non-vented ranges to 1000 psia
- 700H variant exceeds USGS surface-water accuracy specifications (±0.01 ft up to 15 ft)
- Aquifer characterization studies
- High-resolution groundwater monitoring
- USGS-grade surface water gauging (700H variant)
- Specialized research requiring advanced logging modes
- Long-term high-capacity data collection
- Regulatory programs requiring NIST-traceable calibration