Temp Data & Water Level Loggers Products

Gather and monitor water level data for years without having to replace batteries or equipment. In-Situ water level loggers are accurate, cost-effective, and survive in extreme conditions. Professional and Premium models are available in vented and non-vented configurations.

Performance Level TROLLs

Research-grade accuracy and dependability. Ideal for specialized applications.

Level TROLL 700 Data Logger

Specialized for aquifer characterization. Records water level, pressure, and temperature. Vented and non-vented.

Virtual HERMIT Aquifer Testing Kit

Conduct step-drawdown and constant-rate pump tests on an entire well field.

Level TROLL 700H Data Logger

Meets the OSW Surface-Water Specification. Records water level, pressure, and temperature. Vented only.

Professional Level TROLLs

Affordable and reliable. Ideal for sub-1 inch deployments.

Level TROLL 500 Data Logger

Increased accuracy compared to non-vented units. Records water level, pressure, and temperature in sub-1 inch applications. Vented only.

BaroTROLL Data Logger

Records barometric pressure to compensate for changes in water level due to barometric fluctuations.

Level TROLL 400 Data Logger

Records water level, pressure, and temperature. Non-vented only.

Practical Rugged TROLLs

Low-cost and durable with versatile data collection options.

Rugged TROLL 200 Data Logger

Records water level, pressure, and temperature. Non-vented only options available. Use for real-time data applications.

Rugged BaroTROLL Data Logger

Records barometric pressure to compensate for changes in water level due to barometric fluctuations.

Rugged TROLL 100 Data Logger

Records water level, pressure, and temperature. Non-vented only options available. Periodic data download.