In-Situ Level TROLL 400
In-Situ Level TROLL 400

In-Situ Level TROLL 400

Unless you require vented level data, the Level TROLL 400 is for you. This low-maintenance data logger measures and logs water level, water pressure and temperature. Ideal for long-term monitoring at flood-prone or high-humidity sites, the Level TROLL 400 is available in non-vented (absolute) pressure ranges. 3D factory calibration and our unique anti-drift system ensure accuracy, and durable titanium construction is designed to withstand harsh conditions in fresh or saltwater, in either groundwater or surface water environments.

Dimensions (DxL & Weight)

1.83cm x 21.6cm - 124g

0.72in x 8.5in - 0.27lb

Temperature Ranges Operational: -20 to 80° C (-4 to 176° F) Storage: -40 to 80° C (-40 to 176° F) Calibrated: -5 to 50° C (23 to 122° F)
Pressure Range

Absolute (non-vented) 30 psia: 11 m (35 ft) 100 psia: 60 m (197 ft) 300 psia: 200 m (658 ft) 500 psia: 341 m (1120 ft)

Accuracy ±0.05% FS from -5 to 50° C
Resolution ±0.005% FS or better
Units of Measure Pressure: psi, kPa, bar, mbar, mmHg, inHg, cmH2O, inH2O Level: in., ft, mm, cm, m

In-Situ Manufacturer

Regular price$895.00