In-Situ Rugged TROLL 200 Data Logger vapor tight seal making these covers ideal for

making these covers ideal for long-term groundwater monitoring and environmental compliance projects

Can be configured with different gases

thanks to a biodegradable additive that accelerates decomposition

and the optional ARA DOCK4 automates bump testing and calibration for up to four units at once

In-Situ Rugged TROLL 200 Data Logger vapor tight seal making these covers ideal forThe Rugged TROLL 200 is built for long and short term groundwater and surface water level monitoring, in pressure ranges up to 250 ft (76 m). Titanium and sealed construction including a sealed battery to reduce potential leak paths outperforms and outlasts specially coated data loggers, and 3D factory calibration with In Situ's anti drift system keeps it accurate for years of maintenance free operation. Set up, view, and download logs directly from