In-Situ Level TROLL 500 Data Logger Groundwater purging the ARA-X4 warms up in

the ARA-X4 warms up in about one minute

these options are designed to provide smooth

1(>1MΩ) ±0

GLP-compliant logging

In-Situ Level TROLL 500 Data Logger Groundwater purging the ARA-X4 warms up inThe Level TROLL 500 is In Situ's most popular water level data logger a cost effective, sub 1 inch instrument suited to a wide range of groundwater and surface water projects. It continuously logs water level, water pressure, and temperature, with vented (gauged) pressure ranges up to 500 psig for automatic atmospheric compensation, so there's no need to correct for barometric pressure changes after the fact. Solid titanium construction stands up to