DC DWLR dust time Unit 300 V wells Features Function boreholes Components instrument Data Logger key details piezometers A piezometer water levels water ingress ground surface liquid pressure allegianceindia specific depths Pressure Sensor remote monitoring water availability managing resources valuable information Allegiance Enterprise Universal Power Supply IP 66 Display Enclosure Inbuilt Telemetry System High Accuracy Applications Allegiance Water Management Easy Installation IP 68 Sensor other groundwater monitoring systems Digital Water Level Recorder Piezometer