In-Situ Rugged TROLL 200 Data Logger STEL not a pressure sensor —

not a pressure sensor — it connects to a standard tipping-bucket rain gauge with a reed-switch output and records a timestamp each time the bucket tips

a separate Sample Retrieval Device is inserted to unseat the lower check ball while a trigger on the top valve controls the flow rate for a slow

ethylene oxide

Ideal for diverse environments

Titanium construction resists corrosion

In-Situ Rugged TROLL 200 Data Logger STEL not a pressure sensor —The 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