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. Need one, or other cables and accessories? Visit In-Situ Level TROLL Parts & Accessories.