The In-Situ Rugged TROLL series consists of a number of non-vented water level, pressure and temperature probes designed for groundwater and surface water monitoring applications. Each Rugged TROLL is constructed out of titanium, providing protection against chemicals and corrosion in harsh environments. You can choose from linear, fast linear and event logging modes, depending on your applications. You can also easily retrieve data in the field using the Rugged TROLL docking station and Win-Situ software. Use in conjunction with an In-Situ Baro TROLL for barometric pressure compensation.