Solinist¿s Levelogger Model 3001 Series has a datalogger, 10-year battery, pressure transducer and temperature sensor, all housed in a very small, minimal maintenance, 7/8 inch by 4.9 inch stainless steel housing. The sealed design offers protection against power surges and greatly simplifies maintenance. The fully automatic, easily programmed Levelogger allows measurements at selected time intervals as small as 0.5 seconds with no wraparound, so that it does not overwrite data. Its high accuracy and long-term stability make Leveloggers the ideal device for recording water levels in monitoring and production wells, boreholes, lakes, rivers, tanks, harbors, etc. Solinist Canada Ltd.