The LevelVent 5 records very accurate water level and temperature measurements in shallow groundwater and surface water applications. The loggers combine pressure and temperature sensors, datalogger, and memory for up to 150,000 data logs within a 22 mm x 173 mm (7/8” x 6.8”) stainless steel housing with corrosion-resistant coating. The LevelVent 5 logger also contains a 10-year lithium battery (based on 1 reading per minute).