Towards the development on new high capacity tensiometers capable of measuring soil matric suction beyond 3 MPa

High capacity tensiometers (HCT) are the only type of sensors in existence that can measure soil matric suction directly and regarded to be most accurate reliable technique for study evolution unsaturated soils. The measurement with HCTs is possible due their design, composed ceramic filter a specific air entry value (AEV), small water reservoir, pressure transducer. Where, AEV filter, more precisely largest pore size within ceramic, plays important role controlling measuring range HCTs. Specifically, decreasing results an increase range. In this work, new development presented whereby was replaced from typically used 1.5 MPa alumina estimated 3.5 MPa. To assess performance similar designed were assembled Soilmoisture Equipment Corp. filters. Early show maximum beyond 3 filter.