HERON DIPPER LOGGER 100FT
The dipper-log by Heron Instruments is an economical, single-channel data logger for long-term monitoring of groundwater levels in wells, boreholes, and open bodies of water. The dipper log's compact size allows it to be used in wells down to ¾ inch (20mm) diameter. The dipper-log uses an absolute (total pressure) system. The system does not require vented cable which is subject to condensation and freezing. The dipper log automatically takes barometrically compensated readings for short-term tests.