Casagrande piezometers are used to measure the pore water pressure in medium-low permeable soils. They are composed by a filter unit connected to the surface with single or twin tube. Standpipe piezometers are used to monitor the ground water table level in high permeability soils. The standpipe filter unit consists of a Casagrande filter not sealed in the borehole with bentonite, or a slotted tube covered by geotechnical fabric in order to filter the water entry.
Casagrande filter unit is used to measure the water pressure in permeable soil. Filter unit is made in syntherised high density polyethylene. It is available in different models to suite all the customer applications. Filter units have threaded cap joint with two 0.5″ twin tubes or with a 1.5″ single tube. Casagrande piezometers can be read manually with water level meter or automatically with transducer (removable transducer, vented pressure transducer, vibrating wire piezometer) connected to OMNIAlog datalogger.
Standpipe piezometers are used to monitor the ground water table. The standpipe filter unit consists of a slotted tube covered by geotechnical fabric for filtered water entry. Standpipe piezometers are mosly read manually with water level meter, but also automatic readings are allowed with vented pressure transducer or vibrating wire piezometer connected to OMNIAlog datalogger.
- Control of ground water level
- Hydrological and water supply investigations
- Construction and stability control of rail and road embankments, earth dams and foundations
- Investigation of stability in natural and cut slopes
- Permeability tests for drainage and de-watering activities
- Filters available in different models for both single and twin tube
- Simple automation with resistive or vibrating wire pressure transducers
- Available with conic-tip transducer that turns Casagrande piezometer in close circuit piezometer
- Wide range of accessories available in order to filter the water entry.
| PRODUCT CODE | NOMINAL oD / PRESS. CLASS | OD / ID | COUPLING OD / THREADING | MATERIAL | LENGTH |
| 0TCH0005000 | ½" / PN 12.5 | 21.1 mm / 15.9 mm | 26 mm / Gas | PVC | 3 m |
| 0TCH0010000 | 1" / PN 12.5 | 33.3 mm / 26.7 mm | 40 mm / Gas | PVC | 3 m |
| 0TCH0015000 | 1 ½" / PN 12.5 | 48.0 mm / 40.0 mm | 55 mm / Gas | PVC | 3 m |
| 0TCH0020000 | 2" / PN 12.5 | 60.0 mm / 51.6 mm | 65 mm / Gas | PVC | 3 m |
| 0TCH0030000 | 3" / PN 12.5 | 89.0 mm / 79.0 mm | 95 mm / Gas | PVC | 3 m |
| PRODUCT CODE | NOMINAL OD / PRESS. CLASS | OD / ID | COUPLING OD / THREADING | MATERIAL / LENGTH | SLOT / DISTANCE |
| 0TFH0310000 | 1" / PN 12.5 | 33.3 mm / 26.7 mm | 40 mm / Gas | PVC / 3 m | 0.5 mm / 4.5 mm |
| 0TFH0315000 | 1 ½" / PN 12.5 | 48.0 mm / 40.0 mm | 55 mm / Gas | PVC / 3 m | 0.5 mm / 4.5 mm |
| 0TFH0320000 | 2" / PN 12.5 | 60.0 mm / 52 mm | 65 mm / Gas | PVC / 3 m | 0.5 mm / 4.5 mm |
| 0TFH0330000 | 3" / PN 12.5 | 89.0 mm / 80 mm | 94 mm / Gas | PVC / 3 m | 0.5 mm / 4.5 mm |
| PRODUCT CODE | MODEL | FILTER DIAM. / POROSITY | MATERIAL | LENGth/ OD | TUBE CONNECTION |
| 0P101002000 | P101 | 60 mm / 40 μ | polyethylene | 275 mm / 61.5 mm | 1 x 1 ½" |
| 0P112002000 | P112 | 60 mm / 40 μ | polyethylene | 270 mm / 61.5 mm | 2 x ½" |
| 0P112A02000 | P112A | 60 mm / 40 μ | polyethylene | 285 mm / 80.0 mm | 1 x 1 ½" / 1 x ½" |
