Mail id bore pit manual one data logger human error High accuracy pressure data exact accuracy accuracy range digital output digital readings harsh conditions advanced analysis accurate readings integrated system electronic device digital platforms erroneous readings electrical signals full-scale reading contaminated sites groundwater levels Regular calibration Regular inspections manual measurements pore water pressure periodic calibration Careful installation measurement location long-term monitoring continuous monitoring construction projects Allegiance Enterprise Vibrating wire models long-term geotechnical Real-time data logging flexible data handling main maintenance tasks other porous materials Geotechnical monitoring maintenance requirements many digital piezometers Water management systems vibrating wire piezometer Remote monitoring capabilities environmental monitoring projects Expert Allegiance Water Management™